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 | |
Alex Bligh | 4e0c652 | 2013-08-21 16:02:43 +0100 | [diff] [blame] | 36 | #ifdef CONFIG_PPOLL |
| 37 | #include <poll.h> |
| 38 | #endif |
| 39 | |
Alex Bligh | cd758dd | 2013-08-21 16:02:44 +0100 | [diff] [blame] | 40 | #ifdef CONFIG_PRCTL_PR_SET_TIMERSLACK |
| 41 | #include <sys/prctl.h> |
| 42 | #endif |
| 43 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 44 | /***********************************************************/ |
| 45 | /* timers */ |
| 46 | |
Alex Bligh | b4049b7 | 2013-08-21 16:03:09 +0100 | [diff] [blame] | 47 | typedef struct QEMUClock { |
Liu Ping Fan | 3c05341 | 2013-09-25 14:21:00 +0800 | [diff] [blame] | 48 | /* We rely on BQL to protect the timerlists */ |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 49 | QLIST_HEAD(, QEMUTimerList) timerlists; |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 50 | |
| 51 | NotifierList reset_notifiers; |
| 52 | int64_t last; |
Stefan Weil | 9a14b29 | 2012-04-20 11:51:58 +0200 | [diff] [blame] | 53 | |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 54 | QEMUClockType type; |
Stefan Weil | 9a14b29 | 2012-04-20 11:51:58 +0200 | [diff] [blame] | 55 | bool enabled; |
Alex Bligh | b4049b7 | 2013-08-21 16:03:09 +0100 | [diff] [blame] | 56 | } QEMUClock; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 57 | |
Alex Bligh | 754d6a5 | 2013-08-21 16:02:48 +0100 | [diff] [blame] | 58 | QEMUTimerListGroup main_loop_tlg; |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 59 | QEMUClock qemu_clocks[QEMU_CLOCK_MAX]; |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 60 | |
| 61 | /* A QEMUTimerList is a list of timers attached to a clock. More |
| 62 | * than one QEMUTimerList can be attached to each clock, for instance |
| 63 | * used by different AioContexts / threads. Each clock also has |
| 64 | * a list of the QEMUTimerLists associated with it, in order that |
| 65 | * reenabling the clock can call all the notifiers. |
| 66 | */ |
| 67 | |
| 68 | struct QEMUTimerList { |
Stefan Weil | 9a14b29 | 2012-04-20 11:51:58 +0200 | [diff] [blame] | 69 | QEMUClock *clock; |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 70 | QemuMutex active_timers_lock; |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 71 | QEMUTimer *active_timers; |
| 72 | QLIST_ENTRY(QEMUTimerList) list; |
Alex Bligh | d5541d8 | 2013-08-21 16:02:50 +0100 | [diff] [blame] | 73 | QEMUTimerListNotifyCB *notify_cb; |
| 74 | void *notify_opaque; |
Liu Ping Fan | 3c05341 | 2013-09-25 14:21:00 +0800 | [diff] [blame] | 75 | |
| 76 | /* lightweight method to mark the end of timerlist's running */ |
| 77 | QemuEvent timers_done_ev; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 78 | }; |
| 79 | |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 80 | /** |
| 81 | * qemu_clock_ptr: |
| 82 | * @type: type of clock |
| 83 | * |
| 84 | * Translate a clock type into a pointer to QEMUClock object. |
| 85 | * |
| 86 | * Returns: a pointer to the QEMUClock object |
| 87 | */ |
Alex Bligh | b4049b7 | 2013-08-21 16:03:09 +0100 | [diff] [blame] | 88 | static inline QEMUClock *qemu_clock_ptr(QEMUClockType type) |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 89 | { |
| 90 | return &qemu_clocks[type]; |
| 91 | } |
| 92 | |
Alex Bligh | e93379b | 2013-08-21 16:02:39 +0100 | [diff] [blame] | 93 | static bool timer_expired_ns(QEMUTimer *timer_head, int64_t current_time) |
Stefan Weil | 45c7b37 | 2011-03-24 21:31:24 +0100 | [diff] [blame] | 94 | { |
| 95 | return timer_head && (timer_head->expire_time <= current_time); |
| 96 | } |
| 97 | |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 98 | QEMUTimerList *timerlist_new(QEMUClockType type, |
| 99 | QEMUTimerListNotifyCB *cb, |
| 100 | void *opaque) |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 101 | { |
| 102 | QEMUTimerList *timer_list; |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 103 | QEMUClock *clock = qemu_clock_ptr(type); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 104 | |
