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1 | db1a4972 | Paolo Bonzini | /*
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2 | db1a4972 | Paolo Bonzini | * QEMU System Emulator
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3 | db1a4972 | Paolo Bonzini | *
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4 | db1a4972 | Paolo Bonzini | * Copyright (c) 2003-2008 Fabrice Bellard
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5 | db1a4972 | Paolo Bonzini | *
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6 | db1a4972 | Paolo Bonzini | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | db1a4972 | Paolo Bonzini | * of this software and associated documentation files (the "Software"), to deal
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8 | db1a4972 | Paolo Bonzini | * in the Software without restriction, including without limitation the rights
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9 | db1a4972 | Paolo Bonzini | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | db1a4972 | Paolo Bonzini | * copies of the Software, and to permit persons to whom the Software is
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11 | db1a4972 | Paolo Bonzini | * furnished to do so, subject to the following conditions:
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12 | db1a4972 | Paolo Bonzini | *
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13 | db1a4972 | Paolo Bonzini | * The above copyright notice and this permission notice shall be included in
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14 | db1a4972 | Paolo Bonzini | * all copies or substantial portions of the Software.
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15 | db1a4972 | Paolo Bonzini | *
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16 | db1a4972 | Paolo Bonzini | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | db1a4972 | Paolo Bonzini | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | db1a4972 | Paolo Bonzini | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | db1a4972 | Paolo Bonzini | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | db1a4972 | Paolo Bonzini | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | db1a4972 | Paolo Bonzini | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | db1a4972 | Paolo Bonzini | * THE SOFTWARE.
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23 | db1a4972 | Paolo Bonzini | */
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24 | db1a4972 | Paolo Bonzini | |
25 | db1a4972 | Paolo Bonzini | #include "sysemu.h" |
26 | db1a4972 | Paolo Bonzini | #include "net.h" |
27 | db1a4972 | Paolo Bonzini | #include "monitor.h" |
28 | db1a4972 | Paolo Bonzini | #include "console.h" |
29 | db1a4972 | Paolo Bonzini | |
30 | db1a4972 | Paolo Bonzini | #include "hw/hw.h" |
31 | db1a4972 | Paolo Bonzini | |
32 | bff9f8bf | Stefan Weil | #include "qemu-timer.h" |
33 | bff9f8bf | Stefan Weil | |
34 | db1a4972 | Paolo Bonzini | #ifdef _WIN32
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35 | db1a4972 | Paolo Bonzini | #include <mmsystem.h> |
36 | db1a4972 | Paolo Bonzini | #endif
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37 | db1a4972 | Paolo Bonzini | |
38 | db1a4972 | Paolo Bonzini | /***********************************************************/
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39 | db1a4972 | Paolo Bonzini | /* timers */
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40 | db1a4972 | Paolo Bonzini | |
41 | db1a4972 | Paolo Bonzini | #define QEMU_CLOCK_REALTIME 0 |
42 | db1a4972 | Paolo Bonzini | #define QEMU_CLOCK_VIRTUAL 1 |
43 | db1a4972 | Paolo Bonzini | #define QEMU_CLOCK_HOST 2 |
44 | db1a4972 | Paolo Bonzini | |
45 | db1a4972 | Paolo Bonzini | struct QEMUClock {
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46 | 688eb389 | Paolo Bonzini | QEMUTimer *active_timers; |
47 | 691a0c9c | Jan Kiszka | |
48 | 691a0c9c | Jan Kiszka | NotifierList reset_notifiers; |
49 | 691a0c9c | Jan Kiszka | int64_t last; |
50 | 9a14b298 | Stefan Weil | |
51 | 9a14b298 | Stefan Weil | int type;
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52 | 9a14b298 | Stefan Weil | bool enabled;
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53 | db1a4972 | Paolo Bonzini | }; |
54 | db1a4972 | Paolo Bonzini | |
55 | db1a4972 | Paolo Bonzini | struct QEMUTimer {
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56 | 4a998740 | Paolo Bonzini | int64_t expire_time; /* in nanoseconds */
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57 | 9a14b298 | Stefan Weil | QEMUClock *clock; |
58 | db1a4972 | Paolo Bonzini | QEMUTimerCB *cb; |
59 | db1a4972 | Paolo Bonzini | void *opaque;
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60 | 9a14b298 | Stefan Weil | QEMUTimer *next; |
61 | 9a14b298 | Stefan Weil | int scale;
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62 | db1a4972 | Paolo Bonzini | }; |
63 | db1a4972 | Paolo Bonzini | |
64 | db1a4972 | Paolo Bonzini | struct qemu_alarm_timer {
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65 | db1a4972 | Paolo Bonzini | char const *name; |
66 | db1a4972 | Paolo Bonzini | int (*start)(struct qemu_alarm_timer *t); |
67 | db1a4972 | Paolo Bonzini | void (*stop)(struct qemu_alarm_timer *t); |
68 | f3fc6e2e | Paolo Bonzini | void (*rearm)(struct qemu_alarm_timer *t, int64_t nearest_delta_ns); |
69 | cd0544ee | Stefan Weil | #if defined(__linux__)
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70 | cd0544ee | Stefan Weil | timer_t timer; |
71 | 9a14b298 | Stefan Weil | int fd;
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72 | cd0544ee | Stefan Weil | #elif defined(_WIN32)
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73 | cd0544ee | Stefan Weil | HANDLE timer; |
74 | cd0544ee | Stefan Weil | #endif
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75 | 5e1ec7b2 | Stefan Weil | bool expired;
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76 | 5e1ec7b2 | Stefan Weil | bool pending;
