diff options
author | Chaz Brown <iamparadox@netscape.net> | 2009-09-13 06:18:26 -0400 |
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committer | Chaz Brown <iamparadox@netscape.net> | 2009-09-13 06:18:26 -0400 |
commit | a02bb96290c09658c0f54e9fa9828eafe778f079 (patch) | |
tree | ee7443cea56991c9ba56bc576d8ec8539dd079b4 /dep/src/zthread/vanilla/SimpleRecursiveLock.h | |
parent | e08ddd3096660c871d1b5acc03889c9be3e8ada3 (diff) |
Remove the remaining obsolete Zthread code Part3 Really this time.
--HG--
branch : trunk
Diffstat (limited to 'dep/src/zthread/vanilla/SimpleRecursiveLock.h')
-rw-r--r-- | dep/src/zthread/vanilla/SimpleRecursiveLock.h | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/dep/src/zthread/vanilla/SimpleRecursiveLock.h b/dep/src/zthread/vanilla/SimpleRecursiveLock.h deleted file mode 100644 index ecd1a403ce8..00000000000 --- a/dep/src/zthread/vanilla/SimpleRecursiveLock.h +++ /dev/null @@ -1,131 +0,0 @@ -/* - * 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 __ZTFASTRECURSIVELOCK_H__ -#define __ZTFASTRECURSIVELOCK_H__ - -#include "../FastLock.h" -#include "../ThreadOps.h" -#include <assert.h> - -namespace ZThread { - -/** - * @class FastRecursiveLock - * - * @author Eric Crahen <http://www.code-foo.com> - * @date <2003-07-16T23:30:59-0400> - * @version 2.2.8 - * - * This implementation of a FastRecursiveLock uses the which ever FastLock - * that is selected to create a recursive spin lock. - */ -class FastRecursiveLock : private NonCopyable { - - FastLock _lock; - - ThreadOps _owner; - - volatile unsigned int _count; - -public: - - inline FastRecursiveLock() : _owner(ThreadOps::INVALID), _count(0) {} - - inline ~FastRecursiveLock() { - - assert(_owner == ThreadOps::INVALID); - assert(_count == 0); - - } - - inline void acquire() { - - ThreadOps self(ThreadOps::self()); - bool wasLocked = false; - - do { - - _lock.acquire(); - - // If there is no owner, or the owner is the caller - // update the count - if(_owner == ThreadOps::INVALID || _owner == self) { - - _owner = self; - _count++; - - wasLocked = true; - - } - - _lock.release(); - - } while(!wasLocked); - - assert(_owner == ThreadOps::self()); - - } - - inline void release() { - - assert(_owner == ThreadOps::self()); - - _lock.acquire(); - - if(--_count == 0) - _owner = ThreadOps::INVALID; - - _lock.release(); - - } - - inline bool tryAcquire(unsigned long timeout=0) { - - ThreadOps self(ThreadOps::self()); - bool wasLocked = false; - - _lock.acquire(); - - if(_owner == ThreadOps::INVALID || _owner == self) { - - _owner = self; - _count++; - - wasLocked = true; - - } - - _lock.release(); - - assert(!wasLocked || _owner == ThreadOps::self()); - return wasLocked; - - } - -}; /* FastRecursiveLock */ - - -} // namespace ZThread - -#endif - |