| 105 | timer_list = g_malloc0(sizeof(QEMUTimerList)); |
Liu Ping Fan | 3c05341 | 2013-09-25 14:21:00 +0800 | [diff] [blame] | 106 | qemu_event_init(&timer_list->timers_done_ev, false); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 107 | timer_list->clock = clock; |
Alex Bligh | d5541d8 | 2013-08-21 16:02:50 +0100 | [diff] [blame] | 108 | timer_list->notify_cb = cb; |
| 109 | timer_list->notify_opaque = opaque; |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 110 | qemu_mutex_init(&timer_list->active_timers_lock); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 111 | QLIST_INSERT_HEAD(&clock->timerlists, timer_list, list); |
| 112 | return timer_list; |
| 113 | } |
| 114 | |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 115 | void timerlist_free(QEMUTimerList *timer_list) |
| 116 | { |
| 117 | assert(!timerlist_has_timers(timer_list)); |
| 118 | if (timer_list->clock) { |
| 119 | QLIST_REMOVE(timer_list, list); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 120 | } |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 121 | qemu_mutex_destroy(&timer_list->active_timers_lock); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 122 | g_free(timer_list); |
| 123 | } |
| 124 | |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 125 | static void qemu_clock_init(QEMUClockType type) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 126 | { |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 127 | QEMUClock *clock = qemu_clock_ptr(type); |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 128 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 129 | clock->type = type; |
Stefan Weil | 5e1ec7b | 2012-04-20 10:45:48 +0200 | [diff] [blame] | 130 | clock->enabled = true; |
Paolo Bonzini | 2ff68d0 | 2011-09-12 16:21:44 +0200 | [diff] [blame] | 131 | clock->last = INT64_MIN; |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 132 | QLIST_INIT(&clock->timerlists); |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 133 | notifier_list_init(&clock->reset_notifiers); |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 134 | main_loop_tlg.tl[type] = timerlist_new(type, NULL, NULL); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 135 | } |
| 136 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 137 | bool qemu_clock_use_for_deadline(QEMUClockType type) |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 138 | { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 139 | return !(use_icount && (type == QEMU_CLOCK_VIRTUAL)); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 140 | } |
| 141 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 142 | void qemu_clock_notify(QEMUClockType type) |
Alex Bligh | b1bbfe7 | 2013-08-21 16:02:55 +0100 | [diff] [blame] | 143 | { |
| 144 | QEMUTimerList *timer_list; |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 145 | QEMUClock *clock = qemu_clock_ptr(type); |
Alex Bligh | b1bbfe7 | 2013-08-21 16:02:55 +0100 | [diff] [blame] | 146 | QLIST_FOREACH(timer_list, &clock->timerlists, list) { |
| 147 | timerlist_notify(timer_list); |
| 148 | } |
| 149 | } |
| 150 | |
Liu Ping Fan | 3c05341 | 2013-09-25 14:21:00 +0800 | [diff] [blame] | 151 | /* Disabling the clock will wait for related timerlists to stop |
| 152 | * executing qemu_run_timers. Thus, this functions should not |
| 153 | * be used from the callback of a timer that is based on @clock. |
| 154 | * Doing so would cause a deadlock. |
| 155 | * |
| 156 | * Caller should hold BQL. |
| 157 | */ |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 158 | void qemu_clock_enable(QEMUClockType type, bool enabled) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 159 | { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 160 | QEMUClock *clock = qemu_clock_ptr(type); |
Liu Ping Fan | 3c05341 | 2013-09-25 14:21:00 +0800 | [diff] [blame] | 161 | QEMUTimerList *tl; |
