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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
/*
* File: pripcsem.c
*
* Description: implements the named semaphores API in prsemipc.h
* for classic NSPR. If _PR_HAVE_NAMED_SEMAPHORES is not defined,
* the named semaphore functions all fail with the error code
* PR_NOT_IMPLEMENTED_ERROR.
*/
#include "primpl.h"
#ifdef _PR_PTHREADS
#error "This file should not be compiled for the pthreads version"
#else
#ifndef _PR_HAVE_NAMED_SEMAPHORES
PRSem * _PR_MD_OPEN_SEMAPHORE(
const char *osname, PRIntn flags, PRIntn mode, PRUintn value)
{
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return NULL;
}
PRStatus _PR_MD_WAIT_SEMAPHORE(PRSem *sem)
{
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return PR_FAILURE;
}
PRStatus _PR_MD_POST_SEMAPHORE(PRSem *sem)
{
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return PR_FAILURE;
}
PRStatus _PR_MD_CLOSE_SEMAPHORE(PRSem *sem)
{
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return PR_FAILURE;
}
PRStatus _PR_MD_DELETE_SEMAPHORE(const char *osname)
{
PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);
return PR_FAILURE;
}
#endif /* !_PR_HAVE_NAMED_SEMAPHORES */
PR_IMPLEMENT(PRSem *) PR_OpenSemaphore(
const char *name, PRIntn flags, PRIntn mode, PRUintn value)
{
char osname[PR_IPC_NAME_SIZE];
if (!_pr_initialized) _PR_ImplicitInitialization();
if (_PR_MakeNativeIPCName(name, osname, sizeof(osname), _PRIPCSem)
== PR_FAILURE) {
return NULL;
}
return _PR_MD_OPEN_SEMAPHORE(osname, flags, mode, value);
}
PR_IMPLEMENT(PRStatus) PR_WaitSemaphore(PRSem *sem)
{
return _PR_MD_WAIT_SEMAPHORE(sem);
}
PR_IMPLEMENT(PRStatus) PR_PostSemaphore(PRSem *sem)
{
return _PR_MD_POST_SEMAPHORE(sem);
}
PR_IMPLEMENT(PRStatus) PR_CloseSemaphore(PRSem *sem)
{
return _PR_MD_CLOSE_SEMAPHORE(sem);
}
PR_IMPLEMENT(PRStatus) PR_DeleteSemaphore(const char *name)
{
char osname[PR_IPC_NAME_SIZE];
if (!_pr_initialized) _PR_ImplicitInitialization();
if (_PR_MakeNativeIPCName(name, osname, sizeof(osname), _PRIPCSem)
== PR_FAILURE) {
return PR_FAILURE;
}
return _PR_MD_DELETE_SEMAPHORE(osname);
}
#endif /* _PR_PTHREADS */
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