os-win32.c

/*
 * os-win32.c
 *
 * Copyright (c) 2003-2008 Fabrice Bellard
 * Copyright (c) 2010 Red Hat, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include "qemu/osdep.h"
#include <windows.h>
#include <mmsystem.h>
#include "qemu-common.h"
#include "qemu-options.h"
#include "sysemu/runstate.h"

static BOOL WINAPI qemu_ctrl_handler(DWORD type)
{
    qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_SIGNAL);
    /* Windows 7 kills application when the function returns.
       Sleep here to give QEMU a try for closing.
       Sleep period is 10000ms because Windows kills the program
       after 10 seconds anyway. */
    Sleep(10000);

    return TRUE;
}

static TIMECAPS mm_tc;

static void os_undo_timer_resolution(void)
{
    timeEndPeriod(mm_tc.wPeriodMin);
}

void os_setup_early_signal_handling(void)
{
    SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
    timeGetDevCaps(&mm_tc, sizeof(mm_tc));
    timeBeginPeriod(mm_tc.wPeriodMin);
    atexit(os_undo_timer_resolution);
}

/*
 * Look for support files in the same directory as the executable.
 *
 * The caller must use g_free() to free the returned data when it is
 * no longer required.
 */
char *os_find_datadir(void)
{
    return qemu_get_exec_dir();
}

void os_set_line_buffering(void)
{
    setbuf(stdout, NULL);
    setbuf(stderr, NULL);
}

/*
 * Parse OS specific command line options.
 * return 0 if option handled, -1 otherwise
 */
int os_parse_cmd_args(int index, const char *optarg)
{
    return -1;
}