mirror of
https://github.com/python/cpython.git
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156 lines
2.7 KiB
C
156 lines
2.7 KiB
C
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#ifdef MACH_C_THREADS
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#include <mach/cthreads.h>
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#endif
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#ifdef HURD_C_THREADS
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#include <cthreads.h>
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#endif
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/*
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* Initialization.
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*/
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static void
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PyThread__init_thread(void)
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{
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#ifndef HURD_C_THREADS
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/* Roland McGrath said this should not be used since this is
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done while linking to threads */
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cthread_init();
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#else
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/* do nothing */
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;
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#endif
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}
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/*
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* Thread support.
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*/
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long
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PyThread_start_new_thread(void (*func)(void *), void *arg)
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{
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int success = 0; /* init not needed when SOLARIS_THREADS and */
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/* C_THREADS implemented properly */
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dprintf(("PyThread_start_new_thread called\n"));
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if (!initialized)
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PyThread_init_thread();
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/* looks like solaris detaches the thread to never rejoin
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* so well do it here
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*/
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cthread_detach(cthread_fork((cthread_fn_t) func, arg));
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return success < 0 ? -1 : 0;
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}
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long
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PyThread_get_thread_ident(void)
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{
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if (!initialized)
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PyThread_init_thread();
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return (long) cthread_self();
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}
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static void
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do_PyThread_exit_thread(int no_cleanup)
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{
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dprintf(("PyThread_exit_thread called\n"));
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if (!initialized)
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if (no_cleanup)
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_exit(0);
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else
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exit(0);
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cthread_exit(0);
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}
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void
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PyThread_exit_thread(void)
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{
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do_PyThread_exit_thread(0);
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}
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void
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PyThread__exit_thread(void)
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{
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do_PyThread_exit_thread(1);
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}
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#ifndef NO_EXIT_PROG
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static
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void do_PyThread_exit_prog(int status, int no_cleanup)
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{
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dprintf(("PyThread_exit_prog(%d) called\n", status));
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if (!initialized)
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if (no_cleanup)
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_exit(status);
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else
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exit(status);
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if (no_cleanup)
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_exit(status);
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else
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exit(status);
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}
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void
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PyThread_exit_prog(int status)
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{
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do_PyThread_exit_prog(status, 0);
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}
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void
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PyThread__exit_prog(int status)
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{
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do_PyThread_exit_prog(status, 1);
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}
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#endif /* NO_EXIT_PROG */
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/*
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* Lock support.
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*/
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PyThread_type_lock
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PyThread_allocate_lock(void)
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{
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mutex_t lock;
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dprintf(("PyThread_allocate_lock called\n"));
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if (!initialized)
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PyThread_init_thread();
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lock = mutex_alloc();
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if (mutex_init(lock)) {
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perror("mutex_init");
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free((void *) lock);
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lock = 0;
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}
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dprintf(("PyThread_allocate_lock() -> %p\n", lock));
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return (PyThread_type_lock) lock;
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}
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void
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PyThread_free_lock(PyThread_type_lock lock)
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{
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dprintf(("PyThread_free_lock(%p) called\n", lock));
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mutex_free(lock);
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}
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int
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PyThread_acquire_lock(PyThread_type_lock lock, int waitflag)
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{
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int success = FALSE;
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dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
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if (waitflag) { /* blocking */
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mutex_lock((mutex_t)lock);
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success = TRUE;
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} else { /* non blocking */
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success = mutex_try_lock((mutex_t)lock);
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}
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dprintf(("PyThread_acquire_lock(%p, %d) -> %d\n", lock, waitflag, success));
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return success;
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}
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void
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PyThread_release_lock(PyThread_type_lock lock)
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{
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dprintf(("PyThread_release_lock(%p) called\n", lock));
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mutex_unlock((mutex_t )lock);
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}
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