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77 | db1a4972 | Paolo Bonzini | }; |
78 | db1a4972 | Paolo Bonzini | |
79 | db1a4972 | Paolo Bonzini | static struct qemu_alarm_timer *alarm_timer; |
80 | db1a4972 | Paolo Bonzini | |
81 | 45c7b37f | Stefan Weil | static bool qemu_timer_expired_ns(QEMUTimer *timer_head, int64_t current_time) |
82 | 45c7b37f | Stefan Weil | { |
83 | 45c7b37f | Stefan Weil | return timer_head && (timer_head->expire_time <= current_time);
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84 | 45c7b37f | Stefan Weil | } |
85 | 45c7b37f | Stefan Weil | |
86 | f3fc6e2e | Paolo Bonzini | static int64_t qemu_next_alarm_deadline(void) |
87 | f3fc6e2e | Paolo Bonzini | { |
88 | 4ffd16fc | Stefano Stabellini | int64_t delta = INT64_MAX; |
89 | f3fc6e2e | Paolo Bonzini | int64_t rtdelta; |
90 | f3fc6e2e | Paolo Bonzini | |
91 | 4ffd16fc | Stefano Stabellini | if (!use_icount && vm_clock->enabled && vm_clock->active_timers) {
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92 | f3fc6e2e | Paolo Bonzini | delta = vm_clock->active_timers->expire_time - |
93 | f3fc6e2e | Paolo Bonzini | qemu_get_clock_ns(vm_clock); |
94 | f3fc6e2e | Paolo Bonzini | } |
95 | 4ffd16fc | Stefano Stabellini | if (host_clock->enabled && host_clock->active_timers) {
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96 | f3fc6e2e | Paolo Bonzini | int64_t hdelta = host_clock->active_timers->expire_time - |
97 | f3fc6e2e | Paolo Bonzini | qemu_get_clock_ns(host_clock); |
98 | f3fc6e2e | Paolo Bonzini | if (hdelta < delta) {
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99 | f3fc6e2e | Paolo Bonzini | delta = hdelta; |
100 | f3fc6e2e | Paolo Bonzini | } |
101 | f3fc6e2e | Paolo Bonzini | } |
102 | 4ffd16fc | Stefano Stabellini | if (rt_clock->enabled && rt_clock->active_timers) {
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103 | f3fc6e2e | Paolo Bonzini | rtdelta = (rt_clock->active_timers->expire_time - |
104 | f3fc6e2e | Paolo Bonzini | qemu_get_clock_ns(rt_clock)); |
105 | f3fc6e2e | Paolo Bonzini | if (rtdelta < delta) {
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106 | f3fc6e2e | Paolo Bonzini | delta = rtdelta; |
107 | f3fc6e2e | Paolo Bonzini | } |
108 | f3fc6e2e | Paolo Bonzini | } |
109 | f3fc6e2e | Paolo Bonzini | |
110 | f3fc6e2e | Paolo Bonzini | return delta;
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111 | f3fc6e2e | Paolo Bonzini | } |
112 | f3fc6e2e | Paolo Bonzini | |
113 | db1a4972 | Paolo Bonzini | static void qemu_rearm_alarm_timer(struct qemu_alarm_timer *t) |
114 | db1a4972 | Paolo Bonzini | { |
115 | 8227421e | Stefano Stabellini | int64_t nearest_delta_ns = qemu_next_alarm_deadline(); |
116 | 8227421e | Stefano Stabellini | if (nearest_delta_ns < INT64_MAX) {
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117 | 8227421e | Stefano Stabellini | t->rearm(t, nearest_delta_ns); |
118 | f3fc6e2e | Paolo Bonzini | } |
119 | db1a4972 | Paolo Bonzini | } |
120 | db1a4972 | Paolo Bonzini | |
121 | 9c13246a | Paolo Bonzini | /* TODO: MIN_TIMER_REARM_NS should be optimized */
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122 | 9c13246a | Paolo Bonzini | #define MIN_TIMER_REARM_NS 250000 |
123 | db1a4972 | Paolo Bonzini | |
124 | db1a4972 | Paolo Bonzini | #ifdef _WIN32
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125 | db1a4972 | Paolo Bonzini | |
126 | 2f9cba0c | Stefan Weil | static int mm_start_timer(struct qemu_alarm_timer *t); |
127 | 2f9cba0c | Stefan Weil | static void mm_stop_timer(struct qemu_alarm_timer *t); |
128 | f3fc6e2e | Paolo Bonzini | static void mm_rearm_timer(struct qemu_alarm_timer *t, int64_t delta); |
129 | 2f9cba0c | Stefan Weil | |
130 | db1a4972 | Paolo Bonzini | static int win32_start_timer(struct qemu_alarm_timer *t); |
131 | db1a4972 | Paolo Bonzini | static void win32_stop_timer(struct qemu_alarm_timer *t); |
132 | f3fc6e2e | Paolo Bonzini | static void win32_rearm_timer(struct qemu_alarm_timer *t, int64_t delta); |
133 | db1a4972 | Paolo Bonzini | |
134 | db1a4972 | Paolo Bonzini | #else
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135 | db1a4972 | Paolo Bonzini | |
136 | db1a4972 | Paolo Bonzini | static int unix_start_timer(struct qemu_alarm_timer *t); |
137 | db1a4972 | Paolo Bonzini | static void unix_stop_timer(struct qemu_alarm_timer *t); |
138 | f3fc6e2e | Paolo Bonzini | static void unix_rearm_timer(struct qemu_alarm_timer *t, int64_t delta); |
139 | db1a4972 | Paolo Bonzini | |
140 | db1a4972 | Paolo Bonzini | #ifdef __linux__
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141 | db1a4972 | Paolo Bonzini | |
142 | db1a4972 | Paolo Bonzini | static int dynticks_start_timer(struct qemu_alarm_timer *t); |
143 | db1a4972 | Paolo Bonzini | static void dynticks_stop_timer(struct qemu_alarm_timer *t); |
144 | f3fc6e2e | Paolo Bonzini | static void dynticks_rearm_timer(struct qemu_alarm_timer *t, int64_t delta); |
145 | db1a4972 | Paolo Bonzini | |
146 | db1a4972 | Paolo Bonzini | #endif /* __linux__ */ |
147 | db1a4972 | Paolo Bonzini | |
148 | db1a4972 | Paolo Bonzini | #endif /* _WIN32 */ |
149 | db1a4972 | Paolo Bonzini | |
150 | db1a4972 | Paolo Bonzini | static struct qemu_alarm_timer alarm_timers[] = { |
151 | db1a4972 | Paolo Bonzini | #ifndef _WIN32
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152 | db1a4972 | Paolo Bonzini | #ifdef __linux__
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153 | db1a4972 | Paolo Bonzini | {"dynticks", dynticks_start_timer,
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154 | cd0544ee | Stefan Weil | dynticks_stop_timer, dynticks_rearm_timer}, |
155 | db1a4972 | Paolo Bonzini | #endif
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156 | 84682834 | Paolo Bonzini | {"unix", unix_start_timer, unix_stop_timer, unix_rearm_timer},
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157 | db1a4972 | Paolo Bonzini | #else
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158 | cca5de73 | Paolo Bonzini | {"mmtimer", mm_start_timer, mm_stop_timer, mm_rearm_timer},
