xref: /openbmc/qemu/os-win32.c (revision b14df228)
1 /*
2  * os-win32.c
3  *
4  * Copyright (c) 2003-2008 Fabrice Bellard
5  * Copyright (c) 2010 Red Hat, Inc.
6  *
7  * Permission is hereby granted, free of charge, to any person obtaining a copy
8  * of this software and associated documentation files (the "Software"), to deal
9  * in the Software without restriction, including without limitation the rights
10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11  * copies of the Software, and to permit persons to whom the Software is
12  * furnished to do so, subject to the following conditions:
13  *
14  * The above copyright notice and this permission notice shall be included in
15  * all copies or substantial portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23  * THE SOFTWARE.
24  */
25 
26 #include "qemu/osdep.h"
27 #include <windows.h>
28 #include <mmsystem.h>
29 #include "sysemu/runstate.h"
30 
31 static BOOL WINAPI qemu_ctrl_handler(DWORD type)
32 {
33     qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_SIGNAL);
34     /* Windows 7 kills application when the function returns.
35        Sleep here to give QEMU a try for closing.
36        Sleep period is 10000ms because Windows kills the program
37        after 10 seconds anyway. */
38     Sleep(10000);
39 
40     return TRUE;
41 }
42 
43 static TIMECAPS mm_tc;
44 
45 static void os_undo_timer_resolution(void)
46 {
47     timeEndPeriod(mm_tc.wPeriodMin);
48 }
49 
50 void os_setup_early_signal_handling(void)
51 {
52     SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
53     timeGetDevCaps(&mm_tc, sizeof(mm_tc));
54     timeBeginPeriod(mm_tc.wPeriodMin);
55     atexit(os_undo_timer_resolution);
56 }
57 
58 void os_set_line_buffering(void)
59 {
60     setbuf(stdout, NULL);
61     setbuf(stderr, NULL);
62 }
63