siginfo.h
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上传日期:2009-04-28
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文件大小:9k
- /* siginfo_t, sigevent and constants. Linux version.
- Copyright (C) 1997-2002, 2003 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
- #if !defined _SIGNAL_H && !defined __need_siginfo_t
- && !defined __need_sigevent_t
- # error "Never include this file directly. Use <signal.h> instead"
- #endif
- #include <bits/wordsize.h>
- #if (!defined __have_sigval_t
- && (defined _SIGNAL_H || defined __need_siginfo_t
- || defined __need_sigevent_t))
- # define __have_sigval_t 1
- /* Type for data associated with a signal. */
- typedef union sigval
- {
- int sival_int;
- void *sival_ptr;
- } sigval_t;
- #endif
- #if (!defined __have_siginfo_t
- && (defined _SIGNAL_H || defined __need_siginfo_t))
- # define __have_siginfo_t 1
- # define __SI_MAX_SIZE 128
- # if __WORDSIZE == 64
- # define __SI_PAD_SIZE ((__SI_MAX_SIZE / sizeof (int)) - 4)
- # else
- # define __SI_PAD_SIZE ((__SI_MAX_SIZE / sizeof (int)) - 3)
- # endif
- typedef struct siginfo
- {
- int si_signo; /* Signal number. */
- int si_errno; /* If non-zero, an errno value associated with
- this signal, as defined in <errno.h>. */
- int si_code; /* Signal code. */
- union
- {
- int _pad[__SI_PAD_SIZE];
- /* kill(). */
- struct
- {
- __pid_t si_pid; /* Sending process ID. */
- __uid_t si_uid; /* Real user ID of sending process. */
- } _kill;
- /* POSIX.1b timers. */
- struct
- {
- int si_tid; /* Timer ID. */
- int si_overrun; /* Overrun count. */
- sigval_t si_sigval; /* Signal value. */
- } _timer;
- /* POSIX.1b signals. */
- struct
- {
- __pid_t si_pid; /* Sending process ID. */
- __uid_t si_uid; /* Real user ID of sending process. */
- sigval_t si_sigval; /* Signal value. */
- } _rt;
- /* SIGCHLD. */
- struct
- {
- __pid_t si_pid; /* Which child. */
- __uid_t si_uid; /* Real user ID of sending process. */
- int si_status; /* Exit value or signal. */
- __clock_t si_utime;
- __clock_t si_stime;
- } _sigchld;
- /* SIGILL, SIGFPE, SIGSEGV, SIGBUS. */
- struct
- {
- void *si_addr; /* Faulting insn/memory ref. */
- } _sigfault;
- /* SIGPOLL. */
- struct
- {
- long int si_band; /* Band event for SIGPOLL. */
- int si_fd;
- } _sigpoll;
- } _sifields;
- } siginfo_t;
- /* X/Open requires some more fields with fixed names. */
- # define si_pid _sifields._kill.si_pid
- # define si_uid _sifields._kill.si_uid
- # define si_timerid _sifields._timer.si_tid
- # define si_overrun _sifields._timer.si_overrun
- # define si_status _sifields._sigchld.si_status
- # define si_utime _sifields._sigchld.si_utime
- # define si_stime _sifields._sigchld.si_stime
- # define si_value _sifields._rt.si_sigval
- # define si_int _sifields._rt.si_sigval.sival_int
- # define si_ptr _sifields._rt.si_sigval.sival_ptr
- # define si_addr _sifields._sigfault.si_addr
- # define si_band _sifields._sigpoll.si_band
- # define si_fd _sifields._sigpoll.si_fd
- /* Values for `si_code'. Positive values are reserved for kernel-generated
- signals. */
- enum
- {
- SI_ASYNCNL = -60, /* Sent by asynch name lookup completion. */
- # define SI_ASYNCNL SI_ASYNCNL
- SI_TKILL = -6, /* Sent by tkill. */
- # define SI_TKILL SI_TKILL
- SI_SIGIO, /* Sent by queued SIGIO. */
- # define SI_SIGIO SI_SIGIO
- SI_ASYNCIO, /* Sent by AIO completion. */
- # define SI_ASYNCIO SI_ASYNCIO
- SI_MESGQ, /* Sent by real time mesq state change. */
- # define SI_MESGQ SI_MESGQ
- SI_TIMER, /* Sent by timer expiration. */
- # define SI_TIMER SI_TIMER
- SI_QUEUE, /* Sent by sigqueue. */
- # define SI_QUEUE SI_QUEUE
- SI_USER, /* Sent by kill, sigsend, raise. */
- # define SI_USER SI_USER
- SI_KERNEL = 0x80 /* Send by kernel. */
- #define SI_KERNEL SI_KERNEL
- };
- /* `si_code' values for SIGILL signal. */
- enum
- {
- ILL_ILLOPC = 1, /* Illegal opcode. */
- # define ILL_ILLOPC ILL_ILLOPC
- ILL_ILLOPN, /* Illegal operand. */
- # define ILL_ILLOPN ILL_ILLOPN
- ILL_ILLADR, /* Illegal addressing mode. */
- # define ILL_ILLADR ILL_ILLADR
- ILL_ILLTRP, /* Illegal trap. */
- # define ILL_ILLTRP ILL_ILLTRP
- ILL_PRVOPC, /* Privileged opcode. */
- # define ILL_PRVOPC ILL_PRVOPC
- ILL_PRVREG, /* Privileged register. */
