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#define _PLAN9_SOURCE
#include <u.h>
#include <lib9.h>
#include <qlock.h>
/*
* Initialization.
*/
static void
PyThread__init_thread(void)
{
}
/*
* Thread support.
*/
long
PyThread_start_new_thread(void (*func)(void *), void *arg)
{
dprintf(("PyThread_start_new_thread called\n"));
if (!initialized)
PyThread_init_thread();
switch(rfork(RFPROC|RFMEM)){
case -1:
printf("rfork: %r\n");
return -1;
case 0:
_threadarg->fn = func;
_threadarg->arg = arg;
longjmp(_threadarg->jb, 1);
default:
return 0;
}
}
long
PyThread_get_thread_ident(void)
{
if (!initialized)
PyThread_init_thread();
return getpid();
}
void
PyThread_exit_thread(void)
{
if(initialized)
_exit(0);
exit(0);
}
void
PyThread__exit_thread(void)
{
_exit(0);
}
#ifndef NO_EXIT_PROG
static
void do_PyThread_exit_prog(int status, int no_cleanup)
{
/*
* BUG BUG BUG
*/
dprintf(("PyThread_exit_prog(%d) called\n", status));
if (!initialized)
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)
{
QLock *lk;
dprintf(("PyThread_allocate_lock called\n"));
if (!initialized)
PyThread_init_thread();
lk = malloc(sizeof(*lk));
memset(lk, 0, sizeof(*lk));
dprintf(("PyThread_allocate_lock() -> %p\n", lk));
return lk;
}
void
PyThread_free_lock(PyThread_type_lock lock)
{
dprintf(("PyThread_free_lock(%p) called\n", lock));
free(lock);
}
int
PyThread_acquire_lock(PyThread_type_lock lock, int waitflag)
{
int success;
dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
if(lock == nil)
success = 0;
else if(waitflag){
qlock(lock);
success = 1;
}else
success = canqlock(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));
qunlock(lock);
}
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