windows.hpp
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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: 2009-10-12 20:40:58 +0200 (Mon, 12 Oct 2009) $ by $Author: schulte $ 00011 * $Revision: 9882 $ 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 * Mutex 00042 */ 00043 forceinline 00044 Mutex::Mutex(void) { 00045 InitializeCriticalSection(&w_cs); 00046 } 00047 forceinline void 00048 Mutex::acquire(void) { 00049 EnterCriticalSection(&w_cs); 00050 } 00051 forceinline bool 00052 Mutex::tryacquire(void) { 00053 return TryEnterCriticalSection(&w_cs) != 0; 00054 } 00055 forceinline void 00056 Mutex::release(void) { 00057 LeaveCriticalSection(&w_cs); 00058 } 00059 forceinline 00060 Mutex::~Mutex(void) { 00061 DeleteCriticalSection(&w_cs); 00062 } 00063 00064 00065 /* 00066 * Event 00067 */ 00068 forceinline 00069 Event::Event(void) 00070 : w_h(CreateEvent(NULL, FALSE, FALSE, NULL)) { 00071 if (w_h == NULL) 00072 throw OperatingSystemError("Event::Event[Windows::CreateEvent]"); 00073 } 00074 forceinline void 00075 Event::signal(void) { 00076 if (SetEvent(w_h) == 0) 00077 throw OperatingSystemError("Event::signal[Windows::SetEvent]"); 00078 } 00079 forceinline void 00080 Event::wait(void) { 00081 if (WaitForSingleObject(w_h,INFINITE) != 0) 00082 throw OperatingSystemError("Event::wait[Windows::WaitForSingleObject]"); 00083 } 00084 forceinline 00085 Event::~Event(void) { 00086 if (CloseHandle(w_h) == 0) 00087 throw OperatingSystemError("Event::~Event[Windows::CloseHandle]"); 00088 } 00089 00090 00091 /* 00092 * Thread 00093 */ 00094 forceinline void 00095 Thread::sleep(unsigned int ms) { 00096 Sleep(static_cast<DWORD>(ms)); 00097 } 00098 00099 forceinline unsigned int 00100 Thread::npu(void) { 00101 SYSTEM_INFO si; 00102 GetSystemInfo(&si); 00103 return static_cast<unsigned int>(si.dwNumberOfProcessors); 00104 } 00105 00106 }} 00107 00108 // STATISTICS: support-any