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159 | cd0544ee | Stefan Weil | {"dynticks", win32_start_timer, win32_stop_timer, win32_rearm_timer},
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160 | db1a4972 | Paolo Bonzini | #endif
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161 | db1a4972 | Paolo Bonzini | {NULL, }
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162 | db1a4972 | Paolo Bonzini | }; |
163 | db1a4972 | Paolo Bonzini | |
164 | db1a4972 | Paolo Bonzini | static void show_available_alarms(void) |
165 | db1a4972 | Paolo Bonzini | { |
166 | db1a4972 | Paolo Bonzini | int i;
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167 | db1a4972 | Paolo Bonzini | |
168 | db1a4972 | Paolo Bonzini | printf("Available alarm timers, in order of precedence:\n");
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169 | db1a4972 | Paolo Bonzini | for (i = 0; alarm_timers[i].name; i++) |
170 | db1a4972 | Paolo Bonzini | printf("%s\n", alarm_timers[i].name);
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171 | db1a4972 | Paolo Bonzini | } |
172 | db1a4972 | Paolo Bonzini | |
173 | db1a4972 | Paolo Bonzini | void configure_alarms(char const *opt) |
174 | db1a4972 | Paolo Bonzini | { |
175 | db1a4972 | Paolo Bonzini | int i;
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176 | db1a4972 | Paolo Bonzini | int cur = 0; |
177 | db1a4972 | Paolo Bonzini | int count = ARRAY_SIZE(alarm_timers) - 1; |
178 | db1a4972 | Paolo Bonzini | char *arg;
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179 | db1a4972 | Paolo Bonzini | char *name;
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180 | db1a4972 | Paolo Bonzini | struct qemu_alarm_timer tmp;
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181 | db1a4972 | Paolo Bonzini | |
182 | c8057f95 | Peter Maydell | if (is_help_option(opt)) {
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183 | db1a4972 | Paolo Bonzini | show_available_alarms(); |
184 | db1a4972 | Paolo Bonzini | exit(0);
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185 | db1a4972 | Paolo Bonzini | } |
186 | db1a4972 | Paolo Bonzini | |
187 | 7267c094 | Anthony Liguori | arg = g_strdup(opt); |
188 | db1a4972 | Paolo Bonzini | |
189 | db1a4972 | Paolo Bonzini | /* Reorder the array */
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190 | db1a4972 | Paolo Bonzini | name = strtok(arg, ",");
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191 | db1a4972 | Paolo Bonzini | while (name) {
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192 | db1a4972 | Paolo Bonzini | for (i = 0; i < count && alarm_timers[i].name; i++) { |
193 | db1a4972 | Paolo Bonzini | if (!strcmp(alarm_timers[i].name, name))
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194 | db1a4972 | Paolo Bonzini | break;
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195 | db1a4972 | Paolo Bonzini | } |
196 | db1a4972 | Paolo Bonzini | |
197 | db1a4972 | Paolo Bonzini | if (i == count) {
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198 | db1a4972 | Paolo Bonzini | fprintf(stderr, "Unknown clock %s\n", name);
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199 | db1a4972 | Paolo Bonzini | goto next;
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200 | db1a4972 | Paolo Bonzini | } |
201 | db1a4972 | Paolo Bonzini | |
202 | db1a4972 | Paolo Bonzini | if (i < cur)
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203 | db1a4972 | Paolo Bonzini | /* Ignore */
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204 | db1a4972 | Paolo Bonzini | goto next;
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205 | db1a4972 | Paolo Bonzini | |
206 | db1a4972 | Paolo Bonzini | /* Swap */
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207 | db1a4972 | Paolo Bonzini | tmp = alarm_timers[i]; |
208 | db1a4972 | Paolo Bonzini | alarm_timers[i] = alarm_timers[cur]; |
209 | db1a4972 | Paolo Bonzini | alarm_timers[cur] = tmp; |
210 | db1a4972 | Paolo Bonzini | |
211 | db1a4972 | Paolo Bonzini | cur++; |
212 | db1a4972 | Paolo Bonzini | next:
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213 | db1a4972 | Paolo Bonzini | name = strtok(NULL, ","); |
214 | db1a4972 | Paolo Bonzini | } |
215 | db1a4972 | Paolo Bonzini | |
216 | 7267c094 | Anthony Liguori | g_free(arg); |
217 | db1a4972 | Paolo Bonzini | |
218 | db1a4972 | Paolo Bonzini | if (cur) {
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219 | db1a4972 | Paolo Bonzini | /* Disable remaining timers */
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220 | db1a4972 | Paolo Bonzini | for (i = cur; i < count; i++)
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221 | db1a4972 | Paolo Bonzini | alarm_timers[i].name = NULL;
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222 | db1a4972 | Paolo Bonzini | } else {
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223 | db1a4972 | Paolo Bonzini | show_available_alarms(); |
224 | db1a4972 | Paolo Bonzini | exit(1);
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225 | db1a4972 | Paolo Bonzini | } |
226 | db1a4972 | Paolo Bonzini | } |
227 | db1a4972 | Paolo Bonzini | |
228 | db1a4972 | Paolo Bonzini | QEMUClock *rt_clock; |
229 | db1a4972 | Paolo Bonzini | QEMUClock *vm_clock; |
230 | db1a4972 | Paolo Bonzini | QEMUClock *host_clock; |
231 | db1a4972 | Paolo Bonzini | |
232 | db1a4972 | Paolo Bonzini | static QEMUClock *qemu_new_clock(int type) |
233 | db1a4972 | Paolo Bonzini | { |
234 | db1a4972 | Paolo Bonzini | QEMUClock *clock; |
235 | 691a0c9c | Jan Kiszka | |
236 | 7267c094 | Anthony Liguori | clock = g_malloc0(sizeof(QEMUClock));
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237 | db1a4972 | Paolo Bonzini | clock->type = type; |
238 | 5e1ec7b2 | Stefan Weil | clock->enabled = true;
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239 | 2ff68d07 | Paolo Bonzini | clock->last = INT64_MIN; |
240 | 691a0c9c | Jan Kiszka | notifier_list_init(&clock->reset_notifiers); |
