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 | |
Peter Maydell | 1ac0206 | 2015-01-20 16:16:40 +0000 | [diff] [blame] | 25 | #include "qemu/main-loop.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 26 | #include "qemu/timer.h" |
Peter Maydell | 1ac0206 | 2015-01-20 16:16:40 +0000 | [diff] [blame] | 27 | |
Anthony Liguori | 30ea833 | 2012-11-02 16:12:53 -0500 | [diff] [blame] | 28 | #ifdef CONFIG_POSIX |
| 29 | #include <pthread.h> |
| 30 | #endif |
Stefan Weil | bff9f8b | 2012-04-20 10:27:06 +0200 | [diff] [blame] | 31 | |
Alex Bligh | 4e0c652 | 2013-08-21 16:02:43 +0100 | [diff] [blame] | 32 | #ifdef CONFIG_PPOLL |
| 33 | #include <poll.h> |
| 34 | #endif |
| 35 | |
Alex Bligh | cd758dd | 2013-08-21 16:02:44 +0100 | [diff] [blame] | 36 | #ifdef CONFIG_PRCTL_PR_SET_TIMERSLACK |
| 37 | #include <sys/prctl.h> |
| 38 | #endif |
| 39 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 40 | /***********************************************************/ |
| 41 | /* timers */ |
| 42 | |
Alex Bligh | b4049b7 | 2013-08-21 16:03:09 +0100 | [diff] [blame] | 43 | typedef struct QEMUClock { |
Liu Ping Fan | 3c05341 | 2013-09-25 14:21:00 +0800 | [diff] [blame] | 44 | /* We rely on BQL to protect the timerlists */ |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 45 | QLIST_HEAD(, QEMUTimerList) timerlists; |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 46 | |
| 47 | NotifierList reset_notifiers; |
| 48 | int64_t last; |
Stefan Weil | 9a14b29 | 2012-04-20 11:51:58 +0200 | [diff] [blame] | 49 | |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 50 | QEMUClockType type; |
Stefan Weil | 9a14b29 | 2012-04-20 11:51:58 +0200 | [diff] [blame] | 51 | bool enabled; |
Alex Bligh | b4049b7 | 2013-08-21 16:03:09 +0100 | [diff] [blame] | 52 | } QEMUClock; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 53 | |
Alex Bligh | 754d6a5 | 2013-08-21 16:02:48 +0100 | [diff] [blame] | 54 | QEMUTimerListGroup main_loop_tlg; |
Stefan Weil | fbdb664 | 2014-05-03 08:12:15 +0200 | [diff] [blame] | 55 | static QEMUClock qemu_clocks[QEMU_CLOCK_MAX]; |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 56 | |
| 57 | /* A QEMUTimerList is a list of timers attached to a clock. More |
| 58 | * than one QEMUTimerList can be attached to each clock, for instance |
| 59 | * used by different AioContexts / threads. Each clock also has |
| 60 | * a list of the QEMUTimerLists associated with it, in order that |
| 61 | * reenabling the clock can call all the notifiers. |
| 62 | */ |
| 63 | |
| 64 | struct QEMUTimerList { |
Stefan Weil | 9a14b29 | 2012-04-20 11:51:58 +0200 | [diff] [blame] | 65 | QEMUClock *clock; |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 66 | QemuMutex active_timers_lock; |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 67 | QEMUTimer *active_timers; |
| 68 | QLIST_ENTRY(QEMUTimerList) list; |
Alex Bligh | d5541d8 | 2013-08-21 16:02:50 +0100 | [diff] [blame] | 69 | QEMUTimerListNotifyCB *notify_cb; |
| 70 | void *notify_opaque; |
Liu Ping Fan | 3c05341 | 2013-09-25 14:21:00 +0800 | [diff] [blame] | 71 | |
| 72 | /* lightweight method to mark the end of timerlist's running */ |
| 73 | QemuEvent timers_done_ev; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 74 | }; |
| 75 | |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 76 | /** |
| 77 | * qemu_clock_ptr: |
| 78 | * @type: type of clock |
| 79 | * |
| 80 | * Translate a clock type into a pointer to QEMUClock object. |
| 81 | * |
| 82 | * Returns: a pointer to the QEMUClock object |
| 83 | */ |
Alex Bligh | b4049b7 | 2013-08-21 16:03:09 +0100 | [diff] [blame] | 84 | static inline QEMUClock *qemu_clock_ptr(QEMUClockType type) |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 85 | { |
| 86 | return &qemu_clocks[type]; |
| 87 | } |
| 88 | |
Alex Bligh | e93379b | 2013-08-21 16:02:39 +0100 | [diff] [blame] | 89 | static bool timer_expired_ns(QEMUTimer *timer_head, int64_t current_time) |
Stefan Weil | 45c7b37 | 2011-03-24 21:31:24 +0100 | [diff] [blame] | 90 | { |
| 91 | return timer_head && (timer_head->expire_time <= current_time); |
| 92 | } |
| 93 | |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 94 | QEMUTimerList *timerlist_new(QEMUClockType type, |