- # define ILL_PRVREG ILL_PRVREG
- ILL_COPROC, /* Coprocessor error. */
- # define ILL_COPROC ILL_COPROC
- ILL_BADSTK /* Internal stack error. */
- # define ILL_BADSTK ILL_BADSTK
- };
- /* `si_code' values for SIGFPE signal. */
- enum
- {
- FPE_INTDIV = 1, /* Integer divide by zero. */
- # define FPE_INTDIV FPE_INTDIV
- FPE_INTOVF, /* Integer overflow. */
- # define FPE_INTOVF FPE_INTOVF
- FPE_FLTDIV, /* Floating point divide by zero. */
- # define FPE_FLTDIV FPE_FLTDIV
- FPE_FLTOVF, /* Floating point overflow. */
- # define FPE_FLTOVF FPE_FLTOVF
- FPE_FLTUND, /* Floating point underflow. */
- # define FPE_FLTUND FPE_FLTUND
- FPE_FLTRES, /* Floating point inexact result. */
- # define FPE_FLTRES FPE_FLTRES
- FPE_FLTINV, /* Floating point invalid operation. */
- # define FPE_FLTINV FPE_FLTINV
- FPE_FLTSUB /* Subscript out of range. */
- # define FPE_FLTSUB FPE_FLTSUB
- };
- /* `si_code' values for SIGSEGV signal. */
- enum
- {
- SEGV_MAPERR = 1, /* Address not mapped to object. */
- # define SEGV_MAPERR SEGV_MAPERR
- SEGV_ACCERR /* Invalid permissions for mapped object. */
- # define SEGV_ACCERR SEGV_ACCERR
- };
- /* `si_code' values for SIGBUS signal. */
- enum
- {
- BUS_ADRALN = 1, /* Invalid address alignment. */
- # define BUS_ADRALN BUS_ADRALN
- BUS_ADRERR, /* Non-existant physical address. */
- # define BUS_ADRERR BUS_ADRERR
- BUS_OBJERR /* Object specific hardware error. */
- # define BUS_OBJERR BUS_OBJERR
- };
- /* `si_code' values for SIGTRAP signal. */
- enum
- {
- TRAP_BRKPT = 1, /* Process breakpoint. */
- # define TRAP_BRKPT TRAP_BRKPT
- TRAP_TRACE /* Process trace trap. */
- # define TRAP_TRACE TRAP_TRACE
- };
- /* `si_code' values for SIGCHLD signal. */
- enum
- {
- CLD_EXITED = 1, /* Child has exited. */
- # define CLD_EXITED CLD_EXITED
- CLD_KILLED, /* Child was killed. */
- # define CLD_KILLED CLD_KILLED
- CLD_DUMPED, /* Child terminated abnormally. */
- # define CLD_DUMPED CLD_DUMPED
- CLD_TRAPPED, /* Traced child has trapped. */
- # define CLD_TRAPPED CLD_TRAPPED
- CLD_STOPPED, /* Child has stopped. */
- # define CLD_STOPPED CLD_STOPPED
- CLD_CONTINUED /* Stopped child has continued. */
- # define CLD_CONTINUED CLD_CONTINUED
- };
- /* `si_code' values for SIGPOLL signal. */
- enum
- {
- POLL_IN = 1, /* Data input available. */
- # define POLL_IN POLL_IN
- POLL_OUT, /* Output buffers available. */
- # define POLL_OUT POLL_OUT
- POLL_MSG, /* Input message available. */
- # define POLL_MSG POLL_MSG
- POLL_ERR, /* I/O error. */
- # define POLL_ERR POLL_ERR
- POLL_PRI, /* High priority input available. */
- # define POLL_PRI POLL_PRI
- POLL_HUP /* Device disconnected. */
- # define POLL_HUP POLL_HUP
- };
- # undef __need_siginfo_t
- #endif /* !have siginfo_t && (have _SIGNAL_H || need siginfo_t). */
- #if (defined _SIGNAL_H || defined __need_sigevent_t)
- && !defined __have_sigevent_t
- # define __have_sigevent_t 1
- /* Structure to transport application-defined values with signals. */
- # define __SIGEV_MAX_SIZE 64
- # if __WORDSIZE == 64
- # define __SIGEV_PAD_SIZE ((__SIGEV_MAX_SIZE / sizeof (int)) - 4)
- # else
- # define __SIGEV_PAD_SIZE ((__SIGEV_MAX_SIZE / sizeof (int)) - 3)
- # endif
- typedef struct sigevent
- {
- sigval_t sigev_value;
- int sigev_signo;
- int sigev_notify;
- union
- {
- int _pad[__SIGEV_PAD_SIZE];
- /* When SIGEV_SIGNAL and SIGEV_THREAD_ID set, LWP ID of the
- thread to receive the signal. */
- __pid_t _tid;
- struct
- {
- void (*_function) (sigval_t); /* Function to start. */
- void *_attribute; /* Really pthread_attr_t. */
- } _sigev_thread;
- } _sigev_un;
- } sigevent_t;
- /* POSIX names to access some of the members. */
- # define sigev_notify_function _sigev_un._sigev_thread._function
- # define sigev_notify_attributes _sigev_un._sigev_thread._attribute
- /* `sigev_notify' values. */
- enum
- {
- SIGEV_SIGNAL = 0, /* Notify via signal. */
- # define SIGEV_SIGNAL SIGEV_SIGNAL
- SIGEV_NONE, /* Other notification: meaningless. */
- # define SIGEV_NONE SIGEV_NONE
- SIGEV_THREAD, /* Deliver via thread creation. */
- # define SIGEV_THREAD SIGEV_THREAD
- SIGEV_THREAD_ID = 4 /* Send signal to specific thread. */
- #define SIGEV_THREAD_ID SIGEV_THREAD_ID
- };
- #endif /* have _SIGNAL_H. */