diff options
Diffstat (limited to 'Python/thread_atheos.h')
-rw-r--r-- | Python/thread_atheos.h | 242 |
1 files changed, 121 insertions, 121 deletions
diff --git a/Python/thread_atheos.h b/Python/thread_atheos.h index 747a6a2..230594f 100644 --- a/Python/thread_atheos.h +++ b/Python/thread_atheos.h @@ -19,8 +19,8 @@ extern int exit_thread(int); /* Use an atomic counter and a semaphore for maximum speed. */ typedef struct fastmutex { - sem_id sem; - atomic_t count; + sem_id sem; + atomic_t count; } fastmutex_t; @@ -33,49 +33,49 @@ 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; + 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; + 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; + 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; + 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; + atomic_t prev = atomic_add(&mutex->count, -1); + if (prev > 1) + return unlock_semaphore(mutex->sem); + return 0; } -#endif /* FASTLOCK */ +#endif /* FASTLOCK */ /* @@ -84,8 +84,8 @@ static int fastmutex_unlock(fastmutex_t * mutex) */ static void PyThread__init_thread(void) { - /* Do nothing. */ - return; + /* Do nothing. */ + return; } @@ -98,48 +98,48 @@ 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); + 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); + 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); - } + 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); + } } @@ -153,107 +153,107 @@ static atomic_t lock_count = 0; PyThread_type_lock PyThread_allocate_lock(void) { #ifdef FASTLOCK - fastmutex_t *lock; + fastmutex_t *lock; #else - sem_id sema; + sem_id sema; #endif - char name[OS_NAME_LENGTH]; - atomic_t this_lock; + char name[OS_NAME_LENGTH]; + atomic_t this_lock; - dprintf(("PyThread_allocate_lock called\n")); + 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; - } + 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); + 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; + 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; + 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)); + 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); + 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))); - } + 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; + int retval; - dprintf(("PyThread_acquire_lock(%p, %d) called\n", lock, - waitflag)); + 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); + 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); + 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; + 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)); + 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))); - } + 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))); - } + if (unlock_semaphore((sem_id) lock) < 0) { + dprintf(("PyThread_release_lock(%p) failed: %s\n", lock, + strerror(errno))); + } #endif } |