Jes Sorensen | 1911350 | 2010-06-10 11:42:17 +0200 | [diff] [blame] | 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 <windows.h> |
| 26 | #include <unistd.h> |
| 27 | #include <fcntl.h> |
| 28 | #include <signal.h> |
| 29 | #include <time.h> |
| 30 | #include <errno.h> |
| 31 | #include <sys/time.h> |
| 32 | #include "config-host.h" |
| 33 | #include "sysemu.h" |
Jes Sorensen | 59a5264 | 2010-06-10 11:42:25 +0200 | [diff] [blame] | 34 | #include "qemu-options.h" |
Jes Sorensen | 1911350 | 2010-06-10 11:42:17 +0200 | [diff] [blame] | 35 | |
| 36 | /***********************************************************/ |
Stefan Weil | 0a1574b | 2010-07-01 00:47:49 +0000 | [diff] [blame] | 37 | /* Functions missing in mingw */ |
| 38 | |
| 39 | int setenv(const char *name, const char *value, int overwrite) |
| 40 | { |
| 41 | int result = 0; |
| 42 | if (overwrite || !getenv(name)) { |
| 43 | size_t length = strlen(name) + strlen(value) + 2; |
| 44 | char *string = qemu_malloc(length); |
| 45 | snprintf(string, length, "%s=%s", name, value); |
| 46 | result = putenv(string); |
| 47 | } |
| 48 | return result; |
| 49 | } |
| 50 | |
| 51 | /***********************************************************/ |
Jes Sorensen | 1911350 | 2010-06-10 11:42:17 +0200 | [diff] [blame] | 52 | /* Polling handling */ |
| 53 | |
| 54 | typedef struct PollingEntry { |
| 55 | PollingFunc *func; |
| 56 | void *opaque; |
| 57 | struct PollingEntry *next; |
| 58 | } PollingEntry; |
| 59 | |
| 60 | static PollingEntry *first_polling_entry; |
| 61 | |
| 62 | int qemu_add_polling_cb(PollingFunc *func, void *opaque) |
| 63 | { |
| 64 | PollingEntry **ppe, *pe; |
| 65 | pe = qemu_mallocz(sizeof(PollingEntry)); |
| 66 | pe->func = func; |
| 67 | pe->opaque = opaque; |
| 68 | for(ppe = &first_polling_entry; *ppe != NULL; ppe = &(*ppe)->next); |
| 69 | *ppe = pe; |
| 70 | return 0; |
| 71 | } |
| 72 | |
| 73 | void qemu_del_polling_cb(PollingFunc *func, void *opaque) |
| 74 | { |
| 75 | PollingEntry **ppe, *pe; |
| 76 | for(ppe = &first_polling_entry; *ppe != NULL; ppe = &(*ppe)->next) { |
| 77 | pe = *ppe; |
| 78 | if (pe->func == func && pe->opaque == opaque) { |
| 79 | *ppe = pe->next; |
| 80 | qemu_free(pe); |
| 81 | break; |
| 82 | } |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | /***********************************************************/ |
| 87 | /* Wait objects support */ |
| 88 | typedef struct WaitObjects { |
| 89 | int num; |
| 90 | HANDLE events[MAXIMUM_WAIT_OBJECTS + 1]; |
| 91 | WaitObjectFunc *func[MAXIMUM_WAIT_OBJECTS + 1]; |
| 92 | void *opaque[MAXIMUM_WAIT_OBJECTS + 1]; |
| 93 | } WaitObjects; |
| 94 | |
| 95 | static WaitObjects wait_objects = {0}; |
| 96 | |
| 97 | int qemu_add_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque) |
| 98 | { |
| 99 | WaitObjects *w = &wait_objects; |
| 100 | |
| 101 | if (w->num >= MAXIMUM_WAIT_OBJECTS) |
| 102 | return -1; |
| 103 | w->events[w->num] = handle; |
| 104 | w->func[w->num] = func; |
| 105 | w->opaque[w->num] = opaque; |
| 106 | w->num++; |
| 107 | return 0; |
| 108 | } |
| 109 | |
