| /* |
| * 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_LANG_THREAD_H_ |
| #define _DECAF_LANG_THREAD_H_ |
| |
| #include <decaf/lang/Exception.h> |
| #include <decaf/lang/Runnable.h> |
| #include <decaf/util/Config.h> |
| #include <stdexcept> |
| #include <assert.h> |
| |
| #include <apr_pools.h> |
| #include <apr_thread_proc.h> |
| |
| namespace decaf{ |
| namespace lang{ |
| |
| /** |
| * Basic thread class - mimics the Java Thread. Derived classes may |
| * implement the run method, or this class can be used as is with |
| * a provided Runnable delegate. |
| */ |
| class DECAF_API Thread : public Runnable |
| { |
| private: |
| |
| /** |
| * The task to be run by this thread, defaults to |
| * this thread object. |
| */ |
| Runnable* task; |
| |
| /** |
| * APR Pool to allocate thread from |
| */ |
| apr_pool_t* pool; |
| |
| /** |
| * APR Thread Handle |
| */ |
| apr_thread_t* threadHandle; |
| |
| /** |
| * Started state of this thread. |
| */ |
| bool started; |
| |
| /** |
| * Indicates whether the thread has already been |
| * joined. |
| */ |
| bool joined; |
| |
| public: |
| |
| /** |
| * default Constructor |
| */ |
| Thread(); |
| |
| /** |
| * Constructor |
| * @param task the Runnable that this thread manages |
| */ |
| Thread( Runnable* task ); |
| |
| virtual ~Thread(); |
| |
| /** |
| * Creates a system thread and starts it in a joinable mode. |
| * Upon creation, the |
| * run() method of either this object or the provided Runnable |
| * object will be invoked in the context of this thread. |
| * @exception runtime_error is thrown if the system could |
| * not start the thread. |
| */ |
| virtual void start() throw ( Exception ); |
| |
| /** |
| * Wait til the thread exits. This is when the run() |
| * method has returned or has thrown an exception. |
| */ |
| virtual void join() throw ( Exception ); |
| |
| /** |
| * Default implementation of the run method - does nothing. |
| */ |
| virtual void run(){}; |
| |
| public: |
| |
| /** |
| * Halts execution of the calling thread for a specified no of millisec. |
| * |
| * Note that this method is a static method that applies to the |
| * calling thread and not to the thread object. |
| * @param millisecs time in milliseconds to sleep |
| */ |
| static void sleep( int millisecs ); |
| |
| /** |
| * Obtains the Thread Id of the current thread |
| * @return Thread Id |
| */ |
| static unsigned long getId(); |
| |
| private: |
| |
| // Internal thread handling |
| static void* APR_THREAD_FUNC runCallback( apr_thread_t* self, void* param ); |
| |
| }; |
| |
| }} |
| |
| #endif /*_DECAF_LANG_THREAD_H_*/ |