engine-r2000-ultrix-4.2.h
上传用户:tsgydb
上传日期:2007-04-14
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文件大小:2k
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MySQL数据库
开发平台:
Visual C++
- /* ==== machdep.h ============================================================
- * Copyright (c) 1993 Chris Provenzano, proven@athena.mit.edu
- *
- * $Id$
- *
- * Description : Machine dependent header for decstation with r2000/r3000
- * running Ultrix-4.2
- *
- * 1.00 93/07/21 proven
- * -Started coding this file.
- */
- #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 1
- #define SEMAPHORE_TEST_AND_SET(lock) semaphore_test_and_set(lock)
- #define SEMAPHORE_RESET(lock) *lock = SEMAPHORE_CLEAR
- /*
- * New types
- */
- typedef long semaphore;
- #if !defined(_POSIX_SOURCE)
- /* typedef int ssize_t; */
- #if !defined(__GNUC__)
- /*
- * sigset_t macros
- */
- typedef int sigset_t;
- #define sigaddset(set, num) ((*set) |= (1 << (num - 1)))
- #define sigemptyset(set) (*set = 0)
- #endif
- #endif
- #define SIG_ANY(sig) (sig)
- #define SIGMAX 31
- /*
- * New Structures
- */
- 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 }
- /*
- * Min stacksize, arch dependent
- */
- #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 semaphore_test_and_set __P_((semaphore *));
- int machdep_save_state __P_((void));
- #endif
- __END_DECLS