Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 1 | /* |
| 2 | * QEMU System Emulator |
| 3 | * |
| 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
| 24 | |
Paolo Bonzini | 9c17d61 | 2012-12-17 18:20:04 +0100 | [diff] [blame] | 25 | #include "sysemu/sysemu.h" |
Paolo Bonzini | 83c9089 | 2012-12-17 18:19:49 +0100 | [diff] [blame] | 26 | #include "monitor/monitor.h" |
Paolo Bonzini | 28ecbae | 2012-11-28 12:06:30 +0100 | [diff] [blame] | 27 | #include "ui/console.h" |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 28 | |
| 29 | #include "hw/hw.h" |
| 30 | |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 31 | #include "qemu/timer.h" |
Anthony Liguori | 30ea833 | 2012-11-02 16:12:53 -0500 | [diff] [blame] | 32 | #ifdef CONFIG_POSIX |
| 33 | #include <pthread.h> |
| 34 | #endif |
Stefan Weil | bff9f8b | 2012-04-20 10:27:06 +0200 | [diff] [blame] | 35 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 36 | #ifdef _WIN32 |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 37 | #include <mmsystem.h> |
| 38 | #endif |
| 39 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 40 | /***********************************************************/ |
| 41 | /* timers */ |
| 42 | |
| 43 | #define QEMU_CLOCK_REALTIME 0 |
| 44 | #define QEMU_CLOCK_VIRTUAL 1 |
| 45 | #define QEMU_CLOCK_HOST 2 |
| 46 | |
| 47 | struct QEMUClock { |
Paolo Bonzini | 688eb38 | 2011-09-13 11:42:26 +0200 | [diff] [blame] | 48 | QEMUTimer *active_timers; |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 49 | |
| 50 | NotifierList reset_notifiers; |
| 51 | int64_t last; |
Stefan Weil | 9a14b29 | 2012-04-20 11:51:58 +0200 | [diff] [blame] | 52 | |
| 53 | int type; |
| 54 | bool enabled; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 55 | }; |
| 56 | |
| 57 | struct QEMUTimer { |
Paolo Bonzini | 4a99874 | 2011-03-11 16:33:58 +0100 | [diff] [blame] | 58 | int64_t expire_time; /* in nanoseconds */ |
Stefan Weil | 9a14b29 | 2012-04-20 11:51:58 +0200 | [diff] [blame] | 59 | QEMUClock *clock; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 60 | QEMUTimerCB *cb; |
| 61 | void *opaque; |
Stefan Weil | 9a14b29 | 2012-04-20 11:51:58 +0200 | [diff] [blame] | 62 | QEMUTimer *next; |
| 63 | int scale; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 64 | }; |
| 65 | |
| 66 | struct qemu_alarm_timer { |
| 67 | char const *name; |
| 68 | int (*start)(struct qemu_alarm_timer *t); |
| 69 | void (*stop)(struct qemu_alarm_timer *t); |
Paolo Bonzini | f3fc6e2 | 2011-03-14 09:45:38 +0100 | [diff] [blame] | 70 | void (*rearm)(struct qemu_alarm_timer *t, int64_t nearest_delta_ns); |
Stefan Weil | cd0544e | 2011-04-10 20:15:09 +0200 | [diff] [blame] | 71 | #if defined(__linux__) |
Stefan Weil | cd0544e | 2011-04-10 20:15:09 +0200 | [diff] [blame] | 72 | timer_t timer; |
Stefan Weil | 9a14b29 | 2012-04-20 11:51:58 +0200 | [diff] [blame] | 73 | int fd; |
Stefan Weil | cd0544e | 2011-04-10 20:15:09 +0200 | [diff] [blame] | 74 | #elif defined(_WIN32) |
| 75 | HANDLE timer; |
| 76 | #endif |
Stefan Weil | 5e1ec7b | 2012-04-20 10:45:48 +0200 | [diff] [blame] | 77 | bool expired; |
| 78 | bool pending; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 79 | }; |
| 80 | |
| 81 | static struct qemu_alarm_timer *alarm_timer; |
| 82 | |
Stefan Weil | 45c7b37 | 2011-03-24 21:31:24 +0100 | [diff] [blame] | 83 | static bool qemu_timer_expired_ns(QEMUTimer *timer_head, int64_t current_time) |
| 84 | { |
| 85 | return timer_head && (timer_head->expire_time <= current_time); |
| 86 | } |
| 87 | |
Paolo Bonzini | f3fc6e2 | 2011-03-14 09:45:38 +0100 | [diff] [blame] | 88 | static int64_t qemu_next_alarm_deadline(void) |
| 89 | { |
Stefano Stabellini | 4ffd16f | 2012-04-13 19:35:03 +0100 | [diff] [blame] | 90 | int64_t delta = INT64_MAX; |
Paolo Bonzini | f3fc6e2 | 2011-03-14 09:45:38 +0100 | [diff] [blame] | 91 | int64_t rtdelta; |
| 92 | |
Stefano Stabellini | 4ffd16f | 2012-04-13 19:35:03 +0100 | [diff] [blame] | 93 | if (!use_icount && vm_clock->enabled && vm_clock->active_timers) { |
Paolo Bonzini | f3fc6e2 | 2011-03-14 09:45:38 +0100 | [diff] [blame] | 94 | delta = vm_clock->active_timers->expire_time - |
| 95 | qemu_get_clock_ns(vm_clock); |
Paolo Bonzini | f3fc6e2 | 2011-03-14 09:45:38 +0100 | [diff] [blame] | 96 | } |
Stefano Stabellini | 4ffd16f | 2012-04-13 19:35:03 +0100 | [diff] [blame] | 97 | if (host_clock->enabled && host_clock->active_timers) { |
Paolo Bonzini | f3fc6e2 | 2011-03-14 09:45:38 +0100 | [diff] [blame] | 98 | int64_t hdelta = host_clock->active_timers->expire_time - |
| 99 | qemu_get_clock_ns(host_clock); |
| 100 | if (hdelta < delta) { |
| 101 | delta = hdelta; |
| 102 | } |
| 103 | } |
Stefano Stabellini | 4ffd16f | 2012-04-13 19:35:03 +0100 | [diff] [blame] | 104 | if (rt_clock->enabled && rt_clock->active_timers) { |
Paolo Bonzini | f3fc6e2 | 2011-03-14 09:45:38 +0100 | [diff] [blame] | 105 | rtdelta = (rt_clock->active_timers->expire_time - |
| 106 | qemu_get_clock_ns(rt_clock)); |
