/opt/workspace/qpid/tags/M2/Final/cpp/lib/common/sys/Thread.h

00001 #ifndef _sys_Thread_h
00002 #define _sys_Thread_h
00003 
00004 /*
00005  *
00006  * Licensed to the Apache Software Foundation (ASF) under one
00007  * or more contributor license agreements.  See the NOTICE file
00008  * distributed with this work for additional information
00009  * regarding copyright ownership.  The ASF licenses this file
00010  * to you under the Apache License, Version 2.0 (the
00011  * "License"); you may not use this file except in compliance
00012  * with the License.  You may obtain a copy of the License at
00013  * 
00014  *   http://www.apache.org/licenses/LICENSE-2.0
00015  * 
00016  * Unless required by applicable law or agreed to in writing,
00017  * software distributed under the License is distributed on an
00018  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
00019  * KIND, either express or implied.  See the License for the
00020  * specific language governing permissions and limitations
00021  * under the License.
00022  *
00023  */
00024 
00025 #include <sys/Runnable.h>
00026 
00027 #ifdef USE_APR
00028 #  include <apr_thread_proc.h>
00029 #  include <apr_portable.h>
00030 #  include <apr/APRPool.h>
00031 #  include <apr/APRBase.h>
00032 #else
00033 #  include <posix/check.h>
00034 #  include <pthread.h>
00035 #endif
00036 
00037 namespace qpid {
00038 namespace sys {
00039 
00040 class Thread
00041 {
00042   public:
00043     inline static Thread current();
00044     inline static void yield();
00045 
00046     inline Thread();
00047     inline Thread(qpid::sys::Runnable*);
00048     inline Thread(qpid::sys::Runnable&);
00049     ~Thread();
00050     inline void join();
00051     inline long id();
00052         
00053   private:
00054 #ifdef USE_APR
00055     static void* APR_THREAD_FUNC runRunnable(apr_thread_t* thread, void *data);
00056     inline Thread(apr_thread_t* t);
00057     apr_thread_t* thread;
00058 #else
00059     static void* runRunnable(void* runnable);
00060     inline Thread(pthread_t);
00061     pthread_t thread;
00062 #endif    
00063 };
00064 
00065 
00066 Thread::Thread() : thread(0) {}
00067 
00068 // APR ================================================================
00069 #ifdef USE_APR
00070 
00071 Thread::Thread(Runnable* runnable) {
00072     apr_pool_t* tmp_pool = APRPool::get();
00073     CHECK_APR_SUCCESS(
00074         apr_thread_create(&thread, 0, runRunnable, runnable, tmp_pool));
00075     APRPool::free(tmp_pool);
00076 }
00077 
00078 Thread::Thread(Runnable& runnable) {
00079     apr_pool_t* tmp_pool = APRPool::get();
00080     CHECK_APR_SUCCESS(
00081         apr_thread_create(&thread, 0, runRunnable, &runnable, tmp_pool));
00082     APRPool::free(tmp_pool);
00083 }
00084 
00085 void Thread::join(){
00086     apr_status_t status;
00087     if (thread != 0) 
00088         CHECK_APR_SUCCESS(apr_thread_join(&status, thread));
00089 }
00090 
00091 long Thread::id() {
00092     return long(thread);
00093 }
00094 
00095 Thread::Thread(apr_thread_t* t) : thread(t) {}
00096 
00097 Thread Thread::current(){
00098     apr_pool_t* tmp_pool = APRPool::get();
00099     apr_thread_t* thr;
00100     apr_os_thread_t osthr = apr_os_thread_current();
00101     CHECK_APR_SUCCESS(apr_os_thread_put(&thr, &osthr, tmp_pool));
00102     APRPool::free(tmp_pool);
00103     return Thread(thr);
00104 }
00105 
00106 void Thread::yield() 
00107 {
00108     apr_thread_yield();
00109 }
00110 
00111 
00112 // POSIX ================================================================
00113 #else
00114 
00115 Thread::Thread(Runnable* runnable) {
00116     QPID_POSIX_THROW_IF(pthread_create(&thread, NULL, runRunnable, runnable));
00117 }
00118 
00119 Thread::Thread(Runnable& runnable) {
00120     QPID_POSIX_THROW_IF(pthread_create(&thread, NULL, runRunnable, &runnable));
00121 }
00122 
00123 void Thread::join(){
00124     QPID_POSIX_THROW_IF(pthread_join(thread, 0));
00125 }
00126 
00127 long Thread::id() {
00128     return long(thread);
00129 }
00130 
00131 Thread::~Thread() {
00132 }
00133 
00134 Thread::Thread(pthread_t thr) : thread(thr) {}
00135 
00136 Thread Thread::current() {
00137     return Thread(pthread_self());
00138 }
00139 
00140 void Thread::yield() 
00141 {
00142     QPID_POSIX_THROW_IF(pthread_yield());
00143 }
00144 
00145 
00146 #endif
00147 
00148 }}
00149 
00150 #endif  

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