| 95 | QEMUTimerListNotifyCB *cb, |
| 96 | void *opaque) |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 97 | { |
| 98 | QEMUTimerList *timer_list; |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 99 | QEMUClock *clock = qemu_clock_ptr(type); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 100 | |
| 101 | timer_list = g_malloc0(sizeof(QEMUTimerList)); |
Paolo Bonzini | e4efd8a | 2015-07-21 16:07:48 +0200 | [diff] [blame] | 102 | qemu_event_init(&timer_list->timers_done_ev, true); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 103 | timer_list->clock = clock; |
Alex Bligh | d5541d8 | 2013-08-21 16:02:50 +0100 | [diff] [blame] | 104 | timer_list->notify_cb = cb; |
| 105 | timer_list->notify_opaque = opaque; |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 106 | qemu_mutex_init(&timer_list->active_timers_lock); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 107 | QLIST_INSERT_HEAD(&clock->timerlists, timer_list, list); |
| 108 | return timer_list; |
| 109 | } |
| 110 | |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 111 | void timerlist_free(QEMUTimerList *timer_list) |
| 112 | { |
| 113 | assert(!timerlist_has_timers(timer_list)); |
| 114 | if (timer_list->clock) { |
| 115 | QLIST_REMOVE(timer_list, list); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 116 | } |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 117 | qemu_mutex_destroy(&timer_list->active_timers_lock); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 118 | g_free(timer_list); |
| 119 | } |
| 120 | |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 121 | static void qemu_clock_init(QEMUClockType type) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 122 | { |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 123 | QEMUClock *clock = qemu_clock_ptr(type); |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 124 | |
Kirill Batuzov | 02ce232 | 2014-05-06 16:59:53 +0400 | [diff] [blame] | 125 | /* Assert that the clock of type TYPE has not been initialized yet. */ |
| 126 | assert(main_loop_tlg.tl[type] == NULL); |
| 127 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 128 | clock->type = type; |
Stefan Weil | 5e1ec7b | 2012-04-20 10:45:48 +0200 | [diff] [blame] | 129 | clock->enabled = true; |
Paolo Bonzini | 2ff68d0 | 2011-09-12 16:21:44 +0200 | [diff] [blame] | 130 | clock->last = INT64_MIN; |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 131 | QLIST_INIT(&clock->timerlists); |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 132 | notifier_list_init(&clock->reset_notifiers); |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 133 | main_loop_tlg.tl[type] = timerlist_new(type, NULL, NULL); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 134 | } |
| 135 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 136 | bool qemu_clock_use_for_deadline(QEMUClockType type) |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 137 | { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 138 | return !(use_icount && (type == QEMU_CLOCK_VIRTUAL)); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 139 | } |
| 140 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 141 | void qemu_clock_notify(QEMUClockType type) |
Alex Bligh | b1bbfe7 | 2013-08-21 16:02:55 +0100 | [diff] [blame] | 142 | { |
| 143 | QEMUTimerList *timer_list; |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 144 | QEMUClock *clock = qemu_clock_ptr(type); |
Alex Bligh | b1bbfe7 | 2013-08-21 16:02:55 +0100 | [diff] [blame] | 145 | QLIST_FOREACH(timer_list, &clock->timerlists, list) { |
| 146 | timerlist_notify(timer_list); |
| 147 | } |
| 148 | } |
| 149 | |
Liu Ping Fan | 3c05341 | 2013-09-25 14:21:00 +0800 | [diff] [blame] | 150 | /* Disabling the clock will wait for related timerlists to stop |
| 151 | * executing qemu_run_timers. Thus, this functions should not |
| 152 | * be used from the callback of a timer that is based on @clock. |
| 153 | * Doing so would cause a deadlock. |
| 154 | * |
| 155 | * Caller should hold BQL. |
| 156 | */ |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 157 | void qemu_clock_enable(QEMUClockType type, bool enabled) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 158 | { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 159 | QEMUClock *clock = qemu_clock_ptr(type); |
