diff options
Diffstat (limited to 'trunk/qpid/cpp/src/qpid/sys/Semaphore.h')
-rw-r--r-- | trunk/qpid/cpp/src/qpid/sys/Semaphore.h | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/trunk/qpid/cpp/src/qpid/sys/Semaphore.h b/trunk/qpid/cpp/src/qpid/sys/Semaphore.h deleted file mode 100644 index 9d70f89aeb..0000000000 --- a/trunk/qpid/cpp/src/qpid/sys/Semaphore.h +++ /dev/null @@ -1,79 +0,0 @@ -#ifndef _sys_Semaphore_h -#define _sys_Semaphore_h - -/* - * - * Copyright (c) 2006 The Apache Software Foundation - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - * - */ - -#include "qpid/sys/Monitor.h" - -namespace qpid { -namespace sys { - -class Semaphore -{ -public: - Semaphore(uint c = 1) : count(c) {} - - void lock() { acquire(); } - void unlock() { release(); } - bool trylock() { return tryAcquire(); } - - bool tryAcquire() - { - Monitor::ScopedLock l(monitor); - if (count) { - count--; - return true; - } else { - return false; - } - } - - void acquire() - { - Monitor::ScopedLock l(monitor); - while (count == 0) monitor.wait(); - count--; - } - - void release(uint n) - { - Monitor::ScopedLock l(monitor); - if (count==0) monitor.notifyAll(); - count+=n; - } - - void release() - { - release(1); - } - - void forceLock() - { - Monitor::ScopedLock l(monitor); - count = 0; - } - -private: - Monitor monitor; - uint count; -}; - -}} - -#endif /*!_sys_Semaphore_h*/ |