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Diffstat (limited to 'sca-cpp/branches/cpp-contrib/contrib/runtime/core/src/tuscany/sca/util/Queue.cpp')
| -rw-r--r-- | sca-cpp/branches/cpp-contrib/contrib/runtime/core/src/tuscany/sca/util/Queue.cpp | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/sca-cpp/branches/cpp-contrib/contrib/runtime/core/src/tuscany/sca/util/Queue.cpp b/sca-cpp/branches/cpp-contrib/contrib/runtime/core/src/tuscany/sca/util/Queue.cpp new file mode 100644 index 0000000000..c124be572c --- /dev/null +++ b/sca-cpp/branches/cpp-contrib/contrib/runtime/core/src/tuscany/sca/util/Queue.cpp @@ -0,0 +1,222 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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. + */ + +/* $Rev: 491752 $ $Date: 2007-01-01 22:22:23 -0800 (Mon, 01 Jan 2007) $ */ + +#if defined(WIN32) || defined (_WINDOWS) +#pragma warning(disable: 4786) +#pragma warning(disable: 4251) +#endif + +#include <errno.h> + +#include <sstream> + +#include "tuscany/sca/util/Queue.h" +#include "tuscany/sca/util/Utils.h" +#include "tuscany/sca/util/Logging.h" +#include "tuscany/sca/core/Exceptions.h" + +using namespace std; + + +namespace tuscany +{ + namespace sca + { + namespace util + { + Queue::Queue() + { + logentry(); +#if defined(WIN32) || defined (_WINDOWS) + InitializeCriticalSection(§ion); + hevent = CreateEvent (NULL, TRUE, FALSE, NULL); +#else + int rc = pthread_mutex_init(&mutex, NULL); + if (rc) + { + ostringstream msg; + msg << "Failed to create mutex, errno: " << errno; + throwException(TuscanyRuntimeException, msg.str().c_str()); + } + + rc = pthread_cond_init(&cond, NULL); + if (rc) + { + ostringstream msg; + msg << "Failed to create condition variable, errno: " << errno; + throwException(TuscanyRuntimeException, msg.str().c_str()); + } +#endif + } + + Queue::~Queue() + { + logentry(); +#if defined(WIN32) || defined (_WINDOWS) + DeleteCriticalSection(§ion); + CloseHandle(hevent); +#else + int rc = pthread_mutex_destroy(&mutex); + if (rc) { + ostringstream msg; + msg << "Failed to destroy mutex, errno: " << errno; + throwException(TuscanyRuntimeException, msg.str().c_str()); + } + + rc = pthread_cond_destroy(&cond); + if (rc) { + ostringstream msg; + msg << "Failed to destroy condition variable, errno: " << errno; + throwException(TuscanyRuntimeException, msg.str().c_str()); + } +#endif + } + + void Queue::enqueue(void* element) + { + logentry(); +#if defined(WIN32) || defined (_WINDOWS) + EnterCriticalSection(§ion); + + try + { + queue.push(element); + + if (queue.size() == 1) + { + SetEvent(hevent); + } + } + catch (...) + { + LeaveCriticalSection(§ion); + throw; + } + LeaveCriticalSection(§ion); +#else + int rc = pthread_mutex_lock(&mutex); + if (rc) { + ostringstream msg; + msg << "Failed to lock mutex, errno: " << errno; + throwException(TuscanyRuntimeException, msg.str().c_str()); + } + try + { + queue.push(element); + + if (queue.size() == 1) + { + rc = pthread_cond_signal(&cond); + if (rc) { + ostringstream msg; + msg << "Failed to broadcast condition variable, errno: " << errno; + throwException(TuscanyRuntimeException, msg.str().c_str()); + } + } + + } + catch(...) + { + pthread_mutex_unlock(&mutex); + throw; + } + rc = pthread_mutex_unlock(&mutex); + if (rc) { + ostringstream msg; + msg << "Failed to unlock mutex, errno: " << errno; + throwException(TuscanyRuntimeException, msg.str().c_str()); + } +#endif + } + + void* Queue::dequeue() + { + logentry(); + + void* element = NULL; + +#if defined(WIN32) || defined (_WINDOWS) + + EnterCriticalSection(§ion); + try + { + while (queue.size() == 0) { + LeaveCriticalSection(§ion); + WaitForSingleObject(hevent, INFINITE); + EnterCriticalSection(§ion); + } + + element = queue.front(); + queue.pop(); + + if (queue.size() == 0) + { + ResetEvent(hevent); + } + } + catch(...) + { + LeaveCriticalSection(§ion); + throw; + } + LeaveCriticalSection(§ion); + +#else + int rc = pthread_mutex_lock(&mutex); + if (rc) { + ostringstream msg; + msg << "Failed to lock mutex, errno: " << errno; + throwException(TuscanyRuntimeException, msg.str().c_str()); + } + try + { + while (queue.size() == 0) { + rc = pthread_cond_wait(&cond, &mutex); + if (rc) { + ostringstream msg; + msg << "Failed to wait for condition variable, errno: " << errno; + throwException(TuscanyRuntimeException, msg.str().c_str()); + } + } + + element = queue.front(); + queue.pop(); + } + catch(...) + { + pthread_mutex_unlock(&mutex); + throw; + } + rc = pthread_mutex_unlock(&mutex); + if (rc) { + ostringstream msg; + msg << "Failed to unlock mutex, errno: " << errno; + throwException(TuscanyRuntimeException, msg.str().c_str()); + } + +#endif + + return element; + } + + } // End namespace util + } // End namespace sca +} // End namespace tuscany |