Paolo Bonzini | fbdc14e | 2011-09-27 18:23:14 +0200 | [diff] [blame] | 162 | bool old = clock->enabled; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 163 | clock->enabled = enabled; |
Paolo Bonzini | fbdc14e | 2011-09-27 18:23:14 +0200 | [diff] [blame] | 164 | if (enabled && !old) { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 165 | qemu_clock_notify(type); |
Liu Ping Fan | 3c05341 | 2013-09-25 14:21:00 +0800 | [diff] [blame] | 166 | } else if (!enabled && old) { |
| 167 | QLIST_FOREACH(tl, &clock->timerlists, list) { |
| 168 | qemu_event_wait(&tl->timers_done_ev); |
| 169 | } |
Paolo Bonzini | fbdc14e | 2011-09-27 18:23:14 +0200 | [diff] [blame] | 170 | } |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 171 | } |
| 172 | |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 173 | bool timerlist_has_timers(QEMUTimerList *timer_list) |
Paolo Bonzini | dc2dfcf | 2011-09-12 15:50:16 +0200 | [diff] [blame] | 174 | { |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 175 | return !!timer_list->active_timers; |
Paolo Bonzini | dc2dfcf | 2011-09-12 15:50:16 +0200 | [diff] [blame] | 176 | } |
| 177 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 178 | bool qemu_clock_has_timers(QEMUClockType type) |
Paolo Bonzini | dc2dfcf | 2011-09-12 15:50:16 +0200 | [diff] [blame] | 179 | { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 180 | return timerlist_has_timers( |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 181 | main_loop_tlg.tl[type]); |
Paolo Bonzini | dc2dfcf | 2011-09-12 15:50:16 +0200 | [diff] [blame] | 182 | } |
| 183 | |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 184 | bool timerlist_expired(QEMUTimerList *timer_list) |
| 185 | { |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 186 | int64_t expire_time; |
| 187 | |
| 188 | qemu_mutex_lock(&timer_list->active_timers_lock); |
| 189 | if (!timer_list->active_timers) { |
| 190 | qemu_mutex_unlock(&timer_list->active_timers_lock); |
| 191 | return false; |
| 192 | } |
| 193 | expire_time = timer_list->active_timers->expire_time; |
| 194 | qemu_mutex_unlock(&timer_list->active_timers_lock); |
| 195 | |
| 196 | return expire_time < qemu_clock_get_ns(timer_list->clock->type); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 197 | } |
| 198 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 199 | bool qemu_clock_expired(QEMUClockType type) |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 200 | { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 201 | return timerlist_expired( |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 202 | main_loop_tlg.tl[type]); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 203 | } |
| 204 | |
Alex Bligh | 02a03a9 | 2013-08-21 16:02:41 +0100 | [diff] [blame] | 205 | /* |
| 206 | * As above, but return -1 for no deadline, and do not cap to 2^32 |
| 207 | * as we know the result is always positive. |
| 208 | */ |
| 209 | |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 210 | int64_t timerlist_deadline_ns(QEMUTimerList *timer_list) |
Alex Bligh | 02a03a9 | 2013-08-21 16:02:41 +0100 | [diff] [blame] | 211 | { |
| 212 | int64_t delta; |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 213 | int64_t expire_time; |
Alex Bligh | 02a03a9 | 2013-08-21 16:02:41 +0100 | [diff] [blame] | 214 | |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 215 | if (!timer_list->clock->enabled) { |
Alex Bligh | 02a03a9 | 2013-08-21 16:02:41 +0100 | [diff] [blame] | 216 | return -1; |
| 217 | } |
| 218 | |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 219 | /* The active timers list may be modified before the caller uses our return |
| 220 | * value but ->notify_cb() is called when the deadline changes. Therefore |
| 221 | * the caller should notice the change and there is no race condition. |
| 222 | */ |
| 223 | qemu_mutex_lock(&timer_list->active_timers_lock); |
| 224 | if (!timer_list->active_timers) { |
