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os-win32.c 3.1KB

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