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-rw-r--r--dep/src/zthread/macos/FastLock.h140
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diff --git a/dep/src/zthread/macos/FastLock.h b/dep/src/zthread/macos/FastLock.h
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-/*
- * Copyright (c) 2005, Eric Crahen
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is furnished
- * to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- */
-
-#ifndef __ZTFASTLOCK_H__
-#define __ZTFASTLOCK_H__
-
-#include "zthread/NonCopyable.h"
-#include "zthread/Exceptions.h"
-
-#include <assert.h>
-#include <CoreServices/CoreServices.h>
-//#include <Multiprocessing.h>
-
-namespace ZThread {
-
-/**
- * @class FastLock
- *
- * @author Eric Crahen <http://www.code-foo.com>
- * @date <2003-07-16T23:25:31-0400>
- * @version 2.1.6
- *
- */
-class FastLock : private NonCopyable {
-
- MPCriticalRegionID _mtx;
-
- public:
-
- /**
- * Create a new FastLock. No safety or state checks are performed.
- *
- * @exception Initialization_Exception - not thrown
- */
- inline FastLock() {
-
- // Apple TN1071
- static bool init = MPLibraryIsLoaded();
-
- if(!init || MPCreateCriticalRegion(&_mtx) != noErr) {
- assert(0);
- throw Initialization_Exception();
- }
-
- }
-
- /**
- * Destroy a FastLock. No safety or state checks are performed.
- */
- inline ~FastLock() throw () {
-
- OSStatus status = MPDeleteCriticalRegion(_mtx);
- if(status != noErr)
- assert(false);
-
- }
-
- /**
- * Acquire an exclusive lock. No safety or state checks are performed.
- *
- * @exception Synchronization_Exception - not thrown
- */
- inline void acquire() {
-
- if(MPEnterCriticalRegion(_mtx, kDurationForever) != noErr)
- throw Synchronization_Exception();
-
- }
-
- /**
- * Try to acquire an exclusive lock. No safety or state checks are performed.
- * This function returns immediately regardless of the value of the timeout
- *
- * @param timeout Unused
- * @return bool
- * @exception Synchronization_Exception - not thrown
- */
- inline bool tryAcquire(unsigned long timeout=0) {
-
- OSStatus status =
- MPEnterCriticalRegion(_mtx, kDurationMillisecond * timeout);
-
- switch(status) {
- case kMPTimeoutErr:
- return false;
-
- case noErr:
- return true;
-
- }
-
- assert(0);
- throw Synchronization_Exception();
-
- }
-
- /**
- * Release an exclusive lock. No safety or state checks are performed.
- * The caller should have already acquired the lock, and release it
- * only once.
- *
- * @exception Synchronization_Exception - not thrown
- */
- inline void release() {
-
- if(MPExitCriticalRegion(_mtx) != noErr)
- throw Synchronization_Exception();
-
- }
-
-
-}; /* FastLock */
-
-
-};
-
-#endif
-
-
-
-