Merge remote-tracking branch 'qemu/master'
[qemu/ar7.git] / os-win32.c
blob0b52e29020b2d89c090c5207984180d0c029edeb
1 /*
2 * os-win32.c
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 * Copyright (c) 2010 Red Hat, Inc.
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:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
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.
25 #include <windows.h>
26 #include <mmsystem.h>
27 #include <unistd.h>
28 #include <fcntl.h>
29 #include <signal.h>
30 #include <time.h>
31 #include <errno.h>
32 #include <sys/time.h>
33 #include "config-host.h"
34 #include "sysemu/sysemu.h"
35 #include "qemu-options.h"
37 /***********************************************************/
38 /* Functions missing in mingw */
40 #if defined(CONFIG_THREAD)
42 int clock_gettime(clockid_t clock_id, struct timespec *pTimespec)
44 int result = 0;
45 if (clock_id == CLOCK_REALTIME && pTimespec != 0) {
46 DWORD t = GetTickCount();
47 const unsigned cps = 1000;
48 struct timespec ts;
49 ts.tv_sec = t / cps;
50 ts.tv_nsec = (t % cps) * (1000000000UL / cps);
51 *pTimespec = ts;
52 } else {
53 errno = EINVAL;
54 result = -1;
56 return result;
59 int pthread_sigmask(int how, const sigset_t *set, sigset_t *oldset)
61 /* Dummy, do nothing. */
62 return EINVAL;
65 int sigfillset(sigset_t *set)
67 int result = 0;
68 if (set) {
69 *(set) = (sigset_t)(-1);
70 } else {
71 errno = EINVAL;
72 result = -1;
74 return result;
77 #endif /* CONFIG_THREAD */
79 int setenv(const char *name, const char *value, int overwrite)
81 int result = 0;
82 if (overwrite || !getenv(name)) {
83 size_t length = strlen(name) + strlen(value) + 2;
84 char *string = g_malloc(length);
85 snprintf(string, length, "%s=%s", name, value);
86 result = putenv(string);
88 /* Windows takes a copy and does not continue to use our string.
89 * Therefore it can be safely freed on this platform. POSIX code
90 * typically has to leak the string because according to the spec it
91 * becomes part of the environment.
93 g_free(string);
95 return result;
98 static BOOL WINAPI qemu_ctrl_handler(DWORD type)
100 qemu_system_shutdown_request();
101 /* Windows 7 kills application when the function returns.
102 Sleep here to give QEMU a try for closing.
103 Sleep period is 10000ms because Windows kills the program
104 after 10 seconds anyway. */
105 Sleep(10000);
107 return TRUE;
110 static TIMECAPS mm_tc;
112 static void os_undo_timer_resolution(void)
114 timeEndPeriod(mm_tc.wPeriodMin);
117 void os_setup_early_signal_handling(void)
119 SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
120 timeGetDevCaps(&mm_tc, sizeof(mm_tc));
121 timeBeginPeriod(mm_tc.wPeriodMin);
122 atexit(os_undo_timer_resolution);
125 /* Look for support files in the same directory as the executable. */
126 char *os_find_datadir(void)
128 return qemu_get_exec_dir();
131 void os_set_line_buffering(void)
133 setbuf(stdout, NULL);
134 setbuf(stderr, NULL);
138 * Parse OS specific command line options.
139 * return 0 if option handled, -1 otherwise
141 void os_parse_cmd_args(int index, const char *optarg)
143 return;
146 void os_pidfile_error(void)
148 fprintf(stderr, "Could not acquire pid file: %s\n", strerror(errno));
151 int qemu_create_pidfile(const char *filename)
153 char buffer[128];
154 int len;
155 HANDLE file;
156 OVERLAPPED overlap;
157 BOOL ret;
158 memset(&overlap, 0, sizeof(overlap));
160 file = CreateFile(filename, GENERIC_WRITE, FILE_SHARE_READ, NULL,
161 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
163 if (file == INVALID_HANDLE_VALUE) {
164 return -1;
166 len = snprintf(buffer, sizeof(buffer), "%d\n", getpid());
167 ret = WriteFile(file, (LPCVOID)buffer, (DWORD)len,
168 NULL, &overlap);
169 CloseHandle(file);
170 if (ret == 0) {
171 return -1;
173 return 0;