diff options
Diffstat (limited to 'linuxthreads')
| -rw-r--r-- | linuxthreads/Makefile | 2 | ||||
| -rw-r--r-- | linuxthreads/cancel.c | 6 | ||||
| -rw-r--r-- | linuxthreads/condvar.c | 12 | ||||
| -rw-r--r-- | linuxthreads/internals.h | 4 | ||||
| -rw-r--r-- | linuxthreads/join.c | 24 | ||||
| -rw-r--r-- | linuxthreads/manager.c | 18 | ||||
| -rw-r--r-- | linuxthreads/mutex.c | 6 | ||||
| -rw-r--r-- | linuxthreads/pthread.c | 14 | ||||
| -rw-r--r-- | linuxthreads/rwlock.c | 24 | ||||
| -rw-r--r-- | linuxthreads/semaphore.c | 36 | ||||
| -rw-r--r-- | linuxthreads/signals.c | 4 | ||||
| -rw-r--r-- | linuxthreads/spinlock.c | 34 | ||||
| -rw-r--r-- | linuxthreads/spinlock.h | 8 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/alpha/pspinlock.c | 109 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/arm/pspinlock.c | 81 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/i386/pspinlock.c | 97 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/m68k/pspinlock.c | 81 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/mips/pspinlock.c | 66 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/powerpc/pspinlock.c | 66 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/pthread/bits/pthreadtypes.h | 15 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/sparc/sparc32/pspinlock.c | 66 | ||||
| -rw-r--r-- | linuxthreads/sysdeps/sparc/sparc64/pspinlock.c | 66 |
22 files changed, 723 insertions, 116 deletions
diff --git a/linuxthreads/Makefile b/linuxthreads/Makefile index 6e44363..777fb2b 100644 --- a/linuxthreads/Makefile +++ b/linuxthreads/Makefile @@ -35,7 +35,7 @@ extra-libs-others := $(extra-libs) libpthread-routines := attr cancel condvar join manager mutex ptfork \ ptlongjmp pthread signals specific errno lockfile \ semaphore spinlock wrapsyscall rwlock pt-machine \ - oldsemaphore events getcpuclockid + oldsemaphore events getcpuclockid pspinlock vpath %.c Examples tests = ex1 ex2 ex3 ex4 ex5 ex6 ex7 diff --git a/linuxthreads/cancel.c b/linuxthreads/cancel.c index 067e3f6..a51e8cc 100644 --- a/linuxthreads/cancel.c +++ b/linuxthreads/cancel.c @@ -58,14 +58,14 @@ int pthread_cancel(pthread_t thread) __pthread_lock(&handle->h_lock, NULL); if (invalid_handle(handle, thread)) { - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); return ESRCH; } th = handle->h_descr; if (th->p_canceled) { - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); return 0; } @@ -85,7 +85,7 @@ int pthread_cancel(pthread_t thread) th->p_woken_by_cancel = dorestart; } - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); /* If the thread has suspended or is about to, then we unblock it by issuing a restart, instead of a cancel signal. Otherwise we send diff --git a/linuxthreads/condvar.c b/linuxthreads/condvar.c index ab107c1..536d88e 100644 --- a/linuxthreads/condvar.c +++ b/linuxthreads/condvar.c @@ -50,7 +50,7 @@ static int cond_extricate_func(void *obj, pthread_descr th) __pthread_lock(&cond->__c_lock, self); did_remove = remove_from_queue(&cond->__c_waiting, th); - __pthread_spin_unlock(&cond->__c_lock); + __pthread_unlock(&cond->__c_lock); return did_remove; } @@ -85,7 +85,7 @@ int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex) enqueue(&cond->__c_waiting, self); else already_canceled = 1; - __pthread_spin_unlock(&cond->__c_lock); + __pthread_unlock(&cond->__c_lock); if (already_canceled) { __pthread_set_own_extricate_if(self, 0); @@ -138,7 +138,7 @@ pthread_cond_timedwait_relative(pthread_cond_t *cond, enqueue(&cond->__c_waiting, self); else already_canceled = 1; - __pthread_spin_unlock(&cond->__c_lock); + __pthread_unlock(&cond->__c_lock); if (already_canceled) { __pthread_set_own_extricate_if(self, 0); @@ -155,7 +155,7 @@ pthread_cond_timedwait_relative(pthread_cond_t *cond, __pthread_lock(&cond->__c_lock, self); was_on_queue = remove_from_queue(&cond->__c_waiting, self); - __pthread_spin_unlock(&cond->__c_lock); + __pthread_unlock(&cond->__c_lock); if (was_on_queue) { __pthread_set_own_extricate_if(self, 0); @@ -196,7 +196,7 @@ int pthread_cond_signal(pthread_cond_t *cond) __pthread_lock(&cond->__c_lock, NULL); th = dequeue(&cond->__c_waiting); - __pthread_spin_unlock(&cond->__c_lock); + __pthread_unlock(&cond->__c_lock); if (th != NULL) restart(th); return 0; } @@ -209,7 +209,7 @@ int pthread_cond_broadcast(pthread_cond_t *cond) /* Copy the current state of the waiting queue and empty it */ tosignal = cond->__c_waiting; cond->__c_waiting = NULL; - __pthread_spin_unlock(&cond->__c_lock); + __pthread_unlock(&cond->__c_lock); /* Now signal each process in the queue */ while ((th = dequeue(&tosignal)) != NULL) restart(th); return 0; diff --git a/linuxthreads/internals.h b/linuxthreads/internals.h index e41e5d3..3790efe 100644 --- a/linuxthreads/internals.h +++ b/linuxthreads/internals.h @@ -138,7 +138,7 @@ struct _pthread_descr_struct { pthread_t p_tid; /* Thread identifier */ int p_pid; /* PID