michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /*
michael@0:  * File: pripcsem.c
michael@0:  *
michael@0:  * Description: implements the named semaphores API in prsemipc.h
michael@0:  * for classic NSPR.  If _PR_HAVE_NAMED_SEMAPHORES is not defined,
michael@0:  * the named semaphore functions all fail with the error code
michael@0:  * PR_NOT_IMPLEMENTED_ERROR.
michael@0:  */
michael@0: 
michael@0: #include "primpl.h"
michael@0: 
michael@0: #ifdef _PR_PTHREADS
michael@0: 
michael@0: #error "This file should not be compiled for the pthreads version"
michael@0: 
michael@0: #else
michael@0: 
michael@0: #ifndef _PR_HAVE_NAMED_SEMAPHORES
michael@0: 
michael@0: PRSem * _PR_MD_OPEN_SEMAPHORE(
michael@0:     const char *osname, PRIntn flags, PRIntn mode, PRUintn value)
michael@0: {
michael@0:     PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
michael@0:     return NULL;
michael@0: }
michael@0: 
michael@0: PRStatus _PR_MD_WAIT_SEMAPHORE(PRSem *sem)
michael@0: {
michael@0:     PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
michael@0:     return PR_FAILURE;
michael@0: }
michael@0: 
michael@0: PRStatus _PR_MD_POST_SEMAPHORE(PRSem *sem)
michael@0: {
michael@0:     PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
michael@0:     return PR_FAILURE;
michael@0: }
michael@0: 
michael@0: PRStatus _PR_MD_CLOSE_SEMAPHORE(PRSem *sem)
michael@0: {
michael@0:     PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
michael@0:     return PR_FAILURE;
michael@0: }
michael@0: 
michael@0: PRStatus _PR_MD_DELETE_SEMAPHORE(const char *osname)
michael@0: {
michael@0:     PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
michael@0:     return PR_FAILURE;
michael@0: }
michael@0: 
michael@0: #endif /* !_PR_HAVE_NAMED_SEMAPHORES */
michael@0: 
michael@0: PR_IMPLEMENT(PRSem *) PR_OpenSemaphore(
michael@0:     const char *name, PRIntn flags, PRIntn mode, PRUintn value)
michael@0: {
michael@0:     char osname[PR_IPC_NAME_SIZE];
michael@0: 
michael@0:     if (!_pr_initialized) _PR_ImplicitInitialization();
michael@0:     if (_PR_MakeNativeIPCName(name, osname, sizeof(osname), _PRIPCSem)
michael@0:             == PR_FAILURE) {
michael@0:         return NULL;
michael@0:     }
michael@0:     return _PR_MD_OPEN_SEMAPHORE(osname, flags, mode, value);
michael@0: }
michael@0: 
michael@0: PR_IMPLEMENT(PRStatus) PR_WaitSemaphore(PRSem *sem)
michael@0: {
michael@0:     return _PR_MD_WAIT_SEMAPHORE(sem);
michael@0: }
michael@0: 
michael@0: PR_IMPLEMENT(PRStatus) PR_PostSemaphore(PRSem *sem)
michael@0: {
michael@0:     return _PR_MD_POST_SEMAPHORE(sem);
michael@0: }
michael@0: 
michael@0: PR_IMPLEMENT(PRStatus) PR_CloseSemaphore(PRSem *sem)
michael@0: {
michael@0:     return _PR_MD_CLOSE_SEMAPHORE(sem);
michael@0: }
michael@0: 
michael@0: PR_IMPLEMENT(PRStatus) PR_DeleteSemaphore(const char *name)
michael@0: {
michael@0:     char osname[PR_IPC_NAME_SIZE];
michael@0: 
michael@0:     if (!_pr_initialized) _PR_ImplicitInitialization();
michael@0:     if (_PR_MakeNativeIPCName(name, osname, sizeof(osname), _PRIPCSem)
michael@0:             == PR_FAILURE) {
michael@0:         return PR_FAILURE;
michael@0:     }
michael@0:     return _PR_MD_DELETE_SEMAPHORE(osname);
michael@0: }
michael@0: 
michael@0: #endif /* _PR_PTHREADS */