Liu Ping Fan | 3c05341 | 2013-09-25 14:21:00 +0800 | [diff] [blame] | 160 | QEMUTimerList *tl; |
Paolo Bonzini | fbdc14e | 2011-09-27 18:23:14 +0200 | [diff] [blame] | 161 | bool old = clock->enabled; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 162 | clock->enabled = enabled; |
Paolo Bonzini | fbdc14e | 2011-09-27 18:23:14 +0200 | [diff] [blame] | 163 | if (enabled && !old) { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 164 | qemu_clock_notify(type); |
Liu Ping Fan | 3c05341 | 2013-09-25 14:21:00 +0800 | [diff] [blame] | 165 | } else if (!enabled && old) { |
| 166 | QLIST_FOREACH(tl, &clock->timerlists, list) { |
| 167 | qemu_event_wait(&tl->timers_done_ev); |
| 168 | } |
Paolo Bonzini | fbdc14e | 2011-09-27 18:23:14 +0200 | [diff] [blame] | 169 | } |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 170 | } |
| 171 | |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 172 | bool timerlist_has_timers(QEMUTimerList *timer_list) |
Paolo Bonzini | dc2dfcf | 2011-09-12 15:50:16 +0200 | [diff] [blame] | 173 | { |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 174 | return !!timer_list->active_timers; |
Paolo Bonzini | dc2dfcf | 2011-09-12 15:50:16 +0200 | [diff] [blame] | 175 | } |
| 176 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 177 | bool qemu_clock_has_timers(QEMUClockType type) |
Paolo Bonzini | dc2dfcf | 2011-09-12 15:50:16 +0200 | [diff] [blame] | 178 | { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 179 | return timerlist_has_timers( |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 180 | main_loop_tlg.tl[type]); |
Paolo Bonzini | dc2dfcf | 2011-09-12 15:50:16 +0200 | [diff] [blame] | 181 | } |
| 182 | |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 183 | bool timerlist_expired(QEMUTimerList *timer_list) |
| 184 | { |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 185 | int64_t expire_time; |
| 186 | |
| 187 | qemu_mutex_lock(&timer_list->active_timers_lock); |
| 188 | if (!timer_list->active_timers) { |
| 189 | qemu_mutex_unlock(&timer_list->active_timers_lock); |
| 190 | return false; |
| 191 | } |
| 192 | expire_time = timer_list->active_timers->expire_time; |
| 193 | qemu_mutex_unlock(&timer_list->active_timers_lock); |
| 194 | |
| 195 | return expire_time < qemu_clock_get_ns(timer_list->clock->type); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 196 | } |
| 197 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 198 | bool qemu_clock_expired(QEMUClockType type) |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 199 | { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 200 | return timerlist_expired( |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 201 | main_loop_tlg.tl[type]); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 202 | } |
| 203 | |
Alex Bligh | 02a03a9 | 2013-08-21 16:02:41 +0100 | [diff] [blame] | 204 | /* |
| 205 | * As above, but return -1 for no deadline, and do not cap to 2^32 |
| 206 | * as we know the result is always positive. |
| 207 | */ |
| 208 | |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 209 | int64_t timerlist_deadline_ns(QEMUTimerList *timer_list) |
Alex Bligh | 02a03a9 | 2013-08-21 16:02:41 +0100 | [diff] [blame] | 210 | { |
| 211 | int64_t delta; |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 212 | int64_t expire_time; |
Alex Bligh | 02a03a9 | 2013-08-21 16:02:41 +0100 | [diff] [blame] | 213 | |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 214 | if (!timer_list->clock->enabled) { |
Alex Bligh | 02a03a9 | 2013-08-21 16:02:41 +0100 | [diff] [blame] | 215 | return -1; |
| 216 | } |
| 217 | |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 218 | /* The active timers list may be modified before the caller uses our return |
| 219 | * value but ->notify_cb() is called when the deadline changes. Therefore |
| 220 | * the caller should notice the change and there is no race condition. |
| 221 | */ |
| 222 | qemu_mutex_lock(&timer_list->active_timers_lock); |
| 223 | if (!timer_list->active_timers) { |
