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authorrobot-piglet <[email protected]>2024-02-11 01:42:33 +0300
committerDaniil Cherednik <[email protected]>2024-02-14 14:25:43 +0000
commitbc891c35d94ba3f0690fa7d88e2ceb4108990606 (patch)
tree56805f88168d3e21e18f78120313fe9e15c445c7 /contrib/tools/python/src/Python/thread_atheos.h
parentda0b2f611b118cda7d3dd5d111864d8f72ce3c12 (diff)
Intermediate changes
Diffstat (limited to 'contrib/tools/python/src/Python/thread_atheos.h')
-rw-r--r--contrib/tools/python/src/Python/thread_atheos.h259
1 files changed, 0 insertions, 259 deletions
diff --git a/contrib/tools/python/src/Python/thread_atheos.h b/contrib/tools/python/src/Python/thread_atheos.h
deleted file mode 100644
index 230594f1446..00000000000
--- a/contrib/tools/python/src/Python/thread_atheos.h
+++ /dev/null
@@ -1,259 +0,0 @@
-/* Threading for AtheOS.
- Based on thread_beos.h. */
-
-#include <atheos/threads.h>
-#include <atheos/semaphore.h>
-#include <atheos/atomic.h>
-#include <errno.h>
-#include <string.h>
-
-/* Missing decl from threads.h */
-extern int exit_thread(int);
-
-
-/* Undefine FASTLOCK to play with simple semaphores. */
-#define FASTLOCK
-
-
-#ifdef FASTLOCK
-
-/* Use an atomic counter and a semaphore for maximum speed. */
-typedef struct fastmutex {
- sem_id sem;
- atomic_t count;
-} fastmutex_t;
-
-
-static int fastmutex_create(const char *name, fastmutex_t * mutex);
-static int fastmutex_destroy(fastmutex_t * mutex);
-static int fastmutex_lock(fastmutex_t * mutex);
-static int fastmutex_timedlock(fastmutex_t * mutex, bigtime_t timeout);
-static int fastmutex_unlock(fastmutex_t * mutex);
-
-
-static int fastmutex_create(const char *name, fastmutex_t * mutex)
-{
- mutex->count = 0;
- mutex->sem = create_semaphore(name, 0, 0);
- return (mutex->sem < 0) ? -1 : 0;
-}
-
-
-static int fastmutex_destroy(fastmutex_t * mutex)
-{
- if (fastmutex_timedlock(mutex, 0) == 0 || errno == EWOULDBLOCK) {
- return delete_semaphore(mutex->sem);
- }
- return 0;
-}
-
-
-static int fastmutex_lock(fastmutex_t * mutex)
-{
- atomic_t prev = atomic_add(&mutex->count, 1);
- if (prev > 0)
- return lock_semaphore(mutex->sem);
- return 0;
-}
-
-
-static int fastmutex_timedlock(fastmutex_t * mutex, bigtime_t timeout)
-{
- atomic_t prev = atomic_add(&mutex->count, 1);
- if (prev > 0)
- return lock_semaphore_x(mutex->sem, 1, 0, timeout);
- return 0;
-}
-
-
-static int fastmutex_unlock(fastmutex_t * mutex)
-{
- atomic_t prev = atomic_add(&mutex->count, -1);
- if (prev > 1)
- return unlock_semaphore(mutex->sem);
- return 0;
-}
-
-
-#endif /* FASTLOCK */
-
-
-/*
- * Initialization.
- *
- */
-static void PyThread__init_thread(void)
-{
- /* Do nothing. */
- return;
-}
-
-
-/*
- * Thread support.
- *
- */
-
-static atomic_t thread_count = 0;
-
-long PyThread_start_new_thread(void (*func) (void *), void *arg)
-{
- status_t success = -1;
- thread_id tid;
- char name[OS_NAME_LENGTH];
- atomic_t this_thread;
-
- dprintf(("PyThread_start_new_thread called\n"));
-
- this_thread = atomic_add(&thread_count, 1);
- PyOS_snprintf(name, sizeof(name), "python thread (%d)", this_thread);
-
- tid = spawn_thread(name, func, NORMAL_PRIORITY, 0, arg);
- if (tid < 0) {
- dprintf(("PyThread_start_new_thread spawn_thread failed: %s\n", strerror(errno)));
- } else {
- success = resume_thread(tid);
- if (success < 0) {
- dprintf(("PyThread_start_new_thread resume_thread failed: %s\n", strerror(errno)));
- }
- }
-
- return (success < 0 ? -1 : tid);
-}
-
-
-long PyThread_get_thread_ident(void)
-{
- return get_thread_id(NULL);
-}
-
-
-void PyThread_exit_thread(void)
-{
- dprintf(("PyThread_exit_thread called\n"));
-
- /* Thread-safe way to read a variable without a mutex: */
- if (atomic_add(&thread_count, 0) == 0) {
- /* No threads around, so exit main(). */
- exit(0);
- } else {
- /* We're a thread */
- exit_thread(0);
- }
-}
-
-
-/*
- * Lock support.
