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