241 | db1a4972 | Paolo Bonzini | return clock;
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242 | db1a4972 | Paolo Bonzini | } |
243 | db1a4972 | Paolo Bonzini | |
244 | 5e1ec7b2 | Stefan Weil | void qemu_clock_enable(QEMUClock *clock, bool enabled) |
245 | db1a4972 | Paolo Bonzini | { |
246 | fbdc14eb | Paolo Bonzini | bool old = clock->enabled;
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247 | db1a4972 | Paolo Bonzini | clock->enabled = enabled; |
248 | fbdc14eb | Paolo Bonzini | if (enabled && !old) {
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249 | fbdc14eb | Paolo Bonzini | qemu_rearm_alarm_timer(alarm_timer); |
250 | fbdc14eb | Paolo Bonzini | } |
251 | db1a4972 | Paolo Bonzini | } |
252 | db1a4972 | Paolo Bonzini | |
253 | dc2dfcf0 | Paolo Bonzini | int64_t qemu_clock_has_timers(QEMUClock *clock) |
254 | dc2dfcf0 | Paolo Bonzini | { |
255 | dc2dfcf0 | Paolo Bonzini | return !!clock->active_timers;
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256 | dc2dfcf0 | Paolo Bonzini | } |
257 | dc2dfcf0 | Paolo Bonzini | |
258 | dc2dfcf0 | Paolo Bonzini | int64_t qemu_clock_expired(QEMUClock *clock) |
259 | dc2dfcf0 | Paolo Bonzini | { |
260 | dc2dfcf0 | Paolo Bonzini | return (clock->active_timers &&
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261 | dc2dfcf0 | Paolo Bonzini | clock->active_timers->expire_time < qemu_get_clock_ns(clock)); |
262 | dc2dfcf0 | Paolo Bonzini | } |
263 | dc2dfcf0 | Paolo Bonzini | |
264 | dc2dfcf0 | Paolo Bonzini | int64_t qemu_clock_deadline(QEMUClock *clock) |
265 | dc2dfcf0 | Paolo Bonzini | { |
266 | dc2dfcf0 | Paolo Bonzini | /* To avoid problems with overflow limit this to 2^32. */
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267 | dc2dfcf0 | Paolo Bonzini | int64_t delta = INT32_MAX; |
268 | dc2dfcf0 | Paolo Bonzini | |
269 | dc2dfcf0 | Paolo Bonzini | if (clock->active_timers) {
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270 | dc2dfcf0 | Paolo Bonzini | delta = clock->active_timers->expire_time - qemu_get_clock_ns(clock); |
271 | dc2dfcf0 | Paolo Bonzini | } |
272 | dc2dfcf0 | Paolo Bonzini | if (delta < 0) { |
273 | dc2dfcf0 | Paolo Bonzini | delta = 0;
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274 | dc2dfcf0 | Paolo Bonzini | } |
275 | dc2dfcf0 | Paolo Bonzini | return delta;
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276 | dc2dfcf0 | Paolo Bonzini | } |
277 | dc2dfcf0 | Paolo Bonzini | |
278 | 4a998740 | Paolo Bonzini | QEMUTimer *qemu_new_timer(QEMUClock *clock, int scale,
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279 | 4a998740 | Paolo Bonzini | QEMUTimerCB *cb, void *opaque)
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280 | db1a4972 | Paolo Bonzini | { |
281 | db1a4972 | Paolo Bonzini | QEMUTimer *ts; |
282 | db1a4972 | Paolo Bonzini | |
283 | 7267c094 | Anthony Liguori | ts = g_malloc0(sizeof(QEMUTimer));
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284 | db1a4972 | Paolo Bonzini | ts->clock = clock; |
285 | db1a4972 | Paolo Bonzini | ts->cb = cb; |
286 | db1a4972 | Paolo Bonzini | ts->opaque = opaque; |
287 | 4a998740 | Paolo Bonzini | ts->scale = scale; |
288 | db1a4972 | Paolo Bonzini | return ts;
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289 | db1a4972 | Paolo Bonzini | } |
290 | db1a4972 | Paolo Bonzini | |
291 | db1a4972 | Paolo Bonzini | void qemu_free_timer(QEMUTimer *ts)
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292 | db1a4972 | Paolo Bonzini | { |
293 | 7267c094 | Anthony Liguori | g_free(ts); |
294 | db1a4972 | Paolo Bonzini | } |
295 | db1a4972 | Paolo Bonzini | |
296 | db1a4972 | Paolo Bonzini | /* stop a timer, but do not dealloc it */
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297 | db1a4972 | Paolo Bonzini | void qemu_del_timer(QEMUTimer *ts)
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298 | db1a4972 | Paolo Bonzini | { |
299 | db1a4972 | Paolo Bonzini | QEMUTimer **pt, *t; |
300 | db1a4972 | Paolo Bonzini | |
301 | db1a4972 | Paolo Bonzini | /* NOTE: this code must be signal safe because
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302 | db1a4972 | Paolo Bonzini | qemu_timer_expired() can be called from a signal. */
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303 | 688eb389 | Paolo Bonzini | pt = &ts->clock->active_timers; |
304 | db1a4972 | Paolo Bonzini | for(;;) {
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305 | db1a4972 | Paolo Bonzini | t = *pt; |
306 | db1a4972 | Paolo Bonzini | if (!t)
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307 | db1a4972 | Paolo Bonzini | break;
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308 | db1a4972 | Paolo Bonzini | if (t == ts) {
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309 | db1a4972 | Paolo Bonzini | *pt = t->next; |
310 | db1a4972 | Paolo Bonzini | break;
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311 | db1a4972 | Paolo Bonzini | } |
312 | db1a4972 | Paolo Bonzini | pt = &t->next; |
313 | db1a4972 | Paolo Bonzini | } |
314 | db1a4972 | Paolo Bonzini | } |
315 | db1a4972 | Paolo Bonzini | |
316 | db1a4972 | Paolo Bonzini | /* modify the current timer so that it will be fired when current_time
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317 | db1a4972 | Paolo Bonzini | >= expire_time. The corresponding callback will be called. */
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318 | 2ff68d07 | Paolo Bonzini | void qemu_mod_timer_ns(QEMUTimer *ts, int64_t expire_time)
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319 | db1a4972 | Paolo Bonzini | { |
320 | db1a4972 | Paolo Bonzini | QEMUTimer **pt, *t; |
321 | db1a4972 | Paolo Bonzini | |
322 | db1a4972 | Paolo Bonzini | qemu_del_timer(ts); |
323 | db1a4972 | Paolo Bonzini | |
324 | db1a4972 | Paolo Bonzini | /* add the timer in the sorted list */
|
325 | db1a4972 | Paolo Bonzini | /* NOTE: this code must be signal safe because
|
326 | db1a4972 | Paolo Bonzini | qemu_timer_expired() can be called from a signal. */