- *
- */
-
-static atomic_t lock_count = 0;
-
-PyThread_type_lock PyThread_allocate_lock(void)
-{
-#ifdef FASTLOCK
- fastmutex_t *lock;
-#else
- sem_id sema;
-#endif
- char name[OS_NAME_LENGTH];
- atomic_t this_lock;
-
- dprintf(("PyThread_allocate_lock called\n"));
-
-#ifdef FASTLOCK
- lock = (fastmutex_t *) malloc(sizeof(fastmutex_t));
- if (lock == NULL) {
- dprintf(("PyThread_allocate_lock failed: out of memory\n"));
- return (PyThread_type_lock) NULL;
- }
-#endif
- this_lock = atomic_add(&lock_count, 1);
- PyOS_snprintf(name, sizeof(name), "python lock (%d)", this_lock);
-
-#ifdef FASTLOCK
- if (fastmutex_create(name, lock) < 0) {
- dprintf(("PyThread_allocate_lock failed: %s\n",
- strerror(errno)));
- free(lock);
- lock = NULL;
- }
- dprintf(("PyThread_allocate_lock()-> %p\n", lock));
- return (PyThread_type_lock) lock;
-#else
- sema = create_semaphore(name, 1, 0);
- if (sema < 0) {
- dprintf(("PyThread_allocate_lock failed: %s\n",
- strerror(errno)));
- sema = 0;
- }
- dprintf(("PyThread_allocate_lock()-> %p\n", sema));
- return (PyThread_type_lock) sema;
-#endif
-}
-
-
-void PyThread_free_lock(PyThread_type_lock lock)
-{
- dprintf(("PyThread_free_lock(%p) called\n", lock));
-
-#ifdef FASTLOCK
- if (fastmutex_destroy((fastmutex_t *) lock) < 0) {
- dprintf(("PyThread_free_lock(%p) failed: %s\n", lock,
- strerror(errno)));
- }
- free(lock);
-#else
- if (delete_semaphore((sem_id) lock) < 0) {
- dprintf(("PyThread_free_lock(%p) failed: %s\n", lock,
- strerror(errno)));
- }
-#endif
-}
-
-
-int PyThread_acquire_lock(PyThread_type_lock lock, int waitflag)
-{
- int retval;
-
- dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock,
- waitflag));
-
-#ifdef FASTLOCK
- if (waitflag)
- retval = fastmutex_lock((fastmutex_t *) lock);
- else
- retval = fastmutex_timedlock((fastmutex_t *) lock, 0);
-#else
- if (waitflag)
- retval = lock_semaphore((sem_id) lock);
- else
- retval = lock_semaphore_x((sem_id) lock, 1, 0, 0);
-#endif
- if (retval < 0) {
- dprintf(("PyThread_acquire_lock(%p, %d) failed: %s\n",
- lock, waitflag, strerror(errno)));
- }
- dprintf(("PyThread_acquire_lock(%p, %d)-> %d\n", lock, waitflag,
- retval));
- return retval < 0 ? 0 : 1;
-}
-
-
-void PyThread_release_lock(PyThread_type_lock lock)
-{
- dprintf(("PyThread_release_lock(%p) called\n", lock));
-
-#ifdef FASTLOCK
- if (fastmutex_unlock((fastmutex_t *) lock) < 0) {
- dprintf(("PyThread_release_lock(%p) failed: %s\n", lock,
- strerror(errno)));
- }
-#else
- if (unlock_semaphore((sem_id) lock) < 0) {
- dprintf(("PyThread_release_lock(%p) failed: %s\n", lock,
- strerror(errno)));
- }
-#endif
-}