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-
- #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.
- */
-
-
- int 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 ? 0 : 1;
- }
-
- 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;
- }
-
- 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);
- lwp_destroy(SELF);
- }
-
- 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);
- pod_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)
- {
- 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);
- }
-
- /*
- * Semaphore support.
- */
- PyThread_type_sema PyThread_allocate_sema(int value)
- {
- PyThread_type_sema 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));
- }
-