操作系统开发

开发平台：

WINDOWS

BOOK.PS：源码内容

(not)126 2328 A
(ready\n",)378 2496 A
(w_name());)420 2916 A
3690 V
(10781)210 648 A
(return(ERR);)504 1362 A
3780 V
(10782)210 648 A
1110(})S
3870 V
(10783)210 648 A
3960 V
(10784)210 648 A
1110(/*)S
(Select)252 1236 A
(drive.)252 1530 A
1824(*/)S
4050 V
(10785)210 648 A
(out_byte(base)546 1110 A
1698(+)S
(REG_LDH,)336 1782 A
(cmd->ldh);)420 2160 A
4140 V
(10786)210 648 A
4230 V
(10787)210 648 A
1110(if)S
((!waitfor(STATUS_BSY,)882 1236 A
(0)))126 2160 A
2328({)S
4320 V
(10788)210 648 A
(printf("%s:)462 1362 A
(drive)210 1866 A
(not)126 2118 A
(ready\n",)378 2286 A
(w_name());)420 2706 A
4410 V
(10789)210 648 A
(return(ERR);)504 1362 A
4500 V
(10790)210 648 A
1110(})S
4590 V
(10791)210 648 A
4680 V
(10792)210 648 A
1110(/*)S
(Schedule)336 1236 A
1614(a)S
(wakeup)252 1698 A
(call,)210 1992 A
(some)168 2244 A
(controllers)462 2454 A
(are)126 2958 A
(flaky.)252 3126 A
3420(*/)S
4770 V
(10793)210 648 A
(clock_mess(WAKEUP,)756 1110 A
(w_timeout);)462 1908 A
4860 V
(10794)210 648 A
4950 V
(10795)210 648 A
(out_byte(base)546 1110 A
1698(+)S
(REG_CTL,)336 1782 A
(wn->pheads)420 2160 A
2622(>=)S
2748(8)S
2832(?)S
(CTL_EIGHTHEADS)588 2916 A
3546(:)S
(0);)126 3630 A
5040 V
(10796)210 648 A
(out_byte(base)546 1110 A
1698(+)S
(REG_PRECOMP,)504 1782 A
(cmd->precomp);)588 2328 A
5130 V
(10797)210 648 A
(out_byte(base)546 1110 A
1698(+)S
(REG_COUNT,)420 1782 A
(cmd->count);)504 2244 A
5220 V
(10798)210 648 A
(out_byte(base)546 1110 A
1698(+)S
(REG_SECTOR,)462 1782 A
(cmd->sector);)546 2286 A
5310 V
(10799)210 648 A
(out_byte(base)546 1110 A
1698(+)S
(REG_CYL_LO,)462 1782 A
(cmd->cyl_lo);)546 2286 A
5400 V
(10800)210 648 A
(out_byte(base)546 1110 A
1698(+)S
(REG_CYL_HI,)462 1782 A
(cmd->cyl_hi);)546 2286 A
5490 V
(10801)210 648 A
(lock();)294 1110 A
5580 V
(10802)210 648 A
(out_byte(base)546 1110 A
1698(+)S
(REG_COMMAND,)504 1782 A
(cmd->command);)588 2328 A
5670 V
(10803)210 648 A
(w_command)378 1110 A
1530(=)S
(cmd->command;)546 1614 A
5760 V
(10804)210 648 A
(w_status)336 1110 A
1488(=)S
(STATUS_BSY;)462 1572 A
5850 V
(10805)210 648 A
(unlock();)378 1110 A
5940 V
(10806)210 648 A
(return(OK);)462 1110 A
6030 V
(10807)210 648 A
1026(})S
8418 V
EP
%%Page: 141 141
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
1981(File:)S
2214(src/kernel/at_wini.c)S
12 B
(141)180 4248 A
900 V
7 LST
(10810)210 648 A
(/*===========================================================================*)3276 1026 A
990 V
(10811)210 648 A
1068(*)S
(w_need_reset)504 2370 A
4260(*)S
1080 V
(10812)210 648 A
(*===========================================================================*/)3276 1068 A
1170 V
(10813)210 648 A
(PRIVATE)294 1026 A
(void)168 1362 A
(w_need_reset())588 1572 A
1260 V
(10814)210 648 A
1026({)S
1350 V
(10815)210 648 A
1026(/*)S
(The)126 1152 A
(controller)420 1320 A
(needs)210 1782 A
2034(to)S
2160(be)S
(reset.)252 2286 A
2580(*/)S
1440 V
(10816)210 648 A
(struct)252 1110 A
(wini)168 1404 A
(*wn;)168 1614 A
1530 V
(10817)210 648 A
1620 V
(10818)210 648 A
(for)126 1110 A
((wn)126 1278 A
1446(=)S
(wini;)210 1530 A
1782(wn)S
1908(<)S
(&wini[MAX_DRIVES];)756 1992 A
(wn++))210 2790 A
3042({)S
1710 V
(10819)210 648 A
(wn->state)378 1362 A
1782(|=)S
(DEAF;)210 1908 A
1800 V
(10820)210 648 A
(wn->state)378 1362 A
1782(&=)S
(304INITIALIZED;)546 1908 A
1890 V
(10821)210 648 A
1110(})S
1980 V
(10822)210 648 A
1026(})S
2250 V
(10825)210 648 A
(/*============================================================================*)3318 1026 A
2340 V
(10826)210 648 A
1068(*)S
(w_do_close)420 2370 A
4302(*)S
2430 V
(10827)210 648 A
(*============================================================================*/)3318 1068 A
2520 V
(10828)210 648 A
(PRIVATE)294 1026 A
(int)126 1362 A
(w_do_close(dp,)588 1530 A
(m_ptr))252 2160 A
2610 V
(10829)210 648 A
(struct)252 1026 A
(driver)252 1320 A
(*dp;)168 1614 A
2700 V
(10830)210 648 A
(message)294 1026 A
(*m_ptr;)294 1362 A
2790 V
(10831)210 648 A
1026({)S
2880 V
(10832)210 648 A
1026(/*)S
(Device)252 1152 A
(close:)252 1446 A
(Release)294 1740 A
2076(a)S
(device.)294 2160 A
2496(*/)S
2970 V
(10833)210 648 A
3060 V
(10834)210 648 A
1110(if)S
((w_prepare(m_ptr->DEVICE))1050 1236 A
2328(==)S
(NIL_DEV))336 2454 A
(return(ENXIO);)588 2832 A
3150 V
(10835)210 648 A
(w_wn->open_ct--;)672 1110 A
3240 V
(10836)210 648 A
(return(OK);)462 1110 A
3330 V
(10837)210 648 A
1026(})S
3600 V
(10840)210 648 A
(/*============================================================================*)3318 1026 A
3690 V
(10841)210 648 A
1068(*)S
(com_simple)420 2370 A
4302(*)S
3780 V
(10842)210 648 A
(*============================================================================*/)3318 1068 A
3870 V
(10843)210 648 A
(PRIVATE)294 1026 A
(int)126 1362 A
(com_simple(cmd))630 1530 A
3960 V
(10844)210 648 A
(struct)252 1026 A
(command)294 1320 A
(*cmd;)210 1656 A
2370(/*)S
(Command)294 2496 A
(block)210 2832 A
3084(*/)S
4050 V
(10845)210 648 A
1026({)S
4140 V
(10846)210 648 A
1026(/*)S
1152(A)S
(simple)252 1236 A
(controller)420 1530 A
(command,)336 1992 A
(only)168 2370 A
(one)126 2580 A
(interrupt)378 2748 A
(and)126 3168 A
3336(no)S
(data-out)336 3462 A
(phase.)252 3840 A
4134(*/)S
4230 V
(10847)210 648 A
(int)126 1110 A
1278(r;)S
4320 V
(10848)210 648 A
4410 V
(10849)210 648 A
1110(if)S
(((r)126 1236 A
1404(=)S
(com_out(cmd)))546 1488 A
2076(==)S
(OK))126 2202 A
2370(r)S
2454(=)S
(w_intr_wait();)588 2538 A
4500 V
(10850)210 648 A
(w_command)378 1110 A
1530(=)S
(CMD_IDLE;)378 1614 A
4590 V
(10851)210 648 A
(return(r);)420 1110 A
4680 V
(10852)210 648 A
1026(})S
4950 V
(10855)210 648 A
(/*===========================================================================*)3276 1026 A
5040 V
(10856)210 648 A
1068(*)S
(w_timeout)378 2370 A
4260(*)S
5130 V
(10857)210 648 A
(*===========================================================================*/)3276 1068 A
5220 V
(10858)210 648 A
(PRIVATE)294 1026 A
(void)168 1362 A
(w_timeout())462 1572 A
5310 V
(10859)210 648 A
1026({)S
5400 V
(10860)210 648 A
(struct)252 1110 A
(wini)168 1404 A
(*wn)126 1614 A
1782(=)S
(w_wn;)210 1866 A
5490 V
(10861)210 648 A
5580 V
(10862)210 648 A
(switch)252 1110 A
((w_command))462 1404 A
1908({)S
5670 V
(10863)210 648 A
(case)168 1110 A
(CMD_IDLE:)378 1320 A
5760 V
(10864)210 648 A
(break;)252 1362 A
2034(/*)S
(fine)168 2160 A
2370(*/)S
5850 V
(10865)210 648 A
(case)168 1110 A
(CMD_READ:)378 1320 A
5940 V
(10866)210 648 A
(case)168 1110 A
(CMD_WRITE:)420 1320 A
6030 V
(10867)210 648 A
1362(/*)S
(Impossible,)462 1488 A
(but)126 1992 A
(not)126 2160 A
2328(on)S
(PC's:)210 2454 A
(The)126 2748 A
(controller)420 2916 A
(does)168 3378 A
(not)126 3588 A
(respond.)336 3756 A
4134(*/)S
6120 V
(10868)210 648 A
6210 V
(10869)210 648 A
1362(/*)S
(Limiting)336 1488 A
(multisector)462 1866 A
(I/O)126 2370 A
(seems)210 2538 A
2790(to)S
(help.)210 2916 A
3168(*/)S
8418 V
EP
%%Page: 142 142
BP
/slant 0 def
/height 0 def
630 V
12 B
(142)180 648 A
11 R
1981(File:)S
2214(src/kernel/at_wini.c)S
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(10870)210 648 A
1362(if)S
((wn->max_count)588 1488 A
2118(>)S
2202(8)S
2286(*)S
(SECTOR_SIZE))504 2370 A
2916({)S
990 V
(10871)210 648 A
(wn->max_count)546 1698 A
2286(=)S
2370(8)S
2454(*)S
(SECTOR_SIZE;)504 2538 A
1080 V
(10872)210 648 A
1362(})S
(else)168 1446 A
1656({)S
1170 V
(10873)210 648 A
(wn->max_count)546 1698 A
2286(=)S
(SECTOR_SIZE;)504 2370 A
1260 V
(10874)210 648 A
1362(})S
1350 V
(10875)210 648 A
(/*FALL)252 1362 A
(THROUGH*/)378 1656 A
1440 V
(10876)210 648 A
(default:)336 1110 A
1530 V
(10877)210 648 A
1362(/*)S
(Some)168 1488 A
(other)210 1698 A
(command.)336 1950 A
2328(*/)S
1620 V
(10878)210 648 A
(printf("%s:)462 1362 A
(timeout)294 1866 A
2202(on)S
(command)294 2328 A
(%02x\n",)336 2664 A
(w_name(),)378 3042 A
(w_command);)462 3462 A
1710 V
(10879)210 648 A
(w_need_reset();)630 1362 A
1800 V
(10880)210 648 A
(w_status)336 1362 A
1740(=)S
1824(0;)S
1890 V
(10881)210 648 A
(interrupt(WINCHESTER);)924 1362 A
1980 V
(10882)210 648 A
1110(})S
2070 V
(10883)210 648 A
1026(})S
2340 V
(10886)210 648 A
(/*===========================================================================*)3276 1026 A
2430 V
(10887)210 648 A
1068(*)S
(w_reset)294 2370 A
4260(*)S
2520 V
(10888)210 648 A
(*===========================================================================*/)3276 1068 A
2610 V
(10889)210 648 A
(PRIVATE)294 1026 A
(int)126 1362 A
(w_reset())378 1530 A
2700 V
(10890)210 648 A
1026({)S
2790 V
(10891)210 648 A
1026(/*)S
(Issue)210 1152 A
1404(a)S
(reset)210 1488 A
1740(to)S
(the)126 1866 A
(controller.)462 2034 A
(This)168 2580 A
2790(is)S
(done)168 2916 A
(after)210 3126 A
(any)126 3378 A
(catastrophe,)504 3546 A
2880 V
(10892)210 648 A
1068(*)S
(like)168 1152 A
(the)126 1362 A
(controller)420 1530 A
(refusing)336 1992 A
2370(to)S
(respond.)336 2496 A
2970 V
(10893)210 648 A
1068(*/)S
3060 V
(10894)210 648 A
3150 V
(10895)210 648 A
(struct)252 1110 A
(wini)168 1404 A
(*wn;)168 1614 A
3240 V
(10896)210 648 A
(int)126 1110 A
(err;)168 1278 A
3330 V
(10897)210 648 A
3420 V
(10898)210 648 A
1110(/*)S
(Wait)168 1236 A
(for)126 1446 A
(any)126 1614 A
(internal)336 1782 A
(drive)210 2160 A
(recovery.)378 2412 A
2832(*/)S
3510 V
(10899)210 648 A
(milli_delay(RECOVERYTIME);)1092 1110 A
3600 V
(10900)210 648 A
3690 V
(10901)210 648 A
1110(/*)S
(Strobe)252 1236 A
(reset)210 1530 A
(bit)126 1782 A
1950(*/)S
3780 V
(10902)210 648 A
(out_byte(w_wn->base)798 1110 A
1950(+)S
(REG_CTL,)336 2034 A
(CTL_RESET);)462 2412 A
3870 V
(10903)210 648 A
(milli_delay(1);)630 1110 A
3960 V
(10904)210 648 A
(out_byte(w_wn->base)798 1110 A
1950(+)S
(REG_CTL,)336 2034 A
(0);)126 2412 A
4050 V
(10905)210 648 A
(milli_delay(1);)630 1110 A
4140 V
(10906)210 648 A
4230 V
(10907)210 648 A
1110(/*)S
(Wait)168 1236 A
(for)126 1446 A
(controller)420 1614 A
(ready)210 2076 A
2328(*/)S
4320 V
(10908)210 648 A
1110(if)S
((!w_waitfor(STATUS_BSY)924 1236 A
2202(|)S
(STATUS_RDY,)462 2286 A
(STATUS_RDY)))504 2790 A
3336({)S
4410 V
(10909)210 648 A
(printf("%s:)462 1362 A
(reset)210 1866 A
(failed,)294 2118 A
(drive)210 2454 A
(busy\n",)336 2706 A
(w_name());)420 3084 A
4500 V
(10910)210 648 A
(return(ERR);)504 1362 A
4590 V
(10911)210 648 A
1110(})S
4680 V
(10912)210 648 A
4770 V
(10913)210 648 A
1110(/*)S
(The)126 1236 A
(error)210 1404 A
(register)336 1656 A
(should)252 2034 A
2328(be)S
(checked)294 2454 A
(now,)168 2790 A
(but)126 3000 A
(some)168 3168 A
(drives)252 3378 A
(mess)168 3672 A
3882(it)S
(up.)126 4008 A
4176(*/)S
4860 V
(10914)210 648 A
4950 V
(10915)210 648 A
(for)126 1110 A
((wn)126 1278 A
1446(=)S
(wini;)210 1530 A
1782(wn)S
1908(<)S
(&wini[MAX_DRIVES];)756 1992 A
(wn++))210 2790 A
3042({)S
5040 V
(10916)210 648 A
1362(if)S
((wn->base)378 1488 A
1908(==)S
(w_wn->base))462 2034 A
(wn->state)378 2538 A
2958(&=)S
(304DEAF;)252 3084 A
5130 V
(10917)210 648 A
1110(})S
5220 V
(10918)210 648 A
(return(OK);)462 1110 A
5310 V
(10919)210 648 A
1026(})S
5580 V
(10922)210 648 A
(/*============================================================================*)3318 1026 A
5670 V
(10923)210 648 A
1068(*)S
(w_intr_wait)462 2370 A
4302(*)S
5760 V
(10924)210 648 A
(*============================================================================*/)3318 1068 A
5850 V
(10925)210 648 A
(PRIVATE)294 1026 A
(int)126 1362 A
(w_intr_wait())546 1530 A
5940 V
(10926)210 648 A
1026({)S
6030 V
(10927)210 648 A
1026(/*)S
(Wait)168 1152 A
(for)126 1362 A
1530(a)S
(task)168 1614 A
(completion)420 1824 A
(interrupt)378 2286 A
(and)126 2706 A
(return)252 2874 A
(results.)336 3168 A
3546(*/)S
6120 V
(10928)210 648 A
6210 V
(10929)210 648 A
(message)294 1110 A
(mess;)210 1446 A
8418 V
EP
%%Page: 143 143
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
1981(File:)S
2214(src/kernel/at_wini.c)S
12 B
(143)180 4248 A
900 V
7 LST
(10930)210 648 A
(int)126 1110 A
1278(r;)S
990 V
(10931)210 648 A
1080 V
(10932)210 648 A
1110(/*)S
(Wait)168 1236 A
(for)126 1446 A
1614(an)S
(interrupt)378 1740 A
(that)168 2160 A
(sets)168 2370 A
(w_status)336 2580 A
2958(to)S
("not)168 3084 A
(busy".)252 3294 A
3588(*/)S
1170 V
(10933)210 648 A
(while)210 1110 A
((w_status)378 1362 A
1782(&)S
(STATUS_BSY))462 1866 A
(receive(HARDWARE,)714 2370 A
(&mess);)294 3126 A
1260 V
(10934)210 648 A
1350 V
(10935)210 648 A
1110(/*)S
(Check)210 1236 A
(status.)294 1488 A
1824(*/)S
1440 V
(10936)210 648 A
(lock();)294 1110 A
1530 V
(10937)210 648 A
1110(if)S
(((w_status)420 1236 A
1698(&)S
((STATUS_BSY)462 1782 A
2286(|)S
(STATUS_RDY)420 2370 A
2832(|)S
(STATUS_WF)378 2916 A
3336(|)S
(STATUS_ERR)))504 3420 A
1620 V
(10938)210 648 A
3378(==)S
(STATUS_RDY))462 3504 A
4008({)S
1710 V
(10939)210 648 A
1362(r)S
1446(=)S
(OK;)126 1530 A
1800 V
(10940)210 648 A
(w_status)336 1362 A
1740(|=)S
(STATUS_BSY;)462 1866 A
2370(/*)S
(assume)252 2496 A
(still)210 2790 A
(busy)168 3042 A
(with)168 3252 A
(I/O)126 3462 A
3630(*/)S
1890 V
(10941)210 648 A
1110(})S
(else)168 1194 A
1980 V
(10942)210 648 A
1110(if)S
(((w_status)420 1236 A
1698(&)S
(STATUS_ERR))462 1782 A
2286(&&)S
((in_byte(w_wn->base)798 2412 A
3252(+)S
(REG_ERROR))420 3336 A
3798(&)S
(ERROR_BB)))420 3882 A
4344({)S
2070 V
(10943)210 648 A
1362(r)S
1446(=)S
(ERR_BAD_SECTOR;)630 1530 A
2370(/*)S
(sector)252 2496 A
(marked)252 2790 A
(bad,)168 3084 A
(retries)294 3294 A
(won't)210 3630 A
(help)168 3882 A
4092(*/)S
2160 V
(10944)210 648 A
1110(})S
(else)168 1194 A
1404({)S
2250 V
(10945)210 648 A
1362(r)S
1446(=)S
(ERR;)168 1530 A
2370(/*)S
(any)126 2496 A
(other)210 2664 A
(error)210 2916 A
3168(*/)S
2340 V
(10946)210 648 A
1110(})S
2430 V
(10947)210 648 A
(unlock();)378 1110 A
2520 V
(10948)210 648 A
(return(r);)420 1110 A
2610 V
(10949)210 648 A
1026(})S
2880 V
(10952)210 648 A
(/*==========================================================================*)3234 1026 A
2970 V
(10953)210 648 A
1068(*)S
(w_waitfor)378 2370 A
4218(*)S
3060 V
(10954)210 648 A
(*==========================================================================*/)3234 1068 A
3150 V
(10955)210 648 A
(PRIVATE)294 1026 A
(int)126 1362 A
(w_waitfor(mask,)630 1530 A
(value))252 2202 A
3240 V
(10956)210 648 A
(int)126 1026 A
(mask;)210 1194 A
2370(/*)S
(status)252 2496 A
(mask)168 2790 A
3000(*/)S
3330 V
(10957)210 648 A
(int)126 1026 A
(value;)252 1194 A
2370(/*)S
(required)336 2496 A
(status)252 2874 A
3168(*/)S
3420 V
(10958)210 648 A
1026({)S
3510 V
(10959)210 648 A
1026(/*)S
(Wait)168 1152 A
(until)210 1362 A
(controller)420 1614 A
2076(is)S
2202(in)S
(the)126 2328 A
(required)336 2496 A
(state.)252 2874 A
(Return)252 3210 A
(zero)168 3504 A
3714(on)S
(timeout.)336 3840 A
4218(*/)S
3600 V
(10960)210 648 A
3690 V
(10961)210 648 A
(struct)252 1110 A
(milli_state)462 1404 A
(ms;)126 1908 A
3780 V
(10962)210 648 A
3870 V
(10963)210 648 A
(milli_start(&ms);)714 1110 A
3960 V
(10964)210 648 A
1110(do)S
1236({)S
4050 V
(10965)210 648 A
1320(if)S
(((in_byte(w_wn->base)840 1446 A
2328(+)S
(REG_STATUS))462 2412 A
2916(&)S
(mask))210 3000 A
3252(==)S
(value))252 3378 A
(return)252 3672 A
3966(1;)S
4140 V
(10966)210 648 A
1110(})S
(while)210 1194 A
((milli_elapsed(&ms))798 1446 A
2286(<)S
(TIMEOUT);)378 2370 A
4230 V
(10967)210 648 A
4320 V
(10968)210 648 A
(w_need_reset();)630 1110 A
2034(/*)S
(Controller)420 2160 A
(gone)168 2622 A
(deaf.)210 2832 A
3084(*/)S
4410 V
(10969)210 648 A
(return(0);)420 1110 A
4500 V
(10970)210 648 A
1026(})S
4770 V
(10973)210 648 A
(/*==========================================================================*)3234 1026 A
4860 V
(10974)210 648 A
1068(*)S
(w_handler)378 2370 A
4218(*)S
4950 V
(10975)210 648 A
(*==========================================================================*/)3234 1068 A
5040 V
(10976)210 648 A
(PRIVATE)294 1026 A
(int)126 1362 A