| 110 | void qemu_del_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque) |
| 111 | { |
| 112 | int i, found; |
| 113 | WaitObjects *w = &wait_objects; |
| 114 | |
| 115 | found = 0; |
| 116 | for (i = 0; i < w->num; i++) { |
| 117 | if (w->events[i] == handle) |
| 118 | found = 1; |
| 119 | if (found) { |
| 120 | w->events[i] = w->events[i + 1]; |
| 121 | w->func[i] = w->func[i + 1]; |
| 122 | w->opaque[i] = w->opaque[i + 1]; |
| 123 | } |
| 124 | } |
| 125 | if (found) |
| 126 | w->num--; |
| 127 | } |
Jes Sorensen | 0d93ca7 | 2010-06-10 11:42:18 +0200 | [diff] [blame] | 128 | |
| 129 | void os_host_main_loop_wait(int *timeout) |
| 130 | { |
| 131 | int ret, ret2, i; |
| 132 | PollingEntry *pe; |
| 133 | |
| 134 | /* XXX: need to suppress polling by better using win32 events */ |
| 135 | ret = 0; |
| 136 | for(pe = first_polling_entry; pe != NULL; pe = pe->next) { |
| 137 | ret |= pe->func(pe->opaque); |
| 138 | } |
| 139 | if (ret == 0) { |
| 140 | int err; |
| 141 | WaitObjects *w = &wait_objects; |
| 142 | |
Paolo Bonzini | 9931b2f | 2011-03-12 17:43:48 +0100 | [diff] [blame] | 143 | qemu_mutex_unlock_iothread(); |
Jes Sorensen | 0d93ca7 | 2010-06-10 11:42:18 +0200 | [diff] [blame] | 144 | ret = WaitForMultipleObjects(w->num, w->events, FALSE, *timeout); |
Paolo Bonzini | 9931b2f | 2011-03-12 17:43:48 +0100 | [diff] [blame] | 145 | qemu_mutex_lock_iothread(); |
Jes Sorensen | 0d93ca7 | 2010-06-10 11:42:18 +0200 | [diff] [blame] | 146 | if (WAIT_OBJECT_0 + 0 <= ret && ret <= WAIT_OBJECT_0 + w->num - 1) { |
| 147 | if (w->func[ret - WAIT_OBJECT_0]) |
| 148 | w->func[ret - WAIT_OBJECT_0](w->opaque[ret - WAIT_OBJECT_0]); |
| 149 | |
| 150 | /* Check for additional signaled events */ |
| 151 | for(i = (ret - WAIT_OBJECT_0 + 1); i < w->num; i++) { |
| 152 | |
| 153 | /* Check if event is signaled */ |
| 154 | ret2 = WaitForSingleObject(w->events[i], 0); |
| 155 | if(ret2 == WAIT_OBJECT_0) { |
| 156 | if (w->func[i]) |
| 157 | w->func[i](w->opaque[i]); |
| 158 | } else if (ret2 == WAIT_TIMEOUT) { |
| 159 | } else { |
| 160 | err = GetLastError(); |
| 161 | fprintf(stderr, "WaitForSingleObject error %d %d\n", i, err); |
| 162 | } |
| 163 | } |
| 164 | } else if (ret == WAIT_TIMEOUT) { |
| 165 | } else { |
| 166 | err = GetLastError(); |
| 167 | fprintf(stderr, "WaitForMultipleObjects error %d %d\n", ret, err); |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | *timeout = 0; |
| 172 | } |
Jes Sorensen | 69bd73b | 2010-06-10 11:42:20 +0200 | [diff] [blame] | 173 | |
| 174 | static BOOL WINAPI qemu_ctrl_handler(DWORD type) |
| 175 | { |
| 176 | exit(STATUS_CONTROL_C_EXIT); |
| 177 | return TRUE; |
| 178 | } |
| 179 | |
Jes Sorensen | fe98ac1 | 2010-06-10 11:42:21 +0200 | [diff] [blame] | 180 | void os_setup_early_signal_handling(void) |
Jes Sorensen | 69bd73b | 2010-06-10 11:42:20 +0200 | [diff] [blame] | 181 | { |
| 182 | /* Note: cpu_interrupt() is currently not SMP safe, so we force |
| 183 | QEMU to run on a single CPU */ |
| 184 | HANDLE h; |
Stefan Weil | f45a110 | 2011-02-05 20:59:49 +0100 | [diff] [blame] | 185 | DWORD_PTR mask, smask; |
