| /* |
| * 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_CONCURRENT_H_ |
| #define _DECAF_UTIL_CONCURRENT_CONCURRENT_H_ |
| |
| #include <decaf/util/concurrent/Lock.h> |
| |
| namespace decaf{ |
| namespace util{ |
| namespace concurrent{ |
| |
| /** |
| * The synchronized macro defines a mechanism for synchronizing |
| * a section of code. The macro must be passed an object that |
| * implements the Synchronizable interface. |
| * |
| * The macro works by creating a for loop that will loop exactly |
| * once, creating a Lock object that is scoped to the loop. Once |
| * the loop completes and exits the Lock object goes out of scope |
| * releasing the lock on object W. For added safety the if else |
| * is used because not all compiles restrict the lifetime of |
| * loop variables to the loop, they will however restrict them |
| * to the scope of the else. |
| * |
| * The macro would be used as follows. |
| * |
| * Synchronizable X; |
| * |
| * somefunction() |
| * { |
| * synchronized(X) |
| * { |
| * // Do something that needs synchronizing. |
| * } |
| * } |
| */ |
| |
| #define WAIT_INFINITE 0xFFFFFFFF |
| |
| #define synchronized(W) \ |
| if(false){} \ |
| else \ |
| for( decaf::util::concurrent::Lock lock_W(W); \ |
| lock_W.isLocked(); lock_W.unlock() ) |
| |
| }}} |
| |
| #endif /*_DECAF_UTIL_CONCURRENT_CONCURRENT_H_*/ |