(w_handler(irq))588 1530 A
5130 V
(10977)210 648 A
(int)126 1026 A
(irq;)168 1194 A
5220 V
(10978)210 648 A
1026({)S
5310 V
(10979)210 648 A
1026(/*)S
(Disk)168 1152 A
(interrupt,)420 1362 A
(send)168 1824 A
(message)294 2034 A
2370(to)S
(winchester)420 2496 A
(task)168 2958 A
(and)126 3168 A
(reenable)336 3336 A
(interrupts.)462 3714 A
4218(*/)S
5400 V
(10980)210 648 A
5490 V
(10981)210 648 A
(w_status)336 1110 A
1488(=)S
(in_byte(w_wn->base)756 1572 A
2370(+)S
(REG_STATUS);)504 2454 A
3042(/*)S
(acknowledge)462 3168 A
(interrupt)378 3672 A
4092(*/)S
5580 V
(10982)210 648 A
(interrupt(WINCHESTER);)924 1110 A
5670 V
(10983)210 648 A
(return)252 1110 A
1404(1;)S
5760 V
(10984)210 648 A
1026(})S
6030 V
(10987)210 648 A
(/*============================================================================*)3318 1026 A
6120 V
(10988)210 648 A
1068(*)S
(w_geometry)420 2370 A
4302(*)S
6210 V
(10989)210 648 A
(*============================================================================*/)3318 1068 A
8418 V
EP
%%Page: 144 144
BP
/slant 0 def
/height 0 def
630 V
12 B
(144)180 648 A
11 R
1981(File:)S
2214(src/kernel/at_wini.c)S
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(10990)210 648 A
(PRIVATE)294 1026 A
(void)168 1362 A
(w_geometry(entry))714 1572 A
990 V
(10991)210 648 A
(struct)252 1026 A
(partition)378 1320 A
(*entry;)294 1740 A
1080 V
(10992)210 648 A
1026({)S
1170 V
(10993)210 648 A
(entry->cylinders)672 1110 A
1824(=)S
(w_wn->lcylinders;)714 1908 A
1260 V
(10994)210 648 A
(entry->heads)504 1110 A
1656(=)S
(w_wn->lheads;)546 1740 A
1350 V
(10995)210 648 A
(entry->sectors)588 1110 A
1740(=)S
(w_wn->lsectors;)630 1824 A
1440 V
(10996)210 648 A
1026(})S
1530 V
(10997)210 648 A
(#endif)252 1026 A
1320(/*)S
(ENABLE_AT_WINI)588 1446 A
2076(*/)S
1890 V
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
1980 V
(src/kernel/clock.c)756 2034 A
2070 V
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
2250 V
(11000)210 648 A
1026(/*)S
(This)168 1152 A
(file)168 1362 A
(contains)336 1572 A
(the)126 1950 A
(code)168 2118 A
(and)126 2328 A
(data)168 2496 A
(for)126 2706 A
(the)126 2874 A
(clock)210 3042 A
(task.)210 3294 A
(The)126 3588 A
(clock)210 3756 A
(task)168 4008 A
2340 V
(11001)210 648 A
1068(*)S
(accepts)294 1152 A
(six)126 1488 A
(message)294 1656 A
(types:)252 1992 A
2430 V
(11002)210 648 A
1068(*)S
2520 V
(11003)210 648 A
1068(*)S
(HARD_INT:)378 1236 A
1782(a)S
(clock)210 1866 A
(interrupt)378 2118 A
(has)126 2538 A
(occurred)336 2706 A
2610 V
(11004)210 648 A
1068(*)S
(GET_UPTIME:)462 1236 A
(get)126 1782 A
(the)126 1950 A
(time)168 2118 A
(since)210 2328 A
(boot)168 2580 A
2790(in)S
(ticks)210 2916 A
2700 V
(11005)210 648 A
1068(*)S
(GET_TIME:)378 1236 A
1782(a)S
(process)294 1866 A
(wants)210 2202 A
(the)126 2454 A
(real)168 2622 A
(time)168 2832 A
3042(in)S
(seconds)294 3168 A
2790 V
(11006)210 648 A
1068(*)S
(SET_TIME:)378 1236 A
1782(a)S
(process)294 1866 A
(wants)210 2202 A
2454(to)S
(set)126 2580 A
(the)126 2748 A
(real)168 2916 A
(time)168 3126 A
3336(in)S
(seconds)294 3462 A
2880 V
(11007)210 648 A
1068(*)S
(SET_ALARM:)420 1236 A
1782(a)S
(process)294 1866 A
(wants)210 2202 A
2454(to)S
2580(be)S
(alerted)294 2706 A
(after)210 3042 A
3294(a)S
(specified)378 3378 A
(interval)336 3798 A
2970 V
(11008)210 648 A
1068(*)S
(SET_SYN_AL:)462 1236 A
(set)126 1782 A
(the)126 1950 A
(sync)168 2118 A
(alarm)210 2328 A
3060 V
(11009)210 648 A
1068(*)S
3150 V
(11010)210 648 A
1068(*)S
3240 V
(11011)210 648 A
1068(*)S
(The)126 1152 A
(input)210 1320 A
(message)294 1572 A
1908(is)S
(format)252 2034 A
(m6.)126 2328 A
(The)126 2538 A
(parameters)420 2706 A
(are)126 3168 A
3336(as)S
(follows:)336 3462 A
3330 V
(11012)210 648 A
1068(*)S
3420 V
(11013)210 648 A
1068(*)S
(m_type)252 1320 A
(CLOCK_PROC)420 1740 A
(FUNC)168 2286 A
(NEW_TIME)336 2622 A
3510 V
(11014)210 648 A
1068(*)S
(---------------------------------------------)1890 1152 A
3600 V
(11015)210 648 A
1068(*)S
1152(|)S
(HARD_INT)336 1236 A
1698(|)S
2160(|)S
2580(|)S
3000(|)S
3690 V
(11016)210 648 A
1068(*)S
(|------------+----------+---------+---------|)1890 1152 A
3780 V
(11017)210 648 A
1068(*)S
1152(|)S
(GET_UPTIME)420 1236 A
1698(|)S
2160(|)S
2580(|)S
3000(|)S
3870 V
(11018)210 648 A
1068(*)S
(|------------+----------+---------+---------|)1890 1152 A
3960 V
(11019)210 648 A
1068(*)S
1152(|)S
(GET_TIME)336 1236 A
1698(|)S
2160(|)S
2580(|)S
3000(|)S
4050 V
(11020)210 648 A
1068(*)S
(|------------+----------+---------+---------|)1890 1152 A
4140 V
(11021)210 648 A
1068(*)S
1152(|)S
(SET_TIME)336 1236 A
1698(|)S
2160(|)S
2580(|)S
(newtime)294 2664 A
3000(|)S
4230 V
(11022)210 648 A
1068(*)S
(|------------+----------+---------+---------|)1890 1152 A
4320 V
(11023)210 648 A
1068(*)S
1152(|)S
(SET_ALARM)378 1236 A
1698(|)S
(proc_nr)294 1782 A
2160(|f)S
2286(to)S
(call|)210 2412 A
(delta)210 2706 A
3000(|)S
4410 V
(11024)210 648 A
1068(*)S
(|------------+----------+---------+---------|)1890 1152 A
4500 V
(11025)210 648 A
1068(*)S
1152(|)S
(SET_SYN_AL)420 1236 A
1698(|)S
(proc_nr)294 1782 A
2160(|)S
2580(|)S
(delta)210 2706 A
3000(|)S
4590 V
(11026)210 648 A
1068(*)S
(---------------------------------------------)1890 1152 A
4680 V
(11027)210 648 A
1068(*)S
(NEW_TIME,)378 1152 A
(DELTA_CLICKS,)546 1572 A
(and)126 2160 A
(SECONDS_LEFT)504 2328 A
(all)126 2874 A
(refer)210 3042 A
3294(to)S
(the)126 3420 A
(same)168 3588 A
(field)210 3798 A
4050(in)S
4770 V
(11028)210 648 A
1068(*)S
(the)126 1152 A
(message,)336 1320 A
(depending)378 1698 A
(upon)168 2118 A
(the)126 2328 A
(message)294 2496 A
(type.)210 2832 A
4860 V
(11029)210 648 A
1068(*)S
4950 V
(11030)210 648 A
1068(*)S
(Reply)210 1152 A
(messages)336 1404 A
(are)126 1782 A
1950(of)S
(type)168 2076 A
(OK,)126 2286 A
(except)252 2454 A
2748(in)S
(the)126 2874 A
(case)168 3042 A
3252(of)S
3378(a)S
(HARD_INT,)378 3462 A
3882(to)S
5040 V
(11031)210 648 A
1068(*)S
(which)210 1152 A
1404(no)S
(reply)210 1530 A
1782(is)S
(generated.)420 1908 A
(For)126 2370 A
(the)126 2538 A
(GET_*)210 2706 A
(messages)336 2958 A
(the)126 3336 A
(time)168 3504 A
3714(is)S
(returned)336 3840 A
5130 V
(11032)210 648 A
1068(*)S
1152(in)S
(the)126 1278 A
(NEW_TIME)336 1446 A
(field,)252 1824 A
(and)126 2118 A
(for)126 2286 A
(the)126 2454 A
(SET_ALARM)378 2622 A
(and)126 3042 A
(SET_SYN_AL)420 3210 A
(the)126 3672 A
(time)168 3840 A
5220 V
(11033)210 648 A
1068(*)S
1152(in)S
(seconds)294 1278 A
(remaining)378 1614 A
(until)210 2034 A
(the)126 2286 A
(alarm)210 2454 A
2706(is)S
(returned)336 2832 A
3210(is)S
(returned)336 3336 A
3714(in)S
(the)126 3840 A
(same)168 4008 A
5310 V
(11034)210 648 A
1068(*)S
(field.)252 1152 A
5400 V
(11035)210 648 A
1068(*)S
5490 V
(11036)210 648 A
1068(*)S
(When)168 1152 A
1362(an)S
(alarm)210 1488 A
(goes)168 1740 A
(off,)168 1950 A
2160(if)S
(the)126 2286 A
(caller)252 2454 A
2748(is)S
2874(a)S
(user)168 2958 A
(process,)336 3168 A
3546(a)S
(SIGALRM)294 3630 A
(signal)252 3966 A
5580 V
(11037)210 648 A
1068(*)S
1152(is)S
(sent)168 1278 A
1488(to)S
(it.)126 1614 A
1824(If)S
1950(it)S
2076(is)S
2202(a)S
(task,)210 2286 A
2538(a)S
(function)336 2622 A
(specified)378 3000 A
3420(by)S
(the)126 3546 A
(caller)252 3714 A
(will)168 4008 A
5670 V
(11038)210 648 A
1068(*)S
1152(be)S
(invoked.)336 1278 A
(This)168 1698 A
(function)336 1908 A
(may,)168 2286 A
(for)126 2496 A
(example,)336 2664 A
(send)168 3042 A
3252(a)S
(message,)336 3336 A
(but)126 3714 A
(only)168 3882 A
4092(if)S
5760 V
(11039)210 648 A
1068(*)S
1152(it)S
1278(is)S
(certain)294 1404 A
(that)168 1740 A
(the)126 1950 A
(task)168 2118 A
(will)168 2328 A
2538(be)S
(blocked)294 2664 A
(when)168 3000 A
(the)126 3210 A
(timer)210 3378 A
(goes)168 3630 A
(off.)168 3840 A
4050(A)S
5850 V
(11040)210 648 A
1068(*)S
(synchronous)462 1152 A
(alarm)210 1656 A
(sends)210 1908 A
2160(a)S
(message)294 2244 A
2580(to)S
(the)126 2706 A
(synchronous)462 2874 A
(alarm)210 3378 A
(task,)210 3630 A
(which)210 3882 A
5940 V
(11041)210 648 A
1068(*)S
1152(in)S
(turn)168 1278 A
(can)126 1488 A
(dispatch)336 1656 A
2034(a)S
(message)294 2118 A
2454(to)S
(another)294 2580 A
(server.)294 2916 A
(This)168 3252 A
3462(is)S
(the)126 3588 A
(only)168 3756 A
(way)126 3966 A
6030 V
(11042)210 648 A
1068(*)S
1152(to)S
(send)168 1278 A
1488(an)S
(alarm)210 1614 A
1866(to)S
1992(a)S
(server,)294 2076 A
(since)210 2412 A
(servers)294 2664 A
(cannot)252 3000 A
(use)126 3294 A
(the)126 3462 A
(function-call)546 3630 A
6120 V
(11043)210 648 A
1068(*)S
(mechanism)378 1152 A
(available)378 1572 A
1992(to)S
(tasks)210 2118 A
(and)126 2370 A
(servers)294 2538 A
(cannot)252 2874 A
(receive)294 3168 A
(signals.)336 3504 A
6210 V
(11044)210 648 A
1068(*/)S
8418 V
EP
%%Page: 145 145
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2027(File:)S
2260(src/kernel/clock.c)S
12 B
(145)180 4248 A
900 V
7 LST
(11045)210 648 A
990 V
(11046)210 648 A
(#include)336 1026 A
("kernel.h")420 1404 A
1080 V
(11047)210 648 A
(#include)336 1026 A
(<signal.h>)420 1404 A
1170 V
(11048)210 648 A
(#include)336 1026 A
(<minix/callnr.h>)672 1404 A
1260 V
(11049)210 648 A
(#include)336 1026 A
(<minix/com.h>)546 1404 A
1350 V
(11050)210 648 A
(#include)336 1026 A
("proc.h")336 1404 A
1440 V
(11051)210 648 A
1530 V
(11052)210 648 A
1026(/*)S
(Constant)336 1152 A
(definitions.)504 1530 A
2076(*/)S
1620 V
(11053)210 648 A
(#define)294 1026 A
(MILLISEC)336 1362 A
(100)126 2076 A
2370(/*)S
(how)126 2496 A
(often)210 2664 A
2916(to)S
(call)168 3042 A
(the)126 3252 A
(scheduler)378 3420 A
((msec))252 3840 A
4134(*/)S
1710 V
(11054)210 648 A
(#define)294 1026 A
(SCHED_RATE)420 1362 A
((MILLISEC*HZ/1000))756 1824 A
2706(/*)S
(number)252 2832 A
3126(of)S
(ticks)210 3252 A
(per)126 3504 A
(schedule)336 3672 A
4050(*/)S
1800 V
(11055)210 648 A
1890 V
(11056)210 648 A
1026(/*)S
(Clock)210 1152 A
(parameters.)462 1404 A
1908(*/)S
1980 V
(11057)210 648 A
(#define)294 1026 A
(COUNTER_FREQ)504 1362 A
((2*TIMER_FREQ))588 1908 A
2706(/*)S
(counter)294 2832 A
(frequency)378 3168 A
(using)210 3588 A
(sqare)210 3840 A
(wave*/)252 4092 A
2070 V
(11058)210 648 A
(#define)294 1026 A
(LATCH_COUNT)462 1362 A
(0x00)168 2034 A
2370(/*)S
(cc00xxxx,)378 2496 A
2916(c)S
3000(=)S
(channel,)336 3084 A
3462(x)S
3546(=)S
(any)126 3630 A
3798(*/)S
2160 V
(11059)210 648 A
(#define)294 1026 A
(SQUARE_WAVE)462 1362 A
(0x36)168 2034 A
2370(/*)S
(ccaammmb,)378 2496 A
2916(a)S
3000(=)S
(access,)294 3084 A
3420(m)S
3504(=)S
(mode,)210 3588 A
3840(b)S
3924(=)S
(BCD)126 4008 A
4176(*/)S
2250 V
(11060)210 648 A
2370(/*)S
(11x11,)252 2580 A
2874(11)S
3000(=)S
(LSB)126 3084 A
(then)168 3252 A
(MSB,)168 3462 A
(x11)126 3672 A
3840(=)S
3924(sq)S
(wave)168 4050 A
4260(*/)S
2340 V
(11061)210 648 A
(#define)294 1026 A
(TIMER_COUNT)462 1362 A
(((unsigned))462 1866 A
((TIMER_FREQ/HZ)))672 2370 A
3084(/*)S
(initial)294 3210 A
(value)210 3546 A
(for)126 3798 A
(counter*/)378 3966 A
2430 V
(11062)210 648 A
(#define)294 1026 A
(TIMER_FREQ)420 1362 A
(1193182L)336 1866 A
2370(/*)S
(clock)210 2496 A
(frequency)378 2748 A
(for)126 3168 A
(timer)210 3336 A
3588(in)S
3714(PC)S
(and)126 3840 A
4008(AT)S
4134(*/)S
2520 V
(11063)210 648 A
2610 V
(11064)210 648 A
(#define)294 1026 A
(CLOCK_ACK_BIT)546 1362 A
(0x80)168 2034 A
2370(/*)S
(PS/2)168 2496 A
(clock)210 2706 A
(interrupt)378 2958 A
(acknowledge)462 3378 A
(bit)126 3882 A
4050(*/)S
2700 V
(11065)210 648 A
2790 V
(11066)210 648 A
1026(/*)S
(Clock)210 1152 A
(task)168 1404 A
(variables.)420 1614 A
2076(*/)S
2880 V
(11067)210 648 A
(PRIVATE)294 1026 A
(clock_t)294 1362 A
(realtime;)378 1698 A
2370(/*)S
(real)168 2496 A
(time)168 2706 A
(clock)210 2916 A
3168(*/)S
2970 V
(11068)210 648 A
(PRIVATE)294 1026 A
(time_t)252 1362 A
(boot_time;)420 1656 A
2370(/*)S
(time)168 2496 A
2706(in)S
(seconds)294 2832 A
3168(of)S
(system)252 3294 A
(boot)168 3588 A
3798(*/)S
3060 V
(11069)210 648 A
(PRIVATE)294 1026 A
(clock_t)294 1362 A
(next_alarm;)462 1698 A
2370(/*)S
(probable)336 2496 A
(time)168 2874 A
3084(of)S
(next)168 3210 A
(alarm)210 3420 A
3672(*/)S
3150 V
(11070)210 648 A
(PRIVATE)294 1026 A
(message)294 1362 A
(mc;)126 1698 A
2370(/*)S
(message)294 2496 A
(buffer)252 2832 A
(for)126 3126 A
(both)168 3294 A
(input)210 3504 A
(and)126 3756 A
(output)252 3924 A
4218(*/)S
3240 V
(11071)210 648 A
(PRIVATE)294 1026 A
(int)126 1362 A
(watchdog_proc;)588 1530 A
2370(/*)S
(contains)336 2496 A
(proc_nr)294 2874 A
3210(at)S
(call)168 3336 A
3546(of)S
(*watch_dog[]*/)588 3672 A
3330 V
(11072)210 648 A
(PRIVATE)294 1026 A
(watchdog_t)420 1362 A
(watch_dog[NR_TASKS+NR_PROCS];)1218 1824 A
3420 V
(11073)210 648 A
3510 V
(11074)210 648 A
1026(/*)S
(Variables)378 1152 A
(used)168 1572 A
1782(by)S
(both)168 1908 A
(clock)210 2118 A
(task)168 2370 A
(and)126 2580 A
(synchronous)462 2748 A
(alarm)210 3252 A
(task)168 3504 A
3714(*/)S
3600 V
(11075)210 648 A
(PRIVATE)294 1026 A
(int)126 1362 A
(syn_al_alive=)546 1530 A
(TRUE;)210 2118 A
2370(/*)S
(don't)210 2496 A
(wake)168 2748 A
(syn_alrm_task)546 2958 A
(before)252 3546 A
(inited*/)336 3840 A
3690 V
(11076)210 648 A
(PRIVATE)294 1026 A
(int)126 1362 A
(syn_table[NR_TASKS+NR_PROCS];)1218 1530 A
2790(/*)S
(which)210 2916 A
(tasks)210 3168 A
(get)126 3420 A
(CLOCK_INT*/)462 3588 A
3780 V
(11077)210 648 A
3870 V
(11078)210 648 A
1026(/*)S
(Variables)378 1152 A
(changed)294 1572 A
1908(by)S
(interrupt)378 2034 A
(handler)294 2454 A
2790(*/)S
3960 V
(11079)210 648 A
(PRIVATE)294 1026 A
(clock_t)294 1362 A
(pending_ticks;)588 1698 A
2370(/*)S
(ticks)210 2496 A
(seen)168 2748 A
2958(by)S
(low)126 3084 A
(level)210 3252 A
(only)168 3504 A
3714(*/)S
4050 V
(11080)210 648 A
(PRIVATE)294 1026 A
(int)126 1362 A
(sched_ticks)462 1530 A
2034(=)S
(SCHED_RATE;)462 2118 A
2706(/*)S
(counter:)336 2832 A
(when)168 3210 A
3420(0,)S
(call)168 3546 A
(scheduler)378 3756 A
4176(*/)S
4140 V
(11081)210 648 A
(PRIVATE)294 1026 A
(struct)252 1362 A
(proc)168 1656 A
(*prev_ptr;)420 1866 A
2370(/*)S
(last)168 2496 A
(user)168 2706 A
(process)294 2916 A
(run)126 3252 A
3420(by)S
(clock)210 3546 A
(task)168 3798 A
4008(*/)S
4230 V
(11082)210 648 A
4320 V
(11083)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(common_setalarm,)672 2076 A
((int)168 2790 A
(proc_nr,)336 3000 A
4410 V
(11084)210 648 A
(long)168 1698 A
(delta_ticks,)504 1908 A
(watchdog_t)420 2454 A
(fuction))336 2916 A
3294();)S
4500 V
(11085)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(do_clocktick,)546 2076 A
((void))252 2664 A
2958();)S
4590 V
(11086)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(do_get_time,)504 2076 A
((void))252 2622 A
2916();)S
4680 V
(11087)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(do_getuptime,)546 2076 A
((void))252 2664 A
2958();)S
4770 V
(11088)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(do_set_time,)504 2076 A
((message)336 2622 A
(*m_ptr))294 3000 A
3336();)S
4860 V
(11089)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(do_setalarm,)504 2076 A
((message)336 2622 A
(*m_ptr))294 3000 A
3336();)S
4950 V
(11090)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(init_clock,)462 2076 A
((void))252 2580 A
2874();)S
5040 V
(11091)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(cause_alarm,)504 2076 A
((void))252 2622 A
2916();)S
5130 V
(11092)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(do_setsyn_alrm,)630 2076 A
((message)336 2748 A
(*m_ptr))294 3126 A
3462();)S
5220 V
(11093)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(int)126 1866 A
(clock_handler,)588 2034 A
((int)168 2664 A
(irq))168 2874 A
3084();)S
5310 V
(11094)210 648 A
5400 V
(11095)210 648 A
(/*===========================================================================*)3276 1026 A
5490 V
(11096)210 648 A
1068(*)S
(clock_task)420 2370 A
4260(*)S
5580 V
(11097)210 648 A
