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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 | 44459349 | Juergen Lock | #ifdef __FreeBSD__
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35 | 44459349 | Juergen Lock | #include <sys/param.h> |
36 | 44459349 | Juergen Lock | #endif
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37 | db1a4972 | Paolo Bonzini | |
38 | db1a4972 | Paolo Bonzini | #ifdef _WIN32
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39 | db1a4972 | Paolo Bonzini | #include <mmsystem.h> |
40 | db1a4972 | Paolo Bonzini | #endif
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41 | db1a4972 | Paolo Bonzini | |
42 | db1a4972 | Paolo Bonzini | /***********************************************************/
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43 | db1a4972 | Paolo Bonzini | /* timers */
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44 | db1a4972 | Paolo Bonzini | |
45 | db1a4972 | Paolo Bonzini | #define QEMU_CLOCK_REALTIME 0 |
46 | db1a4972 | Paolo Bonzini | #define QEMU_CLOCK_VIRTUAL 1 |
47 | db1a4972 | Paolo Bonzini | #define QEMU_CLOCK_HOST 2 |
48 | db1a4972 | Paolo Bonzini | |
49 | db1a4972 | Paolo Bonzini | struct QEMUClock {
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50 | db1a4972 | Paolo Bonzini | int type;
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51 | db1a4972 | Paolo Bonzini | int enabled;
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52 | ab33fcda | Paolo Bonzini | |
53 | 688eb389 | Paolo Bonzini | QEMUTimer *active_timers; |
54 | 691a0c9c | Jan Kiszka | |
55 | 691a0c9c | Jan Kiszka | NotifierList reset_notifiers; |
56 | 691a0c9c | Jan Kiszka | int64_t last; |
57 | db1a4972 | Paolo Bonzini | }; |
58 | db1a4972 | Paolo Bonzini | |
59 | db1a4972 | Paolo Bonzini | struct QEMUTimer {
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60 | db1a4972 | Paolo Bonzini | QEMUClock *clock; |
61 | 4a998740 | Paolo Bonzini | int64_t expire_time; /* in nanoseconds */
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62 | 4a998740 | Paolo Bonzini | int scale;
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63 | db1a4972 | Paolo Bonzini | QEMUTimerCB *cb; |
64 | db1a4972 | Paolo Bonzini | void *opaque;
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65 | db1a4972 | Paolo Bonzini | struct QEMUTimer *next;
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66 | db1a4972 | Paolo Bonzini | }; |
67 | db1a4972 | Paolo Bonzini | |
68 | db1a4972 | Paolo Bonzini | struct qemu_alarm_timer {
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69 | db1a4972 | Paolo Bonzini | char const *name; |
70 | db1a4972 | Paolo Bonzini | int (*start)(struct qemu_alarm_timer *t); |
71 | db1a4972 | Paolo Bonzini | void (*stop)(struct qemu_alarm_timer *t); |
72 | f3fc6e2e | Paolo Bonzini | void (*rearm)(struct qemu_alarm_timer *t, int64_t nearest_delta_ns); |
73 | cd0544ee | Stefan Weil | #if defined(__linux__)
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74 | cd0544ee | Stefan Weil | int fd;
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75 | cd0544ee | Stefan Weil | timer_t timer; |
76 | cd0544ee | Stefan Weil | #elif defined(_WIN32)
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77 | cd0544ee | Stefan Weil | HANDLE timer; |
78 | cd0544ee | Stefan Weil | #endif
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79 | db1a4972 | Paolo Bonzini | char expired;
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80 | db1a4972 | Paolo Bonzini | char pending;
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81 | db1a4972 | Paolo Bonzini | }; |
82 | db1a4972 | Paolo Bonzini | |
83 | db1a4972 | Paolo Bonzini | static struct qemu_alarm_timer *alarm_timer; |
84 | db1a4972 | Paolo Bonzini | |
85 | 45c7b37f | Stefan Weil | static bool qemu_timer_expired_ns(QEMUTimer *timer_head, int64_t current_time) |