| 225 | qemu_mutex_unlock(&timer_list->active_timers_lock); |
| 226 | return -1; |
| 227 | } |
| 228 | expire_time = timer_list->active_timers->expire_time; |
| 229 | qemu_mutex_unlock(&timer_list->active_timers_lock); |
| 230 | |
| 231 | delta = expire_time - qemu_clock_get_ns(timer_list->clock->type); |
Alex Bligh | 02a03a9 | 2013-08-21 16:02:41 +0100 | [diff] [blame] | 232 | |
| 233 | if (delta <= 0) { |
| 234 | return 0; |
| 235 | } |
| 236 | |
| 237 | return delta; |
| 238 | } |
| 239 | |
Alex Bligh | ac70aaf | 2013-08-21 16:02:57 +0100 | [diff] [blame] | 240 | /* Calculate the soonest deadline across all timerlists attached |
| 241 | * to the clock. This is used for the icount timeout so we |
| 242 | * ignore whether or not the clock should be used in deadline |
| 243 | * calculations. |
| 244 | */ |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 245 | int64_t qemu_clock_deadline_ns_all(QEMUClockType type) |
Alex Bligh | ac70aaf | 2013-08-21 16:02:57 +0100 | [diff] [blame] | 246 | { |
| 247 | int64_t deadline = -1; |
| 248 | QEMUTimerList *timer_list; |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 249 | QEMUClock *clock = qemu_clock_ptr(type); |
Alex Bligh | ac70aaf | 2013-08-21 16:02:57 +0100 | [diff] [blame] | 250 | QLIST_FOREACH(timer_list, &clock->timerlists, list) { |
| 251 | deadline = qemu_soonest_timeout(deadline, |
| 252 | timerlist_deadline_ns(timer_list)); |
| 253 | } |
| 254 | return deadline; |
| 255 | } |
| 256 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 257 | QEMUClockType timerlist_get_clock(QEMUTimerList *timer_list) |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 258 | { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 259 | return timer_list->clock->type; |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 260 | } |
| 261 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 262 | QEMUTimerList *qemu_clock_get_main_loop_timerlist(QEMUClockType type) |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 263 | { |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 264 | return main_loop_tlg.tl[type]; |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 265 | } |
| 266 | |
Alex Bligh | d5541d8 | 2013-08-21 16:02:50 +0100 | [diff] [blame] | 267 | void timerlist_notify(QEMUTimerList *timer_list) |
| 268 | { |
| 269 | if (timer_list->notify_cb) { |
| 270 | timer_list->notify_cb(timer_list->notify_opaque); |
| 271 | } else { |
| 272 | qemu_notify_event(); |
| 273 | } |
| 274 | } |
| 275 | |
Alex Bligh | 02a03a9 | 2013-08-21 16:02:41 +0100 | [diff] [blame] | 276 | /* Transition function to convert a nanosecond timeout to ms |
| 277 | * This is used where a system does not support ppoll |
| 278 | */ |
| 279 | int qemu_timeout_ns_to_ms(int64_t ns) |
| 280 | { |
| 281 | int64_t ms; |
| 282 | if (ns < 0) { |
| 283 | return -1; |
| 284 | } |
| 285 | |
| 286 | if (!ns) { |
| 287 | return 0; |
| 288 | } |
| 289 | |
| 290 | /* Always round up, because it's better to wait too long than to wait too |
| 291 | * little and effectively busy-wait |
| 292 | */ |
| 293 | ms = (ns + SCALE_MS - 1) / SCALE_MS; |
| 294 | |
| 295 | /* To avoid overflow problems, limit this to 2^31, i.e. approx 25 days */ |
| 296 | if (ms > (int64_t) INT32_MAX) { |
| 297 | ms = INT32_MAX; |
| 298 | } |
| 299 | |
| 300 | return (int) ms; |
| 301 | } |
| 302 | |
| 303 | |
Alex Bligh | 4e0c652 | 2013-08-21 16:02:43 +0100 | [diff] [blame] | 304 | /* qemu implementation of g_poll which uses a nanosecond timeout but is |
| 305 | * otherwise identical to g_poll |
| 306 | */ |
| 307 | int qemu_poll_ns(GPollFD *fds, guint nfds, int64_t timeout) |
| 308 | { |
| 309 | #ifdef CONFIG_PPOLL |
| 310 | if (timeout < 0) { |
| 311 | return ppoll((struct pollfd *)fds, nfds, NULL, NULL); |
| 312 | } else { |
| 313 | struct timespec ts; |
| 314 | ts.tv_sec = timeout / 1000000000LL; |
| 315 | ts.tv_nsec = timeout % 1000000000LL; |
| 316 | return ppoll((struct pollfd *)fds, nfds, &ts, NULL); |
