| /* |
| * 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. |
| */ |
| |
| #ifndef _DECAF_UTIL_CONCURRENT_SYNCHRONIZABLE_H_ |
| #define _DECAF_UTIL_CONCURRENT_SYNCHRONIZABLE_H_ |
| |
| #include <decaf/lang/exceptions/RuntimeException.h> |
| #include <decaf/lang/exceptions/InterruptedException.h> |
| #include <decaf/lang/exceptions/IllegalArgumentException.h> |
| #include <decaf/lang/exceptions/IllegalMonitorStateException.h> |
| #include <decaf/util/Config.h> |
| |
| namespace decaf { |
| namespace util { |
| namespace concurrent { |
| |
| /** |
| * The interface for all synchronizable objects (that is, objects |
| * that can be locked and unlocked). |
| * |
| * @since 1.0 |
| */ |
| class DECAF_API Synchronizable { |
| public: |
| |
| virtual ~Synchronizable(); |
| |
| /** |
| * Locks the object. |
| * |
| * @throws RuntimeException if an error occurs while locking the object. |
| */ |
| virtual void lock() = 0; |
| |
| /** |
| * Attempts to Lock the object, if the lock is already held by another |
| * thread than this method returns false. |
| * |
| * @return true if the lock was acquired, false if it is already held by |
| * another thread. |
| * |
| * @throws RuntimeException if an error occurs while locking the object. |
| */ |
| virtual bool tryLock() = 0; |
| |
| /** |
| * Unlocks the object. |
| * |
| * @throws RuntimeException if an error occurs while unlocking the object. |
| */ |
| virtual void unlock() = 0; |
| |
| /** |
| * Waits on a signal from this object, which is generated |
| * by a call to Notify. Must have this object locked before |
| * calling. |
| * |
| * @throws RuntimeException if an error occurs while waiting on the object. |
| * @throws InterruptedException if the wait is interrupted before it completes. |
| * @throws IllegalMonitorStateException - if the current thread is not the owner of the |
| * the Synchronizable Object. |
| */ |
| virtual void wait() = 0; |
| |
| /** |
| * Waits on a signal from this object, which is generated |
| * by a call to Notify. Must have this object locked before |
| * calling. This wait will timeout after the specified time |
| * interval. |
| * |
| * @param millisecs |
| * the time in milliseconds to wait, or WAIT_INIFINITE |
| * |
| * @throws RuntimeException if an error occurs while waiting on the object. |
| * @throws InterruptedException if the wait is interrupted before it completes. |
| * @throws IllegalMonitorStateException - if the current thread is not the owner of the |
| * the Synchronizable Object. |
| */ |
| virtual void wait(long long millisecs) = 0; |
| |
| /** |
| * Waits on a signal from this object, which is generated by a call to Notify. |
| * Must have this object locked before calling. This wait will timeout after the |
| * specified time interval. This method is similar to the one argument wait function |
| * except that it add a finer grained control over the amount of time that it waits |
| * by adding in the additional nanosecond argument. |
| * |
| * NOTE: The ability to wait accurately at a nanosecond scale depends on the platform |
| * and OS that the Decaf API is running on, some systems do not provide an accurate |
| * enough clock to provide this level of granularity. |
| * |
| * @param millisecs |
| * the time in milliseconds to wait, or WAIT_INIFINITE |
| * @param nanos |
| * additional time in nanoseconds with a range of 0-999999 |
| * |
| * @throws IllegalArgumentException if an error occurs or the nanos argument is not in |
| * the range of [0-999999] |
| * @throws RuntimeException if an error occurs while waiting on the object. |
| * @throws InterruptedException if the wait is interrupted before it completes. |
| * @throws IllegalMonitorStateException - if the current thread is not the owner of the |
| * the Synchronizable Object. |
| */ |
| virtual void wait(long long millisecs, int nanos) = 0; |
| |
| /** |
| * Signals a waiter on this object that it can now wake |
| * up and continue. Must have this object locked before |
| * calling. |
| * |
| * @throws IllegalMonitorStateException - if the current thread is not the owner of the |
| * the Synchronizable Object. |
| * @throws RuntimeException if an error occurs while notifying one of the waiting threads. |
| */ |
| virtual void notify() = 0; |
| |
| /** |
| * Signals the waiters on this object that it can now wake |
| * up and continue. Must have this object locked before |
| * calling. |
| * |
| * @throws IllegalMonitorStateException - if the current thread is not the owner of the |
| * the Synchronizable Object. |
| * @throws RuntimeException if an error occurs while notifying the waiting threads. |
| */ |
| virtual void notifyAll() = 0; |
| |
| }; |
| |
| }}} |
| |
| #endif /*_DECAF_UTIL_CONCURRENT_SYNCHRONIZABLE_H_*/ |