86 | 45c7b37f | Stefan Weil | { |
87 | 45c7b37f | Stefan Weil | return timer_head && (timer_head->expire_time <= current_time);
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88 | 45c7b37f | Stefan Weil | } |
89 | 45c7b37f | Stefan Weil | |
90 | db1a4972 | Paolo Bonzini | static inline int alarm_has_dynticks(struct qemu_alarm_timer *t) |
91 | db1a4972 | Paolo Bonzini | { |
92 | db1a4972 | Paolo Bonzini | return !!t->rearm;
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93 | db1a4972 | Paolo Bonzini | } |
94 | db1a4972 | Paolo Bonzini | |
95 | f3fc6e2e | Paolo Bonzini | static int64_t qemu_next_alarm_deadline(void) |
96 | f3fc6e2e | Paolo Bonzini | { |
97 | 4ffd16fc | Stefano Stabellini | int64_t delta = INT64_MAX; |
98 | f3fc6e2e | Paolo Bonzini | int64_t rtdelta; |
99 | f3fc6e2e | Paolo Bonzini | |
100 | 4ffd16fc | Stefano Stabellini | if (!use_icount && vm_clock->enabled && vm_clock->active_timers) {
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101 | f3fc6e2e | Paolo Bonzini | delta = vm_clock->active_timers->expire_time - |
102 | f3fc6e2e | Paolo Bonzini | qemu_get_clock_ns(vm_clock); |
103 | f3fc6e2e | Paolo Bonzini | } |
104 | 4ffd16fc | Stefano Stabellini | if (host_clock->enabled && host_clock->active_timers) {
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105 | f3fc6e2e | Paolo Bonzini | int64_t hdelta = host_clock->active_timers->expire_time - |
106 | f3fc6e2e | Paolo Bonzini | qemu_get_clock_ns(host_clock); |
107 | f3fc6e2e | Paolo Bonzini | if (hdelta < delta) {
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108 | f3fc6e2e | Paolo Bonzini | delta = hdelta; |
109 | f3fc6e2e | Paolo Bonzini | } |
110 | f3fc6e2e | Paolo Bonzini | } |
111 | 4ffd16fc | Stefano Stabellini | if (rt_clock->enabled && rt_clock->active_timers) {
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112 | f3fc6e2e | Paolo Bonzini | rtdelta = (rt_clock->active_timers->expire_time - |
113 | f3fc6e2e | Paolo Bonzini | qemu_get_clock_ns(rt_clock)); |
114 | f3fc6e2e | Paolo Bonzini | if (rtdelta < delta) {
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115 | f3fc6e2e | Paolo Bonzini | delta = rtdelta; |
116 | f3fc6e2e | Paolo Bonzini | } |
117 | f3fc6e2e | Paolo Bonzini | } |
118 | f3fc6e2e | Paolo Bonzini | |
119 | f3fc6e2e | Paolo Bonzini | return delta;
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120 | f3fc6e2e | Paolo Bonzini | } |
121 | f3fc6e2e | Paolo Bonzini | |
122 | db1a4972 | Paolo Bonzini | static void qemu_rearm_alarm_timer(struct qemu_alarm_timer *t) |
123 | db1a4972 | Paolo Bonzini | { |
124 | f3fc6e2e | Paolo Bonzini | int64_t nearest_delta_ns; |
125 | f3fc6e2e | Paolo Bonzini | assert(alarm_has_dynticks(t)); |
126 | f3fc6e2e | Paolo Bonzini | if (!rt_clock->active_timers &&
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127 | f3fc6e2e | Paolo Bonzini | !vm_clock->active_timers && |
128 | f3fc6e2e | Paolo Bonzini | !host_clock->active_timers) { |
129 | db1a4972 | Paolo Bonzini | return;
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130 | f3fc6e2e | Paolo Bonzini | } |
131 | f3fc6e2e | Paolo Bonzini | nearest_delta_ns = qemu_next_alarm_deadline(); |
132 | f3fc6e2e | Paolo Bonzini | t->rearm(t, nearest_delta_ns); |
133 | db1a4972 | Paolo Bonzini | } |
134 | db1a4972 | Paolo Bonzini | |
135 | 9c13246a | Paolo Bonzini | /* TODO: MIN_TIMER_REARM_NS should be optimized */
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136 | 9c13246a | Paolo Bonzini | #define MIN_TIMER_REARM_NS 250000 |
137 | db1a4972 | Paolo Bonzini | |
138 | db1a4972 | Paolo Bonzini | #ifdef _WIN32
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139 | db1a4972 | Paolo Bonzini | |
140 | 2f9cba0c | Stefan Weil | static int mm_start_timer(struct qemu_alarm_timer *t); |
141 | 2f9cba0c | Stefan Weil | static void mm_stop_timer(struct qemu_alarm_timer *t); |