| 317 | } |
| 318 | #else |
| 319 | return g_poll(fds, nfds, qemu_timeout_ns_to_ms(timeout)); |
| 320 | #endif |
| 321 | } |
| 322 | |
| 323 | |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 324 | void timer_init(QEMUTimer *ts, |
| 325 | QEMUTimerList *timer_list, int scale, |
| 326 | QEMUTimerCB *cb, void *opaque) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 327 | { |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 328 | ts->timer_list = timer_list; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 329 | ts->cb = cb; |
| 330 | ts->opaque = opaque; |
Paolo Bonzini | 4a99874 | 2011-03-11 16:33:58 +0100 | [diff] [blame] | 331 | ts->scale = scale; |
Paolo Bonzini | 3db1ee7 | 2013-09-12 11:02:20 +0200 | [diff] [blame] | 332 | ts->expire_time = -1; |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 333 | } |
| 334 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 335 | void timer_free(QEMUTimer *ts) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 336 | { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 337 | g_free(ts); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 338 | } |
| 339 | |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 340 | static void timer_del_locked(QEMUTimerList *timer_list, QEMUTimer *ts) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 341 | { |
| 342 | QEMUTimer **pt, *t; |
| 343 | |
Paolo Bonzini | 3db1ee7 | 2013-09-12 11:02:20 +0200 | [diff] [blame] | 344 | ts->expire_time = -1; |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 345 | pt = &timer_list->active_timers; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 346 | for(;;) { |
| 347 | t = *pt; |
| 348 | if (!t) |
| 349 | break; |
| 350 | if (t == ts) { |
| 351 | *pt = t->next; |
| 352 | break; |
| 353 | } |
| 354 | pt = &t->next; |
| 355 | } |
| 356 | } |
| 357 | |
Paolo Bonzini | 0f809e5 | 2013-10-03 15:06:39 +0200 | [diff] [blame] | 358 | static bool timer_mod_ns_locked(QEMUTimerList *timer_list, |
| 359 | QEMUTimer *ts, int64_t expire_time) |
| 360 | { |
| 361 | QEMUTimer **pt, *t; |
| 362 | |
| 363 | /* add the timer in the sorted list */ |
| 364 | pt = &timer_list->active_timers; |
| 365 | for (;;) { |
| 366 | t = *pt; |
| 367 | if (!timer_expired_ns(t, expire_time)) { |
| 368 | break; |
| 369 | } |
| 370 | pt = &t->next; |
| 371 | } |
| 372 | ts->expire_time = MAX(expire_time, 0); |
| 373 | ts->next = *pt; |
| 374 | *pt = ts; |
| 375 | |
| 376 | return pt == &timer_list->active_timers; |
| 377 | } |
| 378 | |
| 379 | static void timerlist_rearm(QEMUTimerList *timer_list) |
| 380 | { |
| 381 | /* Interrupt execution to force deadline recalculation. */ |
| 382 | qemu_clock_warp(timer_list->clock->type); |
| 383 | timerlist_notify(timer_list); |
| 384 | } |
| 385 | |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 386 | /* stop a timer, but do not dealloc it */ |
| 387 | void timer_del(QEMUTimer *ts) |
| 388 | { |
| 389 | QEMUTimerList *timer_list = ts->timer_list; |
| 390 | |
| 391 | qemu_mutex_lock(&timer_list->active_timers_lock); |
| 392 | timer_del_locked(timer_list, ts); |
| 393 | qemu_mutex_unlock(&timer_list->active_timers_lock); |
| 394 | } |
| 395 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 396 | /* modify the current timer so that it will be fired when current_time |
| 397 | >= expire_time. The corresponding callback will be called. */ |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 398 | void timer_mod_ns(QEMUTimer *ts, int64_t expire_time) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 399 | { |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 400 | QEMUTimerList *timer_list = ts->timer_list; |
Paolo Bonzini | 0f809e5 | 2013-10-03 15:06:39 +0200 | [diff] [blame] | 401 | bool rearm; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 402 | |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 403 | qemu_mutex_lock(&timer_list->active_timers_lock); |
| 404 | timer_del_locked(timer_list, ts); |
