| /* |
| * 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. |
| */ |
| |
| #include <decaf/util/concurrent/Mutex.h> |
| |
| #include <decaf/internal/util/concurrent/Threading.h> |
| #include <decaf/lang/Integer.h> |
| |
| #include <list> |
| |
| using namespace decaf; |
| using namespace decaf::internal; |
| using namespace decaf::internal::util; |
| using namespace decaf::internal::util::concurrent; |
| using namespace decaf::util; |
| using namespace decaf::util::concurrent; |
| using namespace decaf::lang; |
| using namespace decaf::lang::exceptions; |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| namespace decaf { |
| namespace util { |
| namespace concurrent { |
| |
| class MutexProperties { |
| private: |
| |
| MutexProperties(const MutexProperties&); |
| MutexProperties& operator=(const MutexProperties&); |
| |
| public: |
| |
| MutexProperties() : monitor(NULL), name() { |
| std::string idStr = Integer::toString(++id); |
| this->name.reserve(DEFAULT_NAME_PREFIX.length() + idStr.length()); |
| this->name.append(DEFAULT_NAME_PREFIX); |
| this->name.append(idStr); |
| } |
| |
| MutexProperties(const std::string& name) : monitor(NULL), name(name) { |
| if (this->name.empty()) { |
| std::string idStr = Integer::toString(++id); |
| this->name.reserve(DEFAULT_NAME_PREFIX.length() + idStr.length()); |
| this->name.append(DEFAULT_NAME_PREFIX); |
| this->name.append(idStr); |
| } |
| } |
| |
| MonitorHandle* monitor; |
| std::string name; |
| |
| static unsigned int id; |
| static std::string DEFAULT_NAME_PREFIX; |
| |
| }; |
| |
| unsigned int MutexProperties::id = 0; |
| std::string MutexProperties::DEFAULT_NAME_PREFIX = "Mutex-"; |
| |
| }}} |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| Mutex::Mutex() : Synchronizable(), properties(NULL) { |
| this->properties = new MutexProperties(); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| Mutex::Mutex( const std::string& name ) : Synchronizable(), properties(NULL) { |
| this->properties = new MutexProperties( name ); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| Mutex::~Mutex() { |
| |
| if (this->properties->monitor != NULL) { |
| Threading::returnMonitor(this->properties->monitor); |
| } |
| |
| delete this->properties; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| std::string Mutex::getName() const { |
| return this->properties->name; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| std::string Mutex::toString() const { |
| return this->properties->name; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| bool Mutex::isLocked() const { |
| if (this->properties->monitor != NULL) { |
| Threading::isMonitorLocked(this->properties->monitor); |
| } |
| |
| return false; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void Mutex::lock() { |
| |
| if(this->properties->monitor == NULL) { |
| |
| Threading::lockThreadsLib(); |
| |
| if (this->properties->monitor == NULL) { |
| this->properties->monitor = Threading::takeMonitor(true); |
| } |
| |
| Threading::unlockThreadsLib(); |
| } |
| |
| Threading::enterMonitor(this->properties->monitor); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| bool Mutex::tryLock() { |
| |
| if(this->properties->monitor == NULL) { |
| |
| Threading::lockThreadsLib(); |
| |
| if (this->properties->monitor == NULL) { |
| this->properties->monitor = Threading::takeMonitor(true); |
| } |
| |
| Threading::unlockThreadsLib(); |
| } |
| |
| return Threading::tryEnterMonitor(this->properties->monitor); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void Mutex::unlock() { |
| |
| if (this->properties->monitor == NULL) { |
| throw IllegalMonitorStateException(__FILE__, __LINE__, |
| "Call to unlock without prior call to lock or tryLock"); |
| } |
| |
| Threading::exitMonitor(this->properties->monitor); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void Mutex::wait() { |
| wait(0, 0); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void Mutex::wait(long long millisecs) { |
| wait(millisecs, 0); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void Mutex::wait( long long millisecs, int nanos ) { |
| |
| if (millisecs < 0) { |
| throw IllegalArgumentException(__FILE__, __LINE__, "Milliseconds value cannot be negative."); |
| } |
| |
| if (nanos < 0 || nanos > 999999) { |
| throw IllegalArgumentException(__FILE__, __LINE__, "Nanoseconds value must be in the range [0..999999]."); |
| } |
| |
| if (this->properties->monitor == NULL) { |
| throw IllegalMonitorStateException(__FILE__, __LINE__, |
| "Call to wait without prior call to lock or tryLock"); |
| } |
| |
| Threading::waitOnMonitor(this->properties->monitor, millisecs, nanos); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void Mutex::notify() { |
| |
| if (this->properties->monitor == NULL) { |
| throw IllegalMonitorStateException(__FILE__, __LINE__, |
| "Call to notify without prior call to lock or tryLock"); |
| } |
| |
| Threading::notifyWaiter(this->properties->monitor); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| void Mutex::notifyAll() { |
| |
| if (this->properties->monitor == NULL) { |
| throw IllegalMonitorStateException(__FILE__, __LINE__, |
| "Call to notifyAll without prior call to lock or tryLock"); |
| } |
| |
| Threading::notifyAllWaiters(this->properties->monitor); |
| } |