142 | f3fc6e2e | Paolo Bonzini | static void mm_rearm_timer(struct qemu_alarm_timer *t, int64_t delta); |
143 | 2f9cba0c | Stefan Weil | |
144 | db1a4972 | Paolo Bonzini | static int win32_start_timer(struct qemu_alarm_timer *t); |
145 | db1a4972 | Paolo Bonzini | static void win32_stop_timer(struct qemu_alarm_timer *t); |
146 | f3fc6e2e | Paolo Bonzini | static void win32_rearm_timer(struct qemu_alarm_timer *t, int64_t delta); |
147 | db1a4972 | Paolo Bonzini | |
148 | db1a4972 | Paolo Bonzini | #else
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149 | db1a4972 | Paolo Bonzini | |
150 | db1a4972 | Paolo Bonzini | static int unix_start_timer(struct qemu_alarm_timer *t); |
151 | db1a4972 | Paolo Bonzini | static void unix_stop_timer(struct qemu_alarm_timer *t); |
152 | f3fc6e2e | Paolo Bonzini | static void unix_rearm_timer(struct qemu_alarm_timer *t, int64_t delta); |
153 | db1a4972 | Paolo Bonzini | |
154 | db1a4972 | Paolo Bonzini | #ifdef __linux__
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155 | db1a4972 | Paolo Bonzini | |
156 | db1a4972 | Paolo Bonzini | static int dynticks_start_timer(struct qemu_alarm_timer *t); |
157 | db1a4972 | Paolo Bonzini | static void dynticks_stop_timer(struct qemu_alarm_timer *t); |
158 | f3fc6e2e | Paolo Bonzini | static void dynticks_rearm_timer(struct qemu_alarm_timer *t, int64_t delta); |
159 | db1a4972 | Paolo Bonzini | |
160 | db1a4972 | Paolo Bonzini | #endif /* __linux__ */ |
161 | db1a4972 | Paolo Bonzini | |
162 | db1a4972 | Paolo Bonzini | #endif /* _WIN32 */ |
163 | db1a4972 | Paolo Bonzini | |
164 | db1a4972 | Paolo Bonzini | static struct qemu_alarm_timer alarm_timers[] = { |
165 | db1a4972 | Paolo Bonzini | #ifndef _WIN32
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166 | db1a4972 | Paolo Bonzini | #ifdef __linux__
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167 | db1a4972 | Paolo Bonzini | {"dynticks", dynticks_start_timer,
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168 | cd0544ee | Stefan Weil | dynticks_stop_timer, dynticks_rearm_timer}, |
169 | db1a4972 | Paolo Bonzini | #endif
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170 | 84682834 | Paolo Bonzini | {"unix", unix_start_timer, unix_stop_timer, unix_rearm_timer},
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171 | db1a4972 | Paolo Bonzini | #else
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172 | cca5de73 | Paolo Bonzini | {"mmtimer", mm_start_timer, mm_stop_timer, mm_rearm_timer},
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173 | cd0544ee | Stefan Weil | {"dynticks", win32_start_timer, win32_stop_timer, win32_rearm_timer},
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174 | db1a4972 | Paolo Bonzini | #endif
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175 | db1a4972 | Paolo Bonzini | {NULL, }
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176 | db1a4972 | Paolo Bonzini | }; |
177 | db1a4972 | Paolo Bonzini | |
178 | db1a4972 | Paolo Bonzini | static void show_available_alarms(void) |
179 | db1a4972 | Paolo Bonzini | { |
180 | db1a4972 | Paolo Bonzini | int i;
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181 | db1a4972 | Paolo Bonzini | |
182 | db1a4972 | Paolo Bonzini | printf("Available alarm timers, in order of precedence:\n");
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183 | db1a4972 | Paolo Bonzini | for (i = 0; alarm_timers[i].name; i++) |
184 | db1a4972 | Paolo Bonzini | printf("%s\n", alarm_timers[i].name);
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185 | db1a4972 | Paolo Bonzini | } |
186 | db1a4972 | Paolo Bonzini | |
187 | db1a4972 | Paolo Bonzini | void configure_alarms(char const *opt) |
188 | db1a4972 | Paolo Bonzini | { |
189 | db1a4972 | Paolo Bonzini | int i;