(*===========================================================================*/)3276 1068 A
5670 V
(11098)210 648 A
(PUBLIC)252 1026 A
(void)168 1320 A
(clock_task())504 1530 A
5760 V
(11099)210 648 A
1026({)S
5850 V
(11100)210 648 A
1026(/*)S
(Main)168 1152 A
(program)294 1362 A
1698(of)S
(clock)210 1824 A
(task.)210 2076 A
2370(It)S
(corrects)336 2496 A
(realtime)336 2874 A
3252(by)S
(adding)252 3378 A
(pending)294 3672 A
5940 V
(11101)210 648 A
1068(*)S
(ticks)210 1152 A
(seen)168 1404 A
(only)168 1614 A
1824(by)S
(the)126 1950 A
(interrupt)378 2118 A
(service,)336 2538 A
(then)168 2916 A
3126(it)S
(determines)420 3252 A
(which)210 3714 A
6030 V
(11102)210 648 A
1068(*)S
1152(of)S
(the)126 1278 A
1446(6)S
(possible)336 1530 A
(calls)210 1908 A
(this)168 2160 A
2370(is)S
2496(by)S
(looking)294 2622 A
2958(at)S
('mc.m_type'.)504 3084 A
(Then)168 3672 A
6120 V
(11103)210 648 A
1068(*)S
1152(it)S
(dispatches.)462 1278 A
6210 V
(11104)210 648 A
1068(*/)S
8418 V
EP
%%Page: 146 146
BP
/slant 0 def
/height 0 def
630 V
12 B
(146)180 648 A
11 R
2027(File:)S
2260(src/kernel/clock.c)S
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(11105)210 648 A
990 V
(11106)210 648 A
(int)126 1110 A
(opcode;)294 1278 A
1080 V
(11107)210 648 A
1170 V
(11108)210 648 A
(init_clock();)546 1110 A
2370(/*)S
(initialize)420 2496 A
(clock)210 2958 A
(task)168 3210 A
3420(*/)S
1260 V
(11109)210 648 A
1350 V
(11110)210 648 A
1110(/*)S
(Main)168 1236 A
(loop)168 1446 A
1656(of)S
(the)126 1782 A
(clock)210 1950 A
(task.)210 2202 A
(Get)126 2496 A
(work,)210 2664 A
(process)294 2916 A
(it,)126 3252 A
(sometimes)378 3420 A
(reply.)252 3840 A
4134(*/)S
1440 V
(11111)210 648 A
(while)210 1110 A
((TRUE))252 1362 A
1656({)S
1530 V
(11112)210 648 A
(receive(ANY,)504 1236 A
(&mc);)210 1782 A
2370(/*)S
2496(go)S
(get)126 2622 A
2790(a)S
(message)294 2874 A
3210(*/)S
1620 V
(11113)210 648 A
(opcode)252 1236 A
1530(=)S
(mc.m_type;)420 1614 A
2370(/*)S
(extract)294 2496 A
(the)126 2832 A
(function)336 3000 A
(code)168 3378 A
3588(*/)S
1710 V
(11114)210 648 A
1800 V
(11115)210 648 A
(lock();)294 1236 A
1890 V
(11116)210 648 A
(realtime)336 1236 A
1614(+=)S
(pending_ticks;)588 1740 A
2370(/*)S
(transfer)336 2496 A
(ticks)210 2874 A
(from)168 3126 A
(low)126 3336 A
(level)210 3504 A
(handler)294 3756 A
4092(*/)S
1980 V
(11117)210 648 A
(pending_ticks)546 1236 A
1824(=)S
1908(0;)S
2370(/*)S
2496(so)S
2622(we)S
(don't)210 2748 A
(have)168 3000 A
3210(to)S
(worry)210 3336 A
(about)210 3588 A
(them)168 3840 A
4050(*/)S
2070 V
(11118)210 648 A
(unlock();)378 1236 A
2160 V
(11119)210 648 A
2250 V
(11120)210 648 A
(switch)252 1236 A
((opcode))336 1530 A
1908({)S
2340 V
(11121)210 648 A
(case)168 1362 A
(HARD_INT:)378 1572 A
(do_clocktick();)630 2076 A
(break;)252 3042 A
2430 V
(11122)210 648 A
(case)168 1362 A
(GET_UPTIME:)462 1572 A
(do_getuptime();)630 2076 A
(break;)252 3042 A
2520 V
(11123)210 648 A
(case)168 1362 A
(GET_TIME:)378 1572 A
(do_get_time();)588 2076 A
(break;)252 3042 A
2610 V
(11124)210 648 A
(case)168 1362 A
(SET_TIME:)378 1572 A
(do_set_time(&mc);)714 2076 A
(break;)252 3042 A
2700 V
(11125)210 648 A
(case)168 1362 A
(SET_ALARM:)420 1572 A
(do_setalarm(&mc);)714 2076 A
(break;)252 3042 A
2790 V
(11126)210 648 A
(case)168 1362 A
(SET_SYNC_AL:do_setsyn_alrm(&mc);)1344 1572 A
(break;)252 3042 A
2880 V
(11127)210 648 A
(default:)336 1362 A
(panic("clock)504 1740 A
(task)168 2286 A
(got)126 2496 A
(bad)126 2664 A
(message",)378 2832 A
(mc.m_type);)462 3252 A
2970 V
(11128)210 648 A
1236(})S
3060 V
(11129)210 648 A
3150 V
(11130)210 648 A
1194(/*)S
(Send)168 1320 A
(reply,)252 1530 A
(except)252 1824 A
(for)126 2118 A
(clock)210 2286 A
(tick.)210 2538 A
2790(*/)S
3240 V
(11131)210 648 A
(mc.m_type)378 1194 A
1614(=)S
(OK;)126 1698 A
3330 V
(11132)210 648 A
1194(if)S
((opcode)294 1320 A
1656(!=)S
(HARD_INT))378 1782 A
(send(mc.m_source,)714 2202 A
(&mc);)210 2958 A
3420 V
(11133)210 648 A
1110(})S
3510 V
(11134)210 648 A
1026(})S
3780 V
(11137)210 648 A
(/*===========================================================================*)3276 1026 A
3870 V
(11138)210 648 A
1068(*)S
(do_clocktick)504 2370 A
4260(*)S
3960 V
(11139)210 648 A
(*===========================================================================*/)3276 1068 A
4050 V
(11140)210 648 A
(PRIVATE)294 1026 A
(void)168 1362 A
(do_clocktick())588 1572 A
4140 V
(11141)210 648 A
1026({)S
4230 V
(11142)210 648 A
1026(/*)S
(Despite)294 1152 A
(its)126 1488 A
(name,)210 1656 A
(this)168 1908 A
(routine)294 2118 A
2454(is)S
(not)126 2580 A
(called)252 2748 A
3042(on)S
(every)210 3168 A
(clock)210 3420 A
(tick.)210 3672 A
3924(It)S
4320 V
(11143)210 648 A
1068(*)S
1152(is)S
(called)252 1278 A
1572(on)S
(those)210 1698 A
(clock)210 1950 A
(ticks)210 2202 A
(when)168 2454 A
2664(a)S
(lot)126 2748 A
2916(of)S
(work)168 3042 A
(needs)210 3252 A
3504(to)S
3630(be)S
(done.)210 3756 A
4410 V
(11144)210 648 A
1068(*/)S
4500 V
(11145)210 648 A
4590 V
(11146)210 648 A
(register)336 1110 A
(struct)252 1488 A
(proc)168 1782 A
(*rp;)168 1992 A
4680 V
(11147)210 648 A
(register)336 1110 A
(int)126 1488 A
(proc_nr;)336 1656 A
4770 V
(11148)210 648 A
4860 V
(11149)210 648 A
1110(if)S
((next_alarm)462 1236 A
1740(<=)S
(realtime))378 1866 A
2286({)S
4950 V
(11150)210 648 A
1362(/*)S
1488(An)S
(alarm)210 1614 A
(may)126 1866 A
(have)168 2034 A
(gone)168 2244 A
(off,)168 2454 A
(but)126 2664 A
(proc)168 2832 A
(may)126 3042 A
(have)168 3210 A
(exited,)294 3420 A
3756(so)S
(check.)252 3882 A
4176(*/)S
5040 V
(11151)210 648 A
(next_alarm)420 1362 A
1824(=)S
(LONG_MAX;)378 1908 A
2370(/*)S
(start)210 2496 A
(computing)378 2748 A
(next)168 3168 A
(alarm)210 3378 A
3630(*/)S
5130 V
(11152)210 648 A
(for)126 1362 A
((rp)126 1530 A
1698(=)S
(BEG_PROC_ADDR;)588 1782 A
2412(rp)S
2538(<)S
(END_PROC_ADDR;)588 2622 A
(rp++))210 3252 A
3504({)S
5220 V
(11153)210 648 A
1698(if)S
((rp->p_alarm)504 1824 A
2370(!=)S
2496(0))S
2622({)S
5310 V
(11154)210 648 A
2034(/*)S
(See)126 2160 A
2328(if)S
(this)168 2454 A
(alarm)210 2664 A
(time)168 2916 A
(has)126 3126 A
(been)168 3294 A
(reached.)336 3504 A
3882(*/)S
5400 V
(11155)210 648 A
2034(if)S
((rp->p_alarm)504 2160 A
2706(<=)S
(realtime))378 2832 A
3252({)S
5490 V
(11156)210 648 A
2370(/*)S
2496(A)S
(timer)210 2580 A
(has)126 2832 A
(gone)168 3000 A
(off.)168 3210 A
3462(If)S
3588(it)S
3714(is)S
3840(a)S
(user)168 3924 A
(proc,)210 4134 A
5580 V
(11157)210 648 A
2412(*)S
(send)168 2496 A
2706(it)S
2832(a)S
(signal.)294 2916 A
3294(If)S
3420(it)S
3546(is)S
3672(a)S
(task,)210 3756 A
(call)168 4008 A
(the)126 4218 A
5670 V
(11158)210 648 A
2412(*)S
(function)336 2496 A
(previously)420 2874 A
(specified)378 3336 A
3756(by)S
(the)126 3882 A
(task.)210 4050 A
5760 V
(11159)210 648 A
2412(*/)S
5850 V
(11160)210 648 A
(proc_nr)294 2370 A
2706(=)S
(proc_number(rp);)672 2790 A
5940 V
(11161)210 648 A
2370(if)S
((watch_dog[proc_nr+NR_TASKS]))1218 2496 A
3756({)S
6030 V
(11162)210 648 A
(watchdog_proc=)588 2706 A
(proc_nr;)336 3336 A
6120 V
(11163)210 648 A
((*watch_dog[proc_nr+NR_TASKS])();)1386 2706 A
6210 V
(11164)210 648 A
2370(})S
8418 V
EP
%%Page: 147 147
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2027(File:)S
2260(src/kernel/clock.c)S
12 B
(147)180 4248 A
900 V
7 LST
(11165)210 648 A
(else)168 2370 A
990 V
(11166)210 648 A
(cause_sig(proc_nr,)756 2706 A
(SIGALRM);)378 3504 A
1080 V
(11167)210 648 A
(rp->p_alarm)462 2370 A
2874(=)S
2958(0;)S
1170 V
(11168)210 648 A
2034(})S
1260 V
(11169)210 648 A
1350 V
(11170)210 648 A
2034(/*)S
(Work)168 2160 A
2370(on)S
(determining)462 2496 A
(which)210 3000 A
(alarm)210 3252 A
3504(is)S
(next.)210 3630 A
3882(*/)S
1440 V
(11171)210 648 A
2034(if)S
((rp->p_alarm)504 2160 A
2706(!=)S
2832(0)S
2916(&&)S
(rp->p_alarm)462 3042 A
3546(<)S
(next_alarm))462 3630 A
1530 V
(11172)210 648 A
(next_alarm)420 2370 A
2832(=)S
(rp->p_alarm;)504 2916 A
1620 V
(11173)210 648 A
1698(})S
1710 V
(11174)210 648 A
1362(})S
1800 V
(11175)210 648 A
1110(})S
1890 V
(11176)210 648 A
1980 V
(11177)210 648 A
1110(/*)S
1236(If)S
1362(a)S
(user)168 1446 A
(process)294 1656 A
(has)126 1992 A
(been)168 2160 A
(running)294 2370 A
(too)126 2706 A
(long,)210 2874 A
(pick)168 3126 A
(another)294 3336 A
(one.)168 3672 A
3882(*/)S
2070 V
(11178)210 648 A
1110(if)S
((--sched_ticks)588 1236 A
1866(==)S
1992(0))S
2118({)S
2160 V
(11179)210 648 A
1362(if)S
((bill_ptr)378 1488 A
1908(==)S
(prev_ptr))378 2034 A
(lock_sched();)546 2454 A
3042(/*)S
(process)294 3168 A
(has)126 3504 A
(run)126 3672 A
(too)126 3840 A
(long)168 4008 A
4218(*/)S
2250 V
(11180)210 648 A
(sched_ticks)462 1362 A
1866(=)S
(SCHED_RATE;)462 1950 A
3042(/*)S
(reset)210 3168 A
(quantum)294 3420 A
3756(*/)S
2340 V
(11181)210 648 A
(prev_ptr)336 1362 A
1740(=)S
(bill_ptr;)378 1824 A
3042(/*)S
(new)126 3168 A
(previous)336 3336 A
(process)294 3714 A
4050(*/)S
2430 V
(11182)210 648 A
1110(})S
2520 V
(11183)210 648 A
1026(})S
2790 V
(11186)210 648 A
(/*===========================================================================*)3276 1026 A
2880 V
(11187)210 648 A
1068(*)S
(do_getuptime)504 2370 A
4260(*)S
2970 V
(11188)210 648 A
(*===========================================================================*/)3276 1068 A
3060 V
(11189)210 648 A
(PRIVATE)294 1026 A
(void)168 1362 A
(do_getuptime())588 1572 A
3150 V
(11190)210 648 A
1026({)S
3240 V
(11191)210 648 A
1026(/*)S
(Get)126 1152 A
(and)126 1320 A
(return)252 1488 A
(the)126 1782 A
(current)294 1950 A
(clock)210 2286 A
(uptime)252 2538 A
2832(in)S
(ticks.)252 2958 A
3252(*/)S
3330 V
(11192)210 648 A
3420 V
(11193)210 648 A
(mc.NEW_TIME)462 1110 A
1614(=)S
(realtime;)378 1698 A
2370(/*)S
(current)294 2496 A
(uptime)252 2832 A
3126(*/)S
3510 V
(11194)210 648 A
1026(})S
3780 V
(11197)210 648 A
(/*===========================================================================*)3276 1026 A
3870 V
(11198)210 648 A
1068(*)S
(get_uptime)420 2370 A
4260(*)S
3960 V
(11199)210 648 A
(*===========================================================================*/)3276 1068 A
4050 V
(11200)210 648 A
(PUBLIC)252 1026 A
(clock_t)294 1320 A
(get_uptime())504 1656 A
4140 V
(11201)210 648 A
1026({)S
4230 V
(11202)210 648 A
1026(/*)S
(Get)126 1152 A
(and)126 1320 A
(return)252 1488 A
(the)126 1782 A
(current)294 1950 A
(clock)210 2286 A
(uptime)252 2538 A
2832(in)S
(ticks.)252 2958 A
(This)168 3294 A
(function)336 3504 A
3882(is)S
4320 V
(11203)210 648 A
1068(*)S
(designed)336 1152 A
1530(to)S
1656(be)S
(called)252 1782 A
(from)168 2076 A
(other)210 2286 A
(tasks,)252 2538 A
2832(so)S
(they)168 2958 A
(can)126 3168 A
(get)126 3336 A
(uptime)252 3504 A
(without)294 3798 A
4410 V
(11204)210 648 A
1068(*)S
(the)126 1152 A
(overhead)336 1320 A
1698(of)S
(messages.)378 1824 A
2244(It)S
(has)126 2370 A
2538(to)S
2664(be)S
(careful)294 2790 A
(about)210 3126 A
(pending_ticks.)588 3378 A
4500 V
(11205)210 648 A
1068(*/)S
4590 V
(11206)210 648 A
4680 V
(11207)210 648 A
(clock_t)294 1110 A
(uptime;)294 1446 A
4770 V
(11208)210 648 A
4860 V
(11209)210 648 A
(lock();)294 1110 A
4950 V
(11210)210 648 A
(uptime)252 1110 A
1404(=)S
(realtime)336 1488 A
1866(+)S
(pending_ticks;)588 1950 A
5040 V
(11211)210 648 A
(unlock();)378 1110 A
5130 V
(11212)210 648 A
(return(uptime);)630 1110 A
5220 V
(11213)210 648 A
1026(})S
5490 V
(11216)210 648 A
(/*===========================================================================*)3276 1026 A
5580 V
(11217)210 648 A
1068(*)S
(do_get_time)462 2370 A
4260(*)S
5670 V
(11218)210 648 A
(*===========================================================================*/)3276 1068 A
5760 V
(11219)210 648 A
(PRIVATE)294 1026 A
(void)168 1362 A
(do_get_time())546 1572 A
5850 V
(11220)210 648 A
1026({)S
5940 V
(11221)210 648 A
1026(/*)S
(Get)126 1152 A
(and)126 1320 A
(return)252 1488 A
(the)126 1782 A
(current)294 1950 A
(clock)210 2286 A
(time)168 2538 A
2748(in)S
(seconds.)336 2874 A
3252(*/)S
6030 V
(11222)210 648 A
6120 V
(11223)210 648 A
(mc.NEW_TIME)462 1110 A
1614(=)S
(boot_time)378 1698 A
2118(+)S
(realtime/HZ;)504 2202 A
3042(/*)S
(current)294 3168 A
(real)168 3504 A
(time)168 3714 A
3924(*/)S
6210 V
(11224)210 648 A
1026(})S
8418 V
EP
%%Page: 148 148
BP
/slant 0 def
/height 0 def
630 V
12 B
(148)180 648 A
11 R
2027(File:)S
2260(src/kernel/clock.c)S
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
1080 V
7 LST
(11227)210 648 A
(/*===========================================================================*)3276 1026 A
1170 V
(11228)210 648 A
1068(*)S
(do_set_time)462 2370 A
4260(*)S
1260 V
(11229)210 648 A
(*===========================================================================*/)3276 1068 A
1350 V
(11230)210 648 A
(PRIVATE)294 1026 A
(void)168 1362 A
(do_set_time(m_ptr))756 1572 A
1440 V
(11231)210 648 A
(message)294 1026 A
(*m_ptr;)294 1362 A
2370(/*)S
(pointer)294 2496 A
2832(to)S
(request)294 2958 A
(message)294 3294 A
3630(*/)S
1530 V
(11232)210 648 A
1026({)S
1620 V
(11233)210 648 A
1026(/*)S
(Set)126 1152 A
(the)126 1320 A
(real)168 1488 A
(time)168 1698 A
(clock.)252 1908 A
(Only)168 2244 A
(the)126 2454 A
(superuser)378 2622 A
(can)126 3042 A
(use)126 3210 A
(this)168 3378 A
(call.)210 3588 A
3840(*/)S
1710 V
(11234)210 648 A
1800 V
(11235)210 648 A
(boot_time)378 1110 A
1530(=)S
(m_ptr->NEW_TIME)630 1614 A
2286(-)S
(realtime/HZ;)504 2370 A
1890 V
(11236)210 648 A
1026(})S
2160 V
(11239)210 648 A
(/*===========================================================================*)3276 1026 A
2250 V
(11240)210 648 A
1068(*)S
(do_setalarm)462 2370 A
4260(*)S
2340 V
(11241)210 648 A
(*===========================================================================*/)3276 1068 A
2430 V
(11242)210 648 A
(PRIVATE)294 1026 A
(void)168 1362 A
(do_setalarm(m_ptr))756 1572 A
2520 V
(11243)210 648 A
(message)294 1026 A
(*m_ptr;)294 1362 A
2370(/*)S
(pointer)294 2496 A
2832(to)S
(request)294 2958 A
(message)294 3294 A
3630(*/)S
2610 V
(11244)210 648 A
1026({)S
2700 V
(11245)210 648 A
1026(/*)S
1152(A)S
(process)294 1236 A
(wants)210 1572 A
1824(an)S
(alarm)210 1950 A
(signal)252 2202 A
2496(or)S
2622(a)S
(task)168 2706 A
(wants)210 2916 A
3168(a)S
(given)210 3252 A
(watch_dog)378 3504 A
(function)336 3924 A
2790 V
(11246)210 648 A
1068(*)S
(called)252 1152 A
(after)210 1446 A
1698(a)S
(specified)378 1782 A
(interval.)378 2202 A
2880 V
(11247)210 648 A
1068(*/)S
2970 V
(11248)210 648 A
3060 V
(11249)210 648 A
(register)336 1110 A
(struct)252 1488 A
(proc)168 1782 A
(*rp;)168 1992 A
3150 V
(11250)210 648 A
(int)126 1110 A
(proc_nr;)336 1278 A
2370(/*)S
(which)210 2496 A
(process)294 2748 A
(wants)210 3084 A
(the)126 3336 A
(alarm)210 3504 A
3756(*/)S
3240 V
(11251)210 648 A
(long)168 1110 A
(delta_ticks;)504 1320 A
2370(/*)S
2496(in)S
(how)126 2622 A
(many)168 2790 A
(clock)210 3000 A
(ticks)210 3252 A
(does)168 3504 A
3714(he)S
(want)168 3840 A
(it?)126 4050 A
4218(*/)S
3330 V
(11252)210 648 A
(watchdog_t)420 1110 A
(function;)378 1572 A
2370(/*)S
(function)336 2496 A
2874(to)S
(call)168 3000 A
((tasks)252 3210 A
(only))210 3504 A
3756(*/)S
3420 V
(11253)210 648 A
3510 V
(11254)210 648 A
1110(/*)S
(Extract)294 1236 A
(the)126 1572 A
(parameters)420 1740 A
(from)168 2202 A
(the)126 2412 A
(message.)336 2580 A
2958(*/)S
3600 V
(11255)210 648 A
(proc_nr)294 1110 A
1446(=)S
(m_ptr->CLOCK_PROC_NR;)882 1530 A
2706(/*)S
(process)294 2832 A
3168(to)S
(interrupt)378 3294 A
(later)210 3714 A
3966(*/)S
3690 V
(11256)210 648 A
(delta_ticks)462 1110 A
1614(=)S
(m_ptr->DELTA_TICKS;)798 1698 A
2706(/*)S
(how)126 2832 A
(many)168 3000 A
(ticks)210 3210 A
3462(to)S
(wait)168 3588 A
3798(*/)S
3780 V
(11257)210 648 A
(function)336 1110 A
1488(=)S
((watchdog_t))504 1572 A
(m_ptr->FUNC_TO_CALL;)840 2118 A
3870 V
(11258)210 648 A
2706(/*)S
(function)336 2832 A
3210(to)S
(call)168 3336 A
((tasks)252 3546 A