| 224 | qemu_mutex_unlock(&timer_list->active_timers_lock); |
| 225 | return -1; |
| 226 | } |
| 227 | expire_time = timer_list->active_timers->expire_time; |
| 228 | qemu_mutex_unlock(&timer_list->active_timers_lock); |
| 229 | |
| 230 | delta = expire_time - qemu_clock_get_ns(timer_list->clock->type); |
Alex Bligh | 02a03a9 | 2013-08-21 16:02:41 +0100 | [diff] [blame] | 231 | |
| 232 | if (delta <= 0) { |
| 233 | return 0; |
| 234 | } |
| 235 | |
| 236 | return delta; |
| 237 | } |
| 238 | |
Alex Bligh | ac70aaf | 2013-08-21 16:02:57 +0100 | [diff] [blame] | 239 | /* Calculate the soonest deadline across all timerlists attached |
| 240 | * to the clock. This is used for the icount timeout so we |
| 241 | * ignore whether or not the clock should be used in deadline |
| 242 | * calculations. |
| 243 | */ |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 244 | int64_t qemu_clock_deadline_ns_all(QEMUClockType type) |
Alex Bligh | ac70aaf | 2013-08-21 16:02:57 +0100 | [diff] [blame] | 245 | { |
| 246 | int64_t deadline = -1; |
| 247 | QEMUTimerList *timer_list; |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 248 | QEMUClock *clock = qemu_clock_ptr(type); |
Alex Bligh | ac70aaf | 2013-08-21 16:02:57 +0100 | [diff] [blame] | 249 | QLIST_FOREACH(timer_list, &clock->timerlists, list) { |
| 250 | deadline = qemu_soonest_timeout(deadline, |
| 251 | timerlist_deadline_ns(timer_list)); |
| 252 | } |
| 253 | return deadline; |
| 254 | } |
| 255 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 256 | QEMUClockType timerlist_get_clock(QEMUTimerList *timer_list) |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 257 | { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 258 | return timer_list->clock->type; |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 259 | } |
| 260 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 261 | QEMUTimerList *qemu_clock_get_main_loop_timerlist(QEMUClockType type) |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 262 | { |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 263 | return main_loop_tlg.tl[type]; |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 264 | } |
| 265 | |
Alex Bligh | d5541d8 | 2013-08-21 16:02:50 +0100 | [diff] [blame] | 266 | void timerlist_notify(QEMUTimerList *timer_list) |
| 267 | { |
| 268 | if (timer_list->notify_cb) { |
| 269 | timer_list->notify_cb(timer_list->notify_opaque); |
| 270 | } else { |
| 271 | qemu_notify_event(); |
| 272 | } |
| 273 | } |
| 274 | |
Alex Bligh | 02a03a9 | 2013-08-21 16:02:41 +0100 | [diff] [blame] | 275 | /* Transition function to convert a nanosecond timeout to ms |
| 276 | * This is used where a system does not support ppoll |
| 277 | */ |
| 278 | int qemu_timeout_ns_to_ms(int64_t ns) |
| 279 | { |
| 280 | int64_t ms; |
| 281 | if (ns < 0) { |
| 282 | return -1; |
| 283 | } |
| 284 | |
| 285 | if (!ns) { |
| 286 | return 0; |
| 287 | } |
| 288 | |
| 289 | /* Always round up, because it's better to wait too long than to wait too |
| 290 | * little and effectively busy-wait |
| 291 | */ |
| 292 | ms = (ns + SCALE_MS - 1) / SCALE_MS; |
| 293 | |
| 294 | /* To avoid overflow problems, limit this to 2^31, i.e. approx 25 days */ |
| 295 | if (ms > (int64_t) INT32_MAX) { |
| 296 | ms = INT32_MAX; |
| 297 | } |
| 298 | |
| 299 | return (int) ms; |
| 300 | } |
| 301 | |
| 302 | |
Alex Bligh | 4e0c652 | 2013-08-21 16:02:43 +0100 | [diff] [blame] | 303 | /* qemu implementation of g_poll which uses a nanosecond timeout but is |
| 304 | * otherwise identical to g_poll |
| 305 | */ |
| 306 | int qemu_poll_ns(GPollFD *fds, guint nfds, int64_t timeout) |
| 307 | { |
| 308 | #ifdef CONFIG_PPOLL |
| 309 | if (timeout < 0) { |
| 310 | return ppoll((struct pollfd *)fds, nfds, NULL, NULL); |
| 311 | } else { |
| 312 | struct timespec ts; |
Peter Maydell | 490309f | 2014-11-25 18:21:45 +0000 | [diff] [blame] | 313 | int64_t tvsec = timeout / 1000000000LL; |
| 314 | /* Avoid possibly overflowing and specifying a negative number of |
| 315 | * seconds, which would turn a very long timeout into a busy-wait. |
| 316 | */ |
| 317 | if (tvsec > (int64_t)INT32_MAX) { |
| 318 | tvsec = INT32_MAX; |
| 319 | } |
| 320 | ts.tv_sec = tvsec; |