| 107 | if (rtdelta < delta) { |
| 108 | delta = rtdelta; |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | return delta; |
| 113 | } |
| 114 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 115 | static void qemu_rearm_alarm_timer(struct qemu_alarm_timer *t) |
| 116 | { |
Stefano Stabellini | 8227421 | 2012-05-29 03:35:24 +0000 | [diff] [blame] | 117 | int64_t nearest_delta_ns = qemu_next_alarm_deadline(); |
| 118 | if (nearest_delta_ns < INT64_MAX) { |
| 119 | t->rearm(t, nearest_delta_ns); |
Paolo Bonzini | f3fc6e2 | 2011-03-14 09:45:38 +0100 | [diff] [blame] | 120 | } |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 121 | } |
| 122 | |
Paolo Bonzini | 9c13246 | 2011-02-03 14:48:59 +0100 | [diff] [blame] | 123 | /* TODO: MIN_TIMER_REARM_NS should be optimized */ |
| 124 | #define MIN_TIMER_REARM_NS 250000 |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 125 | |
| 126 | #ifdef _WIN32 |
| 127 | |
Stefan Weil | 2f9cba0 | 2011-04-05 18:34:21 +0200 | [diff] [blame] | 128 | static int mm_start_timer(struct qemu_alarm_timer *t); |
| 129 | static void mm_stop_timer(struct qemu_alarm_timer *t); |
Paolo Bonzini | f3fc6e2 | 2011-03-14 09:45:38 +0100 | [diff] [blame] | 130 | static void mm_rearm_timer(struct qemu_alarm_timer *t, int64_t delta); |
Stefan Weil | 2f9cba0 | 2011-04-05 18:34:21 +0200 | [diff] [blame] | 131 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 132 | static int win32_start_timer(struct qemu_alarm_timer *t); |
| 133 | static void win32_stop_timer(struct qemu_alarm_timer *t); |
Paolo Bonzini | f3fc6e2 | 2011-03-14 09:45:38 +0100 | [diff] [blame] | 134 | static void win32_rearm_timer(struct qemu_alarm_timer *t, int64_t delta); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 135 | |
| 136 | #else |
| 137 | |
| 138 | static int unix_start_timer(struct qemu_alarm_timer *t); |
| 139 | static void unix_stop_timer(struct qemu_alarm_timer *t); |
Paolo Bonzini | f3fc6e2 | 2011-03-14 09:45:38 +0100 | [diff] [blame] | 140 | static void unix_rearm_timer(struct qemu_alarm_timer *t, int64_t delta); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 141 | |
| 142 | #ifdef __linux__ |
| 143 | |
| 144 | static int dynticks_start_timer(struct qemu_alarm_timer *t); |
| 145 | static void dynticks_stop_timer(struct qemu_alarm_timer *t); |
Paolo Bonzini | f3fc6e2 | 2011-03-14 09:45:38 +0100 | [diff] [blame] | 146 | static void dynticks_rearm_timer(struct qemu_alarm_timer *t, int64_t delta); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 147 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 148 | #endif /* __linux__ */ |
| 149 | |
| 150 | #endif /* _WIN32 */ |
| 151 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 152 | static struct qemu_alarm_timer alarm_timers[] = { |
| 153 | #ifndef _WIN32 |
| 154 | #ifdef __linux__ |
| 155 | {"dynticks", dynticks_start_timer, |
Stefan Weil | cd0544e | 2011-04-10 20:15:09 +0200 | [diff] [blame] | 156 | dynticks_stop_timer, dynticks_rearm_timer}, |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 157 | #endif |
Paolo Bonzini | 8468283 | 2011-06-09 13:10:25 +0200 | [diff] [blame] | 158 | {"unix", unix_start_timer, unix_stop_timer, unix_rearm_timer}, |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 159 | #else |
Paolo Bonzini | cca5de7 | 2011-11-09 12:46:56 +0100 | [diff] [blame] | 160 | {"mmtimer", mm_start_timer, mm_stop_timer, mm_rearm_timer}, |
Stefan Weil | cd0544e | 2011-04-10 20:15:09 +0200 | [diff] [blame] | 161 | {"dynticks", win32_start_timer, win32_stop_timer, win32_rearm_timer}, |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 162 | #endif |
| 163 | {NULL, } |
| 164 | }; |
| 165 | |
| 166 | static void show_available_alarms(void) |
| 167 | { |
| 168 | int i; |
| 169 | |
| 170 | printf("Available alarm timers, in order of precedence:\n"); |
| 171 | for (i = 0; alarm_timers[i].name; i++) |
| 172 | printf("%s\n", alarm_timers[i].name); |
| 173 | } |
| 174 | |
| 175 | void configure_alarms(char const *opt) |
| 176 | { |
| 177 | int i; |
| 178 | int cur = 0; |
| 179 | int count = ARRAY_SIZE(alarm_timers) - 1; |
| 180 | char *arg; |
| 181 | char *name; |
| 182 | struct qemu_alarm_timer tmp; |
| 183 | |
Peter Maydell | c8057f9 | 2012-08-02 13:45:54 +0100 | [diff] [blame] | 184 | if (is_help_option(opt)) { |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 185 | show_available_alarms(); |
| 186 | exit(0); |
| 187 | } |
| 188 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 189 | arg = g_strdup(opt); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 190 | |
| 191 | /* Reorder the array */ |
| 192 | name = strtok(arg, ","); |
| 193 | while (name) { |
| 194 | for (i = 0; i < count && alarm_timers[i].name; i++) { |
| 195 | if (!strcmp(alarm_timers[i].name, name)) |
| 196 | break; |
| 197 | } |
| 198 | |
| 199 | if (i == count) { |
| 200 | fprintf(stderr, "Unknown clock %s\n", name); |
| 201 | goto next; |
| 202 | } |
| 203 | |
| 204 | if (i < cur) |
| 205 | /* Ignore */ |