of Unix process */ int p_priority; /* Thread priority (== 0 if not realtime) */ - pthread_spinlock_t * p_lock; /* Spinlock for synchronized accesses */ + struct _pthread_fastlock * p_lock; /* Spinlock for synchronized accesses */ int p_signal; /* last signal received */ sigjmp_buf * p_signal_jmp; /* where to siglongjmp on a signal or NULL */ sigjmp_buf * p_cancel_jmp; /* where to siglongjmp on a cancel or NULL */ @@ -189,7 +189,7 @@ struct _pthread_descr_struct { typedef struct pthread_handle_struct * pthread_handle; struct pthread_handle_struct { - pthread_spinlock_t h_lock; /* Fast lock for sychronized access */ + struct _pthread_fastlock h_lock; /* Fast lock for sychronized access */ pthread_descr h_descr; /* Thread descriptor or NULL if invalid */ char * h_bottom; /* Lowest address in the stack thread */ }; diff --git a/linuxthreads/join.c b/linuxthreads/join.c index 7c9b6c5..95c0ab6 100644 --- a/linuxthreads/join.c +++ b/linuxthreads/join.c @@ -62,7 +62,7 @@ void pthread_exit(void * retval) THREAD_SETMEM(self, p_terminated, 1); /* See if someone is joining on us */ joining = THREAD_GETMEM(self, p_joining); - __pthread_spin_unlock(THREAD_GETMEM(self, p_lock)); + __pthread_unlock(THREAD_GETMEM(self, p_lock)); /* Restart joining thread if any */ if (joining != NULL) restart(joining); /* If this is the initial thread, block until all threads have terminated. @@ -76,7 +76,7 @@ void pthread_exit(void * retval) /* Main thread flushes stdio streams and runs atexit functions. It also calls a handler within LinuxThreads which sends a process exit request to the thread manager. */ - exit(0); + exit(0); } /* Threads other than the main one terminate without flushing stdio streams or running atexit functions. */ @@ -97,7 +97,7 @@ static int join_extricate_func(void *obj, pthread_descr th) jo = handle->h_descr; did_remove = jo->p_joining != NULL; jo->p_joining = NULL; - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); return did_remove; } @@ -117,17 +117,17 @@ int pthread_join(pthread_t thread_id, void ** thread_return) __pthread_lock(&handle->h_lock, self); if (invalid_handle(handle, thread_id)) { - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); return ESRCH; } th = handle->h_descr; if (th == self) { - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); return EDEADLK; } /* If detached or already joined, error */ if (th->p_detached || th->p_joining != NULL) { - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); return EINVAL; } /* If not terminated yet, suspend ourselves. */ @@ -139,7 +139,7 @@ int pthread_join(pthread_t thread_id, void ** thread_return) th->p_joining = self; else already_canceled = 1; - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); if (already_canceled) { __pthread_set_own_extricate_if(self, 0); @@ -160,7 +160,7 @@ int pthread_join(pthread_t thread_id, void ** thread_return) } /* Get return value */ if (thread_return != NULL) *thread_return = th->p_retval; - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); /* Send notification to thread manager */ if (__pthread_manager_request >= 0) { request.req_thread = self; @@ -181,24 +181,24 @@ int pthread_detach(pthread_t thread_id) __pthread_lock(&handle->h_lock, NULL); if (invalid_handle(handle, thread_id)) { - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); return ESRCH; } th = handle->h_descr; /* If already detached, error */ if (th->p_detached) { - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); return EINVAL; } /* If already joining, don't do anything. */ if (th->p_joining != NULL) { - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); return 0; } /* Mark as detached */ th->p_detached = 1; terminated = th->p_terminated; - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); /* If already terminated, notify thread manager to reclaim resources */ if (terminated && __pthread_manager_request >= 0) { request.req_thread = thread_self(); diff --git a/linuxthreads/manager.c b/linuxthreads/manager.c index 2cc652d..149cc93 100644 --- a/linuxthreads/manager.c +++ b/linuxthreads/manager.c @@ -177,7 +177,7 @@ int __pthread_manager(void *arg) __on_exit handler, which in turn will send REQ_PROCESS_EXIT to the thread manager. In case you are wondering how the manager terminates from its loop here. */ - } + } break; case REQ_POST: __new_sem_post(request.req_args.post); @@ -207,7 +207,7 @@ int __pthread_manager_event(void *arg) /* Get the lock the manager will free once all is correctly set up. */ __pthread_lock (THREAD_GETMEM((&__pthread_manager_thread), p_lock), NULL); /* Free it immediately. */ - __pthread_spin_unlock (THREAD_GETMEM((&__pthread_manager_thread), p_lock)); + __pthread_unlock (THREAD_GETMEM((&__pthread_manager_thread), p_lock)); return __pthread_manager(arg); } @@ -273,7 +273,7 @@ static int pthread_start_thread_event(void *arg) /* Get the lock the manager will free once all is correctly set up. */ __pthread_lock (THREAD_GETMEM(self, p_lock), NULL); /* Free it immediately. */ - __pthread_spin_unlock (THREAD_GETMEM(self, p_lock)); + __pthread_unlock (THREAD_GETMEM(self, p_lock)); /* Continue with the real function. */ return pthread_start_thread (arg); @@ -474,7 +474,7 @@ static int pthread_handle_create(pthread_t *thread, const pthread_attr_t *attr, __linuxthreads_create_event (); /* Now restart the thread. */ - __pthread_spin_unlock(new_thread->p_lock); + __pthread_unlock(new_thread->p_lock); } } } @@ -523,7 +523,7 @@ static void pthread_free(pthread_descr th) __pthread_lock(&handle->h_lock, NULL); handle->h_descr = NULL; handle->h_bottom = (char *)(-1L); - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); #ifdef FREE_THREAD FREE_THREAD(th, th->p_nr); #endif @@ -594,7 +594,7 @@ static void pthread_exited(pid_t pid) } } detached = th->p_detached; - __pthread_spin_unlock(th->p_lock); + __pthread_unlock(th->p_lock); if (detached) pthread_free(th); break; @@ -637,19 +637,19 @@ static void pthread_handle_free(pthread_t th_id) if (invalid_handle(handle, th_id)) { /* pthread_reap_children has deallocated the thread already, nothing needs to be done */ - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); return; } th = handle->h_descr; if (th->p_exited) { - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); pthread_free(th); } else { /* The Unix process of the thread is still running. Mark the thread as detached so that the thread manager will deallocate its resources when the Unix process exits. */ th->p_detached = 1; - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); } } diff --git a/linuxthreads/mutex.c b/linuxthreads/mutex.c index a42167c..6494323 100644 --- a/linuxthreads/mutex.c +++ b/linuxthreads/mutex.c @@ -110,7 +110,7 @@ int __pthread_mutex_unlock(pthread_mutex_t * mutex) { switch (mutex->__m_kind) { case PTHREAD_MUTEX_FAST_NP: - __pthread_spin_unlock(&mutex->__m_lock); + __pthread_unlock(&mutex->__m_lock); return 0; case PTHREAD_MUTEX_RECURSIVE_NP: if (mutex->__m_count > 0) { @@ -118,13 +118,13 @@ int __pthread_mutex_unlock(pthread_mutex_t * mutex) return 0; } mutex->__m_owner = NULL; - __pthread_spin_unlock(&mutex->__m_lock); + __pthread_unlock(&mutex->__m_lock); return 0; case PTHREAD_MUTEX_ERRORCHECK_NP: if (mutex->__m_owner != thread_self() || mutex->__m_lock.__status == 0) return EPERM; mutex->__m_owner = NULL; - __pthread_spin_unlock(&mutex->__m_lock); + __pthread_unlock(&mutex->__m_lock); return 0; default: return EINVAL; diff --git a/linuxthreads/pthread.c b/linuxthreads/pthread.c index 0e713e7..0f63127 100644 --- a/linuxthreads/pthread.c +++ b/linuxthreads/pthread.c @@ -460,7 +460,7 @@ int __pthread_initialize_manager(void) __linuxthreads_create_event (); /* Now restart the thread. */ - __pthread_spin_unlock(__pthread_manager_thread.p_lock); + __pthread_unlock(__pthread_manager_thread.p_lock); } } } @@ -587,16 +587,16 @@ int pthread_setschedparam(pthread_t thread, int policy, __pthread_lock(&handle->h_lock, NULL); if (invalid_handle(handle, thread)) { - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); return ESRCH; } th = handle->h_descr; if (__sched_setscheduler(th->p_pid, policy, param) == -1) { - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); return errno; } th->p_priority = policy == SCHED_OTHER ? 0 : param->sched_priority; - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); if (__pthread_manager_request >= 0) __pthread_manager_adjust_prio(th->p_priority); return 0; @@ -610,11 +610,11 @@ int pthread_getschedparam(pthread_t thread, int *policy, __pthread_lock(&handle->h_lock, NULL); if (invalid_handle(handle, thread)) { - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); return ESRCH; } pid = handle->h_descr->p_pid; - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); pol = __sched_getscheduler(pid); if (pol == -1) return errno; if (__sched_getparam(pid, param) == -1) return errno; @@ -788,7 +788,7 @@ void __pthread_set_own_extricate_if(pthread_descr self, pthread_extricate_if *pe { __pthread_lock(self->p_lock, self); THREAD_SETMEM(self, p_extricate, peif); - __pthread_spin_unlock(self->p_lock); + __pthread_unlock(self->p_lock); } /* Primitives for controlling thread execution */ diff --git a/linuxthreads/rwlock.c b/linuxthreads/rwlock.c index e4a4c81..9da87d2 100644 --- a/linuxthreads/rwlock.c +++ b/linuxthreads/rwlock.c @@ -217,7 +217,7 @@ __pthread_rwlock_destroy (pthread_rwlock_t *rwlock) __pthread_lock (&rwlock->__rw_lock, NULL); readers = rwlock->__rw_readers; writer = rwlock->__rw_writer; - __pthread_spin_unlock (&rwlock->__rw_lock); + __pthread_unlock (&rwlock->__rw_lock); if (readers > 0 || writer != NULL) return EBUSY; @@ -247,12 +247,12 @@ __pthread_rwlock_rdlock (pthread_rwlock_t *rwlock) break; enqueue (&rwlock->__rw_read_waiting, self); - __pthread_spin_unlock (&rwlock->__rw_lock); + __pthread_unlock (&rwlock->__rw_lock); suspend (self); /* This is not a cancellation point */ } ++rwlock->__rw_readers; - __pthread_spin_unlock (&rwlock->__rw_lock); + __pthread_unlock (&rwlock->__rw_lock); if (have_lock_already || out_of_mem) { @@ -291,7 +291,7 @@ __pthread_rwlock_tryrdlock (pthread_rwlock_t *rwlock) retval = 0; } - __pthread_spin_unlock (&rwlock->__rw_lock); + __pthread_unlock (&rwlock->__rw_lock); if (retval == 0) { @@ -320,13 +320,13 @@ __pthread_rwlock_wrlock (pthread_rwlock_t *rwlock) if (rwlock->__rw_readers == 0 && rwlock->__rw_writer == NULL) { rwlock->__rw_writer = self; - __pthread_spin_unlock (&rwlock->__rw_lock); + __pthread_unlock (&rwlock->__rw_lock); return 0; } /* Suspend ourselves, then try again */ enqueue (&rwlock->__rw_write_waiting, self); - __pthread_spin_unlock (&rwlock->__rw_lock); + __pthread_unlock (&rwlock->__rw_lock); suspend (self); /* This is not a cancellation point */ } } @@ -344,7 +344,7 @@ __pthread_rwlock_trywrlock (pthread_rwlock_t *rwlock) rwlock->__rw_writer = thread_self (); result = 0; } - __pthread_spin_unlock (&rwlock->__rw_lock); + __pthread_unlock (&rwlock->__rw_lock); return result; } @@ -363,7 +363,7 @@ __pthread_rwlock_unlock (pthread_rwlock_t *rwlock) /* Unlocking a write lock. */ if (rwlock->__rw_writer != thread_self ()) { - __pthread_spin_unlock (&rwlock->__rw_lock); + __pthread_unlock (&rwlock->__rw_lock); return EPERM; } rwlock->__rw_writer = NULL; @@ -375,14 +375,14 @@ __pthread_rwlock_unlock (pthread_rwlock_t *rwlock) /* Restart all waiting readers. */ torestart = rwlock->__rw_read_waiting; rwlock->__rw_read_waiting = NULL; - __pthread_spin_unlock (&rwlock->__rw_lock); + __pthread_unlock (&rwlock->__rw_lock); while ((th = dequeue (&torestart)) != NULL) restart (th); } else { /* Restart one waiting writer. */ - __pthread_spin_unlock (&rwlock->__rw_lock); + __pthread_unlock (&rwlock->__rw_lock); restart (th); } } @@ -391,7 +391,7 @@ __pthread_rwlock_unlock (pthread_rwlock_t *rwlock) /* Unlocking a read lock. */ if (rwlock->__rw_readers == 0) { - __pthread_spin_unlock (&rwlock->__rw_lock); + __pthread_unlock (&rwlock->__rw_lock); return EPERM; } @@ -402,7 +402,7 @@ __pthread_rwlock_unlock (pthread_rwlock_t *rwlock) else th = NULL; - __pthread_spin_unlock (&rwlock->__rw_lock); + __pthread_unlock (&rwlock->__rw_lock); if (th != NULL) restart (th); diff --git a/linuxthreads/semaphore.c b/linuxthreads/semaphore.c index 35bb796..a772ea5 100644 --- a/linuxthreads/semaphore.c +++ b/linuxthreads/semaphore.c @@ -33,7 +33,7 @@ int __new_sem_init(sem_t *sem, int pshared, unsigned int value) errno = ENOSYS; return -1; } - __pthread_init_lock((pthread_spinlock_t *) &sem->__sem_lock); + __pthread_init_lock((struct _pthread_fastlock *) &sem->__sem_lock); sem->__sem_value = value; sem->__sem_waiting = NULL; return 0; @@ -48,9 +48,9 @@ static int new_sem_extricate_func(void *obj, pthread_descr th) sem_t *sem = obj; int did_remove = 0; - __pthread_lock((pthread_spinlock_t *) &sem->__sem_lock, self); + __pthread_lock((struct _pthread_fastlock *) &sem->__sem_lock, self); did_remove = remove_from_queue(&sem->__sem_waiting, th); - __pthread_spin_unlock((pthread_spinlock_t *) &sem->__sem_lock); + __pthread_unlock((struct _pthread_fastlock *) &sem->__sem_lock); return did_remove; } @@ -65,10 +65,10 @@ int __new_sem_wait(sem_t * sem) extr.pu_object = sem; extr.pu_extricate_func = new_sem_extricate_func; - __pthread_lock((pthread_spinlock_t *) &sem->__sem_lock, self); + __pthread_lock((struct _pthread_fastlock *) &sem->__sem_lock, self); if (sem->__sem_value > 0) { sem->__sem_value--; - __pthread_spin_unlock((pthread_spinlock_t *) &sem->__sem_lock); + __pthread_unlock((struct _pthread_fastlock *) &sem->__sem_lock); return 0; } /* Register extrication interface */ @@ -79,7 +79,7 @@ int __new_sem_wait(sem_t * sem) enqueue(&sem->__sem_waiting, self); else already_canceled = 1; - __pthread_spin_unlock((pthread_spinlock_t *) &sem->__sem_lock); + __pthread_unlock((struct _pthread_fastlock *) &sem->__sem_lock); if (already_canceled) { __pthread_set_own_extricate_if(self, 0); @@ -106,7 +106,7 @@ int __new_sem_trywait(sem_t * sem) { int retval; - __pthread_lock((pthread_spinlock_t *) &sem->__sem_lock, NULL); + __pthread_lock((struct _pthread_fastlock *) &sem->__sem_lock, NULL); if (sem->__sem_value == 0) { errno = EAGAIN; retval = -1; @@ -114,7 +114,7 @@ int __new_sem_trywait(sem_t * sem) sem->__sem_value--; retval = 0; } - __pthread_spin_unlock((pthread_spinlock_t *) &sem->__sem_lock); + __pthread_unlock((struct _pthread_fastlock *) &sem->__sem_lock); return retval; } @@ -125,19 +125,19 @@ int __new_sem_post(sem_t * sem) struct pthread_request request; if (THREAD_GETMEM(self, p_in_sighandler) == NULL) { - __pthread_lock((pthread_spinlock_t *) &sem->__sem_lock, self); + __pthread_lock((struct _pthread_fastlock *) &sem->__sem_lock, self); if (sem->__sem_waiting == NULL) { if (sem->__sem_value >= SEM_VALUE_MAX) { /* Overflow */ errno = ERANGE; - __pthread_spin_unlock((pthread_spinlock_t *) &sem->__sem_lock); + __pthread_unlock((struct _pthread_fastlock *) &sem->__sem_lock); return -1; } sem->__sem_value++; - __pthread_spin_unlock((pthread_spinlock_t *) &sem->__sem_lock); + __pthread_unlock((struct _pthread_fastlock *) &sem->__sem_lock); } else { th = dequeue(&sem->__sem_waiting); - __pthread_spin_unlock((pthread_spinlock_t *) &sem->__sem_lock); + __pthread_unlock((struct _pthread_fastlock *) &sem->__sem_lock); restart(th); } } else { @@ -196,17 +196,17 @@ int sem_timedwait(sem_t *sem, const struct timespec *abstime) pthread_extricate_if extr; int already_canceled = 0; - __pthread_lock((pthread_spinlock_t *) &sem->__sem_lock, self); + __pthread_lock((struct _pthread_fastlock *) &sem->__sem_lock, self); if (sem->__sem_value > 0) { --sem->__sem_value; - __pthread_spin_unlock((pthread_spinlock_t *) &sem->__sem_lock); + __pthread_unlock((struct _pthread_fastlock *) &sem->__sem_lock); return 0; } if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000) { /* The standard requires that if the function would block and the time value is illegal, the function returns with an error. */ - __pthread_spin_unlock((pthread_spinlock_t *) &sem->__sem_lock); + __pthread_unlock((struct _pthread_fastlock *) &sem->__sem_lock); return EINVAL; } @@ -222,7 +222,7 @@ int sem_timedwait(sem_t *sem, const struct timespec *abstime) enqueue(&sem->__sem_waiting, self); else already_canceled = 1; - __pthread_spin_unlock((pthread_spinlock_t *) &sem->__sem_lock); + __pthread_unlock((struct _pthread_fastlock *) &sem->__sem_lock); if (already_canceled) { __pthread_set_own_extricate_if(self, 0); @@ -235,9 +235,9 @@ int sem_timedwait(sem_t *sem, const struct timespec *abstime) /* __pthread_lock will queue back any spurious restarts that may happen to it. */ - __pthread_lock((pthread_spinlock_t *)&sem->__sem_lock, self); + __pthread_lock((struct _pthread_fastlock *)&sem->__sem_lock, self); was_on_queue = remove_from_queue(&sem->__sem_waiting, self); - __pthread_spin_unlock((pthread_spinlock_t *)&sem->__sem_lock); + __pthread_unlock((struct _pthread_fastlock *)&sem->__sem_lock); if (was_on_queue) { __pthread_set_own_extricate_if(self, 0); diff --git a/linuxthreads/signals.c b/linuxthreads/signals.c index 3a7dd00..452d860 100644 --- a/linuxthreads/signals.c +++ b/linuxthreads/signals.c @@ -57,11 +57,11 @@ int pthread_kill(pthread_t thread, int signo) __pthread_lock(&handle->h_lock, NULL); if (invalid_handle(handle, thread)) { - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); return ESRCH; } pid = handle->h_descr->p_pid; - __pthread_spin_unlock(&handle->h_lock); + __pthread_unlock(&handle->h_lock); if (kill(pid, signo) == -1) return errno; else diff --git a/linuxthreads/spinlock.c b/linuxthreads/spinlock.c index c482d91..50edfa3 100644 --- a/linuxthreads/spinlock.c +++ b/linuxthreads/spinlock.c @@ -36,7 +36,7 @@ This is safe because there are no concurrent __pthread_unlock operations -- only the thread that locked the mutex can unlock it. */ -void internal_function __pthread_lock(pthread_spinlock_t * lock, +void internal_function __pthread_lock(struct _pthread_fastlock * lock, pthread_descr self) { long oldstatus, newstatus; @@ -83,14 +83,8 @@ void internal_function __pthread_lock(pthread_spinlock_t * lock, while (spurious_wakeup_count--) restart(self); } -int __pthread_spin_lock(pthread_spinlock_t * lock) -{ - __pthread_lock (lock, NULL); - return 0; -} -weak_alias (__pthread_spin_lock, pthread_spin_lock) -int __pthread_spin_unlock(pthread_spinlock_t * lock) +int __pthread_unlock(struct _pthread_fastlock * lock) { long oldstatus; pthread_descr thr, * ptr, * maxptr; @@ -151,31 +145,7 @@ again: return 0; } -weak_alias (__pthread_spin_unlock, pthread_spin_unlock) - - -int __pthread_spin_trylock (pthread_spinlock_t *lock) -{ - return __pthread_trylock (lock); -} -weak_alias (__pthread_spin_trylock, pthread_spin_trylock) -int __pthread_spin_init(pthread_spinlock_t *lock, int pshared) -{ - if (pshared != 0) - return ENOSYS; - - __pthread_init_lock (lock); - return 0; -} -weak_alias (__pthread_spin_init, pthread_spin_init) - -int __pthread_spin_destroy(pthread_spinlock_t *lock) -{ - /* Nothing to do. */ - return 0; -} -weak_alias (__pthread_spin_destroy, pthread_spin_destroy) /* Compare-and-swap emulation with a spinlock */ diff --git a/linuxthreads/spinlock.h b/linuxthreads/spinlock.h index 0b4ed9d..96010e4 100644 --- a/linuxthreads/spinlock.h +++ b/linuxthreads/spinlock.h @@ -50,17 +50,17 @@ static inline int compare_and_swap(long * ptr, long oldval, long newval, /* Internal locks */ -extern void internal_function __pthread_lock(pthread_spinlock_t * lock, +extern void internal_function __pthread_lock(struct _pthread_fastlock * lock, pthread_descr self); -extern int __pthread_spin_unlock(pthread_spinlock_t *lock); +extern int __pthread_unlock(struct _pthread_fastlock *lock); -static inline void __pthread_init_lock(pthread_spinlock_t * lock) +static inline void __pthread_init_lock(struct _pthread_fastlock * lock) { lock->__status = 0; lock->__spinlock = 0; } -static inline int __pthread_trylock (pthread_spinlock_t * lock) +static inline int __pthread_trylock (struct _pthread_fastlock * lock) { long oldstatus; diff --git a/linuxthreads/sysdeps/alpha/pspinlock.c b/linuxthreads/sysdeps/alpha/pspinlock.c new file mode 100644 index 0000000..0d871b4 --- /dev/null +++ b/linuxthreads/sysdeps/alpha/pspinlock.c @@ -0,0 +1,109 @@ +/* POSIX spinlock implementation. Alpha version. + Copyright (C) 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <pthread.h> + + +/* This implementation is similar to the one used in the Linux kernel. + But the kernel is byte instructions for the memory access. This is + faster but unusable here. The problem is that only 128 + threads/processes could use the spinlock at the same time. If (by + a design error in the program) a thread/process would hold the + spinlock for a time long enough to accumulate 128 waiting + processes, the next one will find a positive value in the spinlock + and assume it is unlocked. We cannot accept that. */ + +int +__pthread_spin_lock (pthread_spinlock_t *lock) +{ + unsigned int tmp; + asm volatile + ("1: ldl_l %0,%1\n" + " blbs %0,2f\n" + " or %0,1,%0\n" + " stl_c %0,%1\n" + " beq %0,2f\n" + " mb\n" + ".subsection 2\n" + "2: ldl %0,%1\n" + " blbs %0,2b\n" + " br 1b\n" + ".previous" + : "=r" (tmp), "=m" (lock) + : "m" (lock)); + return 0; +} +weak_alias (__pthread_spin_lock, pthread_spin_lock) + + +int +__pthread_spin_trylock (pthread_spinlock_t *lock) +{ + unsigned long int oldval; + unsigned long int temp; + + asm volatile + ("1: ldl_l %0,%1\n" + " and %0,%3,%2\n" + " bne %2,2f\n" + " xor %0,%3,%0\n" + " stl_c %0,%1\n" + " beq %0,3f\n" + " mb\n" + "2:\n" + ".subsection 2\n" + "3: br 1b\n" + ".previous" + : "=&r" (temp), "=m" (*lock), "=&r" (oldval) + : "Ir" (1UL), "m" (*lock)); + + return oldval == 0 ? 0 : EBUSY; +} +weak_alias (__pthread_spin_trylock, pthread_spin_trylock) + + +int +__pthread_spin_unlock (pthread_spinlock_t *lock) +{ + asm volatile ("mb"); + return *lock = 0; +} +weak_alias (__pthread_spin_unlock, pthread_spin_unlock) + + +int +__pthread_spin_init (pthread_spinlock_t *lock, int pshared) +{ + /* We can ignore the `pshared' parameter. Since we are busy-waiting + all processes which can access the memory location `lock' points + to can use the spinlock. */ + *lock = 0; + return 0; +} +weak_alias (__pthread_spin_init, pthread_spin_init) + + +int +__pthread_spin_destroy (pthread_spinlock_t *lock) +{ + /* Nothing to do. */ + return 0; +} +weak_alias (__pthread_spin_destroy, pthread_spin_destroy) diff --git a/linuxthreads/sysdeps/arm/pspinlock.c b/linuxthreads/sysdeps/arm/pspinlock.c new file mode 100644 index 0000000..a56881a --- /dev/null +++ b/linuxthreads/sysdeps/arm/pspinlock.c @@ -0,0 +1,81 @@ +/* POSIX spinlock implementation. Arm version. + Copyright (C) 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <pthread.h> + + +int +__pthread_spin_lock (pthread_spinlock_t *lock) +{ + unsigned int val; + + do + asm volatile ("swp %0, %1, [%2]" + : "=r" (val) + : "0" (1), "r" (lock) + : "memory"); + while (val != 0); + + return 0; +} +weak_alias (__pthread_spin_lock, pthread_spin_lock) + + +int +__pthread_spin_trylock (pthread_spinlock_t *lock) +{ + unsigned int val; + + asm volatile ("swp %0, %1, [%2]" + : "=r" (val) + : "0" (1), "r" (lock) + : "memory"); + + return val ? EBUSY : 0; +} +weak_alias (__pthread_spin_trylock, pthread_spin_trylock) + + +int +__pthread_spin_unlock (pthread_spinlock_t *lock) +{ + return *lock = 0; +} +weak_alias (__pthread_spin_unlock, pthread_spin_unlock) + + +int +__pthread_spin_init (pthread_spinlock_t *lock, int pshared) +{ + /* We can ignore the `pshared' parameter. Since we are busy-waiting + all processes which can access the memory location `lock' points + to can use the spinlock. */ + return *lock = 0; +} +weak_alias (__pthread_spin_init, pthread_spin_init) + + +int +__pthread_spin_destroy (pthread_spinlock_t *lock) +{ + /* Nothing to do. */ + return 0; +} +weak_alias (__pthread_spin_destroy, pthread_spin_destroy) diff --git a/linuxthreads/sysdeps/i386/pspinlock.c b/linuxthreads/sysdeps/i386/pspinlock.c new file mode 100644 index 0000000..426e63a --- /dev/null +++ b/linuxthreads/sysdeps/i386/pspinlock.c @@ -0,0 +1,97 @@ +/* POSIX spinlock implementation. x86 version. + Copyright (C) 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <pthread.h> + + +/* This implementation is similar to the one used in the Linux kernel. + But the kernel is byte instructions for the memory access. This is + faster but unusable here. The problem is that only 128 + threads/processes could use the spinlock at the same time. If (by + a design error in the program) a thread/process would hold the + spinlock for a time long enough to accumulate 128 waiting + processes, the next one will find a positive value in the spinlock + and assume it is unlocked. We cannot accept that. */ + +int +__pthread_spin_lock (pthread_spinlock_t *lock) +{ + asm volatile + ("\n" + "1:\n\t" + "lock; decl %0\n\t" + "js 2f\n\t" + ".section .text.spinlock,\"ax\"\n" + "2:\n\t" + "cmpl $0,%0\n\t" + "rep; nop\n\t" + "jle 2b\n\t" + "jmp 1b\n\t" + ".previous" + : "=m" (*lock)); + return 0; +} +weak_alias (__pthread_spin_lock, pthread_spin_lock) + + +int +__pthread_spin_trylock (pthread_spinlock_t *lock) +{ + int oldval; + + asm volatile + ("xchgl %0,%1" + : "=r" (oldval), "=m" (*lock) + : "0" (0)); + return oldval > 0 ? 