Alex Bligh | 4e0c652 | 2013-08-21 16:02:43 +0100 | [diff] [blame] | 321 | ts.tv_nsec = timeout % 1000000000LL; |
| 322 | return ppoll((struct pollfd *)fds, nfds, &ts, NULL); |
| 323 | } |
| 324 | #else |
| 325 | return g_poll(fds, nfds, qemu_timeout_ns_to_ms(timeout)); |
| 326 | #endif |
| 327 | } |
| 328 | |
| 329 | |
Paolo Bonzini | f186aa9 | 2014-12-23 21:54:14 +0100 | [diff] [blame] | 330 | void timer_init_tl(QEMUTimer *ts, |
| 331 | QEMUTimerList *timer_list, int scale, |
| 332 | QEMUTimerCB *cb, void *opaque) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 333 | { |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 334 | ts->timer_list = timer_list; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 335 | ts->cb = cb; |
| 336 | ts->opaque = opaque; |
Paolo Bonzini | 4a99874 | 2011-03-11 16:33:58 +0100 | [diff] [blame] | 337 | ts->scale = scale; |
Paolo Bonzini | 3db1ee7 | 2013-09-12 11:02:20 +0200 | [diff] [blame] | 338 | ts->expire_time = -1; |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 339 | } |
| 340 | |
Paolo Bonzini | cd1bd53 | 2014-12-24 10:57:04 +0100 | [diff] [blame] | 341 | void timer_deinit(QEMUTimer *ts) |
| 342 | { |
| 343 | assert(ts->expire_time == -1); |
| 344 | ts->timer_list = NULL; |
| 345 | } |
| 346 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 347 | void timer_free(QEMUTimer *ts) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 348 | { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 349 | g_free(ts); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 350 | } |
| 351 | |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 352 | static void timer_del_locked(QEMUTimerList *timer_list, QEMUTimer *ts) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 353 | { |
| 354 | QEMUTimer **pt, *t; |
| 355 | |
Paolo Bonzini | 3db1ee7 | 2013-09-12 11:02:20 +0200 | [diff] [blame] | 356 | ts->expire_time = -1; |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 357 | pt = &timer_list->active_timers; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 358 | for(;;) { |
| 359 | t = *pt; |
| 360 | if (!t) |
| 361 | break; |
| 362 | if (t == ts) { |
| 363 | *pt = t->next; |
| 364 | break; |
| 365 | } |
| 366 | pt = &t->next; |
| 367 | } |
| 368 | } |
| 369 | |
Paolo Bonzini | 0f809e5 | 2013-10-03 15:06:39 +0200 | [diff] [blame] | 370 | static bool timer_mod_ns_locked(QEMUTimerList *timer_list, |
| 371 | QEMUTimer *ts, int64_t expire_time) |
| 372 | { |
| 373 | QEMUTimer **pt, *t; |
| 374 | |
| 375 | /* add the timer in the sorted list */ |
| 376 | pt = &timer_list->active_timers; |
| 377 | for (;;) { |
| 378 | t = *pt; |
| 379 | if (!timer_expired_ns(t, expire_time)) { |
| 380 | break; |
| 381 | } |
| 382 | pt = &t->next; |
| 383 | } |
| 384 | ts->expire_time = MAX(expire_time, 0); |
| 385 | ts->next = *pt; |
| 386 | *pt = ts; |
| 387 | |
| 388 | return pt == &timer_list->active_timers; |
| 389 | } |
| 390 | |
| 391 | static void timerlist_rearm(QEMUTimerList *timer_list) |
| 392 | { |
| 393 | /* Interrupt execution to force deadline recalculation. */ |
| 394 | qemu_clock_warp(timer_list->clock->type); |
| 395 | timerlist_notify(timer_list); |
| 396 | } |
| 397 | |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 398 | /* stop a timer, but do not dealloc it */ |
| 399 | void timer_del(QEMUTimer *ts) |
| 400 | { |
| 401 | QEMUTimerList *timer_list = ts->timer_list; |
| 402 | |
Paolo Bonzini | cd1bd53 | 2014-12-24 10:57:04 +0100 | [diff] [blame] | 403 | if (timer_list) { |
| 404 | qemu_mutex_lock(&timer_list->active_timers_lock); |
| 405 | timer_del_locked(timer_list, ts); |
| 406 | qemu_mutex_unlock(&timer_list->active_timers_lock); |
| 407 | } |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 408 | } |
| 409 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 410 | /* modify the current timer so that it will be fired when current_time |
| 411 | >= expire_time. The corresponding callback will be called. */ |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 412 | void timer_mod_ns(QEMUTimer *ts, int64_t expire_time) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 413 | { |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 414 | QEMUTimerList *timer_list = ts->timer_list; |