(only))210 3840 A
4092(*/)S
3960 V
(11259)210 648 A
1110(rp)S
1236(=)S
(proc_addr(proc_nr);)798 1320 A
4050 V
(11260)210 648 A
(mc.SECONDS_LEFT)630 1110 A
1782(=)S
((rp->p_alarm)504 1866 A
2412(==)S
2538(0)S
2622(?)S
2706(0)S
2790(:)S
((rp->p_alarm)504 2874 A
3420(-)S
(realtime)/HZ)504 3504 A
4050();)S
4140 V
(11261)210 648 A
1110(if)S
((!istaskp(rp)))588 1236 A
(function=)378 1866 A
2286(0;)S
2706(/*)S
(user)168 2832 A
(processes)378 3042 A
(get)126 3462 A
(signaled)336 3630 A
4008(*/)S
4230 V
(11262)210 648 A
(common_setalarm(proc_nr,)1008 1110 A
(delta_ticks,)504 2160 A
(function);)420 2706 A
4320 V
(11263)210 648 A
1026(})S
4590 V
(11266)210 648 A
(/*===========================================================================*)3276 1026 A
4680 V
(11267)210 648 A
1068(*)S
(do_setsyn_alrm)588 2370 A
4260(*)S
4770 V
(11268)210 648 A
(*===========================================================================*/)3276 1068 A
4860 V
(11269)210 648 A
(PRIVATE)294 1026 A
(void)168 1362 A
(do_setsyn_alrm(m_ptr))882 1572 A
4950 V
(11270)210 648 A
(message)294 1026 A
(*m_ptr;)294 1362 A
2370(/*)S
(pointer)294 2496 A
2832(to)S
(request)294 2958 A
(message)294 3294 A
3630(*/)S
5040 V
(11271)210 648 A
1026({)S
5130 V
(11272)210 648 A
1026(/*)S
1152(A)S
(process)294 1236 A
(wants)210 1572 A
1824(a)S
(synchronous)462 1908 A
(alarm.)252 2412 A
5220 V
(11273)210 648 A
1068(*/)S
5310 V
(11274)210 648 A
5400 V
(11275)210 648 A
(register)336 1110 A
(struct)252 1488 A
(proc)168 1782 A
(*rp;)168 1992 A
5490 V
(11276)210 648 A
(int)126 1110 A
(proc_nr;)336 1278 A
2370(/*)S
(which)210 2496 A
(process)294 2748 A
(wants)210 3084 A
(the)126 3336 A
(alarm)210 3504 A
3756(*/)S
5580 V
(11277)210 648 A
(long)168 1110 A
(delta_ticks;)504 1320 A
2370(/*)S
2496(in)S
(how)126 2622 A
(many)168 2790 A
(clock)210 3000 A
(ticks)210 3252 A
(does)168 3504 A
3714(he)S
(want)168 3840 A
(it?)126 4050 A
4218(*/)S
5670 V
(11278)210 648 A
5760 V
(11279)210 648 A
1110(/*)S
(Extract)294 1236 A
(the)126 1572 A
(parameters)420 1740 A
(from)168 2202 A
(the)126 2412 A
(message.)336 2580 A
2958(*/)S
5850 V
(11280)210 648 A
(proc_nr)294 1110 A
1446(=)S
(m_ptr->CLOCK_PROC_NR;)882 1530 A
2706(/*)S
(process)294 2832 A
3168(to)S
(interrupt)378 3294 A
(later)210 3714 A
3966(*/)S
5940 V
(11281)210 648 A
(delta_ticks)462 1110 A
1614(=)S
(m_ptr->DELTA_TICKS;)798 1698 A
2706(/*)S
(how)126 2832 A
(many)168 3000 A
(ticks)210 3210 A
3462(to)S
(wait)168 3588 A
3798(*/)S
6030 V
(11282)210 648 A
1110(rp)S
1236(=)S
(proc_addr(proc_nr);)798 1320 A
6120 V
(11283)210 648 A
(mc.SECONDS_LEFT)630 1110 A
1782(=)S
((rp->p_alarm)504 1866 A
2412(==)S
2538(0)S
2622(?)S
2706(0)S
2790(:)S
((rp->p_alarm)504 2874 A
3420(-)S
(realtime)/HZ)504 3504 A
4050();)S
6210 V
(11284)210 648 A
(common_setalarm(proc_nr,)1008 1110 A
(delta_ticks,)504 2160 A
(cause_alarm);)546 2706 A
8418 V
EP
%%Page: 149 149
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2027(File:)S
2260(src/kernel/clock.c)S
12 B
(149)180 4248 A
900 V
7 LST
(11285)210 648 A
1026(})S
1170 V
(11288)210 648 A
(/*===========================================================================*)3276 1026 A
1260 V
(11289)210 648 A
1068(*)S
(common_setalarm)630 2370 A
4260(*)S
1350 V
(11290)210 648 A
(*===========================================================================*/)3276 1068 A
1440 V
(11291)210 648 A
(PRIVATE)294 1026 A
(void)168 1362 A
(common_setalarm(proc_nr,)1008 1572 A
(delta_ticks,)504 2622 A
(function))378 3168 A
1530 V
(11292)210 648 A
(int)126 1026 A
(proc_nr;)336 1194 A
2370(/*)S
(which)210 2496 A
(process)294 2748 A
(wants)210 3084 A
(the)126 3336 A
(alarm)210 3504 A
3756(*/)S
1620 V
(11293)210 648 A
(long)168 1026 A
(delta_ticks;)504 1236 A
2370(/*)S
2496(in)S
(how)126 2622 A
(many)168 2790 A
(clock)210 3000 A
(ticks)210 3252 A
(does)168 3504 A
3714(he)S
(want)168 3840 A
(it?)126 4050 A
4218(*/)S
1710 V
(11294)210 648 A
(watchdog_t)420 1026 A
(function;)378 1488 A
2370(/*)S
(function)336 2496 A
2874(to)S
(call)168 3000 A
3210((0)S
3336(if)S
(cause_sig)378 3462 A
3882(is)S
1800 V
(11295)210 648 A
2412(*)S
2496(to)S
2622(be)S
(called)252 2748 A
3042(*/)S
1890 V
(11296)210 648 A
1026({)S
1980 V
(11297)210 648 A
1026(/*)S
(Finish)252 1152 A
1446(up)S
(work)168 1572 A
1782(of)S
(do_set_alarm)504 1908 A
(and)126 2454 A
(do_setsyn_alrm.)630 2622 A
(Record)252 3336 A
3630(an)S
(alarm)210 3756 A
2070 V
(11298)210 648 A
1068(*)S
(request)294 1152 A
(and)126 1488 A
(check)210 1656 A
1908(to)S
(see)126 2034 A
2202(if)S
2328(it)S
2454(is)S
(the)126 2580 A
(next)168 2748 A
(alarm)210 2958 A
(needed.)294 3210 A
2160 V
(11299)210 648 A
1068(*/)S
2250 V
(11300)210 648 A
2340 V
(11301)210 648 A
(register)336 1110 A
(struct)252 1488 A
(proc)168 1782 A
(*rp;)168 1992 A
2430 V
(11302)210 648 A
2520 V
(11303)210 648 A
1110(rp)S
1236(=)S
(proc_addr(proc_nr);)798 1320 A
2610 V
(11304)210 648 A
(rp->p_alarm)462 1110 A
1614(=)S
((delta_ticks)504 1698 A
2244(==)S
2370(0)S
2454(?)S
2538(0)S
2622(:)S
(realtime)336 2706 A
3084(+)S
(delta_ticks);)546 3168 A
2700 V
(11305)210 648 A
(watch_dog[proc_nr+NR_TASKS])1134 1110 A
2286(=)S
(function;)378 2370 A
2790 V
(11306)210 648 A
2880 V
(11307)210 648 A
1110(/*)S
(Which)210 1236 A
(alarm)210 1488 A
1740(is)S
(next?)210 1866 A
2118(*/)S
2970 V
(11308)210 648 A
(next_alarm)420 1110 A
1572(=)S
(LONG_MAX;)378 1656 A
3060 V
(11309)210 648 A
(for)126 1110 A
((rp)126 1278 A
1446(=)S
(BEG_PROC_ADDR;)588 1530 A
2160(rp)S
2286(<)S
(END_PROC_ADDR;)588 2370 A
(rp++))210 3000 A
3150 V
(11310)210 648 A
(if(rp->p_alarm)588 1362 A
1992(!=)S
2118(0)S
2202(&&)S
(rp->p_alarm)462 2328 A
2832(<)S
(next_alarm)next_alarm=rp->p_alarm;)1428 2916 A
3240 V
(11311)210 648 A
3330 V
(11312)210 648 A
1026(})S
3600 V
(11315)210 648 A
(/*===========================================================================*)3276 1026 A
3690 V
(11316)210 648 A
1068(*)S
(cause_alarm)462 2370 A
4260(*)S
3780 V
(11317)210 648 A
(*===========================================================================*/)3276 1068 A
3870 V
(11318)210 648 A
(PRIVATE)294 1026 A
(void)168 1362 A
(cause_alarm())546 1572 A
3960 V
(11319)210 648 A
1026({)S
4050 V
(11320)210 648 A
1026(/*)S
(Routine)294 1152 A
(called)252 1488 A
1782(if)S
1908(a)S
(timer)210 1992 A
(goes)168 2244 A
(off)126 2454 A
(and)126 2622 A
(the)126 2790 A
(process)294 2958 A
(requested)378 3294 A
3714(a)S
(synchronous)462 3798 A
4140 V
(11321)210 648 A
1068(*)S
(alarm.)252 1152 A
(The)126 1446 A
(process)294 1614 A
(number)252 1950 A
2244(is)S
2370(in)S
(the)126 2496 A
(global)252 2664 A
(variable)336 2958 A
(watchdog_proc)546 3336 A
((HACK).)294 3924 A
4230 V
(11322)210 648 A
1068(*/)S
4320 V
(11323)210 648 A
(message)294 1110 A
(mess;)210 1446 A
4410 V
(11324)210 648 A
4500 V
(11325)210 648 A
(syn_table[watchdog_proc)966 1110 A
2118(+)S
(NR_TASKS]=)420 2202 A
(TRUE;)210 2664 A
4590 V
(11326)210 648 A
1110(if)S
((!syn_al_alive))630 1236 A
(send)168 1908 A
((SYN_ALRM_TASK,)630 2118 A
(&mess);)294 2790 A
4680 V
(11327)210 648 A
1026(})S
4950 V
(11330)210 648 A
(/*===========================================================================*)3276 1026 A
5040 V
(11331)210 648 A
1068(*)S
(syn_alrm_task)546 2370 A
4260(*)S
5130 V
(11332)210 648 A
(*===========================================================================*/)3276 1068 A
5220 V
(11333)210 648 A
(PUBLIC)252 1026 A
(void)168 1320 A
(syn_alrm_task())630 1530 A
5310 V
(11334)210 648 A
1026({)S
5400 V
(11335)210 648 A
1026(/*)S
(Main)168 1152 A
(program)294 1362 A
1698(of)S
(the)126 1824 A
(synchronous)462 1992 A
(alarm)210 2496 A
(task.)210 2748 A
5490 V
(11336)210 648 A
1068(*)S
(This)168 1152 A
(task)168 1362 A
(receives)336 1572 A
(messages)336 1950 A
(only)168 2328 A
(from)168 2538 A
(cause_alarm)462 2748 A
3252(in)S
(the)126 3378 A
(clock)210 3546 A
(task.)210 3798 A
5580 V
(11337)210 648 A
1068(*)S
1152(It)S
(sends)210 1278 A
1530(a)S
(CLOCK_INT)378 1614 A
(message)294 2034 A
2370(to)S
2496(a)S
(process)294 2580 A
(that)168 2916 A
(requested)378 3126 A
3546(a)S
(syn_alrm.)378 3630 A
5670 V
(11338)210 648 A
1068(*)S
(Synchronous)462 1152 A
(alarms)252 1656 A
(are)126 1950 A
2118(so)S
(called)252 2244 A
(because,)336 2538 A
(unlike)252 2916 A
3210(a)S
(signals)294 3294 A
3630(or)S
(the)126 3756 A
5760 V
(11339)210 648 A
1068(*)S
(activation)420 1152 A
1614(of)S
1740(a)S
(watchdog,)378 1824 A
2244(a)S
(synchronous)462 2328 A
(alarm)210 2832 A
3084(is)S
(received)336 3210 A
3588(by)S
3714(a)S
(process)294 3798 A
5850 V
(11340)210 648 A
1068(*)S
(when)168 1152 A
1362(it)S
1488(is)S
1614(in)S
1740(a)S
(known)210 1824 A
(part)168 2076 A
2286(of)S
(its)126 2412 A
(code,)210 2580 A
(that)168 2832 A
(is,)126 3042 A
(when)168 3210 A
3420(it)S
(has)126 3546 A
(issued)252 3714 A
5940 V
(11341)210 648 A
1068(*)S
1152(a)S
(call)168 1236 A
1446(to)S
(receive)294 1572 A
1908(a)S
(message.)336 1992 A
6030 V
(11342)210 648 A
1068(*/)S
6120 V
(11343)210 648 A
6210 V
(11344)210 648 A
(message)294 1110 A
(mess;)210 1446 A
8418 V
EP
%%Page: 150 150
BP
/slant 0 def
/height 0 def
630 V
12 B
(150)180 648 A
11 R
2027(File:)S
2260(src/kernel/clock.c)S
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(11345)210 648 A
(int)126 1110 A
(work_done;)420 1278 A
2034(/*)S
(ready)210 2160 A
2412(to)S
(sleep)210 2538 A
2790(?)S
2874(*/)S
990 V
(11346)210 648 A
(int)126 1110 A
(*al_ptr;)336 1278 A
2034(/*)S
(pointer)294 2160 A
2496(in)S
(syn_table)378 2622 A
3042(*/)S
1080 V
(11347)210 648 A
(int)126 1110 A
1278(i;)S
1170 V
(11348)210 648 A
1260 V
(11349)210 648 A
(syn_al_alive=)546 1110 A
(TRUE;)210 1698 A
1350 V
(11350)210 648 A
(for)126 1110 A
((i=)126 1278 A
1446(0,)S
(al_ptr=)294 1572 A
(syn_table;)420 1908 A
(i<NR_TASKS+NR_PROCS;)840 2370 A
(i++,)168 3252 A
(al_ptr++))378 3462 A
1440 V
(11351)210 648 A
(*al_ptr=)336 1362 A
(FALSE;)252 1740 A
1530 V
(11352)210 648 A
1620 V
(11353)210 648 A
(while)210 1110 A
((TRUE))252 1362 A
1656({)S
1710 V
(11354)210 648 A
(work_done=)420 1362 A
(TRUE;)210 1824 A
1800 V
(11355)210 648 A
(for)126 1362 A
((i=)126 1530 A
1698(0,)S
(al_ptr=)294 1824 A
(syn_table;)420 2160 A
(i<NR_TASKS+NR_PROCS;)840 2622 A
(i++,)168 3504 A
(al_ptr++))378 3714 A
1890 V
(11356)210 648 A
1698(if)S
((*al_ptr))378 1824 A
2244({)S
1980 V
(11357)210 648 A
(*al_ptr=)336 2034 A
(FALSE;)252 2412 A
2070 V
(11358)210 648 A
(mess.m_type=)504 2034 A
(CLOCK_INT;)420 2580 A
2160 V
(11359)210 648 A
(send)168 2034 A
((i-NR_TASKS,)504 2244 A
(&mess);)294 2790 A
2250 V
(11360)210 648 A
(work_done=)420 2034 A
(FALSE;)252 2496 A
2340 V
(11361)210 648 A
1698(})S
2430 V
(11362)210 648 A
1362(if)S
((work_done))462 1488 A
1992({)S
2520 V
(11363)210 648 A
(syn_al_alive=)546 1698 A
(FALSE;)252 2286 A
2610 V
(11364)210 648 A
(receive)294 1698 A
((CLOCK,)294 2034 A
(&mess);)294 2370 A
2700 V
(11365)210 648 A
(syn_al_alive=)546 1698 A
(TRUE;)210 2286 A
2790 V
(11366)210 648 A
1362(})S
2880 V
(11367)210 648 A
1110(})S
2970 V
(11368)210 648 A
1026(})S
3240 V
(11371)210 648 A
(/*===========================================================================*)3276 1026 A
3330 V
(11372)210 648 A
1068(*)S
(clock_handler)546 2370 A
4260(*)S
3420 V
(11373)210 648 A
(*===========================================================================*/)3276 1068 A
3510 V
(11374)210 648 A
(PRIVATE)294 1026 A
(int)126 1362 A
(clock_handler(irq))756 1530 A
3600 V
(11375)210 648 A
(int)126 1026 A
(irq;)168 1194 A
3690 V
(11376)210 648 A
1026({)S
3780 V
(11377)210 648 A
1026(/*)S
(This)168 1152 A
(executes)336 1362 A
1740(on)S
(every)210 1866 A
(clock)210 2118 A
(tick)168 2370 A
((i.e.,)252 2580 A
(every)210 2874 A
(time)168 3126 A
(the)126 3336 A
(timer)210 3504 A
(chip)168 3756 A
3870 V
(11378)210 648 A
1068(*)S
(generates)378 1152 A
1572(an)S
(interrupt).)462 1698 A
2202(It)S
(does)168 2328 A
2538(a)S
(little)252 2622 A
(bit)126 2916 A
3084(of)S
(work)168 3210 A
3420(so)S
(the)126 3546 A
(clock)210 3714 A
3960 V
(11379)210 648 A
1068(*)S
(task)168 1152 A
(does)168 1362 A
(not)126 1572 A
(have)168 1740 A
1950(to)S
2076(be)S
(called)252 2202 A
2496(on)S
(every)210 2622 A
(tick.)210 2874 A
4050 V
(11380)210 648 A
1068(*)S
4140 V
(11381)210 648 A
1068(*)S
(Switch)252 1152 A
(context)294 1446 A
1782(to)S
(do_clocktick)504 1908 A
2454(if)S
2580(an)S
(alarm)210 2706 A
(has)126 2958 A
(gone)168 3126 A
(off.)168 3336 A
4230 V
(11382)210 648 A
1068(*)S
(Also)168 1152 A
(switch)252 1362 A
(there)210 1656 A
1908(to)S
(reschedule)420 2034 A
2496(if)S
(the)126 2622 A
(reschedule)420 2790 A
(will)168 3252 A
3462(do)S
(something.)420 3588 A
4320 V
(11383)210 648 A
1068(*)S
(This)168 1152 A
(happens)294 1362 A
(when)168 1698 A
4410 V
(11384)210 648 A
1068(*)S
((1))126 1362 A
(quantum)294 1530 A
(has)126 1866 A
(expired)294 2034 A
4500 V
(11385)210 648 A
1068(*)S
((2))126 1362 A
(current)294 1530 A
(process)294 1866 A
(received)336 2202 A
(full)168 2580 A
(quantum)294 2790 A
((as)126 3126 A
(clock)210 3294 A
(sampled)294 3546 A
(it!))168 3882 A
4590 V
(11386)210 648 A
1068(*)S
((3))126 1362 A
(something)378 1530 A
(else)168 1950 A
2160(is)S
(ready)210 2286 A
2538(to)S
(run.)168 2664 A
4680 V
(11387)210 648 A
1068(*)S
(Also)168 1152 A
(call)168 1362 A
(TTY)126 1572 A
(and)126 1740 A
(PRINTER)294 1908 A
(and)126 2244 A
(let)126 2412 A
(them)168 2580 A
2790(do)S
(whatever)336 2916 A
3294(is)S
(necessary.)420 3420 A
4770 V
(11388)210 648 A
1068(*)S
4860 V
(11389)210 648 A
1068(*)S
(Many)168 1152 A
(global)252 1362 A
(global)252 1656 A
(and)126 1950 A
(static)252 2118 A
(variables)378 2412 A
(are)126 2832 A
(accessed)336 3000 A
(here.)210 3378 A
(The)126 3672 A
(safety)252 3840 A
4950 V
(11390)210 648 A
1068(*)S
1152(of)S
(this)168 1278 A
(must)168 1488 A
1698(be)S
(justified.)420 1824 A
(Most)168 2328 A
2538(of)S
(them)168 2664 A
(are)126 2874 A
(not)126 3042 A
(changed)294 3210 A
(here:)210 3546 A
5040 V
(11391)210 648 A
1068(*)S
(k_reenter:)420 1362 A
5130 V
(11392)210 648 A
1068(*)S
(This)168 1698 A
(safely)252 1908 A
(tells)210 2202 A
2454(if)S
(the)126 2580 A
(clock)210 2748 A
(interrupt)378 3000 A
3420(is)S
(nested.)294 3546 A
5220 V
(11393)210 648 A
1068(*)S
(proc_ptr,)378 1362 A
(bill_ptr:)378 1782 A
5310 V
(11394)210 648 A
1068(*)S
(These)210 1698 A
(are)126 1950 A
(used)168 2118 A
(for)126 2328 A
(accounting.)462 2496 A
3042(It)S
(does)168 3168 A
(not)126 3378 A
(matter)252 3546 A
3840(if)S
(proc.c)252 3966 A
5400 V
(11395)210 648 A
1068(*)S
1698(is)S
(changing)336 1824 A
(them,)210 2202 A
(provided)336 2454 A
(they)168 2832 A
(are)126 3042 A
(always)252 3210 A
(valid)210 3504 A
(pointers,)378 3756 A
5490 V
(11396)210 648 A
1068(*)S
(since)210 1698 A
1950(at)S
(worst)210 2076 A
(the)126 2328 A
(previous)336 2496 A
(process)294 2874 A
(would)210 3210 A
3462(be)S
(billed.)294 3588 A
5580 V
(11397)210 648 A
1068(*)S
(next_alarm,)462 1362 A
(realtime,)378 1866 A
(sched_ticks,)504 2286 A
(bill_ptr,)378 2832 A
(prev_ptr,)378 3252 A
5670 V
(11398)210 648 A
1068(*)S
(rdy_head[USER_Q]:)714 1362 A
5760 V
(11399)210 648 A
1068(*)S
(These)210 1698 A
(are)126 1950 A
(tested)252 2118 A
2412(to)S
(decide)252 2538 A
(whether)294 2832 A
3168(to)S
(call)168 3294 A
(interrupt().)504 3504 A
4092(It)S
5850 V
(11400)210 648 A
1068(*)S
(does)168 1698 A
(not)126 1908 A
(matter)252 2076 A
2370(if)S
(the)126 2496 A
(test)168 2664 A
2874(is)S
(sometimes)378 3000 A
((rarely))336 3420 A
(backwards)378 3798 A
5940 V
(11401)210 648 A
1068(*)S
(due)126 1698 A
1866(to)S
1992(a)S
(race,)210 2076 A
(since)210 2328 A
(this)168 2580 A
(will)168 2790 A
(only)168 3000 A
(delay)210 3210 A
(the)126 3462 A
(high-level)420 3630 A
6030 V
(11402)210 648 A
1068(*)S
(processing)420 1698 A
2160(by)S
(one)126 2286 A
(tick,)210 2454 A
2706(or)S
(call)168 2832 A
(the)126 3042 A
(high)168 3210 A
(level)210 3420 A
(unnecessarily.)588 3672 A
6120 V