Paolo Bonzini | 0f809e5 | 2013-10-03 15:06:39 +0200 | [diff] [blame] | 405 | rearm = timer_mod_ns_locked(timer_list, ts, expire_time); |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 406 | qemu_mutex_unlock(&timer_list->active_timers_lock); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 407 | |
Paolo Bonzini | 0f809e5 | 2013-10-03 15:06:39 +0200 | [diff] [blame] | 408 | if (rearm) { |
| 409 | timerlist_rearm(timer_list); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 410 | } |
| 411 | } |
| 412 | |
Paolo Bonzini | add40e9 | 2013-10-03 15:11:43 +0200 | [diff] [blame] | 413 | /* modify the current timer so that it will be fired when current_time |
| 414 | >= expire_time or the current deadline, whichever comes earlier. |
| 415 | The corresponding callback will be called. */ |
| 416 | void timer_mod_anticipate_ns(QEMUTimer *ts, int64_t expire_time) |
| 417 | { |
| 418 | QEMUTimerList *timer_list = ts->timer_list; |
| 419 | bool rearm; |
| 420 | |
| 421 | qemu_mutex_lock(&timer_list->active_timers_lock); |
| 422 | if (ts->expire_time == -1 || ts->expire_time > expire_time) { |
| 423 | if (ts->expire_time != -1) { |
| 424 | timer_del_locked(timer_list, ts); |
| 425 | } |
| 426 | rearm = timer_mod_ns_locked(timer_list, ts, expire_time); |
| 427 | } else { |
| 428 | rearm = false; |
| 429 | } |
| 430 | qemu_mutex_unlock(&timer_list->active_timers_lock); |
| 431 | |
| 432 | if (rearm) { |
| 433 | timerlist_rearm(timer_list); |
| 434 | } |
| 435 | } |
| 436 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 437 | void timer_mod(QEMUTimer *ts, int64_t expire_time) |
Paolo Bonzini | 4a99874 | 2011-03-11 16:33:58 +0100 | [diff] [blame] | 438 | { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 439 | timer_mod_ns(ts, expire_time * ts->scale); |
Paolo Bonzini | 4a99874 | 2011-03-11 16:33:58 +0100 | [diff] [blame] | 440 | } |
| 441 | |
Paolo Bonzini | add40e9 | 2013-10-03 15:11:43 +0200 | [diff] [blame] | 442 | void timer_mod_anticipate(QEMUTimer *ts, int64_t expire_time) |
| 443 | { |
| 444 | timer_mod_anticipate_ns(ts, expire_time * ts->scale); |
| 445 | } |
| 446 | |
Alex Bligh | e93379b | 2013-08-21 16:02:39 +0100 | [diff] [blame] | 447 | bool timer_pending(QEMUTimer *ts) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 448 | { |
Paolo Bonzini | 3db1ee7 | 2013-09-12 11:02:20 +0200 | [diff] [blame] | 449 | return ts->expire_time >= 0; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 450 | } |
| 451 | |
Alex Bligh | e93379b | 2013-08-21 16:02:39 +0100 | [diff] [blame] | 452 | bool timer_expired(QEMUTimer *timer_head, int64_t current_time) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 453 | { |
Alex Bligh | e93379b | 2013-08-21 16:02:39 +0100 | [diff] [blame] | 454 | return timer_expired_ns(timer_head, current_time * timer_head->scale); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 455 | } |
| 456 | |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 457 | bool timerlist_run_timers(QEMUTimerList *timer_list) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 458 | { |
Paolo Bonzini | 144b97c | 2012-09-19 15:52:44 +0200 | [diff] [blame] | 459 | QEMUTimer *ts; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 460 | int64_t current_time; |
Alex Bligh | f9a976b | 2013-08-21 16:02:45 +0100 | [diff] [blame] | 461 | bool progress = false; |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 462 | QEMUTimerCB *cb; |
| 463 | void *opaque; |
| 464 | |
Liu Ping Fan | 3c05341 | 2013-09-25 14:21:00 +0800 | [diff] [blame] | 465 | qemu_event_reset(&timer_list->timers_done_ev); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 466 | if (!timer_list->clock->enabled) { |