|
327 | 688eb389 | Paolo Bonzini | pt = &ts->clock->active_timers; |
328 | db1a4972 | Paolo Bonzini | for(;;) {
|
329 | db1a4972 | Paolo Bonzini | t = *pt; |
330 | 45c7b37f | Stefan Weil | if (!qemu_timer_expired_ns(t, expire_time)) {
|
331 | db1a4972 | Paolo Bonzini | break;
|
332 | 45c7b37f | Stefan Weil | } |
333 | db1a4972 | Paolo Bonzini | pt = &t->next; |
334 | db1a4972 | Paolo Bonzini | } |
335 | db1a4972 | Paolo Bonzini | ts->expire_time = expire_time; |
336 | db1a4972 | Paolo Bonzini | ts->next = *pt; |
337 | db1a4972 | Paolo Bonzini | *pt = ts; |
338 | db1a4972 | Paolo Bonzini | |
339 | db1a4972 | Paolo Bonzini | /* Rearm if necessary */
|
340 | 688eb389 | Paolo Bonzini | if (pt == &ts->clock->active_timers) {
|
341 | db1a4972 | Paolo Bonzini | if (!alarm_timer->pending) {
|
342 | db1a4972 | Paolo Bonzini | qemu_rearm_alarm_timer(alarm_timer); |
343 | db1a4972 | Paolo Bonzini | } |
344 | db1a4972 | Paolo Bonzini | /* Interrupt execution to force deadline recalculation. */
|
345 | ab33fcda | Paolo Bonzini | qemu_clock_warp(ts->clock); |
346 | ab33fcda | Paolo Bonzini | if (use_icount) {
|
347 | db1a4972 | Paolo Bonzini | qemu_notify_event(); |
348 | ab33fcda | Paolo Bonzini | } |
349 | db1a4972 | Paolo Bonzini | } |
350 | db1a4972 | Paolo Bonzini | } |
351 | db1a4972 | Paolo Bonzini | |
352 | 4a998740 | Paolo Bonzini | void qemu_mod_timer(QEMUTimer *ts, int64_t expire_time)
|
353 | 4a998740 | Paolo Bonzini | { |
354 | 4a998740 | Paolo Bonzini | qemu_mod_timer_ns(ts, expire_time * ts->scale); |
355 | 4a998740 | Paolo Bonzini | } |
356 | 4a998740 | Paolo Bonzini | |
357 | 5e1ec7b2 | Stefan Weil | bool qemu_timer_pending(QEMUTimer *ts)
|
358 | db1a4972 | Paolo Bonzini | { |
359 | db1a4972 | Paolo Bonzini | QEMUTimer *t; |
360 | 688eb389 | Paolo Bonzini | for (t = ts->clock->active_timers; t != NULL; t = t->next) { |
361 | 5e1ec7b2 | Stefan Weil | if (t == ts) {
|
362 | 5e1ec7b2 | Stefan Weil | return true; |
363 | 5e1ec7b2 | Stefan Weil | } |
364 | db1a4972 | Paolo Bonzini | } |
365 | 5e1ec7b2 | Stefan Weil | return false; |
366 | db1a4972 | Paolo Bonzini | } |
367 | db1a4972 | Paolo Bonzini | |
368 | 5e1ec7b2 | Stefan Weil | bool qemu_timer_expired(QEMUTimer *timer_head, int64_t current_time)
|
369 | db1a4972 | Paolo Bonzini | { |
370 | 45c7b37f | Stefan Weil | return qemu_timer_expired_ns(timer_head, current_time * timer_head->scale);
|
371 | db1a4972 | Paolo Bonzini | } |
372 | db1a4972 | Paolo Bonzini | |
373 | 8156be56 | Paolo Bonzini | void qemu_run_timers(QEMUClock *clock)
|
374 | db1a4972 | Paolo Bonzini | { |
375 | 144b97c2 | Paolo Bonzini | QEMUTimer *ts; |
376 | db1a4972 | Paolo Bonzini | int64_t current_time; |
377 | db1a4972 | Paolo Bonzini | |
378 | db1a4972 | Paolo Bonzini | if (!clock->enabled)
|
379 | db1a4972 | Paolo Bonzini | return;
|
380 | db1a4972 | Paolo Bonzini | |
381 | 4a998740 | Paolo Bonzini | current_time = qemu_get_clock_ns(clock); |
382 | db1a4972 | Paolo Bonzini | for(;;) {
|
383 | 144b97c2 | Paolo Bonzini | ts = clock->active_timers; |
384 | 45c7b37f | Stefan Weil | if (!qemu_timer_expired_ns(ts, current_time)) {
|
385 | db1a4972 | Paolo Bonzini | break;
|
386 | 45c7b37f | Stefan Weil | } |
387 | db1a4972 | Paolo Bonzini | /* remove timer from the list before calling the callback */
|
388 | 144b97c2 | Paolo Bonzini | clock->active_timers = ts->next; |
389 | db1a4972 | Paolo Bonzini | ts->next = NULL;
|
390 | db1a4972 | Paolo Bonzini | |
391 | db1a4972 | Paolo Bonzini | /* run the callback (the timer list can be modified) */
|
392 | db1a4972 | Paolo Bonzini | ts->cb(ts->opaque); |
393 | db1a4972 | Paolo Bonzini | } |
394 | db1a4972 | Paolo Bonzini | } |
395 | db1a4972 | Paolo Bonzini | |
396 | db1a4972 | Paolo Bonzini | int64_t qemu_get_clock_ns(QEMUClock *clock) |
397 | db1a4972 | Paolo Bonzini | { |
398 | 691a0c9c | Jan Kiszka | int64_t now, last; |
399 | 691a0c9c | Jan Kiszka | |
400 | db1a4972 | Paolo Bonzini | switch(clock->type) {
|
401 | db1a4972 | Paolo Bonzini | case QEMU_CLOCK_REALTIME:
|
402 | db1a4972 | Paolo Bonzini | return get_clock();
|
403 | db1a4972 | Paolo Bonzini | default:
|
404 | db1a4972 | Paolo Bonzini | case QEMU_CLOCK_VIRTUAL:
|
405 | db1a4972 | Paolo Bonzini | if (use_icount) {
|
406 | db1a4972 | Paolo Bonzini | return cpu_get_icount();
|
407 | db1a4972 | Paolo Bonzini | } else {
|
408 | db1a4972 | Paolo Bonzini | return cpu_get_clock();
|
409 | db1a4972 | Paolo Bonzini | } |
410 | db1a4972 | Paolo Bonzini | case QEMU_CLOCK_HOST:
|
411 | 691a0c9c | Jan Kiszka | now = get_clock_realtime(); |
412 | 691a0c9c | Jan Kiszka | last = clock->last; |
413 | 691a0c9c | Jan Kiszka | clock->last = now; |
414 | 691a0c9c | Jan Kiszka | if (now < last) {
|
415 | 691a0c9c | Jan Kiszka | notifier_list_notify(&clock->reset_notifiers, &now); |
416 | 691a0c9c | Jan Kiszka | } |
417 | 691a0c9c | Jan Kiszka | return now;
|
418 | db1a4972 | Paolo Bonzini | } |
419 | db1a4972 | Paolo Bonzini | } |
420 | db1a4972 | Paolo Bonzini | |
421 | 691a0c9c | Jan Kiszka | void qemu_register_clock_reset_notifier(QEMUClock *clock, Notifier *notifier)
|
422 | 691a0c9c | Jan Kiszka | { |
423 | 691a0c9c | Jan Kiszka | notifier_list_add(&clock->reset_notifiers, notifier); |
424 | 691a0c9c | Jan Kiszka | } |
425 | 691a0c9c | Jan Kiszka | |
426 | 691a0c9c | Jan Kiszka | void qemu_unregister_clock_reset_notifier(QEMUClock *clock, Notifier *notifier)
|
427 | 691a0c9c | Jan Kiszka | { |
428 | 31552529 | Paolo Bonzini | notifier_remove(notifier); |
429 | 691a0c9c | Jan Kiszka | } |
430 | 691a0c9c | Jan Kiszka | |
431 | db1a4972 | Paolo Bonzini | void init_clocks(void) |
432 | db1a4972 | Paolo Bonzini | { |
433 | db1a4972 | Paolo Bonzini | rt_clock = qemu_new_clock(QEMU_CLOCK_REALTIME); |
434 | db1a4972 | Paolo Bonzini | vm_clock = qemu_new_clock(QEMU_CLOCK_VIRTUAL); |
435 | db1a4972 | Paolo Bonzini | host_clock = qemu_new_clock(QEMU_CLOCK_HOST); |
436 | db1a4972 | Paolo Bonzini | } |
437 | db1a4972 | Paolo Bonzini | |
438 | 2ff68d07 | Paolo Bonzini | uint64_t qemu_timer_expire_time_ns(QEMUTimer *ts) |