Paolo Bonzini | 0f809e5 | 2013-10-03 15:06:39 +0200 | [diff] [blame] | 415 | bool rearm; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 416 | |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 417 | qemu_mutex_lock(&timer_list->active_timers_lock); |
| 418 | timer_del_locked(timer_list, ts); |
Paolo Bonzini | 0f809e5 | 2013-10-03 15:06:39 +0200 | [diff] [blame] | 419 | rearm = timer_mod_ns_locked(timer_list, ts, expire_time); |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 420 | qemu_mutex_unlock(&timer_list->active_timers_lock); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 421 | |
Paolo Bonzini | 0f809e5 | 2013-10-03 15:06:39 +0200 | [diff] [blame] | 422 | if (rearm) { |
| 423 | timerlist_rearm(timer_list); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 424 | } |
| 425 | } |
| 426 | |
Paolo Bonzini | add40e9 | 2013-10-03 15:11:43 +0200 | [diff] [blame] | 427 | /* modify the current timer so that it will be fired when current_time |
| 428 | >= expire_time or the current deadline, whichever comes earlier. |
| 429 | The corresponding callback will be called. */ |
| 430 | void timer_mod_anticipate_ns(QEMUTimer *ts, int64_t expire_time) |
| 431 | { |
| 432 | QEMUTimerList *timer_list = ts->timer_list; |
| 433 | bool rearm; |
| 434 | |
| 435 | qemu_mutex_lock(&timer_list->active_timers_lock); |
| 436 | if (ts->expire_time == -1 || ts->expire_time > expire_time) { |
| 437 | if (ts->expire_time != -1) { |
| 438 | timer_del_locked(timer_list, ts); |
| 439 | } |
| 440 | rearm = timer_mod_ns_locked(timer_list, ts, expire_time); |
| 441 | } else { |
| 442 | rearm = false; |
| 443 | } |
| 444 | qemu_mutex_unlock(&timer_list->active_timers_lock); |
| 445 | |
| 446 | if (rearm) { |
| 447 | timerlist_rearm(timer_list); |
| 448 | } |
| 449 | } |
| 450 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 451 | void timer_mod(QEMUTimer *ts, int64_t expire_time) |
Paolo Bonzini | 4a99874 | 2011-03-11 16:33:58 +0100 | [diff] [blame] | 452 | { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 453 | timer_mod_ns(ts, expire_time * ts->scale); |
Paolo Bonzini | 4a99874 | 2011-03-11 16:33:58 +0100 | [diff] [blame] | 454 | } |
| 455 | |
Paolo Bonzini | add40e9 | 2013-10-03 15:11:43 +0200 | [diff] [blame] | 456 | void timer_mod_anticipate(QEMUTimer *ts, int64_t expire_time) |
| 457 | { |
| 458 | timer_mod_anticipate_ns(ts, expire_time * ts->scale); |
| 459 | } |
| 460 | |
Alex Bligh | e93379b | 2013-08-21 16:02:39 +0100 | [diff] [blame] | 461 | bool timer_pending(QEMUTimer *ts) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 462 | { |
Paolo Bonzini | 3db1ee7 | 2013-09-12 11:02:20 +0200 | [diff] [blame] | 463 | return ts->expire_time >= 0; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 464 | } |
| 465 | |
Alex Bligh | e93379b | 2013-08-21 16:02:39 +0100 | [diff] [blame] | 466 | bool timer_expired(QEMUTimer *timer_head, int64_t current_time) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 467 | { |
Alex Bligh | e93379b | 2013-08-21 16:02:39 +0100 | [diff] [blame] | 468 | return timer_expired_ns(timer_head, current_time * timer_head->scale); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 469 | } |
| 470 | |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 471 | bool timerlist_run_timers(QEMUTimerList *timer_list) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 472 | { |
Paolo Bonzini | 144b97c | 2012-09-19 15:52:44 +0200 | [diff] [blame] | 473 | QEMUTimer *ts; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 474 | int64_t current_time; |
Alex Bligh | f9a976b | 2013-08-21 16:02:45 +0100 | [diff] [blame] | 475 | bool progress = false; |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 476 | QEMUTimerCB *cb; |
| 477 | void *opaque; |
| 478 | |
Liu Ping Fan | 3c05341 | 2013-09-25 14:21:00 +0800 | [diff] [blame] | 479 | qemu_event_reset(&timer_list->timers_done_ev); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 480 | if (!timer_list->clock->enabled) { |