Liu Ping Fan | 3c05341 | 2013-09-25 14:21:00 +0800 | [diff] [blame] | 467 | goto out; |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 468 | } |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 469 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 470 | current_time = qemu_clock_get_ns(timer_list->clock->type); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 471 | for(;;) { |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 472 | qemu_mutex_lock(&timer_list->active_timers_lock); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 473 | ts = timer_list->active_timers; |
Alex Bligh | e93379b | 2013-08-21 16:02:39 +0100 | [diff] [blame] | 474 | if (!timer_expired_ns(ts, current_time)) { |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 475 | qemu_mutex_unlock(&timer_list->active_timers_lock); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 476 | break; |
Stefan Weil | 45c7b37 | 2011-03-24 21:31:24 +0100 | [diff] [blame] | 477 | } |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 478 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 479 | /* remove timer from the list before calling the callback */ |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 480 | timer_list->active_timers = ts->next; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 481 | ts->next = NULL; |
Paolo Bonzini | 3db1ee7 | 2013-09-12 11:02:20 +0200 | [diff] [blame] | 482 | ts->expire_time = -1; |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 483 | cb = ts->cb; |
| 484 | opaque = ts->opaque; |
| 485 | qemu_mutex_unlock(&timer_list->active_timers_lock); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 486 | |
| 487 | /* run the callback (the timer list can be modified) */ |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 488 | cb(opaque); |
Alex Bligh | f9a976b | 2013-08-21 16:02:45 +0100 | [diff] [blame] | 489 | progress = true; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 490 | } |
Liu Ping Fan | 3c05341 | 2013-09-25 14:21:00 +0800 | [diff] [blame] | 491 | |
| 492 | out: |
| 493 | qemu_event_set(&timer_list->timers_done_ev); |
Alex Bligh | f9a976b | 2013-08-21 16:02:45 +0100 | [diff] [blame] | 494 | return progress; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 495 | } |
| 496 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 497 | bool qemu_clock_run_timers(QEMUClockType type) |
| 498 | { |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 499 | return timerlist_run_timers(main_loop_tlg.tl[type]); |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 500 | } |
| 501 | |
Alex Bligh | d5541d8 | 2013-08-21 16:02:50 +0100 | [diff] [blame] | 502 | void timerlistgroup_init(QEMUTimerListGroup *tlg, |
| 503 | QEMUTimerListNotifyCB *cb, void *opaque) |
Alex Bligh | 754d6a5 | 2013-08-21 16:02:48 +0100 | [diff] [blame] | 504 | { |
| 505 | QEMUClockType type; |
| 506 | for (type = 0; type < QEMU_CLOCK_MAX; type++) { |
Alex Bligh | d5541d8 | 2013-08-21 16:02:50 +0100 | [diff] [blame] | 507 | tlg->tl[type] = timerlist_new(type, cb, opaque); |
Alex Bligh | 754d6a5 | 2013-08-21 16:02:48 +0100 | [diff] [blame] | 508 | } |
| 509 | } |
| 510 | |
| 511 | void timerlistgroup_deinit(QEMUTimerListGroup *tlg) |
| 512 | { |
| 513 | QEMUClockType type; |
| 514 | for (type = 0; type < QEMU_CLOCK_MAX; type++) { |
| 515 | timerlist_free(tlg->tl[type]); |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | bool timerlistgroup_run_timers(QEMUTimerListGroup *tlg) |
| 520 | { |
| 521 | QEMUClockType type; |
| 522 | bool progress = false; |
| 523 | for (type = 0; type < QEMU_CLOCK_MAX; type++) { |
| 524 | progress |= timerlist_run_timers(tlg->tl[type]); |
| 525 | } |
| 526 | return progress; |
| 527 | } |
| 528 | |
| 529 | int64_t timerlistgroup_deadline_ns(QEMUTimerListGroup *tlg) |
| 530 | { |
| 531 | int64_t deadline = -1; |
| 532 | QEMUClockType type; |
| 533 | for (type = 0; type < QEMU_CLOCK_MAX; type++) { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 534 | if (qemu_clock_use_for_deadline(tlg->tl[type]->clock->type)) { |
Alex Bligh | 754d6a5 | 2013-08-21 16:02:48 +0100 | [diff] [blame] | 535 | deadline = qemu_soonest_timeout(deadline, |
| 536 | timerlist_deadline_ns( |
| 537 | tlg->tl[type])); |
| 538 | } |
| 539 | } |