(11403)210 648 A
1068(*)S
(The)126 1152 A
(variables)378 1320 A
(which)210 1740 A
(are)126 1992 A
(changed)294 2160 A
(require)294 2496 A
(more)168 2832 A
(care:)210 3042 A
6210 V
(11404)210 648 A
1068(*)S
(rp->user_time,)588 1362 A
(rp->sys_time:)546 1992 A
8418 V
EP
%%Page: 151 151
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2027(File:)S
2260(src/kernel/clock.c)S
12 B
(151)180 4248 A
900 V
7 LST
(11405)210 648 A
1068(*)S
(These)210 1698 A
(are)126 1950 A
(protected)378 2118 A
2538(by)S
(explicit)336 2664 A
(locks)210 3042 A
3294(in)S
(system.c.)378 3420 A
(They)168 3882 A
(are)126 4092 A
990 V
(11406)210 648 A
1068(*)S
(not)126 1698 A
(properly)336 1866 A
(protected)378 2244 A
2664(in)S
(dmp.c)210 2790 A
((the)168 3042 A
(increment)378 3252 A
(here)168 3672 A
3882(is)S
(not)126 4008 A
1080 V
(11407)210 648 A
1068(*)S
(atomic))294 1698 A
(but)126 2034 A
(that)168 2202 A
(hardly)252 2412 A
(matters.)336 2706 A
1170 V
(11408)210 648 A
1068(*)S
(pending_ticks:)588 1362 A
1260 V
(11409)210 648 A
1068(*)S
(This)168 1698 A
1908(is)S
(protected)378 2034 A
2454(by)S
(explicit)336 2580 A
(locks)210 2958 A
3210(in)S
(clock.c.)336 3336 A
(Don't)210 3756 A
1350 V
(11410)210 648 A
1068(*)S
(update)252 1698 A
(realtime)336 1992 A
(directly,)378 2370 A
(since)210 2790 A
(there)210 3042 A
(are)126 3294 A
(too)126 3462 A
(many)168 3630 A
1440 V
(11411)210 648 A
1068(*)S
(references)420 1698 A
2160(to)S
2286(it)S
2412(to)S
(guard)210 2538 A
(conveniently.)546 2790 A
1530 V
(11412)210 648 A
1068(*)S
(lost_ticks:)462 1362 A
1620 V
(11413)210 648 A
1068(*)S
(Clock)210 1698 A
(ticks)210 1950 A
(counted)294 2202 A
(outside)294 2538 A
(the)126 2874 A
(clock)210 3042 A
(task.)210 3294 A
1710 V
(11414)210 648 A
1068(*)S
(sched_ticks,)504 1362 A
(prev_ptr:)378 1908 A
1800 V
(11415)210 648 A
1068(*)S
(Updating)336 1698 A
(these)210 2076 A
(competes)336 2328 A
(with)168 2706 A
(similar)294 2916 A
(code)168 3252 A
3462(in)S
(do_clocktick().)630 3588 A
1890 V
(11416)210 648 A
1068(*)S
1698(No)S
(lock)168 1824 A
2034(is)S
(necessary,)420 2160 A
(because)294 2622 A
2958(if)S
(bad)126 3084 A
(things)252 3252 A
(happen)252 3546 A
(here)168 3840 A
1980 V
(11417)210 648 A
1068(*)S
((like)210 1698 A
(sched_ticks)462 1950 A
(going)210 2454 A
(negative),)420 2706 A
(the)126 3168 A
(code)168 3336 A
3546(in)S
(do_clocktick())588 3672 A
2070 V
(11418)210 648 A
1068(*)S
(will)168 1698 A
(restore)294 1908 A
(the)126 2244 A
(variables)378 2412 A
2832(to)S
(reasonable)420 2958 A
(values,)294 3420 A
(and)126 3756 A
3924(an)S
2160 V
(11419)210 648 A
1068(*)S
(occasional)420 1698 A
(missed)252 2160 A
2454(or)S
(extra)210 2580 A
(sched())294 2832 A
3168(is)S
(harmless.)378 3294 A
2250 V
(11420)210 648 A
1068(*)S
2340 V
(11421)210 648 A
1068(*)S
(Are)126 1152 A
(these)210 1320 A
(complications)546 1572 A
(worth)210 2160 A
(the)126 2412 A
(trouble?)336 2580 A
(Well,)210 3000 A
(they)168 3252 A
(make)168 3462 A
(the)126 3672 A
(system)252 3840 A
(15%)126 4134 A
2430 V
(11422)210 648 A
1068(*)S
(faster)252 1152 A
1446(on)S
1572(a)S
(5MHz)168 1656 A
(8088,)210 1866 A
(and)126 2118 A
(make)168 2286 A
(task)168 2496 A
(debugging)378 2706 A
(much)168 3126 A
(easier)252 3336 A
(since)210 3630 A
(there)210 3882 A
(are)126 4134 A
2520 V
(11423)210 648 A
1068(*)S
1152(no)S
(task)168 1278 A
(switches)336 1488 A
1866(on)S
1992(an)S
(inactive)336 2118 A
(system.)294 2496 A
2610 V
(11424)210 648 A
1068(*/)S
2700 V
(11425)210 648 A
2790 V
(11426)210 648 A
(register)336 1110 A
(struct)252 1488 A
(proc)168 1782 A
(*rp;)168 1992 A
2880 V
(11427)210 648 A
(register)336 1110 A
(unsigned)336 1488 A
(ticks;)252 1866 A
2970 V
(11428)210 648 A
(clock_t)294 1110 A
(now;)168 1446 A
3060 V
(11429)210 648 A
3150 V
(11430)210 648 A
1110(if)S
((ps_mca))336 1236 A
1614({)S
3240 V
(11431)210 648 A
1362(/*)S
(Acknowledge)462 1488 A
(the)126 1992 A
(PS/2)168 2160 A
(clock)210 2370 A
(interrupt.)420 2622 A
3084(*/)S
3330 V
(11432)210 648 A
(out_byte(PORT_B,)672 1362 A
(in_byte(PORT_B))630 2076 A
2748(|)S
(CLOCK_ACK_BIT);)630 2832 A
3420 V
(11433)210 648 A
1110(})S
3510 V
(11434)210 648 A
3600 V
(11435)210 648 A
1110(/*)S
(Update)252 1236 A
(user)168 1530 A
(and)126 1740 A
(system)252 1908 A
(accounting)420 2202 A
(times.)252 2664 A
3690 V
(11436)210 648 A
1152(*)S
(First)210 1236 A
(charge)252 1488 A
(the)126 1782 A
(current)294 1950 A
(process)294 2286 A
(for)126 2622 A
(user)168 2790 A
(time.)210 3000 A
3780 V
(11437)210 648 A
1152(*)S
1236(If)S
(the)126 1362 A
(current)294 1530 A
(process)294 1866 A
2202(is)S
(not)126 2328 A
(the)126 2496 A
(billable)336 2664 A
(process)294 3042 A
((usually)336 3378 A
(because)294 3756 A
4092(it)S
3870 V
(11438)210 648 A
1152(*)S
1236(is)S
1362(a)S
(task),)252 1446 A
(charge)252 1740 A
(the)126 2034 A
(billable)336 2202 A
(process)294 2580 A
(for)126 2916 A
(system)252 3084 A
(time)168 3378 A
3588(as)S
(well.)210 3714 A
3960 V
(11439)210 648 A
1152(*)S
(Thus)168 1236 A
(the)126 1446 A
(unbillable)420 1614 A
(tasks')252 2076 A
(user)168 2370 A
(time)168 2580 A
2790(is)S
(the)126 2916 A
(billable)336 3084 A
(users')252 3462 A
(system)252 3756 A
(time.)210 4050 A
4050 V
(11440)210 648 A
1152(*/)S
4140 V
(11441)210 648 A
1110(if)S
((k_reenter)420 1236 A
1698(!=)S
1824(0))S
4230 V
(11442)210 648 A
1362(rp)S
1488(=)S
(proc_addr(HARDWARE);)840 1572 A
4320 V
(11443)210 648 A
(else)168 1110 A
4410 V
(11444)210 648 A
1362(rp)S
1488(=)S
(proc_ptr;)378 1572 A
4500 V
(11445)210 648 A
(ticks)210 1110 A
1362(=)S
(lost_ticks)420 1446 A
1908(+)S
1992(1;)S
4590 V
(11446)210 648 A
(lost_ticks)420 1110 A
1572(=)S
1656(0;)S
4680 V
(11447)210 648 A
(rp->user_time)546 1110 A
1698(+=)S
(ticks;)252 1824 A
4770 V
(11448)210 648 A
1110(if)S
((rp)126 1236 A
1404(!=)S
(bill_ptr)336 1530 A
1908(&&)S
2034(rp)S
2160(!=)S
(proc_addr(IDLE)))672 2286 A
(bill_ptr->sys_time)756 3000 A
3798(+=)S
(ticks;)252 3924 A
4860 V
(11449)210 648 A
4950 V
(11450)210 648 A
(pending_ticks)546 1110 A
1698(+=)S
(ticks;)252 1824 A
5040 V
(11451)210 648 A
(now)126 1110 A
1278(=)S
(realtime)336 1362 A
1740(+)S
(pending_ticks;)588 1824 A
5130 V
(11452)210 648 A
1110(if)S
((tty_timeout)504 1236 A
1782(<=)S
(now))168 1908 A
(tty_wakeup(now);)672 2118 A
3042(/*)S
(possibly)336 3168 A
(wake)168 3546 A
3756(up)S
(TTY)126 3882 A
4050(*/)S
5220 V
(11453)210 648 A
(pr_restart();)546 1110 A
3042(/*)S
(possibly)336 3168 A
(restart)294 3546 A
(printer)294 3882 A
4218(*/)S
5310 V
(11454)210 648 A
5400 V
(11455)210 648 A
1110(if)S
((next_alarm)462 1236 A
1740(<=)S
(now)126 1866 A
2034(||)S
5490 V
(11456)210 648 A
(sched_ticks)462 1278 A
1782(==)S
1908(1)S
1992(&&)S
5580 V
(11457)210 648 A
(bill_ptr)336 1278 A
1656(==)S
(prev_ptr)336 1782 A
2160(&&)S
5670 V
(11458)210 648 A
(rdy_head[USER_Q])672 1278 A
1992(!=)S
(NIL_PROC))378 2118 A
2538({)S
5760 V
(11459)210 648 A
(interrupt(CLOCK);)714 1362 A
5850 V
(11460)210 648 A
(return)252 1362 A
1656(1;)S
2034(/*)S
(Reenable)336 2160 A
(interrupts)420 2538 A
3000(*/)S
5940 V
(11461)210 648 A
1110(})S
6030 V
(11462)210 648 A
6120 V
(11463)210 648 A
1110(if)S
((--sched_ticks)588 1236 A
1866(==)S
1992(0))S
2118({)S
6210 V
(11464)210 648 A
1362(/*)S
1488(If)S
(bill_ptr)336 1614 A
1992(==)S
(prev_ptr,)378 2118 A
2538(no)S
(ready)210 2664 A
(users)210 2916 A
3168(so)S
(don't)210 3294 A
(need)168 3546 A
(sched().)336 3756 A
4134(*/)S
8418 V
EP
%%Page: 152 152
BP
/slant 0 def
/height 0 def
630 V
12 B
(152)180 648 A
11 R
2027(File:)S
2260(src/kernel/clock.c)S
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(11465)210 648 A
(sched_ticks)462 1362 A
1866(=)S
(SCHED_RATE;)462 1950 A
2706(/*)S
(reset)210 2832 A
(quantum)294 3084 A
3420(*/)S
990 V
(11466)210 648 A
(prev_ptr)336 1362 A
1740(=)S
(bill_ptr;)378 1824 A
2706(/*)S
(new)126 2832 A
(previous)336 3000 A
(process)294 3378 A
3714(*/)S
1080 V
(11467)210 648 A
1110(})S
1170 V
(11468)210 648 A
(return)252 1110 A
1404(1;)S
1698(/*)S
(Reenable)336 1824 A
(clock)210 2202 A
(interrupt)378 2454 A
2874(*/)S
1260 V
(11469)210 648 A
1026(})S
1440 V
(11471)210 648 A
(/*===========================================================================*)3276 1026 A
1530 V
(11472)210 648 A
1068(*)S
(init_clock)420 2370 A
4260(*)S
1620 V
(11473)210 648 A
(*===========================================================================*/)3276 1068 A
1710 V
(11474)210 648 A
(PRIVATE)294 1026 A
(void)168 1362 A
(init_clock())504 1572 A
1800 V
(11475)210 648 A
1026({)S
1890 V
(11476)210 648 A
1026(/*)S
(Initialize)420 1152 A
(channel)294 1614 A
1950(0)S
2034(of)S
(the)126 2160 A
(8253A)210 2328 A
(timer)210 2580 A
2832(to)S
(e.g.)168 2958 A
3168(60)S
(Hz.)126 3294 A
3462(*/)S
1980 V
(11477)210 648 A
2070 V
(11478)210 648 A
(out_byte(TIMER_MODE,)840 1110 A
(SQUARE_WAVE);)546 1992 A
2706(/*)S
(set)126 2832 A
(timer)210 3000 A
3252(to)S
(run)126 3378 A
(continuously)504 3546 A
4092(*/)S
2160 V
(11479)210 648 A
(out_byte(TIMER0,)672 1110 A
(TIMER_COUNT);)546 1824 A
2706(/*)S
(load)168 2832 A
(timer)210 3042 A
(low)126 3294 A
(byte)168 3462 A
3672(*/)S
2250 V
(11480)210 648 A
(out_byte(TIMER0,)672 1110 A
(TIMER_COUNT)462 1824 A
2328(>>)S
(8);)126 2454 A
2706(/*)S
(load)168 2832 A
(timer)210 3042 A
(high)168 3294 A
(byte)168 3504 A
3714(*/)S
2340 V
(11481)210 648 A
(put_irq_handler(CLOCK_IRQ,)1092 1110 A
(clock_handler);)630 2244 A
3042(/*)S
(set)126 3168 A
(the)126 3336 A
(interrupt)378 3504 A
(handler)294 3924 A
4260(*/)S
2430 V
(11482)210 648 A
(enable_irq(CLOCK_IRQ);)924 1110 A
2706(/*)S
(ready)210 2832 A
(for)126 3084 A
(clock)210 3252 A
(interrupts)420 3504 A
3966(*/)S
2520 V
(11483)210 648 A
1026(})S
2790 V
(11486)210 648 A
(/*===========================================================================*)3276 1026 A
2880 V
(11487)210 648 A
1068(*)S
(clock_stop)420 2370 A
4260(*)S
2970 V
(11488)210 648 A
(*===========================================================================*/)3276 1068 A
3060 V
(11489)210 648 A
(PUBLIC)252 1026 A
(void)168 1320 A
(clock_stop())504 1530 A
3150 V
(11490)210 648 A
1026({)S
3240 V
(11491)210 648 A
1026(/*)S
(Reset)210 1152 A
(the)126 1404 A
(clock)210 1572 A
1824(to)S
(the)126 1950 A
(BIOS)168 2118 A
(rate.)210 2328 A
((For)168 2580 A
(rebooting))420 2790 A
3252(*/)S
3330 V
(11492)210 648 A
3420 V
(11493)210 648 A
(out_byte(TIMER_MODE,)840 1110 A
(0x36);)252 1992 A
3510 V
(11494)210 648 A
(out_byte(TIMER0,)672 1110 A
(0);)126 1824 A
3600 V
(11495)210 648 A
(out_byte(TIMER0,)672 1110 A
(0);)126 1824 A
3690 V
(11496)210 648 A
1026(})S
3960 V
(11499)210 648 A
(/*==========================================================================*)3234 1026 A
4050 V
(11500)210 648 A
1068(*)S
(milli_delay)462 2370 A
4218(*)S
4140 V
(11501)210 648 A
(*==========================================================================*/)3234 1068 A
4230 V
(11502)210 648 A
(PUBLIC)252 1026 A
(void)168 1320 A
(milli_delay(millisec))882 1530 A
4320 V
(11503)210 648 A
(unsigned)336 1026 A
(millisec;)378 1404 A
4410 V
(11504)210 648 A
1026({)S
4500 V
(11505)210 648 A
1026(/*)S
(Delay)210 1152 A
(some)168 1404 A
(milliseconds.)546 1614 A
2202(*/)S
4590 V
(11506)210 648 A
4680 V
(11507)210 648 A
(struct)252 1110 A
(milli_state)462 1404 A
(ms;)126 1908 A
4770 V
(11508)210 648 A
4860 V
(11509)210 648 A
(milli_start(&ms);)714 1110 A
4950 V
(11510)210 648 A
(while)210 1110 A
((milli_elapsed(&ms))798 1362 A
2202(<)S
(millisec))378 2286 A
2706({})S
5040 V
(11511)210 648 A
1026(})S
5220 V
(11513)210 648 A
(/*==========================================================================*)3234 1026 A
5310 V
(11514)210 648 A
1068(*)S
(milli_start)462 2370 A
4218(*)S
5400 V
(11515)210 648 A
(*==========================================================================*/)3234 1068 A
5490 V
(11516)210 648 A
(PUBLIC)252 1026 A
(void)168 1320 A
(milli_start(msp))672 1530 A
5580 V
(11517)210 648 A
(struct)252 1026 A
(milli_state)462 1320 A
(*msp;)210 1824 A
5670 V
(11518)210 648 A
1026({)S
5760 V
(11519)210 648 A
1026(/*)S
(Prepare)294 1152 A
(for)126 1488 A
(calls)210 1656 A
1908(to)S
(milli_elapsed().)672 2034 A
2748(*/)S
5850 V
(11520)210 648 A
5940 V
(11521)210 648 A
(msp->prev_count)630 1110 A
1782(=)S
1866(0;)S
6030 V
(11522)210 648 A
(msp->accum_count)672 1110 A
1824(=)S
1908(0;)S
6120 V
(11523)210 648 A
1026(})S
8418 V
EP
%%Page: 153 153
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2027(File:)S
2260(src/kernel/clock.c)S
12 B
(153)180 4248 A
990 V
7 LST
(11526)210 648 A
(/*==========================================================================*)3234 1026 A
1080 V
(11527)210 648 A
1068(*)S
(milli_elapsed)546 2370 A
4218(*)S
1170 V
(11528)210 648 A
(*==========================================================================*/)3234 1068 A
1260 V
(11529)210 648 A
(PUBLIC)252 1026 A
(unsigned)336 1320 A
(milli_elapsed(msp))756 1698 A
1350 V
(11530)210 648 A
(struct)252 1026 A
(milli_state)462 1320 A
(*msp;)210 1824 A
1440 V
(11531)210 648 A
1026({)S
1530 V
(11532)210 648 A
1026(/*)S
(Return)252 1152 A
(the)126 1446 A
(number)252 1614 A
1908(of)S
(milliseconds)504 2034 A
(since)210 2580 A
(the)126 2832 A
(call)168 3000 A
3210(to)S
(milli_start().)588 3336 A
(Must)168 4008 A
4218(be)S
1620 V
(11533)210 648 A
1068(*)S
(polled)252 1152 A
(rapidly.)336 1446 A
1710 V
(11534)210 648 A
1068(*/)S
1800 V
(11535)210 648 A
(unsigned)336 1110 A
(count;)252 1488 A
1890 V
(11536)210 648 A
1980 V
(11537)210 648 A
1110(/*)S
(Read)168 1236 A
(the)126 1446 A
(counter)294 1614 A
(for)126 1950 A
(channel)294 2118 A
2454(0)S
2538(of)S
(the)126 2664 A
(8253A)210 2832 A
(timer.)252 3084 A
(The)126 3420 A
(counter)294 3588 A
2070 V
(11538)210 648 A
1152(*)S
(decrements)420 1236 A
1698(at)S
(twice)210 1824 A
(the)126 2076 A
(timer)210 2244 A
(frequency)378 2496 A
((one)168 2916 A
(full)168 3126 A
(cycle)210 3336 A
(for)126 3588 A
(each)168 3756 A
2160 V
(11539)210 648 A
1152(*)S
(half)168 1236 A
1446(of)S
(square)252 1572 A
(wave).)252 1866 A
(The)126 2202 A
(counter)294 2370 A
(normally)336 2706 A
(has)126 3084 A
3252(a)S
(value)210 3336 A
(between)294 3588 A
3924(0)S
2250 V
(11540)210 648 A
1152(*)S
(and)126 1236 A
(TIMER_COUNT,)504 1404 A
(but)126 1950 A
(before)252 2118 A
(the)126 2412 A
(clock)210 2580 A
(task)168 2832 A
(has)126 3042 A
(been)168 3210 A
(initialized,)504 3420 A
2340 V
(11541)210 648 A
1152(*)S
(its)126 1236 A
(maximum)294 1404 A
(value)210 1740 A
1992(is)S
(65535,)252 2118 A
2412(as)S
(set)126 2538 A
2706(by)S
(the)126 2832 A
(BIOS.)210 3000 A
2430 V
(11542)210 648 A
1152(*/)S
2520 V
(11543)210 648 A
(out_byte(TIMER_MODE,)840 1110 A
(LATCH_COUNT);)546 1992 A
2706(/*)S
(make)168 2832 A
(chip)168 3042 A
(copy)168 3252 A
(count)210 3462 A
3714(to)S
(latch)210 3840 A
4092(*/)S
2610 V
(11544)210 648 A
(count)210 1110 A
1362(=)S
(in_byte(TIMER0);)672 1446 A
2370(/*)S
(countdown)378 2496 A
(continues)378 2916 A
(during)252 3336 A
(2-step)252 3630 A
(read)168 3924 A
4134(*/)S
2700 V
(11545)210 648 A
(count)210 1110 A
1362(|=)S
(in_byte(TIMER0))630 1488 A
2160(<<)S
2286(8;)S
2790 V
(11546)210 648 A
2880 V
(11547)210 648 A
1110(/*)S
(Add)126 1236 A
(difference)420 1404 A
(between)294 1866 A
(previous)336 2202 A
(and)126 2580 A
(new)126 2748 A
(count)210 2916 A
(unless)252 3168 A
(the)126 3462 A
(counter)294 3630 A
(has)126 3966 A
2970 V
(11548)210 648 A
1152(*)S
(increased)378 1236 A
((restarted)420 1656 A
(its)126 2118 A
(cycle).)294 2286 A
2664(We)S
(may)126 2790 A
(lose)168 2958 A
3168(a)S
(tick)168 3252 A
(now)126 3462 A
(and)126 3630 A
(then,)210 3798 A
(but)126 4050 A
3060 V
(11549)210 648 A
1152(*)S
(microsecond)462 1236 A
(precision)378 1740 A
2160(is)S
(not)126 2286 A
(needed.)294 2454 A
3150 V
(11550)210 648 A
1152(*/)S
3240 V
(11551)210 648 A
(msp->accum_count)672 1110 A
1824(+=)S
(count)210 1950 A
2202(<=)S
(msp->prev_count)630 2328 A
3000(?)S
((msp->prev_count)672 3084 A