439 | db1a4972 | Paolo Bonzini | { |
440 | 2ff68d07 | Paolo Bonzini | return qemu_timer_pending(ts) ? ts->expire_time : -1; |
441 | db1a4972 | Paolo Bonzini | } |
442 | db1a4972 | Paolo Bonzini | |
443 | db1a4972 | Paolo Bonzini | void qemu_run_all_timers(void) |
444 | db1a4972 | Paolo Bonzini | { |
445 | 5e1ec7b2 | Stefan Weil | alarm_timer->pending = false;
|
446 | ca5a2a4b | Paolo Bonzini | |
447 | 158fd3ce | Peter Portante | /* vm time timers */
|
448 | 158fd3ce | Peter Portante | qemu_run_timers(vm_clock); |
449 | 158fd3ce | Peter Portante | qemu_run_timers(rt_clock); |
450 | 158fd3ce | Peter Portante | qemu_run_timers(host_clock); |
451 | 158fd3ce | Peter Portante | |
452 | db1a4972 | Paolo Bonzini | /* rearm timer, if not periodic */
|
453 | db1a4972 | Paolo Bonzini | if (alarm_timer->expired) {
|
454 | 5e1ec7b2 | Stefan Weil | alarm_timer->expired = false;
|
455 | db1a4972 | Paolo Bonzini | qemu_rearm_alarm_timer(alarm_timer); |
456 | db1a4972 | Paolo Bonzini | } |
457 | db1a4972 | Paolo Bonzini | } |
458 | db1a4972 | Paolo Bonzini | |
459 | db1a4972 | Paolo Bonzini | #ifdef _WIN32
|
460 | 68c23e55 | Paolo Bonzini | static void CALLBACK host_alarm_handler(PVOID lpParam, BOOLEAN unused) |
461 | db1a4972 | Paolo Bonzini | #else
|
462 | db1a4972 | Paolo Bonzini | static void host_alarm_handler(int host_signum) |
463 | db1a4972 | Paolo Bonzini | #endif
|
464 | db1a4972 | Paolo Bonzini | { |
465 | db1a4972 | Paolo Bonzini | struct qemu_alarm_timer *t = alarm_timer;
|
466 | db1a4972 | Paolo Bonzini | if (!t)
|
467 | db1a4972 | Paolo Bonzini | return;
|
468 | db1a4972 | Paolo Bonzini | |
469 | 8205199d | Stefan Weil | t->expired = true;
|
470 | 8205199d | Stefan Weil | t->pending = true;
|
471 | 8205199d | Stefan Weil | qemu_notify_event(); |
472 | db1a4972 | Paolo Bonzini | } |
473 | db1a4972 | Paolo Bonzini | |
474 | 4c3d45eb | Paolo Bonzini | #if defined(__linux__)
|
475 | 4c3d45eb | Paolo Bonzini | |
476 | d25f89c9 | Jan Kiszka | #include "compatfd.h" |
477 | d25f89c9 | Jan Kiszka | |
478 | db1a4972 | Paolo Bonzini | static int dynticks_start_timer(struct qemu_alarm_timer *t) |
479 | db1a4972 | Paolo Bonzini | { |
480 | db1a4972 | Paolo Bonzini | struct sigevent ev;
|
481 | db1a4972 | Paolo Bonzini | timer_t host_timer; |
482 | db1a4972 | Paolo Bonzini | struct sigaction act;
|
483 | db1a4972 | Paolo Bonzini | |
484 | db1a4972 | Paolo Bonzini | sigfillset(&act.sa_mask); |
485 | db1a4972 | Paolo Bonzini | act.sa_flags = 0;
|
486 | db1a4972 | Paolo Bonzini | act.sa_handler = host_alarm_handler; |
487 | db1a4972 | Paolo Bonzini | |
488 | db1a4972 | Paolo Bonzini | sigaction(SIGALRM, &act, NULL);
|
489 | db1a4972 | Paolo Bonzini | |
490 | db1a4972 | Paolo Bonzini | /*
|
491 | db1a4972 | Paolo Bonzini | * Initialize ev struct to 0 to avoid valgrind complaining
|
492 | db1a4972 | Paolo Bonzini | * about uninitialized data in timer_create call
|
493 | db1a4972 | Paolo Bonzini | */
|
494 | db1a4972 | Paolo Bonzini | memset(&ev, 0, sizeof(ev)); |
495 | db1a4972 | Paolo Bonzini | ev.sigev_value.sival_int = 0;
|
496 | db1a4972 | Paolo Bonzini | ev.sigev_notify = SIGEV_SIGNAL; |
497 | d25f89c9 | Jan Kiszka | #ifdef SIGEV_THREAD_ID
|
498 | d25f89c9 | Jan Kiszka | if (qemu_signalfd_available()) {
|
499 | d25f89c9 | Jan Kiszka | ev.sigev_notify = SIGEV_THREAD_ID; |
500 | d25f89c9 | Jan Kiszka | ev._sigev_un._tid = qemu_get_thread_id(); |
501 | d25f89c9 | Jan Kiszka | } |
502 | d25f89c9 | Jan Kiszka | #endif /* SIGEV_THREAD_ID */ |
503 | db1a4972 | Paolo Bonzini | ev.sigev_signo = SIGALRM; |
504 | db1a4972 | Paolo Bonzini | |
505 | db1a4972 | Paolo Bonzini | if (timer_create(CLOCK_REALTIME, &ev, &host_timer)) {
|
506 | db1a4972 | Paolo Bonzini | perror("timer_create");
|
507 | db1a4972 | Paolo Bonzini | return -1; |
508 | db1a4972 | Paolo Bonzini | } |
509 | db1a4972 | Paolo Bonzini | |
510 | cd0544ee | Stefan Weil | t->timer = host_timer; |
511 | db1a4972 | Paolo Bonzini | |
512 | db1a4972 | Paolo Bonzini | return 0; |
513 | db1a4972 | Paolo Bonzini | } |
514 | db1a4972 | Paolo Bonzini | |
515 | db1a4972 | Paolo Bonzini | static void dynticks_stop_timer(struct qemu_alarm_timer *t) |
516 | db1a4972 | Paolo Bonzini | { |
517 | cd0544ee | Stefan Weil | timer_t host_timer = t->timer; |
518 | db1a4972 | Paolo Bonzini | |
519 | db1a4972 | Paolo Bonzini | timer_delete(host_timer); |
520 | db1a4972 | Paolo Bonzini | } |
521 | db1a4972 | Paolo Bonzini | |
522 | f3fc6e2e | Paolo Bonzini | static void dynticks_rearm_timer(struct qemu_alarm_timer *t, |
523 | f3fc6e2e | Paolo Bonzini | int64_t nearest_delta_ns) |
524 | db1a4972 | Paolo Bonzini | { |
525 | cd0544ee | Stefan Weil | timer_t host_timer = t->timer; |
526 | db1a4972 | Paolo Bonzini | struct itimerspec timeout;
|
527 | 9c13246a | Paolo Bonzini | int64_t current_ns; |
528 | db1a4972 | Paolo Bonzini | |
529 | 4c3d45eb | Paolo Bonzini | if (nearest_delta_ns < MIN_TIMER_REARM_NS)
|
530 | 4c3d45eb | Paolo Bonzini | nearest_delta_ns = MIN_TIMER_REARM_NS; |
531 | db1a4972 | Paolo Bonzini | |
532 | db1a4972 | Paolo Bonzini | /* check whether a timer is already running */
|
533 | db1a4972 | Paolo Bonzini | if (timer_gettime(host_timer, &timeout)) {
|
534 | db1a4972 | Paolo Bonzini | perror("gettime");
|
535 | db1a4972 | Paolo Bonzini | fprintf(stderr, "Internal timer error: aborting\n");
|
536 | db1a4972 | Paolo Bonzini | exit(1);
|
537 | db1a4972 | Paolo Bonzini | } |
538 | 9c13246a | Paolo Bonzini | current_ns = timeout.it_value.tv_sec * 1000000000LL + timeout.it_value.tv_nsec;
|
539 | 9c13246a | Paolo Bonzini | if (current_ns && current_ns <= nearest_delta_ns)
|
540 | db1a4972 | Paolo Bonzini | return;
|
541 | db1a4972 | Paolo Bonzini | |
542 | db1a4972 | Paolo Bonzini | timeout.it_interval.tv_sec = 0;
|
543 | db1a4972 | Paolo Bonzini | timeout.it_interval.tv_nsec = 0; /* 0 for one-shot timer */ |
544 | 9c13246a | Paolo Bonzini | timeout.it_value.tv_sec = nearest_delta_ns / 1000000000;
|