| 540 | return deadline; |
| 541 | } |
| 542 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 543 | int64_t qemu_clock_get_ns(QEMUClockType type) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 544 | { |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 545 | int64_t now, last; |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 546 | QEMUClock *clock = qemu_clock_ptr(type); |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 547 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 548 | switch (type) { |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 549 | case QEMU_CLOCK_REALTIME: |
| 550 | return get_clock(); |
| 551 | default: |
| 552 | case QEMU_CLOCK_VIRTUAL: |
| 553 | if (use_icount) { |
| 554 | return cpu_get_icount(); |
| 555 | } else { |
| 556 | return cpu_get_clock(); |
| 557 | } |
| 558 | case QEMU_CLOCK_HOST: |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 559 | now = get_clock_realtime(); |
| 560 | last = clock->last; |
| 561 | clock->last = now; |
| 562 | if (now < last) { |
| 563 | notifier_list_notify(&clock->reset_notifiers, &now); |
| 564 | } |
| 565 | return now; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 566 | } |
| 567 | } |
| 568 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 569 | void qemu_clock_register_reset_notifier(QEMUClockType type, |
| 570 | Notifier *notifier) |
| 571 | { |
| 572 | QEMUClock *clock = qemu_clock_ptr(type); |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 573 | notifier_list_add(&clock->reset_notifiers, notifier); |
| 574 | } |
| 575 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 576 | void qemu_clock_unregister_reset_notifier(QEMUClockType type, |
| 577 | Notifier *notifier) |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 578 | { |
Paolo Bonzini | 3155252 | 2012-01-13 17:34:01 +0100 | [diff] [blame] | 579 | notifier_remove(notifier); |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 580 | } |
| 581 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 582 | void init_clocks(void) |
| 583 | { |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 584 | QEMUClockType type; |
| 585 | for (type = 0; type < QEMU_CLOCK_MAX; type++) { |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 586 | qemu_clock_init(type); |
Paolo Bonzini | 744ca8e | 2012-10-29 15:26:28 +0100 | [diff] [blame] | 587 | } |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 588 | |
Alex Bligh | cd758dd | 2013-08-21 16:02:44 +0100 | [diff] [blame] | 589 | #ifdef CONFIG_PRCTL_PR_SET_TIMERSLACK |
| 590 | prctl(PR_SET_TIMERSLACK, 1, 0, 0, 0); |
| 591 | #endif |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 592 | } |
| 593 | |
Alex Bligh | e93379b | 2013-08-21 16:02:39 +0100 | [diff] [blame] | 594 | uint64_t timer_expire_time_ns(QEMUTimer *ts) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 595 | { |
Alex Bligh | e93379b | 2013-08-21 16:02:39 +0100 | [diff] [blame] | 596 | return timer_pending(ts) ? ts->expire_time : -1; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 597 | } |
| 598 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 599 | bool qemu_clock_run_all_timers(void) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 600 | { |
Alex Bligh | f9a976b | 2013-08-21 16:02:45 +0100 | [diff] [blame] | 601 | bool progress = false; |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 602 | QEMUClockType type; |
Alex Bligh | 6d32717 | 2013-08-21 16:02:59 +0100 | [diff] [blame] | 603 | |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 604 | for (type = 0; type < QEMU_CLOCK_MAX; type++) { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 605 | progress |= qemu_clock_run_timers(type); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 606 | } |
Peter Portante | 158fd3c | 2012-04-05 11:00:45 -0400 | [diff] [blame] | 607 | |
Alex Bligh | f9a976b | 2013-08-21 16:02:45 +0100 | [diff] [blame] | 608 | return progress; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 609 | } |