LXR qemu/os-win32.c

   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 "qemu-common.h"
  30#include "sysemu/runstate.h"
  31
  32static BOOL WINAPI qemu_ctrl_handler(DWORD type)
  33{
  34    qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_SIGNAL);
  35    /* Windows 7 kills application when the function returns.
  36       Sleep here to give QEMU a try for closing.
  37       Sleep period is 10000ms because Windows kills the program
  38       after 10 seconds anyway. */
  39    Sleep(10000);
  40
  41    return TRUE;
  42}
  43
  44static TIMECAPS mm_tc;
  45
  46static void os_undo_timer_resolution(void)
  47{
  48    timeEndPeriod(mm_tc.wPeriodMin);
  49}
  50
  51void os_setup_early_signal_handling(void)
  52{
  53    SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
  54    timeGetDevCaps(&mm_tc, sizeof(mm_tc));
  55    timeBeginPeriod(mm_tc.wPeriodMin);
  56    atexit(os_undo_timer_resolution);
  57}
  58
  59void os_set_line_buffering(void)
  60{
  61    setbuf(stdout, NULL);
  62    setbuf(stderr, NULL);
  63}
  64
  65/*
  66 * Parse OS specific command line options.
  67 * return 0 if option handled, -1 otherwise
  68 */
  69int os_parse_cmd_args(int index, const char *optarg)
  70{
  71    return -1;
  72}
  73