75 lines
1.7 KiB
C
75 lines
1.7 KiB
C
/**
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* WinPR: Windows Portable Runtime
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* Synchronization Functions
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*
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* Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <winpr/windows.h>
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#include <winpr/synch.h>
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#ifndef _WIN32
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#include <time.h>
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#ifdef HAVE_UNISTD_H
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#define _XOPEN_SOURCE 500
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#include <unistd.h>
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#endif
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VOID Sleep(DWORD dwMilliseconds)
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{
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usleep(dwMilliseconds * 1000);
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}
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DWORD SleepEx(DWORD dwMilliseconds, BOOL bAlertable)
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{
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usleep(dwMilliseconds * 1000);
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return TRUE;
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}
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#endif
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VOID USleep(DWORD dwMicroseconds)
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{
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#ifndef _WIN32
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usleep(dwMicroseconds);
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#else
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static LARGE_INTEGER freq = { 0, 0 };
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LARGE_INTEGER t1 = { 0, 0 };
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LARGE_INTEGER t2 = { 0, 0 };
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QueryPerformanceCounter(&t1);
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if (freq.QuadPart == 0) {
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QueryPerformanceFrequency(&freq);
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}
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// in order to save cpu cyles we use Sleep() for the large share ...
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if (dwMicroseconds >= 1000) {
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Sleep(dwMicroseconds/1000);
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}
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// ... and busy loop until all the requested micro seconds have passed
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do {
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QueryPerformanceCounter(&t2);
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} while (((t2.QuadPart - t1.QuadPart)*1000000)/freq.QuadPart < dwMicroseconds);
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#endif
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}
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