Liu Ping Fan | 3c05341 | 2013-09-25 14:21:00 +0800 | [diff] [blame] | 481 | goto out; |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 482 | } |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 483 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 484 | current_time = qemu_clock_get_ns(timer_list->clock->type); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 485 | for(;;) { |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 486 | qemu_mutex_lock(&timer_list->active_timers_lock); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 487 | ts = timer_list->active_timers; |
Alex Bligh | e93379b | 2013-08-21 16:02:39 +0100 | [diff] [blame] | 488 | if (!timer_expired_ns(ts, current_time)) { |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 489 | qemu_mutex_unlock(&timer_list->active_timers_lock); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 490 | break; |
Stefan Weil | 45c7b37 | 2011-03-24 21:31:24 +0100 | [diff] [blame] | 491 | } |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 492 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 493 | /* remove timer from the list before calling the callback */ |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 494 | timer_list->active_timers = ts->next; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 495 | ts->next = NULL; |
Paolo Bonzini | 3db1ee7 | 2013-09-12 11:02:20 +0200 | [diff] [blame] | 496 | ts->expire_time = -1; |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 497 | cb = ts->cb; |
| 498 | opaque = ts->opaque; |
| 499 | qemu_mutex_unlock(&timer_list->active_timers_lock); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 500 | |
| 501 | /* run the callback (the timer list can be modified) */ |
Stefan Hajnoczi | 978f220 | 2013-09-12 11:02:19 +0200 | [diff] [blame] | 502 | cb(opaque); |
Alex Bligh | f9a976b | 2013-08-21 16:02:45 +0100 | [diff] [blame] | 503 | progress = true; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 504 | } |
Liu Ping Fan | 3c05341 | 2013-09-25 14:21:00 +0800 | [diff] [blame] | 505 | |
| 506 | out: |
| 507 | qemu_event_set(&timer_list->timers_done_ev); |
Alex Bligh | f9a976b | 2013-08-21 16:02:45 +0100 | [diff] [blame] | 508 | return progress; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 509 | } |
| 510 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 511 | bool qemu_clock_run_timers(QEMUClockType type) |
| 512 | { |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 513 | return timerlist_run_timers(main_loop_tlg.tl[type]); |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 514 | } |
| 515 | |
Alex Bligh | d5541d8 | 2013-08-21 16:02:50 +0100 | [diff] [blame] | 516 | void timerlistgroup_init(QEMUTimerListGroup *tlg, |
| 517 | QEMUTimerListNotifyCB *cb, void *opaque) |
Alex Bligh | 754d6a5 | 2013-08-21 16:02:48 +0100 | [diff] [blame] | 518 | { |
| 519 | QEMUClockType type; |
| 520 | for (type = 0; type < QEMU_CLOCK_MAX; type++) { |
Alex Bligh | d5541d8 | 2013-08-21 16:02:50 +0100 | [diff] [blame] | 521 | tlg->tl[type] = timerlist_new(type, cb, opaque); |
Alex Bligh | 754d6a5 | 2013-08-21 16:02:48 +0100 | [diff] [blame] | 522 | } |
| 523 | } |
| 524 | |
| 525 | void timerlistgroup_deinit(QEMUTimerListGroup *tlg) |
| 526 | { |
| 527 | QEMUClockType type; |
| 528 | for (type = 0; type < QEMU_CLOCK_MAX; type++) { |
| 529 | timerlist_free(tlg->tl[type]); |
| 530 | } |
| 531 | } |
| 532 | |
| 533 | bool timerlistgroup_run_timers(QEMUTimerListGroup *tlg) |
| 534 | { |
| 535 | QEMUClockType type; |
| 536 | bool progress = false; |
| 537 | for (type = 0; type < QEMU_CLOCK_MAX; type++) { |
| 538 | progress |= timerlist_run_timers(tlg->tl[type]); |
| 539 | } |
| 540 | return progress; |
| 541 | } |
| 542 | |
| 543 | int64_t timerlistgroup_deadline_ns(QEMUTimerListGroup *tlg) |
| 544 | { |
| 545 | int64_t deadline = -1; |
| 546 | QEMUClockType type; |
| 547 | for (type = 0; type < QEMU_CLOCK_MAX; type++) { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 548 | if (qemu_clock_use_for_deadline(tlg->tl[type]->clock->type)) { |
Alex Bligh | 754d6a5 | 2013-08-21 16:02:48 +0100 | [diff] [blame] | 549 | deadline = qemu_soonest_timeout(deadline, |
| 550 | timerlist_deadline_ns( |
| 551 | tlg->tl[type])); |
| 552 | } |
| 553 | } |
| 554 | return deadline; |
| 555 | } |