| 206 | goto next; |
| 207 | |
| 208 | /* Swap */ |
| 209 | tmp = alarm_timers[i]; |
| 210 | alarm_timers[i] = alarm_timers[cur]; |
| 211 | alarm_timers[cur] = tmp; |
| 212 | |
| 213 | cur++; |
| 214 | next: |
| 215 | name = strtok(NULL, ","); |
| 216 | } |
| 217 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 218 | g_free(arg); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 219 | |
| 220 | if (cur) { |
| 221 | /* Disable remaining timers */ |
| 222 | for (i = cur; i < count; i++) |
| 223 | alarm_timers[i].name = NULL; |
| 224 | } else { |
| 225 | show_available_alarms(); |
| 226 | exit(1); |
| 227 | } |
| 228 | } |
| 229 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 230 | QEMUClock *rt_clock; |
| 231 | QEMUClock *vm_clock; |
| 232 | QEMUClock *host_clock; |
| 233 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 234 | static QEMUClock *qemu_new_clock(int type) |
| 235 | { |
| 236 | QEMUClock *clock; |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 237 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 238 | clock = g_malloc0(sizeof(QEMUClock)); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 239 | clock->type = type; |
Stefan Weil | 5e1ec7b | 2012-04-20 10:45:48 +0200 | [diff] [blame] | 240 | clock->enabled = true; |
Paolo Bonzini | 2ff68d0 | 2011-09-12 16:21:44 +0200 | [diff] [blame] | 241 | clock->last = INT64_MIN; |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 242 | notifier_list_init(&clock->reset_notifiers); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 243 | return clock; |
| 244 | } |
| 245 | |
Stefan Weil | 5e1ec7b | 2012-04-20 10:45:48 +0200 | [diff] [blame] | 246 | void qemu_clock_enable(QEMUClock *clock, bool enabled) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 247 | { |
Paolo Bonzini | fbdc14e | 2011-09-27 18:23:14 +0200 | [diff] [blame] | 248 | bool old = clock->enabled; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 249 | clock->enabled = enabled; |
Paolo Bonzini | fbdc14e | 2011-09-27 18:23:14 +0200 | [diff] [blame] | 250 | if (enabled && !old) { |
| 251 | qemu_rearm_alarm_timer(alarm_timer); |
| 252 | } |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 253 | } |
| 254 | |
Paolo Bonzini | dc2dfcf | 2011-09-12 15:50:16 +0200 | [diff] [blame] | 255 | int64_t qemu_clock_has_timers(QEMUClock *clock) |
| 256 | { |
| 257 | return !!clock->active_timers; |
| 258 | } |
| 259 | |
| 260 | int64_t qemu_clock_expired(QEMUClock *clock) |
| 261 | { |
| 262 | return (clock->active_timers && |
| 263 | clock->active_timers->expire_time < qemu_get_clock_ns(clock)); |
| 264 | } |
| 265 | |
| 266 | int64_t qemu_clock_deadline(QEMUClock *clock) |
| 267 | { |
| 268 | /* To avoid problems with overflow limit this to 2^32. */ |
| 269 | int64_t delta = INT32_MAX; |
| 270 | |
| 271 | if (clock->active_timers) { |
| 272 | delta = clock->active_timers->expire_time - qemu_get_clock_ns(clock); |
| 273 | } |
| 274 | if (delta < 0) { |
| 275 | delta = 0; |
| 276 | } |
| 277 | return delta; |
| 278 | } |
| 279 | |
Paolo Bonzini | 4a99874 | 2011-03-11 16:33:58 +0100 | [diff] [blame] | 280 | QEMUTimer *qemu_new_timer(QEMUClock *clock, int scale, |
| 281 | QEMUTimerCB *cb, void *opaque) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 282 | { |
| 283 | QEMUTimer *ts; |
| 284 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 285 | ts = g_malloc0(sizeof(QEMUTimer)); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 286 | ts->clock = clock; |
| 287 | ts->cb = cb; |
| 288 | ts->opaque = opaque; |
Paolo Bonzini | 4a99874 | 2011-03-11 16:33:58 +0100 | [diff] [blame] | 289 | ts->scale = scale; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 290 | return ts; |
| 291 | } |
| 292 | |
| 293 | void qemu_free_timer(QEMUTimer *ts) |
| 294 | { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 295 | g_free(ts); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 296 | } |
| 297 | |
| 298 | /* stop a timer, but do not dealloc it */ |
| 299 | void qemu_del_timer(QEMUTimer *ts) |
| 300 | { |
| 301 | QEMUTimer **pt, *t; |
| 302 | |
| 303 | /* NOTE: this code must be signal safe because |
| 304 | qemu_timer_expired() can be called from a signal. */ |
Paolo Bonzini | 688eb38 | 2011-09-13 11:42:26 +0200 | [diff] [blame] | 305 | pt = &ts->clock->active_timers; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 306 | for(;;) { |
| 307 | t = *pt; |
| 308 | if (!t) |
| 309 | break; |
| 310 | if (t == ts) { |
| 311 | *pt = t->next; |
| 312 | break; |
| 313 | } |
| 314 | pt = &t->next; |
| 315 | } |
| 316 | } |
| 317 | |
| 318 | /* modify the current timer so that it will be fired when current_time |
| 319 | >= expire_time. The corresponding callback will be called. */ |
Paolo Bonzini | 2ff68d0 | 2011-09-12 16:21:44 +0200 | [diff] [blame] | 320 | void qemu_mod_timer_ns(QEMUTimer *ts, int64_t expire_time) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 321 | { |
| 322 | QEMUTimer **pt, *t; |
| 323 | |
| 324 | qemu_del_timer(ts); |
