+++ /dev/null
-/**
- * @file mprThread.c
- * @brief Mbedthis Portable Runtime Base Thread Locking Support
- */
-
-/*
- * @copy default
- *
- * Copyright (c) Mbedthis Software LLC, 2003-2006. All Rights Reserved.
- *
- * This software is distributed under commercial and open source licenses.
- * You may use the GPL open source license described below or you may acquire
- * a commercial license from Mbedthis Software. You agree to be fully bound
- * by the terms of either license. Consult the LICENSE.TXT distributed with
- * this software for full details.
- *
- * This software is open source; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version. See the GNU General Public License for more
- * details at: http://www.mbedthis.com/downloads/gplLicense.html
- *
- * This program is distributed WITHOUT ANY WARRANTY; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * This GPL license does NOT permit incorporating this software into
- * proprietary programs. If you are unable to comply with the GPL, you must
- * acquire a commercial license to use this software. Commercial licenses
- * for this software and support services are available from Mbedthis
- * Software at http://www.mbedthis.com
- *
- * @end
- */
-
-#include "mpr.h"
-
-#if BLD_FEATURE_MULTITHREAD
-/************************************ Code ************************************/
-
-void mprInitThreads(MprApp *app)
-{
- mprAssert(app);
-
- if (app->globalLock == 0) {
- app->globalLock = mprCreateLock(app);
- app->allocLock = mprCreateLock(app);
- }
-}
-
-/******************************************************************************/
-
-void mprTermThreads(MprApp *app)
-{
- mprAssert(app);
-
- if (app->globalLock) {
- mprDestroyLock(app->globalLock);
- app->globalLock = 0;
- }
- if (app->allocLock) {
- MprLock *lock = app->allocLock;
- app->allocLock = 0;
- mprDestroyLock(lock);
- }
-}
-
-/******************************************************************************/
-
-MprLock *mprCreateLock(MprCtx ctx)
-{
- MprLock *lock;
-
- mprAssert(ctx);
-
- lock = mprAllocType(ctx, MprLock);
-
-#if BLD_HOST_UNIX
- pthread_mutexattr_t attr;
-
- pthread_mutexattr_init(&attr);
- pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE_NP);
- pthread_mutex_init(&lock->cs, &attr);
- pthread_mutexattr_destroy(&attr);
-#elif WIN
- InitializeCriticalSectionAndSpinCount(&lock->cs, 5000);
-#elif VXWORKS
- lock->cs = semMCreate(SEM_Q_PRIORITY | SEM_DELETE_SAFE |
- SEM_INVERSION_SAFE);
- if (lock->cs == 0) {
- mprAssert(0);
- mprFree(lock);
- return 0;
- }
-#endif
- return lock;
-}
-
-/******************************************************************************/
-/*
- * Destroy a lock. Must be locked on entrance.
- */
-
-void mprDestroyLock(MprLock *lock)
-{
- mprAssert(lock);
- if (lock == 0) {
- return;
- }
-
-#if BLD_HOST_UNIX
- pthread_mutex_unlock(&lock->cs);
- pthread_mutex_destroy(&lock->cs);
-#elif WIN
- DeleteCriticalSection(&lock->cs);
-#elif VXWORKS
- semDelete(lock->cs);
-#endif
- mprFree(lock);
-}
-
-/******************************************************************************/
-/*
- * Lock a mutex
- */
-
-void mprLock(MprLock *lock)
-{
- /*
- * OPT -- Do this just so we can allocate MprApp before we have created its
- * lock. Should remove this test here and in mprUnlock.
- */
- if (lock == 0) {
- return;
- }
-
-#if BLD_HOST_UNIX
- pthread_mutex_lock(&lock->cs);
-#elif WIN
- EnterCriticalSection(&lock->cs);
-#elif VXWORKS
- semTake(lock->cs, WAIT_FOREVER);
-#endif
-}
-
-/******************************************************************************/
-/*
- * Try to attain a lock. Do not block!
- */
-
-int mprTryLock(MprLock *lock)
-{
- mprAssert(lock);
-
-#if BLD_HOST_UNIX
- {
- int err;
-
- if ((err = pthread_mutex_trylock(&lock->cs)) != 0) {
- if (err == EBUSY) {
- return MPR_ERR_BUSY;
- } else {
- return MPR_ERR_CANT_ACCESS;
- }
- }
- return 0;
- }
-#elif WIN
- if (TryEnterCriticalSection(&lock->cs) == 0) {
- return MPR_ERR_BUSY;
- }
-#elif VXWORKS
- {
- int rc;
-
- rc = semTake(cs, NO_WAIT);
- if (rc == -1) {
- mprAssert(0);
- }
- if (rc == S_objLib_OBJ_UNAVAILABLE) {
- return MPR_ERR_BUSY;
- } else {
- return MPR_ERR_CANT_ACCESS;
- }
- /* Success */
- return 0;
- }
-#endif
- return 0;
-}
-
-/******************************************************************************/
-/*
- * Unlock.
- */
-
-void mprUnlock(MprLock *lock)
-{
- if (lock == 0) {
- return;
- }
-
-#if BLD_HOST_UNIX
- pthread_mutex_unlock(&lock->cs);
-#elif WIN
- LeaveCriticalSection(&lock->cs);
-#elif VXWORKS
- semGive(lock->cs);
-#endif
-}
-
-/******************************************************************************/
-/*
- * Big global lock. Avoid using this.
- */
-
-void mprGlobalLock(MprCtx ctx)
-{
- MprApp *app;
-
- app = mprGetApp(ctx);
- mprAssert(app);
-
- if (app && app->globalLock) {
- mprLock(app->globalLock);
- }
-}
-
-/******************************************************************************/
-
-void mprGlobalUnlock(MprCtx ctx)
-{
- MprApp *app;
-
- app = mprGetApp(ctx);
- mprAssert(app);
-
- if (app && app->globalLock) {
- mprUnlock(app->globalLock);
- }
-}
-
-/******************************************************************************/
-
-int mprGetCurrentThreadID()
-{
-#if BLD_HOST_UNIX
- return (int) pthread_self();
-#elif WIN
- return GetCurrentThreadId();
-#elif VXWORKS
- return (int) pthread_self();
-#endif
-}
-
-/******************************************************************************/
-#endif /* BLD_FEATURE_MULTITHREAD */
-
-/*
- * Local variables:
- * tab-width: 4
- * c-basic-offset: 4
- * End:
- * vim:tw=78
- * vim600: sw=4 ts=4 fdm=marker
- * vim<600: sw=4 ts=4
- */
git.samba.org / bbaumbach / samba-autobuild / .git / blobdiff