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/sysemu.h" 31 #include "qemu-options.h" 32 33 /***********************************************************/ 34 /* Functions missing in mingw */ 35 36 int 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 55 static 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 67 static TIMECAPS mm_tc; 68 69 static void os_undo_timer_resolution(void) 70 { 71 timeEndPeriod(mm_tc.wPeriodMin); 72 } 73 74 void 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. */ 83 char *os_find_datadir(void) 84 { 85 return qemu_get_exec_dir(); 86 } 87 88 void 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 */ 98 int os_parse_cmd_args(int index, const char *optarg) 99 { 100 return -1; 101 } 102