| 325 | |
| 326 | /* add the timer in the sorted list */ |
| 327 | /* NOTE: this code must be signal safe because |
| 328 | qemu_timer_expired() can be called from a signal. */ |
Paolo Bonzini | 688eb38 | 2011-09-13 11:42:26 +0200 | [diff] [blame] | 329 | pt = &ts->clock->active_timers; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 330 | for(;;) { |
| 331 | t = *pt; |
Stefan Weil | 45c7b37 | 2011-03-24 21:31:24 +0100 | [diff] [blame] | 332 | if (!qemu_timer_expired_ns(t, expire_time)) { |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 333 | break; |
Stefan Weil | 45c7b37 | 2011-03-24 21:31:24 +0100 | [diff] [blame] | 334 | } |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 335 | pt = &t->next; |
| 336 | } |
| 337 | ts->expire_time = expire_time; |
| 338 | ts->next = *pt; |
| 339 | *pt = ts; |
| 340 | |
| 341 | /* Rearm if necessary */ |
Paolo Bonzini | 688eb38 | 2011-09-13 11:42:26 +0200 | [diff] [blame] | 342 | if (pt == &ts->clock->active_timers) { |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 343 | if (!alarm_timer->pending) { |
| 344 | qemu_rearm_alarm_timer(alarm_timer); |
| 345 | } |
| 346 | /* Interrupt execution to force deadline recalculation. */ |
Paolo Bonzini | ab33fcd | 2011-04-13 10:03:44 +0200 | [diff] [blame] | 347 | qemu_clock_warp(ts->clock); |
| 348 | if (use_icount) { |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 349 | qemu_notify_event(); |
Paolo Bonzini | ab33fcd | 2011-04-13 10:03:44 +0200 | [diff] [blame] | 350 | } |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 351 | } |
| 352 | } |
| 353 | |
Paolo Bonzini | 4a99874 | 2011-03-11 16:33:58 +0100 | [diff] [blame] | 354 | void qemu_mod_timer(QEMUTimer *ts, int64_t expire_time) |
| 355 | { |
| 356 | qemu_mod_timer_ns(ts, expire_time * ts->scale); |
| 357 | } |
| 358 | |
Stefan Weil | 5e1ec7b | 2012-04-20 10:45:48 +0200 | [diff] [blame] | 359 | bool qemu_timer_pending(QEMUTimer *ts) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 360 | { |
| 361 | QEMUTimer *t; |
Paolo Bonzini | 688eb38 | 2011-09-13 11:42:26 +0200 | [diff] [blame] | 362 | for (t = ts->clock->active_timers; t != NULL; t = t->next) { |
Stefan Weil | 5e1ec7b | 2012-04-20 10:45:48 +0200 | [diff] [blame] | 363 | if (t == ts) { |
| 364 | return true; |
| 365 | } |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 366 | } |
Stefan Weil | 5e1ec7b | 2012-04-20 10:45:48 +0200 | [diff] [blame] | 367 | return false; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 368 | } |
| 369 | |
Stefan Weil | 5e1ec7b | 2012-04-20 10:45:48 +0200 | [diff] [blame] | 370 | bool qemu_timer_expired(QEMUTimer *timer_head, int64_t current_time) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 371 | { |
Stefan Weil | 45c7b37 | 2011-03-24 21:31:24 +0100 | [diff] [blame] | 372 | return qemu_timer_expired_ns(timer_head, current_time * timer_head->scale); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 373 | } |
| 374 | |
Paolo Bonzini | 8156be5 | 2012-03-28 15:42:04 +0200 | [diff] [blame] | 375 | void qemu_run_timers(QEMUClock *clock) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 376 | { |
Paolo Bonzini | 144b97c | 2012-09-19 15:52:44 +0200 | [diff] [blame] | 377 | QEMUTimer *ts; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 378 | int64_t current_time; |
| 379 | |
| 380 | if (!clock->enabled) |
| 381 | return; |
| 382 | |
Paolo Bonzini | 4a99874 | 2011-03-11 16:33:58 +0100 | [diff] [blame] | 383 | current_time = qemu_get_clock_ns(clock); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 384 | for(;;) { |
Paolo Bonzini | 144b97c | 2012-09-19 15:52:44 +0200 | [diff] [blame] | 385 | ts = clock->active_timers; |
Stefan Weil | 45c7b37 | 2011-03-24 21:31:24 +0100 | [diff] [blame] | 386 | if (!qemu_timer_expired_ns(ts, current_time)) { |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 387 | break; |
Stefan Weil | 45c7b37 | 2011-03-24 21:31:24 +0100 | [diff] [blame] | 388 | } |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 389 | /* remove timer from the list before calling the callback */ |
Paolo Bonzini | 144b97c | 2012-09-19 15:52:44 +0200 | [diff] [blame] | 390 | clock->active_timers = ts->next; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 391 | ts->next = NULL; |
| 392 | |
| 393 | /* run the callback (the timer list can be modified) */ |
| 394 | ts->cb(ts->opaque); |
| 395 | } |
| 396 | } |
| 397 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 398 | int64_t qemu_get_clock_ns(QEMUClock *clock) |
| 399 | { |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 400 | int64_t now, last; |
| 401 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 402 | switch(clock->type) { |
| 403 | case QEMU_CLOCK_REALTIME: |
| 404 | return get_clock(); |
| 405 | default: |
| 406 | case QEMU_CLOCK_VIRTUAL: |
| 407 | if (use_icount) { |
| 408 | return cpu_get_icount(); |
| 409 | } else { |
| 410 | return cpu_get_clock(); |
| 411 | } |
| 412 | case QEMU_CLOCK_HOST: |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 413 | now = get_clock_realtime(); |
