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67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
/*
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* Copyright (C) 2011 Andrea Mazzoleni
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "portable.h"
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#include "os.h"
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/****************************************************************************/
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/* os */
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#ifdef __MINGW32__
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#define WIN32_ES_SYSTEM_REQUIRED 0x00000001L
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#define WIN32_ES_DISPLAY_REQUIRED 0x00000002L
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#define WIN32_ES_USER_PRESENT 0x00000004L
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#define WIN32_ES_AWAYMODE_REQUIRED 0x00000040L
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#define WIN32_ES_CONTINUOUS 0x80000000L
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#endif
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void os_init(void)
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{
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#ifdef __MINGW32__
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HMODULE kernel32 = GetModuleHandle("KERNEL32.DLL");
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WORD (WINAPI* WIN32_SetThreadExecutionState)(DWORD);
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if (kernel32) {
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WIN32_SetThreadExecutionState = (void*)GetProcAddress(kernel32, "SetThreadExecutionState");
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if (WIN32_SetThreadExecutionState) {
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/* set the thread execution level to avoid sleep */
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if (WIN32_SetThreadExecutionState(WIN32_ES_CONTINUOUS | WIN32_ES_SYSTEM_REQUIRED | WIN32_ES_AWAYMODE_REQUIRED) == 0) {
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/* retry with the XP variant */
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WIN32_SetThreadExecutionState(WIN32_ES_CONTINUOUS | WIN32_ES_SYSTEM_REQUIRED);
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}
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}
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}
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#endif
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}
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void os_done(void)
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{
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#ifdef __MINGW32__
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HMODULE kernel32 = GetModuleHandle("KERNEL32.DLL");
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WORD (WINAPI* WIN32_SetThreadExecutionState)(DWORD);
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if (kernel32) {
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WIN32_SetThreadExecutionState = (void*)GetProcAddress(kernel32, "SetThreadExecutionState");
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if (WIN32_SetThreadExecutionState) {
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/* restore the normal execution level */
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WIN32_SetThreadExecutionState(WIN32_ES_CONTINUOUS);
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}
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}
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#endif
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}
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