engine-i386-freebsd-1.1.h
上传用户:tsgydb
上传日期:2007-04-14
资源大小:10674k
文件大小:2k
源码类别:
MySQL数据库
开发平台:
Visual C++
- /* ==== machdep.h ============================================================
- * Copyright (c) 1993 Chris Provenzano, proven@athena.mit.edu
- *
- * $Id$
- *
- */
- #include <unistd.h>
- #include <setjmp.h>
- #include <sys/time.h>
- /*
- * The first machine dependent functions are the SEMAPHORES
- * needing the test and set instruction.
- */
- #define SEMAPHORE_CLEAR 0
- #define SEMAPHORE_SET 1
- #define SEMAPHORE_TEST_AND_SET(lock)
- ({
- long temp = SEMAPHORE_SET;
- __asm__ volatile ("xchgl %0,(%2)"
- :"=r" (temp)
- :"0" (temp),"r" (lock));
- temp;
- })
- #define SEMAPHORE_RESET(lock) *lock = SEMAPHORE_CLEAR
- /*
- * New types
- */
- typedef long semaphore;
- /*
- * sigset_t macros
- */
- #define SIG_ANY(sig) (sig)
- #define SIGMAX 31
- /*
- * 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
- */
- #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
- /*
- * New functions
- */
- __BEGIN_DECLS
- #if defined(PTHREAD_KERNEL)
- int machdep_save_state __P_((void));
- #endif
- __END_DECLS