thread.hpp
Go to the documentation of this file.00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */ 00002 /* 00003 * Main authors: 00004 * Christian Schulte <schulte@gecode.org> 00005 * 00006 * Copyright: 00007 * Christian Schulte, 2009 00008 * 00009 * Last modified: 00010 * $Date: 2013-07-01 06:38:48 +0200 (Mon, 01 Jul 2013) $ by $Author: tack $ 00011 * $Revision: 13740 $ 00012 * 00013 * This file is part of Gecode, the generic constraint 00014 * development environment: 00015 * http://www.gecode.org 00016 * 00017 * Permission is hereby granted, free of charge, to any person obtaining 00018 * a copy of this software and associated documentation files (the 00019 * "Software"), to deal in the Software without restriction, including 00020 * without limitation the rights to use, copy, modify, merge, publish, 00021 * distribute, sublicense, and/or sell copies of the Software, and to 00022 * permit persons to whom the Software is furnished to do so, subject to 00023 * the following conditions: 00024 * 00025 * The above copyright notice and this permission notice shall be 00026 * included in all copies or substantial portions of the Software. 00027 * 00028 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 00029 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 00030 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 00031 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 00032 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 00033 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 00034 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00035 * 00036 */ 00037 00038 namespace Gecode { namespace Support { 00039 00040 /* 00041 * Runnable objects 00042 */ 00043 forceinline void 00044 Runnable::operator delete(void* p) { 00045 heap.rfree(p); 00046 } 00047 forceinline void* 00048 Runnable::operator new(size_t s) { 00049 return heap.ralloc(s); 00050 } 00051 00052 00053 /* 00054 * Mutexes 00055 * 00056 */ 00057 forceinline void* 00058 Mutex::operator new(size_t s) { 00059 return Gecode::heap.ralloc(s); 00060 } 00061 00062 forceinline void 00063 Mutex::operator delete(void* p) { 00064 Gecode::heap.rfree(p); 00065 } 00066 00067 #if defined(GECODE_THREADS_OSX) || defined(GECODE_THREADS_PTHREADS_SPINLOCK) 00068 00069 /* 00070 * Fast mutexes 00071 * 00072 */ 00073 forceinline void* 00074 FastMutex::operator new(size_t s) { 00075 return Gecode::heap.ralloc(s); 00076 } 00077 00078 forceinline void 00079 FastMutex::operator delete(void* p) { 00080 Gecode::heap.rfree(p); 00081 } 00082 00083 #endif 00084 00085 /* 00086 * Locks 00087 */ 00088 forceinline 00089 Lock::Lock(Mutex& m0) : m(m0) { 00090 m.acquire(); 00091 } 00092 forceinline 00093 Lock::~Lock(void) { 00094 m.release(); 00095 } 00096 00097 00098 /* 00099 * Threads 00100 */ 00101 inline void 00102 Thread::Run::run(Runnable* r0) { 00103 m.acquire(); 00104 r = r0; 00105 m.release(); 00106 e.signal(); 00107 } 00108 inline void 00109 Thread::run(Runnable* r) { 00110 m()->acquire(); 00111 if (idle != NULL) { 00112 Run* i = idle; 00113 idle = idle->n; 00114 m()->release(); 00115 i->run(r); 00116 } else { 00117 m()->release(); 00118 (void) new Run(r); 00119 } 00120 } 00121 forceinline void 00122 Thread::Run::operator delete(void* p) { 00123 heap.rfree(p); 00124 } 00125 forceinline void* 00126 Thread::Run::operator new(size_t s) { 00127 return heap.ralloc(s); 00128 } 00129 00130 }} 00131 00132 // STATISTICS: support-any