mirror of
https://github.com/MariaDB/server.git
synced 2025-01-19 13:32:33 +01:00
110 lines
2.6 KiB
C
110 lines
2.6 KiB
C
/* ==== machdep.h ============================================================
|
|
* Copyright (c) 1994 Chris Provenzano (proven@athena.mit.edu) and
|
|
* Ken Raeburn (raeburn@mit.edu).
|
|
*
|
|
* $Id$
|
|
*
|
|
*/
|
|
|
|
#ifndef sigwait
|
|
#define sigwait __bogus_osf1_sigwait
|
|
#endif
|
|
|
|
#include <unistd.h>
|
|
#include <setjmp.h>
|
|
#include <sys/time.h>
|
|
#include <sys/cdefs.h>
|
|
|
|
#undef sigwait
|
|
|
|
/* 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)
|
|
|
|
/*
|
|
* 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 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));
|
|
|
|
#endif
|
|
|
|
__END_DECLS
|