| 414 | last = clock->last; |
| 415 | clock->last = now; |
| 416 | if (now < last) { |
| 417 | notifier_list_notify(&clock->reset_notifiers, &now); |
| 418 | } |
| 419 | return now; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 420 | } |
| 421 | } |
| 422 | |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 423 | void qemu_register_clock_reset_notifier(QEMUClock *clock, Notifier *notifier) |
| 424 | { |
| 425 | notifier_list_add(&clock->reset_notifiers, notifier); |
| 426 | } |
| 427 | |
| 428 | void qemu_unregister_clock_reset_notifier(QEMUClock *clock, Notifier *notifier) |
| 429 | { |
Paolo Bonzini | 3155252 | 2012-01-13 17:34:01 +0100 | [diff] [blame] | 430 | notifier_remove(notifier); |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 431 | } |
| 432 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 433 | void init_clocks(void) |
| 434 | { |
Paolo Bonzini | 744ca8e | 2012-10-29 15:26:28 +0100 | [diff] [blame] | 435 | if (!rt_clock) { |
| 436 | rt_clock = qemu_new_clock(QEMU_CLOCK_REALTIME); |
| 437 | vm_clock = qemu_new_clock(QEMU_CLOCK_VIRTUAL); |
| 438 | host_clock = qemu_new_clock(QEMU_CLOCK_HOST); |
| 439 | } |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 440 | } |
| 441 | |
Paolo Bonzini | 2ff68d0 | 2011-09-12 16:21:44 +0200 | [diff] [blame] | 442 | uint64_t qemu_timer_expire_time_ns(QEMUTimer *ts) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 443 | { |
Paolo Bonzini | 2ff68d0 | 2011-09-12 16:21:44 +0200 | [diff] [blame] | 444 | return qemu_timer_pending(ts) ? ts->expire_time : -1; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 445 | } |
| 446 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 447 | void qemu_run_all_timers(void) |
| 448 | { |
Stefan Weil | 5e1ec7b | 2012-04-20 10:45:48 +0200 | [diff] [blame] | 449 | alarm_timer->pending = false; |
Paolo Bonzini | ca5a2a4 | 2010-03-19 11:30:35 +0100 | [diff] [blame] | 450 | |
Peter Portante | 158fd3c | 2012-04-05 11:00:45 -0400 | [diff] [blame] | 451 | /* vm time timers */ |
| 452 | qemu_run_timers(vm_clock); |
| 453 | qemu_run_timers(rt_clock); |
| 454 | qemu_run_timers(host_clock); |
| 455 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 456 | /* rearm timer, if not periodic */ |
| 457 | if (alarm_timer->expired) { |
Stefan Weil | 5e1ec7b | 2012-04-20 10:45:48 +0200 | [diff] [blame] | 458 | alarm_timer->expired = false; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 459 | qemu_rearm_alarm_timer(alarm_timer); |
| 460 | } |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 461 | } |
| 462 | |
| 463 | #ifdef _WIN32 |
Paolo Bonzini | 68c23e5 | 2011-03-12 17:43:50 +0100 | [diff] [blame] | 464 | static void CALLBACK host_alarm_handler(PVOID lpParam, BOOLEAN unused) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 465 | #else |
| 466 | static void host_alarm_handler(int host_signum) |
| 467 | #endif |
| 468 | { |
| 469 | struct qemu_alarm_timer *t = alarm_timer; |
| 470 | if (!t) |
| 471 | return; |
| 472 | |
Stefan Weil | 8205199 | 2012-04-20 11:27:24 +0200 | [diff] [blame] | 473 | t->expired = true; |
| 474 | t->pending = true; |
| 475 | qemu_notify_event(); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 476 | } |
| 477 | |
Paolo Bonzini | 4c3d45e | 2011-02-03 14:49:01 +0100 | [diff] [blame] | 478 | #if defined(__linux__) |
| 479 | |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 480 | #include "qemu/compatfd.h" |
Jan Kiszka | d25f89c | 2011-06-17 11:25:49 +0200 | [diff] [blame] | 481 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 482 | static int dynticks_start_timer(struct qemu_alarm_timer *t) |
| 483 | { |
| 484 | struct sigevent ev; |
| 485 | timer_t host_timer; |
| 486 | struct sigaction act; |
| 487 | |
| 488 | sigfillset(&act.sa_mask); |
| 489 | act.sa_flags = 0; |
| 490 | act.sa_handler = host_alarm_handler; |
| 491 | |
| 492 | sigaction(SIGALRM, &act, NULL); |
| 493 | |
| 494 | /* |
| 495 | * Initialize ev struct to 0 to avoid valgrind complaining |
| 496 | * about uninitialized data in timer_create call |
| 497 | */ |
| 498 | memset(&ev, 0, sizeof(ev)); |
| 499 | ev.sigev_value.sival_int = 0; |
| 500 | ev.sigev_notify = SIGEV_SIGNAL; |
Richard Henderson | 1e9737d | 2012-10-23 07:33:00 +1000 | [diff] [blame] | 501 | #ifdef CONFIG_SIGEV_THREAD_ID |
Jan Kiszka | d25f89c | 2011-06-17 11:25:49 +0200 | [diff] [blame] | 502 | if (qemu_signalfd_available()) { |
| 503 | ev.sigev_notify = SIGEV_THREAD_ID; |
| 504 | ev._sigev_un._tid = qemu_get_thread_id(); |
| 505 | } |
Richard Henderson | 1e9737d | 2012-10-23 07:33:00 +1000 | [diff] [blame] | 506 | #endif /* CONFIG_SIGEV_THREAD_ID */ |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 507 | ev.sigev_signo = SIGALRM; |
| 508 | |
| 509 | if (timer_create(CLOCK_REALTIME, &ev, &host_timer)) { |
| 510 | perror("timer_create"); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 511 | return -1; |
| 512 | } |
| 513 | |
