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 "qemu-options.h"
  31#include "sysemu/runstate.h"
  32
  33/***********************************************************/
  34/* Functions missing in mingw */
  35
  36int setenv(const char *name, const char *value, int overwrite)
  37{
  38    int result = 0;
  39    if (overwrite || !getenv(name)) {
  40        size_t length = strlen(name) + strlen(value) + 2;
  41        char *string = g_malloc(length);
  42        snprintf(string, length, "%s=%s", name, value);
  43        result = putenv(string);
  44
  45        /* Windows takes a copy and does not continue to use our string.
  46         * Therefore it can be safely freed on this platform.  POSIX code
  47         * typically has to leak the string because according to the spec it
  48         * becomes part of the environment.
  49         */
  50        g_free(string);
  51    }
  52    return result;
  53}
  54
  55static BOOL WINAPI qemu_ctrl_handler(DWORD type)
  56{
  57    qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_SIGNAL);
  58    /* Windows 7 kills application when the function returns.
  59       Sleep here to give QEMU a try for closing.
  60       Sleep period is 10000ms because Windows kills the program
  61       after 10 seconds anyway. */
  62    Sleep(10000);
  63
  64    return TRUE;
  65}
  66
  67static TIMECAPS mm_tc;
  68
  69static void os_undo_timer_resolution(void)
  70{
  71    timeEndPeriod(mm_tc.wPeriodMin);
  72}
  73
  74void os_setup_early_signal_handling(void)
  75{
  76    SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
  77    timeGetDevCaps(&mm_tc, sizeof(mm_tc));
  78    timeBeginPeriod(mm_tc.wPeriodMin);
  79    atexit(os_undo_timer_resolution);
  80}
  81
  82/* Look for support files in the same directory as the executable.  */
  83char *os_find_datadir(void)
  84{
  85    return qemu_get_exec_dir();
  86}
  87
  88void os_set_line_buffering(void)
  89{
  90    setbuf(stdout, NULL);
  91    setbuf(stderr, NULL);
  92}
  93
  94/*
  95 * Parse OS specific command line options.
  96 * return 0 if option handled, -1 otherwise
  97 */
  98int os_parse_cmd_args(int index, const char *optarg)
  99{
 100    return -1;
 101}
 102