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
32 #include "config-host.h"
34 #include "qemu-options.h"
36 /***********************************************************/
37 /* Polling handling */
39 typedef struct PollingEntry {
42 struct PollingEntry *next;
45 static PollingEntry *first_polling_entry;
47 int qemu_add_polling_cb(PollingFunc *func, void *opaque)
49 PollingEntry **ppe, *pe;
50 pe = qemu_mallocz(sizeof(PollingEntry));
53 for(ppe = &first_polling_entry; *ppe != NULL; ppe = &(*ppe)->next);
58 void qemu_del_polling_cb(PollingFunc *func, void *opaque)
60 PollingEntry **ppe, *pe;
61 for(ppe = &first_polling_entry; *ppe != NULL; ppe = &(*ppe)->next) {
63 if (pe->func == func && pe->opaque == opaque) {
71 /***********************************************************/
72 /* Wait objects support */
73 typedef struct WaitObjects {
75 HANDLE events[MAXIMUM_WAIT_OBJECTS + 1];
76 WaitObjectFunc *func[MAXIMUM_WAIT_OBJECTS + 1];
77 void *opaque[MAXIMUM_WAIT_OBJECTS + 1];
80 static WaitObjects wait_objects = {0};
82 int qemu_add_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque)
84 WaitObjects *w = &wait_objects;
86 if (w->num >= MAXIMUM_WAIT_OBJECTS)
88 w->events[w->num] = handle;
89 w->func[w->num] = func;
90 w->opaque[w->num] = opaque;
95 void qemu_del_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque)
98 WaitObjects *w = &wait_objects;
101 for (i = 0; i < w->num; i++) {
102 if (w->events[i] == handle)
105 w->events[i] = w->events[i + 1];
106 w->func[i] = w->func[i + 1];
107 w->opaque[i] = w->opaque[i + 1];
114 void os_host_main_loop_wait(int *timeout)
119 /* XXX: need to suppress polling by better using win32 events */
121 for(pe = first_polling_entry; pe != NULL; pe = pe->next) {
122 ret |= pe->func(pe->opaque);
126 WaitObjects *w = &wait_objects;
128 ret = WaitForMultipleObjects(w->num, w->events, FALSE, *timeout);
129 if (WAIT_OBJECT_0 + 0 <= ret && ret <= WAIT_OBJECT_0 + w->num - 1) {
130 if (w->func[ret - WAIT_OBJECT_0])
131 w->func[ret - WAIT_OBJECT_0](w->opaque[ret - WAIT_OBJECT_0]);
133 /* Check for additional signaled events */
134 for(i = (ret - WAIT_OBJECT_0 + 1); i < w->num; i++) {
136 /* Check if event is signaled */
137 ret2 = WaitForSingleObject(w->events[i], 0);
138 if(ret2 == WAIT_OBJECT_0) {
140 w->func[i](w->opaque[i]);
141 } else if (ret2 == WAIT_TIMEOUT) {
143 err = GetLastError();
144 fprintf(stderr, "WaitForSingleObject error %d %d\n", i, err);
147 } else if (ret == WAIT_TIMEOUT) {
149 err = GetLastError();
150 fprintf(stderr, "WaitForMultipleObjects error %d %d\n", ret, err);
157 static BOOL WINAPI qemu_ctrl_handler(DWORD type)
159 exit(STATUS_CONTROL_C_EXIT);
163 void os_setup_early_signal_handling(void)
165 /* Note: cpu_interrupt() is currently not SMP safe, so we force
166 QEMU to run on a single CPU */
171 SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
173 h = GetCurrentProcess();
174 if (GetProcessAffinityMask(h, &mask, &smask)) {
175 for(i = 0; i < 32; i++) {
181 SetProcessAffinityMask(h, mask);
186 /* Look for support files in the same directory as the executable. */
187 char *os_find_datadir(const char *argv0)
193 len = GetModuleFileName(NULL, buf, sizeof(buf) - 1);
200 while (p != buf && *p != '\\')
203 if (access(buf, R_OK) == 0) {
204 return qemu_strdup(buf);
210 * Parse OS specific command line options.
211 * return 0 if option handled, -1 otherwise
213 void os_parse_cmd_args(int index, const char *optarg)
218 void os_pidfile_error(void)
220 fprintf(stderr, "Could not acquire pid file: %s\n", strerror(errno));