Stefan Weil | cd0544e | 2011-04-10 20:15:09 +0200 | [diff] [blame] | 514 | t->timer = host_timer; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 515 | |
| 516 | return 0; |
| 517 | } |
| 518 | |
| 519 | static void dynticks_stop_timer(struct qemu_alarm_timer *t) |
| 520 | { |
Stefan Weil | cd0544e | 2011-04-10 20:15:09 +0200 | [diff] [blame] | 521 | timer_t host_timer = t->timer; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 522 | |
| 523 | timer_delete(host_timer); |
| 524 | } |
| 525 | |
Paolo Bonzini | f3fc6e2 | 2011-03-14 09:45:38 +0100 | [diff] [blame] | 526 | static void dynticks_rearm_timer(struct qemu_alarm_timer *t, |
| 527 | int64_t nearest_delta_ns) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 528 | { |
Stefan Weil | cd0544e | 2011-04-10 20:15:09 +0200 | [diff] [blame] | 529 | timer_t host_timer = t->timer; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 530 | struct itimerspec timeout; |
Paolo Bonzini | 9c13246 | 2011-02-03 14:48:59 +0100 | [diff] [blame] | 531 | int64_t current_ns; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 532 | |
Paolo Bonzini | 4c3d45e | 2011-02-03 14:49:01 +0100 | [diff] [blame] | 533 | if (nearest_delta_ns < MIN_TIMER_REARM_NS) |
| 534 | nearest_delta_ns = MIN_TIMER_REARM_NS; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 535 | |
| 536 | /* check whether a timer is already running */ |
| 537 | if (timer_gettime(host_timer, &timeout)) { |
| 538 | perror("gettime"); |
| 539 | fprintf(stderr, "Internal timer error: aborting\n"); |
| 540 | exit(1); |
| 541 | } |
Paolo Bonzini | 9c13246 | 2011-02-03 14:48:59 +0100 | [diff] [blame] | 542 | current_ns = timeout.it_value.tv_sec * 1000000000LL + timeout.it_value.tv_nsec; |
| 543 | if (current_ns && current_ns <= nearest_delta_ns) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 544 | return; |
| 545 | |
| 546 | timeout.it_interval.tv_sec = 0; |
| 547 | timeout.it_interval.tv_nsec = 0; /* 0 for one-shot timer */ |
Paolo Bonzini | 9c13246 | 2011-02-03 14:48:59 +0100 | [diff] [blame] | 548 | timeout.it_value.tv_sec = nearest_delta_ns / 1000000000; |
| 549 | timeout.it_value.tv_nsec = nearest_delta_ns % 1000000000; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 550 | if (timer_settime(host_timer, 0 /* RELATIVE */, &timeout, NULL)) { |
| 551 | perror("settime"); |
| 552 | fprintf(stderr, "Internal timer error: aborting\n"); |
| 553 | exit(1); |
| 554 | } |
| 555 | } |
| 556 | |
| 557 | #endif /* defined(__linux__) */ |
| 558 | |
Stefan Weil | f26e5a5 | 2011-02-04 22:01:32 +0100 | [diff] [blame] | 559 | #if !defined(_WIN32) |
| 560 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 561 | static int unix_start_timer(struct qemu_alarm_timer *t) |
| 562 | { |
| 563 | struct sigaction act; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 564 | |
| 565 | /* timer signal */ |
| 566 | sigfillset(&act.sa_mask); |
| 567 | act.sa_flags = 0; |
| 568 | act.sa_handler = host_alarm_handler; |
| 569 | |
| 570 | sigaction(SIGALRM, &act, NULL); |
Paolo Bonzini | 8468283 | 2011-06-09 13:10:25 +0200 | [diff] [blame] | 571 | return 0; |
| 572 | } |
| 573 | |
Paolo Bonzini | f3fc6e2 | 2011-03-14 09:45:38 +0100 | [diff] [blame] | 574 | static void unix_rearm_timer(struct qemu_alarm_timer *t, |
| 575 | int64_t nearest_delta_ns) |
Paolo Bonzini | 8468283 | 2011-06-09 13:10:25 +0200 | [diff] [blame] | 576 | { |
| 577 | struct itimerval itv; |
Paolo Bonzini | 8468283 | 2011-06-09 13:10:25 +0200 | [diff] [blame] | 578 | int err; |
| 579 | |
Paolo Bonzini | 8468283 | 2011-06-09 13:10:25 +0200 | [diff] [blame] | 580 | if (nearest_delta_ns < MIN_TIMER_REARM_NS) |
| 581 | nearest_delta_ns = MIN_TIMER_REARM_NS; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 582 | |
| 583 | itv.it_interval.tv_sec = 0; |
Paolo Bonzini | 8468283 | 2011-06-09 13:10:25 +0200 | [diff] [blame] | 584 | itv.it_interval.tv_usec = 0; /* 0 for one-shot timer */ |
| 585 | itv.it_value.tv_sec = nearest_delta_ns / 1000000000; |
| 586 | itv.it_value.tv_usec = (nearest_delta_ns % 1000000000) / 1000; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 587 | err = setitimer(ITIMER_REAL, &itv, NULL); |
Paolo Bonzini | 8468283 | 2011-06-09 13:10:25 +0200 | [diff] [blame] | 588 | if (err) { |
| 589 | perror("setitimer"); |
| 590 | fprintf(stderr, "Internal timer error: aborting\n"); |
| 591 | exit(1); |
| 592 | } |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 593 | } |
| 594 | |
| 595 | static void unix_stop_timer(struct qemu_alarm_timer *t) |
| 596 | { |
| 597 | struct itimerval itv; |
| 598 | |
| 599 | memset(&itv, 0, sizeof(itv)); |
| 600 | setitimer(ITIMER_REAL, &itv, NULL); |
| 601 | } |
| 602 | |
| 603 | #endif /* !defined(_WIN32) */ |
| 604 | |
| 605 | |
| 606 | #ifdef _WIN32 |
| 607 | |
Stefan Weil | 2f9cba0 | 2011-04-05 18:34:21 +0200 | [diff] [blame] | 608 | static MMRESULT mm_timer; |
Stefan Weil | 40f08e8 | 2012-04-27 05:34:40 +0000 | [diff] [blame] | 609 | static TIMECAPS mm_tc; |