3798(-)S
(count))252 3882 A
4176(:)S
4260(1;)S
3330 V
(11552)210 648 A
(msp->prev_count)630 1110 A
1782(=)S
(count;)252 1866 A
3420 V
(11553)210 648 A
3510 V
(11554)210 648 A
(return)252 1110 A
(msp->accum_count)672 1404 A
2118(/)S
((TIMER_FREQ)462 2202 A
2706(/)S
(1000);)252 2790 A
3600 V
(11555)210 648 A
1026(})S
4140 V
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
4230 V
(src/kernel/tty.h)672 2034 A
4320 V
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
4500 V
(11600)210 648 A
1026(/*)S
(tty.h)210 1362 A
1614(-)S
(Terminals)378 1698 A
2370(*/)S
4590 V
(11601)210 648 A
4680 V
(11602)210 648 A
(#define)294 1026 A
(TTY_IN_BYTES)504 1362 A
(256)126 2076 A
2370(/*)S
(tty)126 2496 A
(input)210 2664 A
(queue)210 2916 A
(size)168 3168 A
3378(*/)S
4770 V
(11603)210 648 A
(#define)294 1026 A
(TAB_SIZE)336 1362 A
2160(8)S
2370(/*)S
(distance)336 2496 A
(between)294 2874 A
(tab)126 3210 A
(stops)210 3378 A
3630(*/)S
4860 V
(11604)210 648 A
(#define)294 1026 A
(TAB_MASK)336 1362 A
2160(7)S
2370(/*)S
(mask)168 2496 A
2706(to)S
(compute)294 2832 A
3168(a)S
(tab)126 3252 A
(stop)168 3420 A
(position)336 3630 A
4008(*/)S
4950 V
(11605)210 648 A
5040 V
(11606)210 648 A
(#define)294 1026 A
(ESC)126 1362 A
('\33')210 2034 A
2370(/*)S
(escape)252 2496 A
2790(*/)S
5130 V
(11607)210 648 A
5220 V
(11608)210 648 A
(#define)294 1026 A
(O_NOCTTY)336 1362 A
(00400)210 1992 A
2370(/*)S
(from)168 2496 A
(<fcntl.h>,)420 2706 A
3168(or)S
3294(cc)S
(will)168 3420 A
(choke)210 3630 A
3882(*/)S
5310 V
(11609)210 648 A
(#define)294 1026 A
(O_NONBLOCK)420 1362 A
(04000)210 1992 A
5400 V
(11610)210 648 A
5490 V
(11611)210 648 A
(typedef)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
((*devfun_t),)504 2076 A
((struct)294 2622 A
(tty)126 2958 A
(*tp))168 3126 A
3336();)S
5580 V
(11612)210 648 A
(typedef)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
((*devfunarg_t),)630 2076 A
((struct)294 2748 A
(tty)126 3084 A
(*tp,)168 3252 A
(int)126 3462 A
3630(c))S
3756();)S
5670 V
(11613)210 648 A
5760 V
(11614)210 648 A
(typedef)294 1026 A
(struct)252 1362 A
(tty)126 1656 A
1824({)S
5850 V
(11615)210 648 A
(int)126 1110 A
(tty_events;)462 1278 A
2370(/*)S
(set)126 2496 A
(when)168 2664 A
(TTY)126 2874 A
(should)252 3042 A
(inspect)294 3336 A
(this)168 3672 A
(line)168 3882 A
4092(*/)S
5940 V
(11616)210 648 A
6030 V
(11617)210 648 A
1110(/*)S
(Input)210 1236 A
(queue.)252 1488 A
(Typed)210 1824 A
(characters)420 2076 A
(are)126 2538 A
(stored)252 2706 A
(here)168 3000 A
(until)210 3210 A
(read)168 3462 A
3672(by)S
3798(a)S
(program.)336 3882 A
4260(*/)S
6120 V
(11618)210 648 A
(u16_t)210 1110 A
(*tty_inhead;)504 1362 A
2370(/*)S
(pointer)294 2496 A
2832(to)S
(place)210 2958 A
(where)210 3210 A
(next)168 3462 A
(char)168 3672 A
(goes)168 3882 A
4092(*/)S
6210 V
(11619)210 648 A
(u16_t)210 1110 A
(*tty_intail;)504 1362 A
2370(/*)S
(pointer)294 2496 A
2832(to)S
(next)168 2958 A
(char)168 3168 A
3378(to)S
3504(be)S
(given)210 3630 A
3882(to)S
(prog)168 4008 A
4218(*/)S
8418 V
EP
%%Page: 154 154
BP
/slant 0 def
/height 0 def
630 V
12 B
(154)180 648 A
11 R
2086(File:)S
(src/kernel/tty.h)670 2319 A
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(11620)210 648 A
(int)126 1110 A
(tty_incount;)504 1278 A
2370(/*)S
2496(#)S
(chars)210 2580 A
2832(in)S
(the)126 2958 A
(input)210 3126 A
(queue)210 3378 A
3630(*/)S
990 V
(11621)210 648 A
(int)126 1110 A
(tty_eotct;)420 1278 A
2370(/*)S
(number)252 2496 A
2790(of)S
("line)210 2916 A
(breaks")294 3168 A
3504(in)S
(input)210 3630 A
(queue)210 3882 A
4134(*/)S
1080 V
(11622)210 648 A
(devfun_t)336 1110 A
(tty_devread;)504 1488 A
2370(/*)S
(routine)294 2496 A
2832(to)S
(read)168 2958 A
(from)168 3168 A
(low)126 3378 A
(level)210 3546 A
(buffers)294 3798 A
4134(*/)S
1170 V
(11623)210 648 A
(devfun_t)336 1110 A
(tty_icancel;)504 1488 A
2370(/*)S
(cancel)252 2496 A
(any)126 2790 A
(device)252 2958 A
(input)210 3252 A
3504(*/)S
1260 V
(11624)210 648 A
(int)126 1110 A
(tty_min;)336 1278 A
2370(/*)S
(minimum)294 2496 A
(requested)378 2832 A
(#chars)252 3252 A
3546(in)S
(input)210 3672 A
(queue)210 3924 A
4176(*/)S
1350 V
(11625)210 648 A
(clock_t)294 1110 A
(tty_time;)378 1446 A
2370(/*)S
(time)168 2496 A
(when)168 2706 A
(the)126 2916 A
(input)210 3084 A
3336(is)S
(available)378 3462 A
3882(*/)S
1440 V
(11626)210 648 A
(struct)252 1110 A
(tty)126 1404 A
(*tty_timenext;)588 1572 A
2370(/*)S
(for)126 2496 A
2664(a)S
(list)168 2748 A
2958(of)S
(ttys)168 3084 A
(with)168 3294 A
(active)252 3504 A
(timers)252 3798 A
4092(*/)S
1530 V
(11627)210 648 A
1620 V
(11628)210 648 A
1110(/*)S
(Output)252 1236 A
(section.)336 1530 A
1908(*/)S
1710 V
(11629)210 648 A
(devfun_t)336 1110 A
(tty_devwrite;)546 1488 A
2370(/*)S
(routine)294 2496 A
2832(to)S
(start)210 2958 A
(actual)252 3210 A
(device)252 3504 A
(output)252 3798 A
4092(*/)S
1800 V
(11630)210 648 A
(devfunarg_t)462 1110 A
(tty_echo;)378 1614 A
2370(/*)S
(routine)294 2496 A
2832(to)S
(echo)168 2958 A
(characters)420 3168 A
(input)210 3630 A
3882(*/)S
1890 V
(11631)210 648 A
(devfun_t)336 1110 A
(tty_ocancel;)504 1488 A
2370(/*)S
(cancel)252 2496 A
(any)126 2790 A
(ongoing)294 2958 A
(device)252 3294 A
(output)252 3588 A
3882(*/)S
1980 V
(11632)210 648 A
(devfun_t)336 1110 A
(tty_break;)420 1488 A
2370(/*)S
(let)126 2496 A
(the)126 2664 A
(device)252 2832 A
(send)168 3126 A
3336(a)S
(break)210 3420 A
3672(*/)S
2070 V
(11633)210 648 A
2160 V
(11634)210 648 A
1110(/*)S
(Terminal)336 1236 A
(parameters)420 1614 A
(and)126 2076 A
(status.)294 2244 A
2580(*/)S
2250 V
(11635)210 648 A
(int)126 1110 A
(tty_position;)546 1278 A
2370(/*)S
(current)294 2496 A
(position)336 2832 A
3210(on)S
(the)126 3336 A
(screen)252 3504 A
(for)126 3798 A
(echoing)294 3966 A
4302(*/)S
2340 V
(11636)210 648 A
(char)168 1110 A
(tty_reprint;)504 1320 A
2370(/*)S
2496(1)S
(when)168 2580 A
(echoed)252 2790 A
(input)210 3084 A
(messed)252 3336 A
(up,)126 3630 A
(else)168 3798 A
4008(0)S
4092(*/)S
2430 V
(11637)210 648 A
(char)168 1110 A
(tty_escaped;)504 1320 A
2370(/*)S
2496(1)S
(when)168 2580 A
(LNEXT)210 2790 A
((303V))168 3042 A
(just)168 3252 A
(seen,)210 3462 A
(else)168 3714 A
3924(0)S
4008(*/)S
2520 V
(11638)210 648 A
(char)168 1110 A
(tty_inhibited;)588 1320 A
2370(/*)S
2496(1)S
(when)168 2580 A
(STOP)168 2790 A
((303S))168 3000 A
(just)168 3210 A
(seen)168 3420 A
((stops)252 3630 A
(output))294 3924 A
4260(*/)S
2610 V
(11639)210 648 A
(char)168 1110 A
(tty_pgrp;)378 1320 A
2370(/*)S
(slot)168 2496 A
(number)252 2706 A
3000(of)S
(controlling)462 3126 A
(process)294 3630 A
3966(*/)S
2700 V
(11640)210 648 A
(char)168 1110 A
(tty_openct;)462 1320 A
2370(/*)S
(count)210 2496 A
2748(of)S
(number)252 2874 A
3168(of)S
(opens)210 3294 A
3546(of)S
(this)168 3672 A
(tty)126 3882 A
4050(*/)S
2790 V
(11641)210 648 A
2880 V
(11642)210 648 A
1110(/*)S
(Information)462 1236 A
(about)210 1740 A
(incomplete)420 1992 A
(I/O)126 2454 A
(requests)336 2622 A
3000(is)S
(stored)252 3126 A
(here.)210 3420 A
3672(*/)S
2970 V
(11643)210 648 A
(char)168 1110 A
(tty_inrepcode;)588 1320 A
2370(/*)S
(reply)210 2496 A
(code,)210 2748 A
(TASK_REPLY)420 3000 A
3462(or)S
(REVIVE)252 3588 A
3882(*/)S
3060 V
(11644)210 648 A
(char)168 1110 A
(tty_incaller;)546 1320 A
2370(/*)S
(process)294 2496 A
(that)168 2832 A
(made)168 3042 A
(the)126 3252 A
(call)168 3420 A
((usually)336 3630 A
(FS))126 4008 A
4176(*/)S
3150 V
(11645)210 648 A
(char)168 1110 A
(tty_inproc;)462 1320 A
2370(/*)S
(process)294 2496 A
(that)168 2832 A
(wants)210 3042 A
3294(to)S
(read)168 3420 A
(from)168 3630 A
(tty)126 3840 A
4008(*/)S
3240 V
(11646)210 648 A
(vir_bytes)378 1110 A
(tty_in_vir;)462 1530 A
2370(/*)S
(virtual)294 2496 A
(address)294 2832 A
(where)210 3168 A
(data)168 3420 A
3630(is)S
3756(to)S
3882(go)S
4008(*/)S
3330 V
(11647)210 648 A
(int)126 1110 A
(tty_inleft;)462 1278 A
2370(/*)S
(how)126 2496 A
(many)168 2664 A
(chars)210 2874 A
(are)126 3126 A
(still)210 3294 A
(needed)252 3546 A
3840(*/)S
3420 V
(11648)210 648 A
(int)126 1110 A
(tty_incum;)420 1278 A
2370(/*)S
2496(#)S
(chars)210 2580 A
(input)210 2832 A
3084(so)S
(far)126 3210 A
3378(*/)S
3510 V
(11649)210 648 A
(char)168 1110 A
(tty_outrepcode;)630 1320 A
2370(/*)S
(reply)210 2496 A
(code,)210 2748 A
(TASK_REPLY)420 3000 A
3462(or)S
(REVIVE)252 3588 A
3882(*/)S
3600 V
(11650)210 648 A
(char)168 1110 A
(tty_outcaller;)588 1320 A
2370(/*)S
(process)294 2496 A
(that)168 2832 A
(made)168 3042 A
(the)126 3252 A
(call)168 3420 A
((usually)336 3630 A
(FS))126 4008 A
4176(*/)S
3690 V
(11651)210 648 A
(char)168 1110 A
(tty_outproc;)504 1320 A
2370(/*)S
(process)294 2496 A
(that)168 2832 A
(wants)210 3042 A
3294(to)S
(write)210 3420 A
3672(to)S
(tty)126 3798 A
3966(*/)S
3780 V
(11652)210 648 A
(vir_bytes)378 1110 A
(tty_out_vir;)504 1530 A
2370(/*)S
(virtual)294 2496 A
(address)294 2832 A
(where)210 3168 A
(data)168 3420 A
(comes)210 3630 A
(from)168 3882 A
4092(*/)S
3870 V
(11653)210 648 A
(int)126 1110 A
(tty_outleft;)504 1278 A
2370(/*)S
2496(#)S
(chars)210 2580 A
(yet)126 2832 A
3000(to)S
3126(be)S
(output)252 3252 A
3546(*/)S
3960 V
(11654)210 648 A
(int)126 1110 A
(tty_outcum;)462 1278 A
2370(/*)S
2496(#)S
(chars)210 2580 A
(output)252 2832 A
3126(so)S
(far)126 3252 A
3420(*/)S
4050 V
(11655)210 648 A
(char)168 1110 A
(tty_iocaller;)546 1320 A
2370(/*)S
(process)294 2496 A
(that)168 2832 A
(made)168 3042 A
(the)126 3252 A
(call)168 3420 A
((usually)336 3630 A
(FS))126 4008 A
4176(*/)S
4140 V
(11656)210 648 A
(char)168 1110 A
(tty_ioproc;)462 1320 A
2370(/*)S
(process)294 2496 A
(that)168 2832 A
(wants)210 3042 A
3294(to)S
3420(do)S
3546(an)S
(ioctl)210 3672 A
3924(*/)S
4230 V
(11657)210 648 A
(int)126 1110 A
(tty_ioreq;)420 1278 A
2370(/*)S
(ioctl)210 2496 A
(request)294 2748 A
(code)168 3084 A
3294(*/)S
4320 V
(11658)210 648 A
(vir_bytes)378 1110 A
(tty_iovir;)420 1530 A
2370(/*)S
(virtual)294 2496 A
(address)294 2832 A
3168(of)S
(ioctl)210 3294 A
(buffer)252 3546 A
3840(*/)S
4410 V
(11659)210 648 A
4500 V
(11660)210 648 A
1110(/*)S
(Miscellaneous.)588 1236 A
1866(*/)S
4590 V
(11661)210 648 A
(devfun_t)336 1110 A
(tty_ioctl;)420 1488 A
2370(/*)S
(set)126 2496 A
(line)168 2664 A
(speed,)252 2874 A
(etc.)168 3168 A
3378(at)S
(the)126 3504 A
(device)252 3672 A
(level)210 3966 A
4218(*/)S
4680 V
(11662)210 648 A
(devfun_t)336 1110 A
(tty_close;)420 1488 A
2370(/*)S
(tell)168 2496 A
(the)126 2706 A
(device)252 2874 A
(that)168 3168 A
(the)126 3378 A
(tty)126 3546 A
3714(is)S
(closed)252 3840 A
4134(*/)S
4770 V
(11663)210 648 A
(void)168 1110 A
(*tty_priv;)420 1320 A
2370(/*)S
(pointer)294 2496 A
2832(to)S
(per)126 2958 A
(device)252 3126 A
(private)294 3420 A
(data)168 3756 A
3966(*/)S
4860 V
(11664)210 648 A
(struct)252 1110 A
(termios)294 1404 A
(tty_termios;)504 1740 A
2370(/*)S
(terminal)336 2496 A
(attributes)420 2874 A
3336(*/)S
4950 V
(11665)210 648 A
(struct)252 1110 A
(winsize)294 1404 A
(tty_winsize;)504 1740 A
2370(/*)S
(window)252 2496 A
(size)168 2790 A
((#lines)294 3000 A
(and)126 3336 A
(#columns))378 3504 A
3924(*/)S
5040 V
(11666)210 648 A
5130 V
(11667)210 648 A
(u16_t)210 1110 A
(tty_inbuf[TTY_IN_BYTES];/*)1092 1362 A
(tty)126 2496 A
(input)210 2664 A
(buffer)252 2916 A
3210(*/)S
5220 V
(11668)210 648 A
1026(})S
(tty_t;)252 1110 A
5310 V
(11669)210 648 A
5400 V
(11670)210 648 A
(EXTERN)252 1026 A
(tty_t)210 1320 A
(tty_table[NR_CONS+NR_RS_LINES+NR_PTYS];)1638 1572 A
5490 V
(11671)210 648 A
5580 V
(11672)210 648 A
1026(/*)S
(Values)252 1152 A
(for)126 1446 A
(the)126 1614 A
(fields.)294 1782 A
2118(*/)S
5670 V
(11673)210 648 A
(#define)294 1026 A
(NOT_ESCAPED)462 1362 A
2160(0)S
2370(/*)S
(previous)336 2496 A
(character)378 2874 A
3294(is)S
(not)126 3420 A
(LNEXT)210 3588 A
((303V))168 3840 A
4050(*/)S
5760 V
(11674)210 648 A
(#define)294 1026 A
(ESCAPED)294 1362 A
2160(1)S
2370(/*)S
(previous)336 2496 A
(character)378 2874 A
(was)126 3294 A
(LNEXT)210 3462 A
((303V))168 3714 A
3924(*/)S
5850 V
(11675)210 648 A
(#define)294 1026 A
(RUNNING)294 1362 A
2160(0)S
2370(/*)S
2496(no)S
(STOP)168 2622 A
((303S))168 2832 A
(has)126 3042 A
(been)168 3210 A
(typed)210 3420 A
3672(to)S
(stop)168 3798 A
(output)252 4008 A
4302(*/)S
5940 V
(11676)210 648 A
(#define)294 1026 A
(STOPPED)294 1362 A
2160(1)S
2370(/*)S
(STOP)168 2496 A
((303S))168 2706 A
(has)126 2916 A
(been)168 3084 A
(typed)210 3294 A
3546(to)S
(stop)168 3672 A
(output)252 3882 A
4176(*/)S
6030 V
(11677)210 648 A
6120 V
(11678)210 648 A
1026(/*)S
(Fields)252 1152 A
(and)126 1446 A
(flags)210 1614 A
1866(on)S
(characters)420 1992 A
2454(in)S
(the)126 2580 A
(input)210 2748 A
(queue.)252 3000 A
3294(*/)S
6210 V
(11679)210 648 A
(#define)294 1026 A
(IN_CHAR)294 1362 A
(0x00FF)252 1950 A
2370(/*)S
(low)126 2496 A
2664(8)S
(bits)168 2748 A
(are)126 2958 A
(the)126 3126 A
(character)378 3294 A
(itself)252 3714 A
4008(*/)S
8418 V
EP
%%Page: 155 155
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2086(File:)S
(src/kernel/tty.h)670 2319 A
12 B
(155)180 4248 A
900 V
7 LST
(11680)210 648 A
(#define)294 1026 A
(IN_LEN)252 1362 A
(0x0F00)252 1950 A
2370(/*)S
(length)252 2496 A
2790(of)S
(char)168 2916 A
3126(if)S
3252(it)S
(has)126 3378 A
(been)168 3546 A
(echoed)252 3756 A
4050(*/)S
990 V
(11681)210 648 A
(#define)294 1026 A
(IN_LSHIFT)378 1362 A
2160(8)S
2370(/*)S
(length)252 2496 A
2790(=)S
2874((c)S
3000(&)S
(IN_LEN))294 3084 A
3420(>>)S
(IN_LSHIFT)378 3546 A
3966(*/)S
1080 V
(11682)210 648 A
(#define)294 1026 A
(IN_EOT)252 1362 A
(0x1000)252 1950 A
2370(/*)S
(char)168 2496 A
2706(is)S
2832(a)S
(line)168 2916 A
(break)210 3126 A
((303D,)168 3378 A
(LF))126 3588 A
3756(*/)S
1170 V
(11683)210 648 A
(#define)294 1026 A
(IN_EOF)252 1362 A
(0x2000)252 1950 A
2370(/*)S
(char)168 2496 A
2706(is)S
(EOF)126 2832 A
((303D),)210 3000 A
3252(do)S
(not)126 3378 A
(return)252 3546 A
3840(to)S
(user)168 3966 A
4176(*/)S
1260 V
(11684)210 648 A
(#define)294 1026 A
(IN_ESC)252 1362 A
(0x4000)252 1950 A
2370(/*)S
(escaped)294 2496 A
2832(by)S
(LNEXT)210 2958 A
((303V),)210 3210 A
3462(no)S
(interpretation)588 3588 A
4218(*/)S
1350 V
(11685)210 648 A
1440 V
(11686)210 648 A
1026(/*)S
(Times)210 1152 A
(and)126 1404 A
(timeouts.)378 1572 A
1992(*/)S
1530 V
(11687)210 648 A
(#define)294 1026 A
(TIME_NEVER)420 1362 A
(((clock_t))420 2034 A
2496(-1)S
2622(<)S
2706(0)S
2790(?)S
((clock_t))378 2874 A
(LONG_MAX)336 3294 A
3672(:)S
((clock_t))378 3756 A
(-1))126 4176 A
1620 V
(11688)210 648 A
(#define)294 1026 A
(force_timeout())630 1362 A
(((void))294 2034 A
((tty_timeout)504 2370 A
2916(=)S
(0)))126 3000 A
1710 V
(11689)210 648 A
1800 V
(11690)210 648 A
(EXTERN)252 1026 A
(tty_t)210 1320 A
(*tty_timelist;)588 1572 A
2370(/*)S
(list)168 2496 A
2706(of)S
(ttys)168 2832 A
(with)168 3042 A
(active)252 3252 A
(timers)252 3546 A
3840(*/)S
1890 V
(11691)210 648 A
1980 V
(11692)210 648 A
1026(/*)S
(Number)252 1152 A
1446(of)S
(elements)336 1572 A
(and)126 1950 A
(limit)210 2118 A
2370(of)S
2496(a)S
(buffer.)294 2580 A
2916(*/)S
2070 V
(11693)210 648 A
(#define)294 1026 A
(buflen(buf))462 1362 A
((sizeof(buf))504 2034 A
2580(/)S
(sizeof((buf)[0])))714 2664 A
2160 V
(11694)210 648 A
(#define)294 1026 A
(bufend(buf))462 1362 A
(((buf))252 2034 A
2328(+)S
(buflen(buf)))504 2412 A
2790 V
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
2880 V
(src/kernel/tty.c)672 2034 A
2970 V
(++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++)3528 648 A
3150 V
(11700)210 648 A
1026(/*)S
(This)168 1152 A
(file)168 1362 A
(contains)336 1572 A
(the)126 1950 A
(terminal)336 2118 A
(driver,)294 2496 A
(both)168 2832 A
(for)126 3042 A
(the)126 3210 A
(IBM)126 3378 A
(console)294 3546 A
(and)126 3882 A
(regular)294 4050 A
3240 V
(11701)210 648 A
1068(*)S
(ASCII)210 1152 A
(terminals.)420 1404 A
1908(It)S
(handles)294 2034 A
