snapraid/os.c
2012-06-20 22:37:19 +02:00

67 lines
2.1 KiB
C

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