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Unified Diff: Python/thread_lwp.h

Issue 10639: reindent.py converts newlines to platform default
Patch Set: Created 8 years, 8 months ago
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Python/thread_lwp.h Mon Jul 25 09:47:18 2011 -0400
@@ -0,0 +1,113 @@
+
+#include <stdlib.h>
+#include <lwp/lwp.h>
+#include <lwp/stackdep.h>
+
+#define STACKSIZE 1000 /* stacksize for a thread */
+#define NSTACKS 2 /* # stacks to be put in cache initially */
+
+struct lock {
+ int lock_locked;
+ cv_t lock_condvar;
+ mon_t lock_monitor;
+};
+
+
+/*
+ * Initialization.
+ */
+static void PyThread__init_thread(void)
+{
+ lwp_setstkcache(STACKSIZE, NSTACKS);
+}
+
+/*
+ * Thread support.
+ */
+
+
+long PyThread_start_new_thread(void (*func)(void *), void *arg)
+{
+ thread_t tid;
+ int success;
+ dprintf(("PyThread_start_new_thread called\n"));
+ if (!initialized)
+ PyThread_init_thread();
+ success = lwp_create(&tid, func, MINPRIO, 0, lwp_newstk(), 1, arg);
+ return success < 0 ? -1 : 0;
+}
+
+long PyThread_get_thread_ident(void)
+{
+ thread_t tid;
+ if (!initialized)
+ PyThread_init_thread();
+ if (lwp_self(&tid) < 0)
+ return -1;
+ return tid.thread_id;
+}
+
+void PyThread_exit_thread(void)
+{
+ dprintf(("PyThread_exit_thread called\n"));
+ if (!initialized)
+ exit(0);
+ lwp_destroy(SELF);
+}
+
+/*
+ * Lock support.
+ */
+PyThread_type_lock PyThread_allocate_lock(void)
+{
+ struct lock *lock;
+ extern char *malloc(size_t);
+
+ dprintf(("PyThread_allocate_lock called\n"));
+ if (!initialized)
+ PyThread_init_thread();
+
+ lock = (struct lock *) malloc(sizeof(struct lock));
+ lock->lock_locked = 0;
+ (void) mon_create(&lock->lock_monitor);
+ (void) cv_create(&lock->lock_condvar, lock->lock_monitor);
+ 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));
+ mon_destroy(((struct lock *) lock)->lock_monitor);
+ free((char *) lock);
+}
+
+int PyThread_acquire_lock(PyThread_type_lock lock, int waitflag)
+{
+ int success;
+
+ dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, waitflag));
+ success = 0;
+
+ (void) mon_enter(((struct lock *) lock)->lock_monitor);
+ if (waitflag)
+ while (((struct lock *) lock)->lock_locked)
+ cv_wait(((struct lock *) lock)->lock_condvar);
+ if (!((struct lock *) lock)->lock_locked) {
+ success = 1;
+ ((struct lock *) lock)->lock_locked = 1;
+ }
+ cv_broadcast(((struct lock *) lock)->lock_condvar);
+ mon_exit(((struct lock *) lock)->lock_monitor);
+ 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));
+ (void) mon_enter(((struct lock *) lock)->lock_monitor);
+ ((struct lock *) lock)->lock_locked = 0;
+ cv_broadcast(((struct lock *) lock)->lock_condvar);
+ mon_exit(((struct lock *) lock)->lock_monitor);
+}
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