/** * WinPR: Windows Portable Runtime * Synchronization Functions * * Copyright 2012 Marc-Andre Moreau * * Licensed 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. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include "../log.h" #define TAG WINPR_TAG("synch.sleep") #ifndef _WIN32 #include #ifdef HAVE_UNISTD_H #ifndef _XOPEN_SOURCE #define _XOPEN_SOURCE 500 #endif #include #endif VOID Sleep(DWORD dwMilliseconds) { usleep(dwMilliseconds * 1000); } DWORD SleepEx(DWORD dwMilliseconds, BOOL bAlertable) { /* TODO: Implement bAlertable support */ if (bAlertable) WLog_WARN(TAG, "%s does not support bAlertable", __FUNCTION__); Sleep(dwMilliseconds); return 0; } #endif VOID USleep(DWORD dwMicroseconds) { #ifndef _WIN32 usleep(dwMicroseconds); #else static LARGE_INTEGER freq = { 0, 0 }; LARGE_INTEGER t1 = { 0, 0 }; LARGE_INTEGER t2 = { 0, 0 }; QueryPerformanceCounter(&t1); if (freq.QuadPart == 0) { QueryPerformanceFrequency(&freq); } // in order to save cpu cyles we use Sleep() for the large share ... if (dwMicroseconds >= 1000) { Sleep(dwMicroseconds/1000); } // ... and busy loop until all the requested micro seconds have passed do { QueryPerformanceCounter(&t2); } while (((t2.QuadPart - t1.QuadPart)*1000000)/freq.QuadPart < dwMicroseconds); #endif }