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/***********************************************************
Copyright (c) 2000, BeOpen.com.
Copyright (c) 1995-2000, Corporation for National Research Initiatives.
Copyright (c) 1990-1995, Stichting Mathematisch Centrum.
All rights reserved.
See the file "Misc/COPYRIGHT" for information on usage and
redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
******************************************************************/
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <errno.h>
#include </usr/include/thread.h>
#undef _POSIX_THREADS
/*
* Initialization.
*/
static void PyThread__init_thread(void)
{
}
/*
* Thread support.
*/
struct func_arg {
void (*func)(void *);
void *arg;
};
static void *
new_func(void *funcarg)
{
void (*func)(void *);
void *arg;
func = ((struct func_arg *) funcarg)->func;
arg = ((struct func_arg *) funcarg)->arg;
free(funcarg);
(*func)(arg);
return 0;
}
int
PyThread_start_new_thread(void (*func)(void *), void *arg)
{
struct func_arg *funcarg;
int success = 0; /* init not needed when SOLARIS_THREADS and */
/* C_THREADS implemented properly */
dprintf(("PyThread_start_new_thread called\n"));
if (!initialized)
PyThread_init_thread();
funcarg = (struct func_arg *) malloc(sizeof(struct func_arg));
funcarg->func = func;
funcarg->arg = arg;
if (thr_create(0, 0, new_func, funcarg,
THR_DETACHED | THR_NEW_LWP, 0)) {
perror("thr_create");
free((void *) funcarg);
success = -1;
}
return success < 0 ? 0 : 1;
}
long
PyThread_get_thread_ident(void)
{
if (!initialized)
PyThread_init_thread();
return thr_self();
}
static void
do_PyThread_exit_thread(int no_cleanup)
{
dprintf(("PyThread_exit_thread called\n"));
if (!initialized)
if (no_cleanup)
_exit(0);
else
exit(0);
thr_exit(0);
}
void
PyThread_exit_thread(void)
{
do_PyThread_exit_thread(0);
}
void
PyThread__exit_thread(void)
{
do_PyThread_exit_thread(1);
}
#ifndef NO_EXIT_PROG
static void
do_PyThread_exit_prog(int status, int no_cleanup)
{
dprintf(("PyThread_exit_prog(%d) called\n", status));
if (!initialized)
if (no_cleanup)
_exit(status);
else
exit(status);
if (no_cleanup)
_exit(status);
else
exit(status);
}
void
PyThread_exit_prog(int status)
{
do_PyThread_exit_prog(status, 0);
}
void
PyThread__exit_prog(int status)
{
do_PyThread_exit_prog(status, 1);
}
#endif /* NO_EXIT_PROG */
/*
* Lock support.
*/
PyThread_type_lock
PyThread_allocate_lock(void)
{
mutex_t *lock;
dprintf(("PyThread_allocate_lock called\n"));
if (!initialized)
PyThread_init_thread();
lock = (mutex_t *) malloc(sizeof(mutex_t));
if (mutex_init(lock, USYNC_THREAD, 0)) {
perror("mutex_init");
free((void *) lock);
lock = 0;
}
dprintf(("PyThread_allocate_lock() -> %p\n", lock));
return (PyThread_type_lock) lock;
}
void
PyThread_free_lock(PyThread_type_lock lock)
{
dprintf(("PyThread_free_lock(%p) called\n", lock));
mutex_destroy((mutex_t *) lock);
free((void *) lock);
}
int
PyThread_acquire_lock(PyThread_type_lock lock, int waitflag)
{
int success;
dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
if (waitflag)
success = mutex_lock((mutex_t *) lock);
else
success = mutex_trylock((mutex_t *) lock);
if (success < 0)
perror(waitflag ? "mutex_lock" : "mutex_trylock");
else
success = !success; /* solaris does it the other way round */
dprintf(("PyThread_acquire_lock(%p, %d) -> %d\n", lock, waitflag, success));
return success;
}
void
PyThread_release_lock(PyThread_type_lock lock)
{
dprintf(("PyThread_release_lock(%p) called\n", lock));
if (mutex_unlock((mutex_t *) lock))
perror("mutex_unlock");
}
/*
* Semaphore support.
*/
PyThread_type_sema
PyThread_allocate_sema(int value)
{
sema_t *sema;
dprintf(("PyThread_allocate_sema called\n"));
if (!initialized)
PyThread_init_thread();
sema = (sema_t *) malloc(sizeof(sema_t));
if (sema_init(sema, value, USYNC_THREAD, 0)) {
perror("sema_init");
free((void *) sema);
sema = 0;
}
dprintf(("PyThread_allocate_sema() -> %p\n", sema));
return (PyThread_type_sema) sema;
}
void
PyThread_free_sema(PyThread_type_sema sema)
{
dprintf(("PyThread_free_sema(%p) called\n", sema));
if (sema_destroy((sema_t *) sema))
perror("sema_destroy");
free((void *) sema);
}
int
PyThread_down_sema(PyThread_type_sema sema, int waitflag)
{
int success;
dprintf(("PyThread_down_sema(%p) called\n", sema));
if (waitflag)
success = sema_wait((sema_t *) sema);
else
success = sema_trywait((sema_t *) sema);
if (success < 0) {
if (errno == EBUSY)
success = 0;
else
perror("sema_wait");
}
else
success = !success;
dprintf(("PyThread_down_sema(%p) return %d\n", sema, success));
return success;
}
void
PyThread_up_sema(PyThread_type_sema sema)
{
dprintf(("PyThread_up_sema(%p)\n", sema));
if (sema_post((sema_t *) sema))
perror("sema_post");
}
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