(only)168 2370 A
(the)126 2580 A
(device-independent)756 2748 A
(part)168 3546 A
3756(of)S
3882(a)S
(TTY,)168 3966 A
(the)126 4176 A
3330 V
(11702)210 648 A
1068(*)S
(device)252 1152 A
(dependent)378 1446 A
(parts)210 1866 A
(are)126 2118 A
2286(in)S
(console.c,)420 2412 A
(rs232.c,)336 2874 A
(etc.)168 3252 A
(This)168 3504 A
(file)168 3714 A
(contains)336 3924 A
3420 V
(11703)210 648 A
1068(*)S
(two)126 1152 A
(main)168 1320 A
(entry)210 1530 A
(points,)294 1782 A
(tty_task())420 2118 A
(and)126 2580 A
(tty_wakeup(),)546 2748 A
(and)126 3336 A
(several)294 3504 A
(minor)210 3840 A
(entry)210 4092 A
3510 V
(11704)210 648 A
1068(*)S
(points)252 1152 A
(for)126 1446 A
(use)126 1614 A
1782(by)S
(the)126 1908 A
(device-dependent)672 2076 A
(code.)210 2790 A
3600 V
(11705)210 648 A
1068(*)S
3690 V
(11706)210 648 A
1068(*)S
(The)126 1152 A
(device-independent)756 1320 A
(part)168 2118 A
(accepts)294 2328 A
("keyboard")420 2664 A
(input)210 3126 A
(from)168 3378 A
(the)126 3588 A
(device-)294 3756 A
3780 V
(11707)210 648 A
1068(*)S
(dependent)378 1152 A
(part,)210 1572 A
(performs)336 1824 A
(input)210 2202 A
(processing)420 2454 A
((special)336 2916 A
(key)126 3294 A
(interpretation),)672 3462 A
3870 V
(11708)210 648 A
1068(*)S
(and)126 1152 A
(sends)210 1320 A
(the)126 1572 A
(input)210 1740 A
1992(to)S
2118(a)S
(process)294 2202 A
(reading)294 2538 A
(from)168 2874 A
(the)126 3084 A
(TTY.)168 3252 A
(Output)252 3504 A
3798(to)S
3924(a)S
(TTY)126 4008 A
3960 V
(11709)210 648 A
1068(*)S
1152(is)S
(sent)168 1278 A
1488(to)S
(the)126 1614 A
(device-dependent)672 1782 A
(code)168 2496 A
(for)126 2706 A
(output)252 2874 A
(processing)420 3168 A
(and)126 3630 A
("screen")336 3798 A
4050 V
(11710)210 648 A
1068(*)S
(display.)336 1152 A
(Input)210 1572 A
(processing)420 1824 A
2286(is)S
(done)168 2412 A
2622(by)S
(the)126 2748 A
(device)252 2916 A
3210(by)S
(calling)294 3336 A
('in_process')504 3672 A
4140 V
(11711)210 648 A
1068(*)S
1152(on)S
(the)126 1278 A
(input)210 1446 A
(characters,)462 1698 A
(output)252 2202 A
(processing)420 2496 A
(may)126 2958 A
3126(be)S
(done)168 3252 A
3462(by)S
(the)126 3588 A
(device)252 3756 A
(itself)252 4050 A
4230 V
(11712)210 648 A
1068(*)S
1152(or)S
1278(by)S
(calling)294 1404 A
('out_process'.)588 1740 A
(The)126 2412 A
(TTY)126 2580 A
(takes)210 2748 A
(care)168 3000 A
3210(of)S
(input)210 3336 A
(queuing,)336 3588 A
(the)126 3966 A
4320 V
(11713)210 648 A
1068(*)S
(device)252 1152 A
(does)168 1446 A
(the)126 1656 A
(output)252 1824 A
(queuing.)336 2118 A
2538(If)S
2664(a)S
(device)252 2748 A
(receives)336 3042 A
3420(an)S
(external)336 3546 A
(signal,)294 3924 A
4410 V
(11714)210 648 A
1068(*)S
(like)168 1152 A
1362(an)S
(interrupt,)420 1488 A
(then)168 1950 A
2160(it)S
(causes)252 2286 A
(tty_wakeup())504 2580 A
3126(to)S
3252(be)S
(run)126 3378 A
3546(by)S
(the)126 3672 A
(CLOCK)210 3840 A
(task)168 4092 A
4500 V
(11715)210 648 A
1068(*)S
(to,)126 1152 A
(you)126 1320 A
(guessed)294 1488 A
(it,)126 1824 A
(wake)168 1992 A
2202(up)S
(the)126 2328 A
(TTY)126 2496 A
2664(to)S
(check)210 2790 A
3042(if)S
(input)210 3168 A
3420(or)S
(output)252 3546 A
(can)126 3840 A
4590 V
(11716)210 648 A
1068(*)S
(continue.)378 1152 A
4680 V
(11717)210 648 A
1068(*)S
4770 V
(11718)210 648 A
1068(*)S
(The)126 1152 A
(valid)210 1320 A
(messages)336 1572 A
(and)126 1950 A
(their)210 2118 A
(parameters)420 2370 A
(are:)168 2832 A
4860 V
(11719)210 648 A
1068(*)S
4950 V
(11720)210 648 A
1068(*)S
(HARD_INT:)378 1236 A
(output)252 1824 A
(has)126 2118 A
(been)168 2286 A
(completed)378 2496 A
2916(or)S
(input)210 3042 A
(has)126 3294 A
(arrived)294 3462 A
5040 V
(11721)210 648 A
1068(*)S
(DEV_READ:)378 1236 A
1824(a)S
(process)294 1908 A
(wants)210 2244 A
2496(to)S
(read)168 2622 A
(from)168 2832 A
3042(a)S
(terminal)336 3126 A
5130 V
(11722)210 648 A
1068(*)S
(DEV_WRITE:)420 1236 A
1824(a)S
(process)294 1908 A
(wants)210 2244 A
2496(to)S
(write)210 2622 A
2874(on)S
3000(a)S
(terminal)336 3084 A
5220 V
(11723)210 648 A
1068(*)S
(DEV_IOCTL:)420 1236 A
1824(a)S
(process)294 1908 A
(wants)210 2244 A
2496(to)S
(change)252 2622 A
2916(a)S
(terminal's)420 3000 A
(parameters)420 3462 A
5310 V
(11724)210 648 A
1068(*)S
(DEV_OPEN:)378 1236 A
1824(a)S
(tty)126 1908 A
(line)168 2076 A
(has)126 2286 A
(been)168 2454 A
(opened)252 2664 A
5400 V
(11725)210 648 A
1068(*)S
(DEV_CLOSE:)420 1236 A
1824(a)S
(tty)126 1908 A
(line)168 2076 A
(has)126 2286 A
(been)168 2454 A
(closed)252 2664 A
5490 V
(11726)210 648 A
1068(*)S
(CANCEL:)294 1236 A
(terminate)378 1824 A
2244(a)S
(previous)336 2328 A
(incomplete)420 2706 A
(system)252 3168 A
(call)168 3462 A
(immediately)462 3672 A
5580 V
(11727)210 648 A
1068(*)S
5670 V
(11728)210 648 A
1068(*)S
(m_type)252 1278 A
(TTY_LINE)336 1782 A
(PROC_NR)294 2244 A
(COUNT)210 2706 A
(TTY_SPEK)336 3042 A
(TTY_FLAGS)378 3462 A
(ADDRESS)294 3924 A
5760 V
(11729)210 648 A
1068(*)S
(---------------------------------------------------------------------------)3150 1152 A
5850 V
(11730)210 648 A
1068(*)S
1152(|)S
(HARD_INT)336 1236 A
1740(|)S
2160(|)S
2580(|)S
3000(|)S
3420(|)S
3840(|)S
4260(|)S
5940 V
(11731)210 648 A
1068(*)S
(|-------------+---------+---------+---------+---------+---------+---------|)3150 1152 A
6030 V
(11732)210 648 A
1068(*)S
1152(|)S
(DEV_READ)336 1236 A
(|minor)252 1740 A
(dev|)168 2034 A
(proc)168 2244 A
2454(nr)S
2580(|)S
(count)210 2706 A
3000(|)S
(O_NONBLOCK|)462 3420 A
(buf)126 3924 A
(ptr)126 4092 A
4260(|)S
6120 V
(11733)210 648 A
1068(*)S
(|-------------+---------+---------+---------+---------+---------+---------|)3150 1152 A
6210 V
(11734)210 648 A
1068(*)S
1152(|)S
(DEV_WRITE)378 1236 A
(|minor)252 1740 A
(dev|)168 2034 A
(proc)168 2244 A
2454(nr)S
2580(|)S
(count)210 2706 A
3000(|)S
3420(|)S
3840(|)S
(buf)126 3924 A
(ptr)126 4092 A
4260(|)S
8418 V
EP
%%Page: 156 156
BP
/slant 0 def
/height 0 def
630 V
12 B
(156)180 648 A
11 R
2089(File:)S
(src/kernel/tty.c)665 2322 A
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(11735)210 648 A
1068(*)S
(|-------------+---------+---------+---------+---------+---------+---------|)3150 1152 A
990 V
(11736)210 648 A
1068(*)S
1152(|)S
(DEV_IOCTL)378 1236 A
(|minor)252 1740 A
(dev|)168 2034 A
(proc)168 2244 A
2454(nr)S
(|func)210 2580 A
(code|erase)420 2832 A
(etc|)168 3294 A
(flags)210 3546 A
3840(|)S
4260(|)S
1080 V
(11737)210 648 A
1068(*)S
(|-------------+---------+---------+---------+---------+---------+---------|)3150 1152 A
1170 V
(11738)210 648 A
1068(*)S
1152(|)S
(DEV_OPEN)336 1236 A
(|minor)252 1740 A
(dev|)168 2034 A
(proc)168 2244 A
2454(nr)S
2580(|)S
(O_NOCTTY|)378 2664 A
3420(|)S
3840(|)S
4260(|)S
1260 V
(11739)210 648 A
1068(*)S
(|-------------+---------+---------+---------+---------+---------+---------|)3150 1152 A
1350 V
(11740)210 648 A
1068(*)S
1152(|)S
(DEV_CLOSE)378 1236 A
(|minor)252 1740 A
(dev|)168 2034 A
(proc)168 2244 A
2454(nr)S
2580(|)S
3000(|)S
3420(|)S
3840(|)S
4260(|)S
1440 V
(11741)210 648 A
1068(*)S
(|-------------+---------+---------+---------+---------+---------+---------|)3150 1152 A
1530 V
(11742)210 648 A
1068(*)S
1152(|)S
(CANCEL)252 1236 A
(|minor)252 1740 A
(dev|)168 2034 A
(proc)168 2244 A
2454(nr)S
2580(|)S
3000(|)S
3420(|)S
3840(|)S
4260(|)S
1620 V
(11743)210 648 A
1068(*)S
(---------------------------------------------------------------------------)3150 1152 A
1710 V
(11744)210 648 A
1068(*/)S
1800 V
(11745)210 648 A
1890 V
(11746)210 648 A
(#include)336 1026 A
("kernel.h")420 1404 A
1980 V
(11747)210 648 A
(#include)336 1026 A
(<termios.h>)462 1404 A
2070 V
(11748)210 648 A
(#include)336 1026 A
(<sys/ioctl.h>)546 1404 A
2160 V
(11749)210 648 A
(#include)336 1026 A
(<signal.h>)420 1404 A
2250 V
(11750)210 648 A
(#include)336 1026 A
(<minix/callnr.h>)672 1404 A
2340 V
(11751)210 648 A
(#include)336 1026 A
(<minix/com.h>)546 1404 A
2430 V
(11752)210 648 A
(#include)336 1026 A
(<minix/keymap.h>)672 1404 A
2520 V
(11753)210 648 A
(#include)336 1026 A
("tty.h")294 1404 A
2610 V
(11754)210 648 A
(#include)336 1026 A
("proc.h")336 1404 A
2700 V
(11755)210 648 A
2790 V
(11756)210 648 A
1026(/*)S
(Address)294 1152 A
1488(of)S
1614(a)S
(tty)126 1698 A
(structure.)420 1866 A
2328(*/)S
2880 V
(11757)210 648 A
(#define)294 1026 A
(tty_addr(line))588 1362 A
((&tty_table[line]))756 2034 A
2970 V
(11758)210 648 A
3060 V
(11759)210 648 A
1026(/*)S
(First)210 1152 A
(minor)210 1404 A
(numbers)294 1656 A
(for)126 1992 A
(the)126 2160 A
(various)294 2328 A
(classes)294 2664 A
3000(of)S
(TTY)126 3126 A
(devices.)336 3294 A
3672(*/)S
3150 V
(11760)210 648 A
(#define)294 1026 A
(CONS_MINOR)420 1362 A
2118(0)S
3240 V
(11761)210 648 A
(#define)294 1026 A
(LOG_MINOR)378 1362 A
2076(15)S
3330 V
(11762)210 648 A
(#define)294 1026 A
(RS232_MINOR)462 1362 A
2076(16)S
3420 V
(11763)210 648 A
(#define)294 1026 A
(TTYPX_MINOR)462 1362 A
(128)126 2034 A
3510 V
(11764)210 648 A
(#define)294 1026 A
(PTYPX_MINOR)462 1362 A
(192)126 2034 A
3600 V
(11765)210 648 A
3690 V
(11766)210 648 A
1026(/*)S
(Macros)252 1152 A
(for)126 1446 A
(magic)210 1614 A
(tty)126 1866 A
(types.)252 2034 A
2328(*/)S
3780 V
(11767)210 648 A
(#define)294 1026 A
(isconsole(tp))546 1362 A
(((tp))210 2034 A
2286(<)S
(tty_addr(NR_CONS)))756 2370 A
3870 V
(11768)210 648 A
3960 V
(11769)210 648 A
1026(/*)S
(Macros)252 1152 A
(for)126 1446 A
(magic)210 1614 A
(tty)126 1866 A
(structure)378 2034 A
(pointers.)378 2454 A
2874(*/)S
4050 V
(11770)210 648 A
(#define)294 1026 A
(FIRST_TTY)378 1362 A
(tty_addr(0))462 2034 A
4140 V
(11771)210 648 A
(#define)294 1026 A
(END_TTY)294 1362 A
(tty_addr(sizeof(tty_table))1092 2034 A
3168(/)S
(sizeof(tty_table[0])))882 3252 A
4230 V
(11772)210 648 A
4320 V
(11773)210 648 A
1026(/*)S
1152(A)S
(device)252 1236 A
(exists)252 1530 A
1824(if)S
1950(at)S
(least)210 2076 A
(its)126 2328 A
('devread')378 2496 A
(function)336 2916 A
3294(is)S
(defined.)336 3420 A
3798(*/)S
4410 V
(11774)210 648 A
(#define)294 1026 A
(tty_active(tp))588 1362 A
(((tp)->tty_devread)756 2034 A
2832(!=)S
(NULL))210 2958 A
4500 V
(11775)210 648 A
4590 V
(11776)210 648 A
1026(/*)S
(RS232)210 1152 A
(lines)210 1404 A
1656(or)S
(pseudo)252 1782 A
(terminals)378 2076 A
(can)126 2496 A
2664(be)S
(completely)420 2790 A
(configured)420 3252 A
(out.)168 3714 A
3924(*/)S
4680 V
(11777)210 648 A
(#if)126 1026 A
(NR_RS_LINES)462 1194 A
1698(==)S
1824(0)S
4770 V
(11778)210 648 A
(#define)294 1026 A
(rs_init(tp))462 1362 A
(((void))294 2034 A
2370(0))S
4860 V
(11779)210 648 A
(#endif)252 1026 A
4950 V
(11780)210 648 A
(#if)126 1026 A
(NR_PTYS)294 1194 A
1530(==)S
1656(0)S
5040 V
(11781)210 648 A
(#define)294 1026 A
(pty_init(tp))504 1362 A
(((void))294 2034 A
2370(0))S
5130 V
(11782)210 648 A
(#define)294 1026 A
(do_pty(tp,)420 1362 A
(mp))126 1824 A
(((void))294 2034 A
2370(0))S
5220 V
(11783)210 648 A
(#endif)252 1026 A
5310 V
(11784)210 648 A
5400 V
(11785)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(do_cancel,)420 2076 A
((tty_t)252 2538 A
(*tp,)168 2832 A
(message)294 3042 A
(*m_ptr))294 3378 A
4050();)S
5490 V
(11786)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(do_ioctl,)378 2076 A
((tty_t)252 2496 A
(*tp,)168 2790 A
(message)294 3000 A
(*m_ptr))294 3336 A
4050();)S
5580 V
(11787)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(do_open,)336 2076 A
((tty_t)252 2454 A
(*tp,)168 2748 A
(message)294 2958 A
(*m_ptr))294 3294 A
4050();)S
5670 V
(11788)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(do_close,)378 2076 A
((tty_t)252 2496 A
(*tp,)168 2790 A
(message)294 3000 A
(*m_ptr))294 3336 A
4050();)S
5760 V
(11789)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(do_read,)336 2076 A
((tty_t)252 2454 A
(*tp,)168 2748 A
(message)294 2958 A
(*m_ptr))294 3294 A
4050();)S
5850 V
(11790)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(do_write,)378 2076 A
((tty_t)252 2496 A
(*tp,)168 2790 A
(message)294 3000 A
(*m_ptr))294 3336 A
4050();)S
5940 V
(11791)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(in_transfer,)504 2076 A
((tty_t)252 2622 A
(*tp))168 2916 A
4050();)S
6030 V
(11792)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(int)126 1866 A
(echo,)210 2034 A
((tty_t)252 2286 A
(*tp,)168 2580 A
(int)126 2790 A
(ch))126 2958 A
4050();)S
6120 V
(11793)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(rawecho,)336 2076 A
((tty_t)252 2454 A
(*tp,)168 2748 A
(int)126 2958 A
(ch))126 3126 A
4050();)S
6210 V
(11794)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(int)126 1866 A
(back_over,)420 2034 A
((tty_t)252 2496 A
(*tp))168 2790 A
4050();)S
8418 V
EP
%%Page: 157 157
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2089(File:)S
(src/kernel/tty.c)665 2322 A
12 B
(157)180 4248 A
900 V
7 LST
(11795)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(reprint,)336 2076 A
((tty_t)252 2454 A
(*tp))168 2748 A
4050();)S
990 V
(11796)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(dev_ioctl,)420 2076 A
((tty_t)252 2538 A
(*tp))168 2832 A
4050();)S
1080 V
(11797)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(setattr,)336 2076 A
((tty_t)252 2454 A
(*tp))168 2748 A
4050();)S
1170 V
(11798)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(tty_icancel,)504 2076 A
((tty_t)252 2622 A
(*tp))168 2916 A
4050();)S
1260 V
(11799)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(tty_init,)378 2076 A
((tty_t)252 2496 A
(*tp))168 2790 A
4050();)S
1350 V
(11800)210 648 A
(FORWARD)294 1026 A
(_PROTOTYPE()462 1362 A
(void)168 1866 A
(settimer,)378 2076 A
((tty_t)252 2496 A
(*tp,)168 2790 A
(int)126 3000 A
(on))126 3168 A
4050();)S
1440 V
(11801)210 648 A
1530 V
(11802)210 648 A
1026(/*)S
(Default)294 1152 A
(attributes.)462 1488 A
1992(*/)S
1620 V
(11803)210 648 A
(PRIVATE)294 1026 A
(struct)252 1362 A
(termios)294 1656 A
(termios_defaults)672 1992 A
2706(=)S
2790({)S
1710 V
(11804)210 648 A
(TINPUT_DEF,)462 1110 A
(TOUTPUT_DEF,)504 1614 A
(TCTRL_DEF,)420 2160 A
(TLOCAL_DEF,)462 2622 A
(TSPEED_DEF,)462 3126 A
(TSPEED_DEF,)462 3630 A
1800 V
(11805)210 648 A
1110({)S
1890 V
(11806)210 648 A
(TEOF_DEF,)378 1362 A
(TEOL_DEF,)378 1782 A
(TERASE_DEF,)462 2202 A
(TINTR_DEF,)420 2706 A
(TKILL_DEF,)420 3168 A
(TMIN_DEF,)378 3630 A
1980 V
(11807)210 648 A
(TQUIT_DEF,)420 1362 A
(TTIME_DEF,)420 1824 A
(TSUSP_DEF,)420 2286 A
(TSTART_DEF,)462 2748 A
(TSTOP_DEF,)420 3252 A
2070 V
(11808)210 648 A
(TREPRINT_DEF,)546 1362 A
(TLNEXT_DEF,)462 1950 A
(TDISCARD_DEF,)546 2454 A
2160 V
(11809)210 648 A
1110(},)S
2250 V
(11810)210 648 A
1026(};)S
2340 V
(11811)210 648 A
(PRIVATE)294 1026 A
(struct)252 1362 A
(winsize)294 1656 A
(winsize_defaults;)714 1992 A
3042(/*)S
3168(=)S
(all)126 3252 A
(zeroes)252 3420 A
3714(*/)S
2430 V
(11812)210 648 A
2520 V
(11813)210 648 A
2610 V
(11814)210 648 A
(/*===========================================================================*)3276 1026 A
2700 V
(11815)210 648 A
1068(*)S
(tty_task)336 2370 A
4260(*)S
2790 V
(11816)210 648 A
(*===========================================================================*/)3276 1068 A
2880 V
(11817)210 648 A
(PUBLIC)252 1026 A
(void)168 1320 A
(tty_task())420 1530 A
2970 V
(11818)210 648 A
1026({)S
3060 V
(11819)210 648 A
1026(/*)S
(Main)168 1152 A
(routine)294 1362 A
1698(of)S
(the)126 1824 A
(terminal)336 1992 A
(task.)210 2370 A
2622(*/)S
3150 V
(11820)210 648 A
3240 V
(11821)210 648 A
(message)294 1110 A
(tty_mess;)378 1446 A
2370(/*)S
(buffer)252 2496 A
(for)126 2790 A
(all)126 2958 A
(incoming)336 3126 A
(messages)336 3504 A
3882(*/)S
3330 V
(11822)210 648 A
(register)336 1110 A
(tty_t)210 1488 A
(*tp;)168 1740 A
3420 V
(11823)210 648 A
(unsigned)336 1110 A
(line;)210 1488 A
3510 V
(11824)210 648 A
3600 V
(11825)210 648 A
1110(/*)S
(Initialize)420 1236 A
(the)126 1698 A
(terminal)336 1866 A
(lines.)252 2244 A
2538(*/)S
3690 V
(11826)210 648 A
