diff options
Diffstat (limited to 'nsprpub/pr/src/bthreads/btsem.c')
-rw-r--r-- | nsprpub/pr/src/bthreads/btsem.c | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/nsprpub/pr/src/bthreads/btsem.c b/nsprpub/pr/src/bthreads/btsem.c deleted file mode 100644 index 011ee6bd3..000000000 --- a/nsprpub/pr/src/bthreads/btsem.c +++ /dev/null @@ -1,98 +0,0 @@ -/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ -/* This Source Code Form is subject to the terms of the Mozilla Public - * License, v. 2.0. If a copy of the MPL was not distributed with this - * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ - -#include <kernel/OS.h> - -#include "primpl.h" - -/* -** Create a new semaphore object. -*/ -PR_IMPLEMENT(PRSemaphore*) - PR_NewSem (PRUintn value) -{ - PRSemaphore *semaphore; - - if (!_pr_initialized) _PR_ImplicitInitialization(); - - semaphore = PR_NEWZAP(PRSemaphore); - if (NULL != semaphore) { - if ((semaphore->sem = create_sem(value, "nspr_sem")) < B_NO_ERROR) - return NULL; - else - return semaphore; - } - return NULL; -} - -/* -** Destroy the given semaphore object. -** -*/ -PR_IMPLEMENT(void) - PR_DestroySem (PRSemaphore *sem) -{ - status_t result; - - PR_ASSERT(sem != NULL); - result = delete_sem(sem->sem); - PR_ASSERT(result == B_NO_ERROR); - PR_DELETE(sem); -} - -/* -** Wait on a Semaphore. -** -** This routine allows a calling thread to wait or proceed depending upon -** the state of the semahore sem. The thread can proceed only if the -** counter value of the semaphore sem is currently greater than 0. If the -** value of semaphore sem is positive, it is decremented by one and the -** routine returns immediately allowing the calling thread to continue. If -** the value of semaphore sem is 0, the calling thread blocks awaiting the -** semaphore to be released by another thread. -** -** This routine can return PR_PENDING_INTERRUPT if the waiting thread -** has been interrupted. -*/ -PR_IMPLEMENT(PRStatus) - PR_WaitSem (PRSemaphore *sem) -{ - PR_ASSERT(sem != NULL); - if (acquire_sem(sem->sem) == B_NO_ERROR) - return PR_SUCCESS; - else - return PR_FAILURE; -} - -/* -** This routine increments the counter value of the semaphore. If other -** threads are blocked for the semaphore, then the scheduler will -** determine which ONE thread will be unblocked. -*/ -PR_IMPLEMENT(void) - PR_PostSem (PRSemaphore *sem) -{ - status_t result; - - PR_ASSERT(sem != NULL); - result = release_sem_etc(sem->sem, 1, B_DO_NOT_RESCHEDULE); - PR_ASSERT(result == B_NO_ERROR); -} - -/* -** Returns the value of the semaphore referenced by sem without affecting -** the state of the semaphore. The value represents the semaphore value -** at the time of the call, but may not be the actual value when the -** caller inspects it. -*/ -PR_IMPLEMENT(PRUintn) - PR_GetValueSem (PRSemaphore *sem) -{ - sem_info info; - - PR_ASSERT(sem != NULL); - get_sem_info(sem->sem, &info); - return info.count; -} |