| 556 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 557 | int64_t qemu_clock_get_ns(QEMUClockType type) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 558 | { |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 559 | int64_t now, last; |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 560 | QEMUClock *clock = qemu_clock_ptr(type); |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 561 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 562 | switch (type) { |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 563 | case QEMU_CLOCK_REALTIME: |
| 564 | return get_clock(); |
| 565 | default: |
| 566 | case QEMU_CLOCK_VIRTUAL: |
| 567 | if (use_icount) { |
| 568 | return cpu_get_icount(); |
| 569 | } else { |
| 570 | return cpu_get_clock(); |
| 571 | } |
| 572 | case QEMU_CLOCK_HOST: |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 573 | now = get_clock_realtime(); |
| 574 | last = clock->last; |
| 575 | clock->last = now; |
Paul Donohue | fb1a3a0 | 2015-06-12 10:08:45 -0400 | [diff] [blame] | 576 | if (now < last || now > (last + get_max_clock_jump())) { |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 577 | notifier_list_notify(&clock->reset_notifiers, &now); |
| 578 | } |
| 579 | return now; |
Pavel Dovgalyuk | 4e7fa73 | 2014-11-26 13:40:50 +0300 | [diff] [blame] | 580 | case QEMU_CLOCK_VIRTUAL_RT: |
| 581 | return cpu_get_clock(); |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 582 | } |
| 583 | } |
| 584 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 585 | void qemu_clock_register_reset_notifier(QEMUClockType type, |
| 586 | Notifier *notifier) |
| 587 | { |
| 588 | QEMUClock *clock = qemu_clock_ptr(type); |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 589 | notifier_list_add(&clock->reset_notifiers, notifier); |
| 590 | } |
| 591 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 592 | void qemu_clock_unregister_reset_notifier(QEMUClockType type, |
| 593 | Notifier *notifier) |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 594 | { |
Paolo Bonzini | 3155252 | 2012-01-13 17:34:01 +0100 | [diff] [blame] | 595 | notifier_remove(notifier); |
Jan Kiszka | 691a0c9 | 2011-06-20 14:06:27 +0200 | [diff] [blame] | 596 | } |
| 597 | |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 598 | void init_clocks(void) |
| 599 | { |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 600 | QEMUClockType type; |
| 601 | for (type = 0; type < QEMU_CLOCK_MAX; type++) { |
Alex Bligh | 7bf8fbd | 2013-08-21 16:03:03 +0100 | [diff] [blame] | 602 | qemu_clock_init(type); |
Paolo Bonzini | 744ca8e | 2012-10-29 15:26:28 +0100 | [diff] [blame] | 603 | } |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 604 | |
Alex Bligh | cd758dd | 2013-08-21 16:02:44 +0100 | [diff] [blame] | 605 | #ifdef CONFIG_PRCTL_PR_SET_TIMERSLACK |
| 606 | prctl(PR_SET_TIMERSLACK, 1, 0, 0, 0); |
| 607 | #endif |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 608 | } |
| 609 | |
Alex Bligh | e93379b | 2013-08-21 16:02:39 +0100 | [diff] [blame] | 610 | uint64_t timer_expire_time_ns(QEMUTimer *ts) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 611 | { |
Alex Bligh | e93379b | 2013-08-21 16:02:39 +0100 | [diff] [blame] | 612 | return timer_pending(ts) ? ts->expire_time : -1; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 613 | } |
| 614 | |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 615 | bool qemu_clock_run_all_timers(void) |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 616 | { |
Alex Bligh | f9a976b | 2013-08-21 16:02:45 +0100 | [diff] [blame] | 617 | bool progress = false; |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 618 | QEMUClockType type; |
Alex Bligh | 6d32717 | 2013-08-21 16:02:59 +0100 | [diff] [blame] | 619 | |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 620 | for (type = 0; type < QEMU_CLOCK_MAX; type++) { |
Alex Bligh | 40daca5 | 2013-08-21 16:03:02 +0100 | [diff] [blame] | 621 | progress |= qemu_clock_run_timers(type); |
Alex Bligh | ff83c66 | 2013-08-21 16:02:46 +0100 | [diff] [blame] | 622 | } |
Peter Portante | 158fd3c | 2012-04-05 11:00:45 -0400 | [diff] [blame] | 623 | |
Alex Bligh | f9a976b | 2013-08-21 16:02:45 +0100 | [diff] [blame] | 624 | return progress; |
Paolo Bonzini | db1a497 | 2010-03-10 11:38:55 +0100 | [diff] [blame] | 625 | } |