engine-alpha-netbsd-1.1.h
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上传日期:2007-04-14
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文件大小:3k
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MySQL数据库
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Visual C++
- /* ==== machdep.h ============================================================
- * Copyright (c) 1994 Chris Provenzano (proven@athena.mit.edu) and
- * Ken Raeburn (raeburn@mit.edu).
- *
- * engine-alpha-osf1.h,v 1.4.4.1 1995/12/13 05:41:42 proven Exp
- *
- */
- #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.
- On the Alpha, the actual values here are irrelevant; they just have
- to be different. */
- #define SEMAPHORE_CLEAR 0
- #define SEMAPHORE_SET 1
- #if 0
- #define SEMAPHORE_TEST_AND_SET(lock)
- ({ int *_sem_lock = (lock), locked, old;
- asm ("mb" : : : "memory");
- do { asm ("ldl_l %0,%1" : "=r" (old) : "m" (*_sem_lock));
- /* ?? if (old != SEMAPHORE_CLEAR) break; */
- asm ("stl_c %0,%1" : "=r" (locked), "=m" (*_sem_lock)
- : "0" (SEMAPHORE_SET));
- } while (!locked);
- asm ("mb" : : : "memory");
- old == SEMAPHORE_CLEAR; })
- #define SEMAPHORE_RESET(lock)
- ({ int *_sem_lock = (lock);
- *_sem_lock = SEMAPHORE_CLEAR;
- asm ("mb" : : : "memory"); })
- #endif
- /*
- * New types
- */
- typedef int 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;
- unsigned long machdep_istate[11];
- unsigned long machdep_fstate[9];
- };
- /*
- * 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 2048
- /*
- * 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)
- #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));
- int __machdep_save_int_state __P_((unsigned long *));
- void __machdep_restore_int_state __P_((unsigned long *));
- void __machdep_save_fp_state __P_((unsigned long *));
- void __machdep_restore_fp_state __P_((unsigned long *));
- #endif
- __END_DECLS