545 | 9c13246a | Paolo Bonzini | timeout.it_value.tv_nsec = nearest_delta_ns % 1000000000;
|
546 | db1a4972 | Paolo Bonzini | if (timer_settime(host_timer, 0 /* RELATIVE */, &timeout, NULL)) { |
547 | db1a4972 | Paolo Bonzini | perror("settime");
|
548 | db1a4972 | Paolo Bonzini | fprintf(stderr, "Internal timer error: aborting\n");
|
549 | db1a4972 | Paolo Bonzini | exit(1);
|
550 | db1a4972 | Paolo Bonzini | } |
551 | db1a4972 | Paolo Bonzini | } |
552 | db1a4972 | Paolo Bonzini | |
553 | db1a4972 | Paolo Bonzini | #endif /* defined(__linux__) */ |
554 | db1a4972 | Paolo Bonzini | |
555 | f26e5a54 | Stefan Weil | #if !defined(_WIN32)
|
556 | f26e5a54 | Stefan Weil | |
557 | db1a4972 | Paolo Bonzini | static int unix_start_timer(struct qemu_alarm_timer *t) |
558 | db1a4972 | Paolo Bonzini | { |
559 | db1a4972 | Paolo Bonzini | struct sigaction act;
|
560 | db1a4972 | Paolo Bonzini | |
561 | db1a4972 | Paolo Bonzini | /* timer signal */
|
562 | db1a4972 | Paolo Bonzini | sigfillset(&act.sa_mask); |
563 | db1a4972 | Paolo Bonzini | act.sa_flags = 0;
|
564 | db1a4972 | Paolo Bonzini | act.sa_handler = host_alarm_handler; |
565 | db1a4972 | Paolo Bonzini | |
566 | db1a4972 | Paolo Bonzini | sigaction(SIGALRM, &act, NULL);
|
567 | 84682834 | Paolo Bonzini | return 0; |
568 | 84682834 | Paolo Bonzini | } |
569 | db1a4972 | Paolo Bonzini | |
570 | f3fc6e2e | Paolo Bonzini | static void unix_rearm_timer(struct qemu_alarm_timer *t, |
571 | f3fc6e2e | Paolo Bonzini | int64_t nearest_delta_ns) |
572 | 84682834 | Paolo Bonzini | { |
573 | 84682834 | Paolo Bonzini | struct itimerval itv;
|
574 | 84682834 | Paolo Bonzini | int err;
|
575 | db1a4972 | Paolo Bonzini | |
576 | 84682834 | Paolo Bonzini | if (nearest_delta_ns < MIN_TIMER_REARM_NS)
|
577 | 84682834 | Paolo Bonzini | nearest_delta_ns = MIN_TIMER_REARM_NS; |
578 | 84682834 | Paolo Bonzini | |
579 | 84682834 | Paolo Bonzini | itv.it_interval.tv_sec = 0;
|
580 | 84682834 | Paolo Bonzini | itv.it_interval.tv_usec = 0; /* 0 for one-shot timer */ |
581 | 84682834 | Paolo Bonzini | itv.it_value.tv_sec = nearest_delta_ns / 1000000000;
|
582 | 84682834 | Paolo Bonzini | itv.it_value.tv_usec = (nearest_delta_ns % 1000000000) / 1000; |
583 | 84682834 | Paolo Bonzini | err = setitimer(ITIMER_REAL, &itv, NULL);
|
584 | 84682834 | Paolo Bonzini | if (err) {
|
585 | 84682834 | Paolo Bonzini | perror("setitimer");
|
586 | 84682834 | Paolo Bonzini | fprintf(stderr, "Internal timer error: aborting\n");
|
587 | 84682834 | Paolo Bonzini | exit(1);
|
588 | 84682834 | Paolo Bonzini | } |
589 | db1a4972 | Paolo Bonzini | } |
590 | db1a4972 | Paolo Bonzini | |
591 | db1a4972 | Paolo Bonzini | static void unix_stop_timer(struct qemu_alarm_timer *t) |
592 | db1a4972 | Paolo Bonzini | { |
593 | db1a4972 | Paolo Bonzini | struct itimerval itv;
|
594 | db1a4972 | Paolo Bonzini | |
595 | db1a4972 | Paolo Bonzini | memset(&itv, 0, sizeof(itv)); |
596 | db1a4972 | Paolo Bonzini | setitimer(ITIMER_REAL, &itv, NULL);
|
597 | db1a4972 | Paolo Bonzini | } |
598 | db1a4972 | Paolo Bonzini | |
599 | db1a4972 | Paolo Bonzini | #endif /* !defined(_WIN32) */ |
600 | db1a4972 | Paolo Bonzini | |
601 | db1a4972 | Paolo Bonzini | |
602 | db1a4972 | Paolo Bonzini | #ifdef _WIN32
|
603 | db1a4972 | Paolo Bonzini | |
604 | 2f9cba0c | Stefan Weil | static MMRESULT mm_timer;
|
605 | 40f08e87 | Stefan Weil | static TIMECAPS mm_tc;
|
606 | 2f9cba0c | Stefan Weil | |
607 | 2f9cba0c | Stefan Weil | static void CALLBACK mm_alarm_handler(UINT uTimerID, UINT uMsg, |
608 | 2f9cba0c | Stefan Weil | DWORD_PTR dwUser, DWORD_PTR dw1, |
609 | 2f9cba0c | Stefan Weil | DWORD_PTR dw2) |
610 | 2f9cba0c | Stefan Weil | { |
611 | 2f9cba0c | Stefan Weil | struct qemu_alarm_timer *t = alarm_timer;
|
612 | 2f9cba0c | Stefan Weil | if (!t) {
|
613 | 2f9cba0c | Stefan Weil | return;
|
614 | 2f9cba0c | Stefan Weil | } |
615 | 8205199d | Stefan Weil | t->expired = true;
|
616 | 8205199d | Stefan Weil | t->pending = true;
|
617 | 8205199d | Stefan Weil | qemu_notify_event(); |
618 | 2f9cba0c | Stefan Weil | } |
619 | 2f9cba0c | Stefan Weil | |
620 | 2f9cba0c | Stefan Weil | static int mm_start_timer(struct qemu_alarm_timer *t) |
621 | 2f9cba0c | Stefan Weil | { |
622 | 40f08e87 | Stefan Weil | timeGetDevCaps(&mm_tc, sizeof(mm_tc));
|
623 | 2f9cba0c | Stefan Weil | |
624 | 40f08e87 | Stefan Weil | timeBeginPeriod(mm_tc.wPeriodMin); |
625 | 2f9cba0c | Stefan Weil | |
626 | 40f08e87 | Stefan Weil | mm_timer = timeSetEvent(mm_tc.wPeriodMin, /* interval (ms) */
|
627 | 40f08e87 | Stefan Weil | mm_tc.wPeriodMin, /* resolution */
|
628 | 2f9cba0c | Stefan Weil | mm_alarm_handler, /* function */
|
629 | 2f9cba0c | Stefan Weil | (DWORD_PTR)t, /* parameter */
|
630 | 8205199d | Stefan Weil | TIME_ONESHOT | TIME_CALLBACK_FUNCTION); |
631 | 2f9cba0c | Stefan Weil | |
632 | 2f9cba0c | Stefan Weil | if (!mm_timer) {
|
633 | 52ef651f | Stefan Weil | fprintf(stderr, "Failed to initialize win32 alarm timer\n");
|
634 | 40f08e87 | Stefan Weil | timeEndPeriod(mm_tc.wPeriodMin); |
635 | 2f9cba0c | Stefan Weil | return -1; |
636 | 2f9cba0c | Stefan Weil | } |
637 | 2f9cba0c | Stefan Weil | |
638 | 2f9cba0c | Stefan Weil | return 0; |
639 | 2f9cba0c | Stefan Weil | } |
640 | 2f9cba0c | Stefan Weil | |
641 | 2f9cba0c | Stefan Weil | static void mm_stop_timer(struct qemu_alarm_timer *t) |
642 | 2f9cba0c | Stefan Weil | { |
643 | 2f9cba0c | Stefan Weil | timeKillEvent(mm_timer); |
644 | 40f08e87 | Stefan Weil | timeEndPeriod(mm_tc.wPeriodMin); |
645 | 2f9cba0c | Stefan Weil | } |
646 | 2f9cba0c | Stefan Weil | |
647 | f3fc6e2e | Paolo Bonzini | static void mm_rearm_timer(struct qemu_alarm_timer *t, int64_t delta) |
648 | 2f9cba0c | Stefan Weil | { |
649 | 5bfb723f | Stefano Stabellini | int64_t nearest_delta_ms = delta / 1000000;
|
650 | 40f08e87 | Stefan Weil | if (nearest_delta_ms < mm_tc.wPeriodMin) {
|
651 | 40f08e87 | Stefan Weil | nearest_delta_ms = mm_tc.wPeriodMin; |
652 | 40f08e87 | Stefan Weil | } else if (nearest_delta_ms > mm_tc.wPeriodMax) { |
