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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 <mach/cthreads.h>
/*
* Initialization.
*/
static void
PyThread__init_thread(void)
{
cthread_init();
}
/*
* Thread support.
*/
int
PyThread_start_new_thread(func, void (*func)(void *), void *arg)
{
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();
/* looks like solaris detaches the thread to never rejoin
* so well do it here
*/
cthread_detach(cthread_fork((cthread_fn_t) func, arg));
return success < 0 ? 0 : 1;
}
long
PyThread_get_thread_ident(void)
{
if (!initialized)
PyThread_init_thread();
return (long) cthread_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);
cthread_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_alloc();
if (mutex_init(lock)) {
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_free(lock);
}
int
PyThread_acquire_lock(PyThread_type_lock lock, int waitflag)
{
int success = FALSE;
dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
if (waitflag) { /* blocking */
mutex_lock(lock);
success = TRUE;
} else { /* non blocking */
success = mutex_try_lock(lock);
}
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));
mutex_unlock((mutex_t )lock);
}
/*
* Semaphore support.
*
* This implementation is ripped directly from the pthreads implementation.
* Which is to say that it is 100% non-functional at this time.
*
* Assuming the page is still up, documentation can be found at:
*
* http://www.doc.ic.ac.uk/~mac/manuals/solaris-manual-pages/solaris/usr/man/man2/_lwp_sema_wait.2.html
*
* Looking at the man page, it seems that one could easily implement a
* semaphore using a condition.
*
*/
PyThread_type_sema
PyThread_allocate_sema(int value)
{
char *sema = 0;
dprintf(("PyThread_allocate_sema called\n"));
if (!initialized)
PyThread_init_thread();
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));
}
int
PyThread_down_sema(PyThread_type_sema sema, int waitflag)
{
dprintf(("PyThread_down_sema(%p, %d) called\n", sema, waitflag));
dprintf(("PyThread_down_sema(%p) return\n", sema));
return -1;
}
void
PyThread_up_sema(PyThread_type_sema sema)
{
dprintf(("PyThread_up_sema(%p)\n", sema));
}
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