Stefan Weil | 2f9cba0 | 2011-04-05 18:34:21 +0200 | [diff] [blame] | 610 | |
| 611 | static void CALLBACK mm_alarm_handler(UINT uTimerID, UINT uMsg, |
| 612 | DWORD_PTR dwUser, DWORD_PTR dw1, |
| 613 | DWORD_PTR dw2) |
| 614 | { |
| 615 | struct qemu_alarm_timer *t = alarm_timer; |
| 616 | if (!t) { |
| 617 | return; |
| 618 | } |
Stefan Weil | 8205199 | 2012-04-20 11:27:24 +0200 | [diff] [blame] | 619 | t->expired = true; |
| 620 | t->pending = true; |
| 621 | qemu_notify_event(); |
Stefan Weil | 2f9cba0 | 2011-04-05 18:34:21 +0200 | [diff] [blame] | 622 | } |
| 623 | |
| 624 | static int mm_start_timer(struct qemu_alarm_timer *t) |
| 625 | { |
Stefan Weil | 40f08e8 | 2012-04-27 05:34:40 +0000 | [diff] [blame] | 626 | timeGetDevCaps(&mm_tc, sizeof(mm_tc)); |
Stefan Weil | 2f9cba0 | 2011-04-05 18:34:21 +0200 | [diff] [blame] | 627 | |
Stefan Weil | 40f08e8 | 2012-04-27 05:34:40 +0000 | [diff] [blame] | 628 | timeBeginPeriod(mm_tc.wPeriodMin); |
Stefan Weil | 2f9cba0 | 2011-04-05 18:34:21 +0200 | [diff] [blame] | 629 | |
Stefan Weil | 40f08e8 | 2012-04-27 05:34:40 +0000 | [diff] [blame] | 630 | mm_timer = timeSetEvent(mm_tc.wPeriodMin, /* interval (ms) */ |
| 631 | mm_tc.wPeriodMin, /* resolution */ |
Stefan Weil | 2f9cba0 | 2011-04-05 18:34:21 +0200 | [diff] [blame] | 632 | mm_alarm_handler, /* function */ |
| 633 | (DWORD_PTR)t, /* parameter */ |
Stefan Weil | 8205199 | 2012-04-20 11:27:24 +0200 | [diff] [blame] | 634 | TIME_ONESHOT | TIME_CALLBACK_FUNCTION); |
Stefan Weil | 2f9cba0 | 2011-04-05 18:34:21 +0200 | [diff] [blame] | 635 | |
| 636 | if (!mm_timer) { |
Stefan Weil | 52ef651 | 2012-05-08 19:14:43 +0200 | [diff] [blame] | 637 | fprintf(stderr, "Failed to initialize win32 alarm timer\n"); |
Stefan Weil | 40f08e8 | 2012-04-27 05:34:40 +0000 | [diff] [blame] | 638 | timeEndPeriod(mm_tc.wPeriodMin); |
Stefan Weil | 2f9cba0 | 2011-04-05 18:34:21 +0200 | [diff] [blame] | 639 | return -1; |
| 640 | } |
| 641 | |
| 642 | return 0; |
| 643 | } |
| 644 | |
| 645 | static void mm_stop_timer(struct qemu_alarm_timer *t) |
| 646 | { |
| 647 | timeKillEvent(mm_timer); |
Stefan Weil | 40f08e8 | 2012-04-27 05:34:40 +0000 | [diff] [blame] | 648 | timeEndPeriod(mm_tc.wPeriodMin); |
Stefan Weil | 2f9cba0 | 2011-04-05 18:34:21 +0200 | [diff] [blame] | 649 | } |
| 650 | |
Paolo Bonzini | f3fc6e2 | 2011-03-14 09:45:38 +0100 | [diff] [blame] | 651 | static void mm_rearm_timer(struct qemu_alarm_timer *t, int64_t delta) |
Stefan Weil | 2f9cba0 | 2011-04-05 18:34:21 +0200 | [diff] [blame] | 652 | { |
Stefano Stabellini | 5bfb723 | 2012-04-13 19:35:02 +0100 | [diff] [blame] | 653 | int64_t nearest_delta_ms = delta / 1000000; |
Stefan Weil | 40f08e8 | 2012-04-27 05:34:40 +0000 | [diff] [blame] | 654 | if (nearest_delta_ms < mm_tc.wPeriodMin) { |
| 655 | nearest_delta_ms = mm_tc.wPeriodMin; |
| 656 | } else if (nearest_delta_ms > mm_tc.wPeriodMax) { |
| 657 | nearest_delta_ms = mm_tc.wPeriodMax; |
Stefano Stabellini | 5bfb723 | 2012-04-13 19:35:02 +0100 | [diff] [blame] | 658 | } |
Paolo Bonzini | f3fc6e2 | 2011-03-14 09:45:38 +0100 | [diff] [blame] | 659 | |
| 660 | timeKillEvent(mm_timer); |
Stefan Weil | 40f08e8 | 2012-04-27 05:34:40 +0000 | [diff] [blame] | 661 | mm_timer = timeSetEvent((UINT)nearest_delta_ms, |
| 662 | mm_tc.wPeriodMin, |
Stefan Weil | 2f9cba0 | 2011-04-05 18:34:21 +0200 | [diff] [blame] | 663 | mm_alarm_handler, |
| 664 | (DWORD_PTR)t, |
| 665 | TIME_ONESHOT | TIME_CALLBACK_FUNCTION); |
| 666 | |
| 667 | if (!mm_timer) { |
Stefan Weil | 52ef651 | 2012-05-08 19:14:43 +0200 | [diff] [blame] | 668 | fprintf(stderr, "Failed to re-arm win32 alarm timer\n"); |
Stefan Weil | 40f08e8 | 2012-04-27 05:34:40 +0000 | [diff] [blame] | 669 | timeEndPeriod(mm_tc.wPeriodMin); |
Stefan Weil | 2f9cba0 | 2011-04-05 18:34:21 +0200 | [diff] [blame] | 670 | exit(1); |
| 671 | } |
| 672 | } |
| 673 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 674 | static int win32_start_timer(struct qemu_alarm_timer *t) |
| 675 | { |
Paolo Bonzini | 68c23e5 | 2011-03-12 17:43:50 +0100 | [diff] [blame] | 676 | HANDLE hTimer; |
| 677 | BOOLEAN success; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 678 | |
Paolo Bonzini | 68c23e5 | 2011-03-12 17:43:50 +0100 | [diff] [blame] | 679 | /* If you call ChangeTimerQueueTimer on a one-shot timer (its period |
| 680 | is zero) that has already expired, the timer is not updated. Since |
| 681 | creating a new timer is relatively expensive, set a bogus one-hour |
| 682 | interval in the dynticks case. */ |
| 683 | success = CreateTimerQueueTimer(&hTimer, |
| 684 | NULL, |
| 685 | host_alarm_handler, |
| 686 | t, |
| 687 | 1, |
Stefan Weil | 8205199 | 2012-04-20 11:27:24 +0200 | [diff] [blame] | 688 | 3600000, |
Paolo Bonzini | 68c23e5 | 2011-03-12 17:43:50 +0100 | [diff] [blame] | 689 | WT_EXECUTEINTIMERTHREAD); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 690 | |
Paolo Bonzini | 68c23e5 | 2011-03-12 17:43:50 +0100 | [diff] [blame] | 691 | if (!success) { |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 692 | fprintf(stderr, "Failed to initialize win32 alarm timer: %ld\n", |