0 : EBUSY; +} +weak_alias (__pthread_spin_trylock, pthread_spin_trylock) + + +int +__pthread_spin_unlock (pthread_spinlock_t *lock) +{ + asm volatile + ("movl $1,%0" + : "=m" (*lock)); + return 0; +} +weak_alias (__pthread_spin_unlock, pthread_spin_unlock) + + +int +__pthread_spin_init (pthread_spinlock_t *lock, int pshared) +{ + /* We can ignore the `pshared' parameter. Since we are busy-waiting + all processes which can access the memory location `lock' points + to can use the spinlock. */ + *lock = 1; + return 0; +} +weak_alias (__pthread_spin_init, pthread_spin_init) + + +int +__pthread_spin_destroy (pthread_spinlock_t *lock) +{ + /* Nothing to do. */ + return 0; +} +weak_alias (__pthread_spin_destroy, pthread_spin_destroy) diff --git a/linuxthreads/sysdeps/m68k/pspinlock.c b/linuxthreads/sysdeps/m68k/pspinlock.c new file mode 100644 index 0000000..994adc8 --- /dev/null +++ b/linuxthreads/sysdeps/m68k/pspinlock.c @@ -0,0 +1,81 @@ +/* POSIX spinlock implementation. M68k version. + Copyright (C) 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <pthread.h> + + +int +__pthread_spin_lock (pthread_spinlock_t *lock) +{ + unsigned int val; + + do + asm volatile ("tas %1; sne %0" + : "=dm" (val), "=m" (*lock) + : "m" (*lock) + : "cc"); + while (val); + + return 0; +} +weak_alias (__pthread_spin_lock, pthread_spin_lock) + + +int +__pthread_spin_trylock (pthread_spinlock_t *lock) +{ + unsigned int val; + + asm volatile ("tas %1; sne %0" + : "=dm" (val), "=m" (*lock) + : "m" (*lock) + : "cc"); + + return val ? EBUSY : 0; +} +weak_alias (__pthread_spin_trylock, pthread_spin_trylock) + + +int +__pthread_spin_unlock (pthread_spinlock_t *lock) +{ + return *lock = 0; +} +weak_alias (__pthread_spin_unlock, pthread_spin_unlock) + + +int +__pthread_spin_init (pthread_spinlock_t *lock, int pshared) +{ + /* We can ignore the `pshared' parameter. Since we are busy-waiting + all processes which can access the memory location `lock' points + to can use the spinlock. */ + return *lock = 0; +} +weak_alias (__pthread_spin_init, pthread_spin_init) + + +int +__pthread_spin_destroy (pthread_spinlock_t *lock) +{ + /* Nothing to do. */ + return 0; +} +weak_alias (__pthread_spin_destroy, pthread_spin_destroy) diff --git a/linuxthreads/sysdeps/mips/pspinlock.c b/linuxthreads/sysdeps/mips/pspinlock.c new file mode 100644 index 0000000..d6cda21 --- /dev/null +++ b/linuxthreads/sysdeps/mips/pspinlock.c @@ -0,0 +1,66 @@ +/* POSIX spinlock implementation. MIPS version. + Copyright (C) 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <pthread.h> + + +int +__pthread_spin_lock (pthread_spinlock_t *lock) +{ + XXX +} +weak_alias (__pthread_spin_lock, pthread_spin_lock) + + +int +__pthread_spin_trylock (pthread_spinlock_t *lock) +{ + XXX +} +weak_alias (__pthread_spin_trylock, pthread_spin_trylock) + + +int +__pthread_spin_unlock (pthread_spinlock_t *lock) +{ + XXX +} +weak_alias (__pthread_spin_unlock, pthread_spin_unlock) + + +int +__pthread_spin_init (pthread_spinlock_t *lock, int pshared) +{ + /* We can ignore the `pshared' parameter. Since we are busy-waiting + all processes which can access the memory location `lock' points + to can use the spinlock. */ + XXX + return 0; +} +weak_alias (__pthread_spin_init, pthread_spin_init) + + +int +__pthread_spin_destroy (pthread_spinlock_t *lock) +{ + /* Nothing to do. */ + return 0; +} +weak_alias (__pthread_spin_destroy, pthread_spin_destroy) diff --git a/linuxthreads/sysdeps/powerpc/pspinlock.c b/linuxthreads/sysdeps/powerpc/pspinlock.c new file mode 100644 index 0000000..6858ee1 --- /dev/null +++ b/linuxthreads/sysdeps/powerpc/pspinlock.c @@ -0,0 +1,66 @@ +/* POSIX spinlock implementation. PowerPC version. + Copyright (C) 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <pthread.h> + + +int +__pthread_spin_lock (pthread_spinlock_t *lock) +{ + XXX +} +weak_alias (__pthread_spin_lock, pthread_spin_lock) + + +int +__pthread_spin_trylock (pthread_spinlock_t *lock) +{ + XXX +} +weak_alias (__pthread_spin_trylock, pthread_spin_trylock) + + +int +__pthread_spin_unlock (pthread_spinlock_t *lock) +{ + XXX +} +weak_alias (__pthread_spin_unlock, pthread_spin_unlock) + + +int +__pthread_spin_init (pthread_spinlock_t *lock, int pshared) +{ + /* We can ignore the `pshared' parameter. Since we are busy-waiting + all processes which can access the memory location `lock' points + to can use the spinlock. */ + XXX + return 0; +} +weak_alias (__pthread_spin_init, pthread_spin_init) + + +int +__pthread_spin_destroy (pthread_spinlock_t *lock) +{ + /* Nothing to do. */ + return 0; +} +weak_alias (__pthread_spin_destroy, pthread_spin_destroy) diff --git a/linuxthreads/sysdeps/pthread/bits/pthreadtypes.h b/linuxthreads/sysdeps/pthread/bits/pthreadtypes.h index a487831..99e56d2 100644 --- a/linuxthreads/sysdeps/pthread/bits/pthreadtypes.h +++ b/linuxthreads/sysdeps/pthread/bits/pthreadtypes.h @@ -23,11 +23,11 @@ #include <bits/sched.h> /* Fast locks (not abstract because mutexes and conditions aren't abstract). */ -typedef struct +struct _pthread_fastlock { long int __status; /* "Free" or "taken" or head of waiting list */ int __spinlock; /* For compare-and-swap emulation */ -} pthread_spinlock_t; +}; #ifndef _PTHREAD_DESCR_DEFINED /* Thread descriptors */ @@ -54,7 +54,7 @@ typedef struct /* Conditions (not abstract because of PTHREAD_COND_INITIALIZER */ typedef struct { - pthread_spinlock_t __c_lock; /* Protect against concurrent access */ + struct _pthread_fastlock __c_lock; /* Protect against concurrent access */ _pthread_descr __c_waiting; /* Threads waiting on this condition */ } pthread_cond_t; @@ -78,7 +78,7 @@ typedef struct int __m_count; /* Depth of recursive locking */ _pthread_descr __m_owner; /* Owner thread (if recursive or errcheck) */ int __m_kind; /* Mutex kind: fast, recursive or errcheck */ - pthread_spinlock_t __m_lock; /* Underlying fast lock */ + struct _pthread_fastlock __m_lock; /* Underlying fast lock */ } pthread_mutex_t; @@ -97,7 +97,7 @@ typedef int pthread_once_t; /* Read-write locks. */ typedef struct _pthread_rwlock_t { - pthread_spinlock_t __rw_lock; /* Lock to guarantee mutual exclusion */ + struct _pthread_fastlock __rw_lock; /* Lock to guarantee mutual exclusion */ int __rw_readers; /* Number of readers */ _pthread_descr __rw_writer; /* Identity of writer, or NULL if none */ _pthread_descr __rw_read_waiting; /* Threads waiting for reading */ @@ -115,6 +115,11 @@ typedef struct } pthread_rwlockattr_t; #endif +#ifdef __USE_XOPEN2K +/* POSIX spinlock data type. */ +typedef volatile int pthread_spinlock_t; +#endif + /* Thread identifiers */ typedef unsigned long int pthread_t; diff --git a/linuxthreads/sysdeps/sparc/sparc32/pspinlock.c b/linuxthreads/sysdeps/sparc/sparc32/pspinlock.c new file mode 100644 index 0000000..ff72ff0 --- /dev/null +++ b/linuxthreads/sysdeps/sparc/sparc32/pspinlock.c @@ -0,0 +1,66 @@ +/* POSIX spinlock implementation. SPARC32 version. + Copyright (C) 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <pthread.h> + + +int +__pthread_spin_lock (pthread_spinlock_t *lock) +{ + XXX +} +weak_alias (__pthread_spin_lock, pthread_spin_lock) + + +int +__pthread_spin_trylock (pthread_spinlock_t *lock) +{ + XXX +} +weak_alias (__pthread_spin_trylock, pthread_spin_trylock) + + +int +__pthread_spin_unlock (pthread_spinlock_t *lock) +{ + XXX +} +weak_alias (__pthread_spin_unlock, pthread_spin_unlock) + + +int +__pthread_spin_init (pthread_spinlock_t *lock, int pshared) +{ + /* We can ignore the `pshared' parameter. Since we are busy-waiting + all processes which can access the memory location `lock' points + to can use the spinlock. */ + XXX + return 0; +} +weak_alias (__pthread_spin_init, pthread_spin_init) + + +int +__pthread_spin_destroy (pthread_spinlock_t *lock) +{ + /* Nothing to do. */ + return 0; +} +weak_alias (__pthread_spin_destroy, pthread_spin_destroy) diff --git a/linuxthreads/sysdeps/sparc/sparc64/pspinlock.c b/linuxthreads/sysdeps/sparc/sparc64/pspinlock.c new file mode 100644 index 0000000..83edb08 --- /dev/null +++ b/linuxthreads/sysdeps/sparc/sparc64/pspinlock.c @@ -0,0 +1,66 @@ +/* POSIX spinlock implementation. SPARC64 version. + Copyright (C) 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <pthread.h> + + +int +__pthread_spin_lock (pthread_spinlock_t *lock) +{ + XXX +} +weak_alias (__pthread_spin_lock, pthread_spin_lock) + + +int +__pthread_spin_trylock (pthread_spinlock_t *lock) +{ + XXX +} +weak_alias (__pthread_spin_trylock, pthread_spin_trylock) + + +int +__pthread_spin_unlock (pthread_spinlock_t *lock) +{ + XXX +} +weak_alias (__pthread_spin_unlock, pthread_spin_unlock) + + +int +__pthread_spin_init (pthread_spinlock_t *lock, int pshared) +{ + /* We can ignore the `pshared' parameter. Since we are busy-waiting + all processes which can access the memory location `lock' points + to can use the spinlock. */ + XXX + return 0; +} +weak_alias (__pthread_spin_init, pthread_spin_init) + + +int +__pthread_spin_destroy (pthread_spinlock_t *lock) +{ + /* Nothing to do. */ + return 0; +} +weak_alias (__pthread_spin_destroy, pthread_spin_destroy) |