engine-sparc-sunos-5.3.h
上传用户:tsgydb
上传日期:2007-04-14
资源大小:10674k
文件大小:3k
源码类别:
MySQL数据库
开发平台:
Visual C++
- /* ==== machdep.h ============================================================
- * Copyright (c) 1994 Chris Provenzano, proven@athena.mit.edu
- *
- * $Id$
- *
- */
- #include <unistd.h>
- #include <setjmp.h>
- #include <sys/time.h>
- #include <sys/cdefs.h>
- /*
- * The first machine dependent functions are the SEMAPHORES
- * needing the test and set instruction.
- */
- #define SEMAPHORE_CLEAR 0
- #define SEMAPHORE_SET 0xff
- #define SEMAPHORE_TEST_AND_SET(lock)
- ({
- char *p = lock;
- long temp;
- __asm__ volatile("ldstub %1,%0"
- :"=r" (temp)
- :"m" (*p)
- :"memory");
- temp;
- })
- #define SEMAPHORE_RESET(lock)
- {
- __asm__ volatile("stb %1, %0"
- :"=m" (*lock)
- :"r" (SEMAPHORE_CLEAR)
- :"memory");
- }
- /*
- * More machine dependent macros
- */
- #ifdef PTHREAD_KERNEL
- #define machdep_save_float_state(x)
- #define machdep_restore_float_state()
- #endif
- /*
- * New types
- */
- typedef char semaphore;
- /*
- * sigset_t macros
- */
- #define SIGMAX 31
- #define SIG_ANY(sig)
- ({
- sigset_t *sig_addr = (sigset_t *)&sig;
- int ret = 0;
- int i;
- for (i = 1; i <= SIGMAX; i++) {
- if (sigismember(sig_addr, i)) {
- ret = 1;
- break;
- }
- }
- ret;
- })
- /*
- * New Strutures
- */
- struct machdep_pthread {
- void *(*start_routine)(void *);
- void *start_argument;
- void *machdep_stack;
- struct itimerval machdep_timer;
- jmp_buf machdep_state;
- };
- /*
- * Static machdep_pthread initialization values.
- * For initial thread only.
- */
- #define MACHDEP_PTHREAD_INIT
- { NULL, NULL, NULL, { { 0, 0 }, { 0, 100000 } }, 0 }
- /*
- * Minimum stack size
- */
- #undef PTHREAD_STACK_MIN /* Defined in limits.h */
- #define PTHREAD_STACK_MIN 1024
- /*
- * Some fd flag defines that are necessary to distinguish between posix
- * behavior and bsd4.3 behavior.
- */
- #define __FD_NONBLOCK (O_NONBLOCK | O_NDELAY)
- /*
- * New functions
- */
- __BEGIN_DECLS
- #if defined(PTHREAD_KERNEL)
- #define __machdep_stack_get(x) (x)->machdep_stack
- #define __machdep_stack_set(x, y) (x)->machdep_stack = y
- #define __machdep_stack_repl(x, y)
- {
- if (stack = __machdep_stack_get(x)) {
- __machdep_stack_free(stack);
- }
- __machdep_stack_set(x, y);
- }
- void * __machdep_stack_alloc __P_((size_t));
- void __machdep_stack_free __P_((void *));
- int machdep_save_state __P_((void));
- #endif
- __END_DECLS