653 | 40f08e87 | Stefan Weil | nearest_delta_ms = mm_tc.wPeriodMax; |
654 | 5bfb723f | Stefano Stabellini | } |
655 | f3fc6e2e | Paolo Bonzini | |
656 | f3fc6e2e | Paolo Bonzini | timeKillEvent(mm_timer); |
657 | 40f08e87 | Stefan Weil | mm_timer = timeSetEvent((UINT)nearest_delta_ms, |
658 | 40f08e87 | Stefan Weil | mm_tc.wPeriodMin, |
659 | 2f9cba0c | Stefan Weil | mm_alarm_handler, |
660 | 2f9cba0c | Stefan Weil | (DWORD_PTR)t, |
661 | 2f9cba0c | Stefan Weil | TIME_ONESHOT | TIME_CALLBACK_FUNCTION); |
662 | 2f9cba0c | Stefan Weil | |
663 | 2f9cba0c | Stefan Weil | if (!mm_timer) {
|
664 | 52ef651f | Stefan Weil | fprintf(stderr, "Failed to re-arm win32 alarm timer\n");
|
665 | 40f08e87 | Stefan Weil | timeEndPeriod(mm_tc.wPeriodMin); |
666 | 2f9cba0c | Stefan Weil | exit(1);
|
667 | 2f9cba0c | Stefan Weil | } |
668 | 2f9cba0c | Stefan Weil | } |
669 | 2f9cba0c | Stefan Weil | |
670 | db1a4972 | Paolo Bonzini | static int win32_start_timer(struct qemu_alarm_timer *t) |
671 | db1a4972 | Paolo Bonzini | { |
672 | 68c23e55 | Paolo Bonzini | HANDLE hTimer; |
673 | 68c23e55 | Paolo Bonzini | BOOLEAN success; |
674 | 68c23e55 | Paolo Bonzini | |
675 | 68c23e55 | Paolo Bonzini | /* If you call ChangeTimerQueueTimer on a one-shot timer (its period
|
676 | 68c23e55 | Paolo Bonzini | is zero) that has already expired, the timer is not updated. Since
|
677 | 68c23e55 | Paolo Bonzini | creating a new timer is relatively expensive, set a bogus one-hour
|
678 | 68c23e55 | Paolo Bonzini | interval in the dynticks case. */
|
679 | 68c23e55 | Paolo Bonzini | success = CreateTimerQueueTimer(&hTimer, |
680 | 68c23e55 | Paolo Bonzini | NULL,
|
681 | 68c23e55 | Paolo Bonzini | host_alarm_handler, |
682 | 68c23e55 | Paolo Bonzini | t, |
683 | 68c23e55 | Paolo Bonzini | 1,
|
684 | 8205199d | Stefan Weil | 3600000,
|
685 | 68c23e55 | Paolo Bonzini | WT_EXECUTEINTIMERTHREAD); |
686 | 68c23e55 | Paolo Bonzini | |
687 | 68c23e55 | Paolo Bonzini | if (!success) {
|
688 | db1a4972 | Paolo Bonzini | fprintf(stderr, "Failed to initialize win32 alarm timer: %ld\n",
|
689 | db1a4972 | Paolo Bonzini | GetLastError()); |
690 | db1a4972 | Paolo Bonzini | return -1; |
691 | db1a4972 | Paolo Bonzini | } |
692 | db1a4972 | Paolo Bonzini | |
693 | cd0544ee | Stefan Weil | t->timer = hTimer; |
694 | db1a4972 | Paolo Bonzini | return 0; |
695 | db1a4972 | Paolo Bonzini | } |
696 | db1a4972 | Paolo Bonzini | |
697 | db1a4972 | Paolo Bonzini | static void win32_stop_timer(struct qemu_alarm_timer *t) |
698 | db1a4972 | Paolo Bonzini | { |
699 | cd0544ee | Stefan Weil | HANDLE hTimer = t->timer; |
700 | db1a4972 | Paolo Bonzini | |
701 | 68c23e55 | Paolo Bonzini | if (hTimer) {
|
702 | 68c23e55 | Paolo Bonzini | DeleteTimerQueueTimer(NULL, hTimer, NULL); |
703 | 68c23e55 | Paolo Bonzini | } |
704 | db1a4972 | Paolo Bonzini | } |
705 | db1a4972 | Paolo Bonzini | |
706 | f3fc6e2e | Paolo Bonzini | static void win32_rearm_timer(struct qemu_alarm_timer *t, |
707 | f3fc6e2e | Paolo Bonzini | int64_t nearest_delta_ns) |
708 | db1a4972 | Paolo Bonzini | { |
709 | cd0544ee | Stefan Weil | HANDLE hTimer = t->timer; |
710 | 5bfb723f | Stefano Stabellini | int64_t nearest_delta_ms; |
711 | 68c23e55 | Paolo Bonzini | BOOLEAN success; |
712 | db1a4972 | Paolo Bonzini | |
713 | 5bfb723f | Stefano Stabellini | nearest_delta_ms = nearest_delta_ns / 1000000;
|
714 | cfced5b2 | Paolo Bonzini | if (nearest_delta_ms < 1) { |
715 | cfced5b2 | Paolo Bonzini | nearest_delta_ms = 1;
|
716 | cfced5b2 | Paolo Bonzini | } |
717 | 5bfb723f | Stefano Stabellini | /* ULONG_MAX can be 32 bit */
|
718 | 5bfb723f | Stefano Stabellini | if (nearest_delta_ms > ULONG_MAX) {
|
719 | 5bfb723f | Stefano Stabellini | nearest_delta_ms = ULONG_MAX; |
720 | 5bfb723f | Stefano Stabellini | } |
721 | 68c23e55 | Paolo Bonzini | success = ChangeTimerQueueTimer(NULL,
|
722 | 68c23e55 | Paolo Bonzini | hTimer, |
723 | 5bfb723f | Stefano Stabellini | (unsigned long) nearest_delta_ms, |
724 | 68c23e55 | Paolo Bonzini | 3600000);
|
725 | db1a4972 | Paolo Bonzini | |
726 | 68c23e55 | Paolo Bonzini | if (!success) {
|
727 | 68c23e55 | Paolo Bonzini | fprintf(stderr, "Failed to rearm win32 alarm timer: %ld\n",
|
728 | 68c23e55 | Paolo Bonzini | GetLastError()); |
729 | 68c23e55 | Paolo Bonzini | exit(-1);
|
730 | db1a4972 | Paolo Bonzini | } |
731 | 68c23e55 | Paolo Bonzini | |
732 | db1a4972 | Paolo Bonzini | } |
733 | db1a4972 | Paolo Bonzini | |
734 | db1a4972 | Paolo Bonzini | #endif /* _WIN32 */ |
735 | db1a4972 | Paolo Bonzini | |
736 | 4260a739 | Paolo Bonzini | static void quit_timers(void) |
737 | 4260a739 | Paolo Bonzini | { |
738 | 4260a739 | Paolo Bonzini | struct qemu_alarm_timer *t = alarm_timer;
|
739 | 4260a739 | Paolo Bonzini | alarm_timer = NULL;
|
740 | 4260a739 | Paolo Bonzini | t->stop(t); |
741 | 4260a739 | Paolo Bonzini | } |
742 | 4260a739 | Paolo Bonzini | |
743 | db1a4972 | Paolo Bonzini | int init_timer_alarm(void) |
744 | db1a4972 | Paolo Bonzini | { |
745 | db1a4972 | Paolo Bonzini | struct qemu_alarm_timer *t = NULL; |
746 | db1a4972 | Paolo Bonzini | int i, err = -1; |
747 | db1a4972 | Paolo Bonzini | |
748 | db1a4972 | Paolo Bonzini | for (i = 0; alarm_timers[i].name; i++) { |
749 | db1a4972 | Paolo Bonzini | t = &alarm_timers[i]; |
750 | db1a4972 | Paolo Bonzini | |
751 | db1a4972 | Paolo Bonzini | err = t->start(t); |
752 | db1a4972 | Paolo Bonzini | if (!err)
|
753 | db1a4972 | Paolo Bonzini | break;
|
754 | db1a4972 | Paolo Bonzini | } |
755 | db1a4972 | Paolo Bonzini | |
756 | db1a4972 | Paolo Bonzini | if (err) {
|
757 | db1a4972 | Paolo Bonzini | err = -ENOENT; |
758 | db1a4972 | Paolo Bonzini | goto fail;
|
759 | db1a4972 | Paolo Bonzini | } |
760 | db1a4972 | Paolo Bonzini | |
761 | 4260a739 | Paolo Bonzini | atexit(quit_timers); |
762 | db1a4972 | Paolo Bonzini | alarm_timer = t; |
763 | db1a4972 | Paolo Bonzini | return 0; |
764 | db1a4972 | Paolo Bonzini | |
765 | db1a4972 | Paolo Bonzini | fail:
|
766 | db1a4972 | Paolo Bonzini | return err;
|
767 | db1a4972 | Paolo Bonzini | } |