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authorChaz Brown <iamparadox@netscape.net>2009-09-13 06:18:26 -0400
committerChaz Brown <iamparadox@netscape.net>2009-09-13 06:18:26 -0400
commita02bb96290c09658c0f54e9fa9828eafe778f079 (patch)
treeee7443cea56991c9ba56bc576d8ec8539dd079b4 /dep/src/zthread/posix/ConditionRecursiveLock.h
parente08ddd3096660c871d1b5acc03889c9be3e8ada3 (diff)
Remove the remaining obsolete Zthread code Part3 Really this time.
--HG-- branch : trunk
Diffstat (limited to 'dep/src/zthread/posix/ConditionRecursiveLock.h')
-rw-r--r--dep/src/zthread/posix/ConditionRecursiveLock.h147
1 files changed, 0 insertions, 147 deletions
diff --git a/dep/src/zthread/posix/ConditionRecursiveLock.h b/dep/src/zthread/posix/ConditionRecursiveLock.h
deleted file mode 100644
index bbf77da833b..00000000000
--- a/dep/src/zthread/posix/ConditionRecursiveLock.h
+++ /dev/null
@@ -1,147 +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 "zthread/NonCopyable.h"
-#include <pthread.h>
-#include <errno.h>
-#include <assert.h>
-
-namespace ZThread {
-
-/**
- * @class FastRecursiveLock
- *
- * @author Eric Crahen <http://www.code-foo.com>
- * @date <2003-07-16T23:28:37-0400>
- * @version 2.2.0
- *
- * This is an implementation of a FastRecursiveLock for any vannila
- * POSIX system. It is based on a condition variable and a mutex;
- * because of this it is important to not that its waiting properties
- * are not the same as other mutex implementations that generally
- * based on spin locks. Under high contention, this implementation may
- * be preferable to a spin lock, although refactoring the design of
- * code that puts a mutex under alot of preasure may be worth investigating.
- */
-class FastRecursiveLock : private NonCopyable {
-
- //! Serialize state
- pthread_mutex_t _mtx;
-
- //! Wait for lock
- pthread_cond_t _cond;
-
- //! Owner
- pthread_t _owner;
-
- //! Count
- volatile unsigned int _count;
-
-public:
-
- inline FastRecursiveLock() : _owner(0), _count(0) {
-
- pthread_mutex_init(&_mtx, 0);
- if(pthread_cond_init(&_cond, 0) != 0) {
- assert(0);
- }
-
- }
-
- inline ~FastRecursiveLock() {
-
- pthread_mutex_destroy(&_mtx);
- if(pthread_cond_destroy(&_cond) != 0) {
- assert(0);
- }
-
- }
-
- inline void acquire() {
-
- pthread_t self = pthread_self();
- pthread_mutex_lock(&_mtx);
-
- // If the caller does not own the lock, wait until there is no owner
- if(_owner != 0 && !pthread_equal(_owner, self)) {
-
- int status = 0;
- do { // ignore signals
- status = pthread_cond_wait(&_cond, &_mtx);
- } while(status == EINTR && _owner == 0);
-
- }
-
- _owner = self;
- _count++;
-
- pthread_mutex_unlock(&_mtx);
-
- }
-
- inline bool tryAcquire(unsigned long timeout=0) {
-
- pthread_t self = pthread_self();
- pthread_mutex_lock(&_mtx);
-
- // If the caller owns the lock, or there is no owner update the count
- bool success = (_owner == 0 || pthread_equal(_owner, self));
- if(success) {
-
- _owner = self;
- _count++;
-
- }
-
- pthread_mutex_unlock(&_mtx);
-
- return success;
-
- }
-
- inline void release() {
-
- assert(pthread_equal(_owner, pthread_self()));
-
- pthread_mutex_lock(&_mtx);
- if(--_count == 0) {
-
- _owner = 0;
- pthread_cond_signal(&_cond);
-
- }
-
- pthread_mutex_unlock(&_mtx);
-
- }
-
-
-}; /* FastRecursiveLock */
-
-
-} // namespace ZThread
-
-#endif
-