Jes Sorensen | 69bd73b | 2010-06-10 11:42:20 +0200 | [diff] [blame] | 186 | int i; |
| 187 | |
| 188 | SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE); |
| 189 | |
| 190 | h = GetCurrentProcess(); |
| 191 | if (GetProcessAffinityMask(h, &mask, &smask)) { |
| 192 | for(i = 0; i < 32; i++) { |
| 193 | if (mask & (1 << i)) |
| 194 | break; |
| 195 | } |
| 196 | if (i != 32) { |
| 197 | mask = 1 << i; |
| 198 | SetProcessAffinityMask(h, mask); |
| 199 | } |
| 200 | } |
| 201 | } |
Jes Sorensen | 6170540 | 2010-06-10 11:42:23 +0200 | [diff] [blame] | 202 | |
| 203 | /* Look for support files in the same directory as the executable. */ |
| 204 | char *os_find_datadir(const char *argv0) |
| 205 | { |
| 206 | char *p; |
| 207 | char buf[MAX_PATH]; |
| 208 | DWORD len; |
| 209 | |
| 210 | len = GetModuleFileName(NULL, buf, sizeof(buf) - 1); |
| 211 | if (len == 0) { |
| 212 | return NULL; |
| 213 | } |
| 214 | |
| 215 | buf[len] = 0; |
| 216 | p = buf + len - 1; |
| 217 | while (p != buf && *p != '\\') |
| 218 | p--; |
| 219 | *p = 0; |
| 220 | if (access(buf, R_OK) == 0) { |
| 221 | return qemu_strdup(buf); |
| 222 | } |
| 223 | return NULL; |
| 224 | } |
Jes Sorensen | 59a5264 | 2010-06-10 11:42:25 +0200 | [diff] [blame] | 225 | |
Stefan Weil | 6650b71 | 2010-10-07 18:55:48 +0200 | [diff] [blame] | 226 | void os_set_line_buffering(void) |
| 227 | { |
| 228 | setbuf(stdout, NULL); |
| 229 | setbuf(stderr, NULL); |
| 230 | } |
| 231 | |
Jes Sorensen | 59a5264 | 2010-06-10 11:42:25 +0200 | [diff] [blame] | 232 | /* |
| 233 | * Parse OS specific command line options. |
| 234 | * return 0 if option handled, -1 otherwise |
| 235 | */ |
| 236 | void os_parse_cmd_args(int index, const char *optarg) |
| 237 | { |
| 238 | return; |
| 239 | } |
Jes Sorensen | eb505be | 2010-06-10 11:42:28 +0200 | [diff] [blame] | 240 | |
| 241 | void os_pidfile_error(void) |
| 242 | { |
| 243 | fprintf(stderr, "Could not acquire pid file: %s\n", strerror(errno)); |
| 244 | } |
Jes Sorensen | bc4a957 | 2010-10-26 10:39:25 +0200 | [diff] [blame] | 245 | |
| 246 | int qemu_create_pidfile(const char *filename) |
| 247 | { |
| 248 | char buffer[128]; |
| 249 | int len; |
| 250 | HANDLE file; |
| 251 | OVERLAPPED overlap; |
| 252 | BOOL ret; |
| 253 | memset(&overlap, 0, sizeof(overlap)); |
| 254 | |
| 255 | file = CreateFile(filename, GENERIC_WRITE, FILE_SHARE_READ, NULL, |
| 256 | OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); |
| 257 | |
| 258 | if (file == INVALID_HANDLE_VALUE) { |
| 259 | return -1; |
| 260 | } |
Andreas Färber | 953ffe0 | 2011-06-02 19:58:06 +0200 | [diff] [blame] | 261 | len = snprintf(buffer, sizeof(buffer), FMT_pid "\n", getpid()); |
Jes Sorensen | bc4a957 | 2010-10-26 10:39:25 +0200 | [diff] [blame] | 262 | ret = WriteFileEx(file, (LPCVOID)buffer, (DWORD)len, |
| 263 | &overlap, NULL); |
| 264 | if (ret == 0) { |
| 265 | return -1; |
| 266 | } |
| 267 | return 0; |
| 268 | } |
Jan Kiszka | dc7a09c | 2011-03-15 12:26:31 +0100 | [diff] [blame] | 269 | |
| 270 | int qemu_get_thread_id(void) |
| 271 | { |
| 272 | return GetCurrentThreadId(); |
| 273 | } |