| 693 | GetLastError()); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 694 | return -1; |
| 695 | } |
| 696 | |
Stefan Weil | cd0544e | 2011-04-10 20:15:09 +0200 | [diff] [blame] | 697 | t->timer = hTimer; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 698 | return 0; |
| 699 | } |
| 700 | |
| 701 | static void win32_stop_timer(struct qemu_alarm_timer *t) |
| 702 | { |
Stefan Weil | cd0544e | 2011-04-10 20:15:09 +0200 | [diff] [blame] | 703 | HANDLE hTimer = t->timer; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 704 | |
Paolo Bonzini | 68c23e5 | 2011-03-12 17:43:50 +0100 | [diff] [blame] | 705 | if (hTimer) { |
| 706 | DeleteTimerQueueTimer(NULL, hTimer, NULL); |
| 707 | } |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 708 | } |
| 709 | |
Paolo Bonzini | f3fc6e2 | 2011-03-14 09:45:38 +0100 | [diff] [blame] | 710 | static void win32_rearm_timer(struct qemu_alarm_timer *t, |
| 711 | int64_t nearest_delta_ns) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 712 | { |
Stefan Weil | cd0544e | 2011-04-10 20:15:09 +0200 | [diff] [blame] | 713 | HANDLE hTimer = t->timer; |
Stefano Stabellini | 5bfb723 | 2012-04-13 19:35:02 +0100 | [diff] [blame] | 714 | int64_t nearest_delta_ms; |
Paolo Bonzini | 68c23e5 | 2011-03-12 17:43:50 +0100 | [diff] [blame] | 715 | BOOLEAN success; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 716 | |
Stefano Stabellini | 5bfb723 | 2012-04-13 19:35:02 +0100 | [diff] [blame] | 717 | nearest_delta_ms = nearest_delta_ns / 1000000; |
Paolo Bonzini | cfced5b | 2011-03-12 17:43:49 +0100 | [diff] [blame] | 718 | if (nearest_delta_ms < 1) { |
| 719 | nearest_delta_ms = 1; |
| 720 | } |
Stefano Stabellini | 5bfb723 | 2012-04-13 19:35:02 +0100 | [diff] [blame] | 721 | /* ULONG_MAX can be 32 bit */ |
| 722 | if (nearest_delta_ms > ULONG_MAX) { |
| 723 | nearest_delta_ms = ULONG_MAX; |
| 724 | } |
Paolo Bonzini | 68c23e5 | 2011-03-12 17:43:50 +0100 | [diff] [blame] | 725 | success = ChangeTimerQueueTimer(NULL, |
| 726 | hTimer, |
Stefano Stabellini | 5bfb723 | 2012-04-13 19:35:02 +0100 | [diff] [blame] | 727 | (unsigned long) nearest_delta_ms, |
Paolo Bonzini | 68c23e5 | 2011-03-12 17:43:50 +0100 | [diff] [blame] | 728 | 3600000); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 729 | |
Paolo Bonzini | 68c23e5 | 2011-03-12 17:43:50 +0100 | [diff] [blame] | 730 | if (!success) { |
| 731 | fprintf(stderr, "Failed to rearm win32 alarm timer: %ld\n", |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 732 | GetLastError()); |
Paolo Bonzini | 68c23e5 | 2011-03-12 17:43:50 +0100 | [diff] [blame] | 733 | exit(-1); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 734 | } |
Paolo Bonzini | 68c23e5 | 2011-03-12 17:43:50 +0100 | [diff] [blame] | 735 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 736 | } |
| 737 | |
| 738 | #endif /* _WIN32 */ |
| 739 | |
Paolo Bonzini | 4260a73 | 2011-09-19 10:18:51 +0200 | [diff] [blame] | 740 | static void quit_timers(void) |
| 741 | { |
| 742 | struct qemu_alarm_timer *t = alarm_timer; |
| 743 | alarm_timer = NULL; |
| 744 | t->stop(t); |
| 745 | } |
| 746 | |
Stefan Weil | 253ecf8 | 2012-11-04 21:42:08 +0100 | [diff] [blame] | 747 | #ifdef CONFIG_POSIX |
Paolo Bonzini | c8122c3 | 2012-11-02 15:43:22 +0100 | [diff] [blame] | 748 | static void reinit_timers(void) |
| 749 | { |
| 750 | struct qemu_alarm_timer *t = alarm_timer; |
| 751 | t->stop(t); |
| 752 | if (t->start(t)) { |
| 753 | fprintf(stderr, "Internal timer error: aborting\n"); |
| 754 | exit(1); |
| 755 | } |
| 756 | qemu_rearm_alarm_timer(t); |
| 757 | } |
Stefan Weil | 253ecf8 | 2012-11-04 21:42:08 +0100 | [diff] [blame] | 758 | #endif /* CONFIG_POSIX */ |
Paolo Bonzini | c8122c3 | 2012-11-02 15:43:22 +0100 | [diff] [blame] | 759 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 760 | int init_timer_alarm(void) |
| 761 | { |
| 762 | struct qemu_alarm_timer *t = NULL; |
| 763 | int i, err = -1; |
| 764 | |
Paolo Bonzini | 744ca8e | 2012-10-29 15:26:28 +0100 | [diff] [blame] | 765 | if (alarm_timer) { |
| 766 | return 0; |
| 767 | } |
| 768 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 769 | for (i = 0; alarm_timers[i].name; i++) { |
| 770 | t = &alarm_timers[i]; |
| 771 | |
| 772 | err = t->start(t); |
| 773 | if (!err) |
| 774 | break; |
| 775 | } |
| 776 | |
| 777 | if (err) { |
| 778 | err = -ENOENT; |
| 779 | goto fail; |
| 780 | } |
| 781 | |
Paolo Bonzini | 4260a73 | 2011-09-19 10:18:51 +0200 | [diff] [blame] | 782 | atexit(quit_timers); |
Paolo Bonzini | c8122c3 | 2012-11-02 15:43:22 +0100 | [diff] [blame] | 783 | #ifdef CONFIG_POSIX |
| 784 | pthread_atfork(NULL, NULL, reinit_timers); |
| 785 | #endif |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 786 | alarm_timer = t; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 787 | return 0; |
| 788 | |
| 789 | fail: |
| 790 | return err; |
| 791 | } |
| 792 | |