(for)126 1110 A
((tp)126 1278 A
1446(=)S
(FIRST_TTY;)420 1530 A
1992(tp)S
2118(<)S
(END_TTY;)336 2202 A
(tp++))210 2580 A
(tty_init(tp);)546 2832 A
3780 V
(11827)210 648 A
3870 V
(11828)210 648 A
1110(/*)S
(Display)294 1236 A
(the)126 1572 A
(Minix)210 1740 A
(startup)294 1992 A
(banner.)294 2328 A
2664(*/)S
3960 V
(11829)210 648 A
(printf("Minix)546 1110 A
(%s.%s)210 1698 A
(1997)168 2412 A
(Prentice-Hall,)588 2622 A
(Inc.\n\n",)420 3252 A
4050 V
(11830)210 648 A
(OS_RELEASE,)462 3042 A
(OS_VERSION);)504 3546 A
4140 V
(11831)210 648 A
(printf("Executing)714 1110 A
1866(in)S
(32-bit)252 1992 A
(protected)378 2286 A
(mode\n\n");)462 2706 A
4230 V
(11832)210 648 A
4320 V
(11833)210 648 A
(while)210 1110 A
((TRUE))252 1362 A
1656({)S
4410 V
(11834)210 648 A
1362(/*)S
(Handle)252 1488 A
(any)126 1782 A
(events)252 1950 A
2244(on)S
(any)126 2370 A
2538(of)S
(the)126 2664 A
(ttys.)210 2832 A
3084(*/)S
4500 V
(11835)210 648 A
(for)126 1362 A
((tp)126 1530 A
1698(=)S
(FIRST_TTY;)420 1782 A
2244(tp)S
2370(<)S
(END_TTY;)336 2454 A
(tp++))210 2832 A
3084({)S
4590 V
(11836)210 648 A
1698(if)S
((tp->tty_events))672 1824 A
(handle_events(tp);)756 2538 A
4680 V
(11837)210 648 A
1362(})S
4770 V
(11838)210 648 A
4860 V
(11839)210 648 A
(receive(ANY,)504 1362 A
(&tty_mess);)462 1908 A
4950 V
(11840)210 648 A
5040 V
(11841)210 648 A
1362(/*)S
1488(A)S
(hardware)336 1572 A
(interrupt)378 1950 A
2370(is)S
2496(an)S
(invitation)420 2622 A
3084(to)S
(check)210 3210 A
(for)126 3462 A
(events.)294 3630 A
3966(*/)S
5130 V
(11842)210 648 A
1362(if)S
((tty_mess.m_type)672 1488 A
2202(==)S
(HARD_INT))378 2328 A
(continue;)378 2748 A
5220 V
(11843)210 648 A
5310 V
(11844)210 648 A
1362(/*)S
(Check)210 1488 A
(the)126 1740 A
(minor)210 1908 A
(device)252 2160 A
(number.)294 2454 A
2790(*/)S
5400 V
(11845)210 648 A
(line)168 1362 A
1572(=)S
(tty_mess.TTY_LINE;)756 1656 A
5490 V
(11846)210 648 A
1362(if)S
(((line)252 1488 A
1782(-)S
(CONS_MINOR))462 1866 A
2370(<)S
(NR_CONS))336 2454 A
2832({)S
5580 V
(11847)210 648 A
1698(tp)S
1824(=)S
(tty_addr(line)546 1908 A
2496(-)S
(CONS_MINOR);)504 2580 A
5670 V
(11848)210 648 A
1362(})S
(else)168 1446 A
5760 V
(11849)210 648 A
1362(if)S
((line)210 1488 A
1740(==)S
(LOG_MINOR))420 1866 A
2328({)S
5850 V
(11850)210 648 A
1698(tp)S
1824(=)S
(tty_addr(0);)504 1908 A
5940 V
(11851)210 648 A
1362(})S
(else)168 1446 A
6030 V
(11852)210 648 A
1362(if)S
(((line)252 1488 A
1782(-)S
(RS232_MINOR))504 1866 A
2412(<)S
(NR_RS_LINES))504 2496 A
3042({)S
6120 V
(11853)210 648 A
1698(tp)S
1824(=)S
(tty_addr(line)546 1908 A
2496(-)S
(RS232_MINOR)462 2580 A
3084(+)S
(NR_CONS);)378 3168 A
6210 V
(11854)210 648 A
1362(})S
(else)168 1446 A
8418 V
EP
%%Page: 158 158
BP
/slant 0 def
/height 0 def
630 V
12 B
(158)180 648 A
11 R
2089(File:)S
(src/kernel/tty.c)665 2322 A
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(11855)210 648 A
1362(if)S
(((line)252 1488 A
1782(-)S
(TTYPX_MINOR))504 1866 A
2412(<)S
(NR_PTYS))336 2496 A
2874({)S
990 V
(11856)210 648 A
1698(tp)S
1824(=)S
(tty_addr(line)546 1908 A
2496(-)S
(TTYPX_MINOR)462 2580 A
3084(+)S
(NR_CONS)294 3168 A
3504(+)S
(NR_RS_LINES);)546 3588 A
1080 V
(11857)210 648 A
1362(})S
(else)168 1446 A
1170 V
(11858)210 648 A
1362(if)S
(((line)252 1488 A
1782(-)S
(PTYPX_MINOR))504 1866 A
2412(<)S
(NR_PTYS))336 2496 A
2874({)S
1260 V
(11859)210 648 A
1698(tp)S
1824(=)S
(tty_addr(line)546 1908 A
2496(-)S
(PTYPX_MINOR)462 2580 A
3084(+)S
(NR_CONS)294 3168 A
3504(+)S
(NR_RS_LINES);)546 3588 A
1350 V
(11860)210 648 A
(do_pty(tp,)420 1698 A
(&tty_mess);)462 2160 A
1440 V
(11861)210 648 A
(continue;)378 1698 A
3042(/*)S
(this)168 3168 A
3378(is)S
3504(a)S
(pty,)168 3588 A
(not)126 3798 A
3966(a)S
(tty)126 4050 A
4218(*/)S
1530 V
(11862)210 648 A
1362(})S
(else)168 1446 A
1656({)S
1620 V
(11863)210 648 A
1698(tp)S
1824(=)S
(NULL;)210 1908 A
1710 V
(11864)210 648 A
1362(})S
1800 V
(11865)210 648 A
1890 V
(11866)210 648 A
1362(/*)S
1488(If)S
(the)126 1614 A
(device)252 1782 A
(doesn't)294 2076 A
(exist)210 2412 A
2664(or)S
2790(is)S
(not)126 2916 A
(configured)420 3084 A
(return)252 3546 A
(ENXIO.)252 3840 A
4134(*/)S
1980 V
(11867)210 648 A
1362(if)S
((tp)126 1488 A
1656(==)S
(NULL)168 1782 A
1992(||)S
(!tty_active(tp)))672 2118 A
2832({)S
2070 V
(11868)210 648 A
(tty_reply(TASK_REPLY,)882 1698 A
(tty_mess.m_source,)756 2622 A
2160 V
(11869)210 648 A
(tty_mess.PROC_NR,)714 3042 A
(ENXIO);)294 3798 A
2250 V
(11870)210 648 A
(continue;)378 1698 A
2340 V
(11871)210 648 A
1362(})S
2430 V
(11872)210 648 A
2520 V
(11873)210 648 A
1362(/*)S
(Execute)294 1488 A
(the)126 1824 A
(requested)378 1992 A
(function.)378 2412 A
2832(*/)S
2610 V
(11874)210 648 A
(switch)252 1362 A
((tty_mess.m_type))714 1656 A
2412({)S
2700 V
(11875)210 648 A
(case)168 1530 A
(DEV_READ:)378 1740 A
(do_read(tp,)462 2370 A
(&tty_mess);)462 2874 A
(break;)252 3714 A
2790 V
(11876)210 648 A
(case)168 1530 A
(DEV_WRITE:)420 1740 A
(do_write(tp,)504 2370 A
(&tty_mess);)462 2916 A
(break;)252 3714 A
2880 V
(11877)210 648 A
(case)168 1530 A
(DEV_IOCTL:)420 1740 A
(do_ioctl(tp,)504 2370 A
(&tty_mess);)462 2916 A
(break;)252 3714 A
2970 V
(11878)210 648 A
(case)168 1530 A
(DEV_OPEN:)378 1740 A
(do_open(tp,)462 2370 A
(&tty_mess);)462 2874 A
(break;)252 3714 A
3060 V
(11879)210 648 A
(case)168 1530 A
(DEV_CLOSE:)420 1740 A
(do_close(tp,)504 2370 A
(&tty_mess);)462 2916 A
(break;)252 3714 A
3150 V
(11880)210 648 A
(case)168 1530 A
(CANCEL:)294 1740 A
(do_cancel(tp,)546 2370 A
(&tty_mess);)462 2958 A
(break;)252 3714 A
3240 V
(11881)210 648 A
(default:)336 1530 A
(tty_reply(TASK_REPLY,)882 2370 A
(tty_mess.m_source,)756 3294 A
3330 V
(11882)210 648 A
(tty_mess.PROC_NR,)714 3042 A
(EINVAL);)336 3798 A
3420 V
(11883)210 648 A
1362(})S
3510 V
(11884)210 648 A
1110(})S
3600 V
(11885)210 648 A
1026(})S
3870 V
(11888)210 648 A
(/*===========================================================================*)3276 1026 A
3960 V
(11889)210 648 A
1068(*)S
(do_read)294 2370 A
4260(*)S
4050 V
(11890)210 648 A
(*===========================================================================*/)3276 1068 A
4140 V
(11891)210 648 A
(PRIVATE)294 1026 A
(void)168 1362 A
(do_read(tp,)462 1572 A
(m_ptr))252 2076 A
4230 V
(11892)210 648 A
(register)336 1026 A
(tty_t)210 1404 A
(*tp;)168 1656 A
2370(/*)S
(pointer)294 2496 A
2832(to)S
(tty)126 2958 A
(struct)252 3126 A
3420(*/)S
4320 V
(11893)210 648 A
(message)294 1026 A
(*m_ptr;)294 1362 A
2370(/*)S
(pointer)294 2496 A
2832(to)S
(message)294 2958 A
(sent)168 3294 A
3504(to)S
(the)126 3630 A
(task)168 3798 A
4008(*/)S
4410 V
(11894)210 648 A
1026({)S
4500 V
(11895)210 648 A
1026(/*)S
1152(A)S
(process)294 1236 A
(wants)210 1572 A
1824(to)S
(read)168 1950 A
(from)168 2160 A
2370(a)S
(terminal.)378 2454 A
2874(*/)S
4590 V
(11896)210 648 A
(int)126 1110 A
1278(r;)S
4680 V
(11897)210 648 A
4770 V
(11898)210 648 A
1110(/*)S
(Check)210 1236 A
1488(if)S
(there)210 1614 A
1866(is)S
(already)294 1992 A
2328(a)S
(process)294 2412 A
(hanging)294 2748 A
3084(in)S
3210(a)S
(read,)210 3294 A
(check)210 3546 A
3798(if)S
(the)126 3924 A
4860 V
(11899)210 648 A
1152(*)S
(parameters)420 1236 A
(are)126 1698 A
(correct,)336 1866 A
2244(do)S
(I/O.)168 2370 A
4950 V
(11900)210 648 A
1152(*/)S
5040 V
(11901)210 648 A
1110(if)S
((tp->tty_inleft)630 1236 A
1908(>)S
1992(0))S
2118({)S
5130 V
(11902)210 648 A
1362(r)S
1446(=)S
(EIO;)168 1530 A
5220 V
(11903)210 648 A
1110(})S
(else)168 1194 A
5310 V
(11904)210 648 A
1110(if)S
((m_ptr->COUNT)546 1236 A
1824(<=)S
1950(0))S
2076({)S
5400 V
(11905)210 648 A
1362(r)S
1446(=)S
(EINVAL;)294 1530 A
5490 V
(11906)210 648 A
1110(})S
(else)168 1194 A
5580 V
(11907)210 648 A
1110(if)S
((numap(m_ptr->PROC_NR,)924 1236 A
((vir_bytes))462 2202 A
(m_ptr->ADDRESS,)630 2706 A
(m_ptr->COUNT))546 3378 A
3966(==)S
4092(0))S
4218({)S
5670 V
(11908)210 648 A
1362(r)S
1446(=)S
(EFAULT;)294 1530 A
5760 V
(11909)210 648 A
1110(})S
(else)168 1194 A
1404({)S
5850 V
(11910)210 648 A
1362(/*)S
(Copy)168 1488 A
(information)462 1698 A
(from)168 2202 A
(the)126 2412 A
(message)294 2580 A
2916(to)S
(the)126 3042 A
(tty)126 3210 A
(struct.)294 3378 A
3714(*/)S
5940 V
(11911)210 648 A
(tp->tty_inrepcode)714 1362 A
2118(=)S
(TASK_REPLY;)462 2202 A
6030 V
(11912)210 648 A
(tp->tty_incaller)672 1362 A
2076(=)S
(m_ptr->m_source;)672 2160 A
6120 V
(11913)210 648 A
(tp->tty_inproc)588 1362 A
1992(=)S
(m_ptr->PROC_NR;)630 2076 A
6210 V
(11914)210 648 A
(tp->tty_in_vir)588 1362 A
1992(=)S
((vir_bytes))462 2076 A
(m_ptr->ADDRESS;)630 2580 A
8418 V
EP
%%Page: 159 159
BP
/slant 0 def
/height 0 def
630 V
10 R
648(MINIX)S
976(SOURCE)S
1399(CODE)S
11 R
2089(File:)S
(src/kernel/tty.c)665 2322 A
12 B
(159)180 4248 A
900 V
7 LST
(11915)210 648 A
(tp->tty_inleft)588 1362 A
1992(=)S
(m_ptr->COUNT;)546 2076 A
990 V
(11916)210 648 A
1080 V
(11917)210 648 A
1362(if)S
((!(tp->tty_termios.c_lflag)1092 1488 A
2622(&)S
(ICANON))294 2706 A
1170 V
(11918)210 648 A
2706(&&)S
(tp->tty_termios.c_cc[VTIME])1134 2832 A
4008(>)S
4092(0))S
4218({)S
1260 V
(11919)210 648 A
1698(if)S
((tp->tty_termios.c_cc[VMIN])1134 1824 A
3000(==)S
3126(0))S
3252({)S
1350 V
(11920)210 648 A
2034(/*)S
(MIN)126 2160 A
2328(&)S
(TIME)168 2412 A
(specify)294 2622 A
2958(a)S
(read)168 3042 A
(timer)210 3252 A
(that)168 3504 A
(finishes)336 3714 A
(the)126 4092 A
1440 V
(11921)210 648 A
2076(*)S
(read)168 2160 A
2370(in)S
(TIME/10)294 2496 A
(seconds)294 2832 A
3168(if)S
3294(no)S
(bytes)210 3420 A
(are)126 3672 A
(available.)420 3840 A
1530 V
(11922)210 648 A
2076(*/)S
1620 V
(11923)210 648 A
(lock();)294 2034 A
1710 V
(11924)210 648 A
(settimer(tp,)504 2034 A
(TRUE);)252 2580 A
1800 V
(11925)210 648 A
(tp->tty_min)462 2034 A
2538(=)S
2622(1;)S
1890 V
(11926)210 648 A
(unlock();)378 2034 A
1980 V
(11927)210 648 A
1698(})S
(else)168 1782 A
1992({)S
2070 V
(11928)210 648 A
2034(/*)S
(MIN)126 2160 A
2328(&)S
(TIME)168 2412 A
(specify)294 2622 A
2958(an)S
(inter-byte)420 3084 A
(timer)210 3546 A
(that)168 3798 A
(may)126 4008 A
2160 V
(11929)210 648 A
2076(*)S
(have)168 2160 A
2370(to)S
2496(be)S
(cancelled)378 2622 A
3042(if)S
(there)210 3168 A
(are)126 3420 A
3588(no)S
(bytes)210 3714 A
(yet.)168 3966 A
2250 V
(11930)210 648 A
2076(*/)S
2340 V
(11931)210 648 A
2034(if)S
((tp->tty_eotct)588 2160 A
2790(==)S
2916(0))S
3042({)S
2430 V
(11932)210 648 A
(lock();)294 2370 A
2520 V
(11933)210 648 A
(settimer(tp,)504 2370 A
(FALSE);)294 2916 A
2610 V
(11934)210 648 A
(unlock();)378 2370 A
2700 V
(11935)210 648 A
(tp->tty_min)462 2370 A
2874(=)S
(tp->tty_termios.c_cc[VMIN];)1134 2958 A
2790 V
(11936)210 648 A
2034(})S
2880 V
(11937)210 648 A
1698(})S
2970 V
(11938)210 648 A
1362(})S
3060 V
(11939)210 648 A
3150 V
(11940)210 648 A
1362(/*)S
(Anything)336 1488 A
(waiting)294 1866 A
2202(in)S
(the)126 2328 A
(input)210 2496 A
(buffer?)294 2748 A
(Clear)210 3084 A
3336(it)S
(out...)252 3462 A
3756(*/)S
3240 V
(11941)210 648 A
(in_transfer(tp);)672 1362 A
3330 V
(11942)210 648 A
1362(/*)S
(...then)294 1488 A
1824(go)S
(back)168 1950 A
(for)126 2160 A
(more)168 2328 A
2538(*/)S
3420 V
(11943)210 648 A
(handle_events(tp);)756 1362 A
3510 V
(11944)210 648 A
1362(if)S
((tp->tty_inleft)630 1488 A
2160(==)S
2286(0))S
(return;)294 2412 A
3378(/*)S
(already)294 3504 A
(done)168 3840 A
4050(*/)S
3600 V
(11945)210 648 A
3690 V
(11946)210 648 A
1362(/*)S
(There)210 1488 A
(were)168 1740 A
1950(no)S
(bytes)210 2076 A
2328(in)S
(the)126 2454 A
(input)210 2622 A
(queue)210 2874 A
(available,)420 3126 A
3588(so)S
(either)252 3714 A
(suspend)294 4008 A
3780 V
(11947)210 648 A
1404(*)S
(the)126 1488 A
(caller)252 1656 A
1950(or)S
(break)210 2076 A
(off)126 2328 A
(the)126 2496 A
(read)168 2664 A
2874(if)S
(nonblocking.)504 3000 A
3870 V
(11948)210 648 A
1404(*/)S
3960 V
(11949)210 648 A
1362(if)S
((m_ptr->TTY_FLAGS)714 1488 A
2244(&)S
(O_NONBLOCK))462 2328 A
2832({)S
4050 V
(11950)210 648 A
1698(r)S
1782(=)S
(EAGAIN;)294 1866 A
3378(/*)S
(cancel)252 3504 A
(the)126 3798 A
(read)168 3966 A
4176(*/)S
4140 V
(11951)210 648 A
(tp->tty_inleft)588 1698 A
2328(=)S
(tp->tty_incum)546 2412 A
3000(=)S
3084(0;)S
4230 V
(11952)210 648 A
1362(})S
(else)168 1446 A
1656({)S
4320 V
(11953)210 648 A
1698(r)S
1782(=)S
(SUSPEND;)336 1866 A
3378(/*)S
(suspend)294 3504 A
(the)126 3840 A
(caller)252 4008 A
4302(*/)S
4410 V
(11954)210 648 A
(tp->tty_inrepcode)714 1698 A
2454(=)S
(REVIVE;)294 2538 A
4500 V
(11955)210 648 A
1362(})S
4590 V
(11956)210 648 A
1110(})S
4680 V
(11957)210 648 A
(tty_reply(TASK_REPLY,)882 1110 A
(m_ptr->m_source,)672 2034 A
(m_ptr->PROC_NR,)630 2748 A
(r);)126 3420 A
4770 V
(11958)210 648 A
1026(})S
5040 V
(11961)210 648 A
(/*===========================================================================*)3276 1026 A
5130 V
(11962)210 648 A
1068(*)S
(do_write)336 2370 A
4260(*)S
5220 V
(11963)210 648 A
(*===========================================================================*/)3276 1068 A
5310 V
(11964)210 648 A
(PRIVATE)294 1026 A
(void)168 1362 A
(do_write(tp,)504 1572 A
(m_ptr))252 2118 A
5400 V
(11965)210 648 A
(register)336 1026 A
(tty_t)210 1404 A
(*tp;)168 1656 A
5490 V
(11966)210 648 A
(register)336 1026 A
(message)294 1404 A
(*m_ptr;)294 1740 A
2370(/*)S
(pointer)294 2496 A
2832(to)S
(message)294 2958 A
(sent)168 3294 A
3504(to)S
(the)126 3630 A
(task)168 3798 A
4008(*/)S
5580 V
(11967)210 648 A
1026({)S
5670 V
(11968)210 648 A
1026(/*)S
1152(A)S
(process)294 1236 A
(wants)210 1572 A
1824(to)S
(write)210 1950 A
2202(on)S
2328(a)S
(terminal.)378 2412 A
2832(*/)S
5760 V
(11969)210 648 A
(int)126 1110 A
1278(r;)S
5850 V
(11970)210 648 A
5940 V
(11971)210 648 A
1110(/*)S
(Check)210 1236 A
1488(if)S
(there)210 1614 A
1866(is)S
(already)294 1992 A
2328(a)S
(process)294 2412 A
(hanging)294 2748 A
3084(in)S
3210(a)S
(write,)252 3294 A
(check)210 3588 A
3840(if)S
(the)126 3966 A
6030 V
(11972)210 648 A
1152(*)S
(parameters)420 1236 A
(are)126 1698 A
(correct,)336 1866 A
2244(do)S
(I/O.)168 2370 A
6120 V
(11973)210 648 A
1152(*/)S
6210 V
(11974)210 648 A
1110(if)S
((tp->tty_outleft)672 1236 A
1950(>)S
2034(0))S
2160({)S
8418 V
EP
%%Page: 160 160
BP
/slant 0 def
/height 0 def
630 V
12 B
(160)180 648 A
11 R
2089(File:)S
(src/kernel/tty.c)665 2322 A
10 R
3402(MINIX)S
3730(SOURCE)S
4153(CODE)S
900 V
7 LST
(11975)210 648 A
1362(r)S
1446(=)S
(EIO;)168 1530 A
990 V
(11976)210 648 A
1110(})S
(else)168 1194 A
1080 V
(11977)210 648 A
1110(if)S
((m_ptr->COUNT)546 1236 A
1824(<=)S
1950(0))S
2076({)S
1170 V
(11978)210 648 A
1362(r)S
1446(=)S
(EINVAL;)294 1530 A
1260 V
(11979)210 648 A
1110(})S
(else)168 1194 A
1350 V
(11980)210 648 A
1110(if)S
((numap(m_ptr->PROC_NR,)924 1236 A
((vir_bytes))462 2202 A
(m_ptr->ADDRESS,)630 2706 A
(m_ptr->COUNT))546 3378 A
3966(==)S
4092(0))S
4218({)S
1440 V
(11981)210 648 A
1362(r)S
1446(=)S
(EFAULT;)294 1530 A
1530 V
(11982)210 648 A
1110(})S
(else)168 1194 A
1404({)S
1620 V
(11983)210 648 A
1362(/*)S
(Copy)168 1488 A
(message)294 1698 A
(parameters)420 2034 A
2496(to)S
(the)126 2622 A
(tty)126 2790 A
(structure.)420 2958 A
3420(*/)S
1710 V
(11984)210 648 A
(tp->tty_outrepcode)756 1362 A
2160(=)S
(TASK_REPLY;)462 2244 A
1800 V
(11985)210 648 A
(tp->tty_outcaller)714 1362 A
2118(=)S
(m_ptr->m_source;)672 2202 A
1890 V
(11986)210 648 A
(tp->tty_outproc)630 1362 A
2034(=)S
(m_ptr->PROC_NR;)630 2118 A
1980 V
(11987)210 648 A
(tp->tty_out_vir)630 1362 A
2034(=)S
((vir_bytes))462 2118 A
(m_ptr->ADDRESS;)630 2622 A
2070 V
(11988)210 648 A
(tp->tty_outleft)630 1362 A
2034(=)S
(m_ptr->COUNT;)546 2118 A
2160 V
(11989)210 648 A
2250 V
(11990)210 648 A
1362(/*)S
(Try)126 1488 A
1656(to)S
(write.)252 1782 A
2076(*/)S
2340 V
(11991)210 648 A
(handle_events(tp);)756 1362 A
2430 V
(11992)210 648 A
1362(if)S
((tp->tty_outleft)672 1488 A
2202(==)S
2328(0))S
(return;)294 2454 A
3378(/*)S