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190 | db1a4972 | Paolo Bonzini | int cur = 0; |
191 | db1a4972 | Paolo Bonzini | int count = ARRAY_SIZE(alarm_timers) - 1; |
192 | db1a4972 | Paolo Bonzini | char *arg;
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193 | db1a4972 | Paolo Bonzini | char *name;
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194 | db1a4972 | Paolo Bonzini | struct qemu_alarm_timer tmp;
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195 | db1a4972 | Paolo Bonzini | |
196 | db1a4972 | Paolo Bonzini | if (!strcmp(opt, "?")) { |
197 | db1a4972 | Paolo Bonzini | show_available_alarms(); |
198 | db1a4972 | Paolo Bonzini | exit(0);
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199 | db1a4972 | Paolo Bonzini | } |
200 | db1a4972 | Paolo Bonzini | |
201 | 7267c094 | Anthony Liguori | arg = g_strdup(opt); |
202 | db1a4972 | Paolo Bonzini | |
203 | db1a4972 | Paolo Bonzini | /* Reorder the array */
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204 | db1a4972 | Paolo Bonzini | name = strtok(arg, ",");
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205 | db1a4972 | Paolo Bonzini | while (name) {
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206 | db1a4972 | Paolo Bonzini | for (i = 0; i < count && alarm_timers[i].name; i++) { |
207 | db1a4972 | Paolo Bonzini | if (!strcmp(alarm_timers[i].name, name))
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208 | db1a4972 | Paolo Bonzini | break;
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209 | db1a4972 | Paolo Bonzini | } |
210 | db1a4972 | Paolo Bonzini | |
211 | db1a4972 | Paolo Bonzini | if (i == count) {
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212 | db1a4972 | Paolo Bonzini | fprintf(stderr, "Unknown clock %s\n", name);
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213 | db1a4972 | Paolo Bonzini | goto next;
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214 | db1a4972 | Paolo Bonzini | } |
215 | db1a4972 | Paolo Bonzini | |
216 | db1a4972 | Paolo Bonzini | if (i < cur)
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217 | db1a4972 | Paolo Bonzini | /* Ignore */
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218 | db1a4972 | Paolo Bonzini | goto next;
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219 | db1a4972 | Paolo Bonzini | |
220 | db1a4972 | Paolo Bonzini | /* Swap */
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221 | db1a4972 | Paolo Bonzini | tmp = alarm_timers[i]; |
222 | db1a4972 | Paolo Bonzini | alarm_timers[i] = alarm_timers[cur]; |
223 | db1a4972 | Paolo Bonzini | alarm_timers[cur] = tmp; |
224 | db1a4972 | Paolo Bonzini | |
225 | db1a4972 | Paolo Bonzini | cur++; |
226 | db1a4972 | Paolo Bonzini | next:
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227 | db1a4972 | Paolo Bonzini | name = strtok(NULL, ","); |
228 | db1a4972 | Paolo Bonzini | } |
229 | db1a4972 | Paolo Bonzini | |
230 | 7267c094 | Anthony Liguori | g_free(arg); |
231 | db1a4972 | Paolo Bonzini | |
232 | db1a4972 | Paolo Bonzini | if (cur) {
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233 | db1a4972 | Paolo Bonzini | /* Disable remaining timers */
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234 | db1a4972 | Paolo Bonzini | for (i = cur; i < count; i++)
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235 | db1a4972 | Paolo Bonzini | alarm_timers[i].name = NULL;
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236 | db1a4972 | Paolo Bonzini | } else {
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237 | db1a4972 | Paolo Bonzini | show_available_alarms(); |
238 | db1a4972 | Paolo Bonzini | exit(1);
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239 | db1a4972 | Paolo Bonzini | } |
240 | db1a4972 | Paolo Bonzini | } |
241 | db1a4972 | Paolo Bonzini | |
242 | db1a4972 | Paolo Bonzini | QEMUClock *rt_clock; |
243 | db1a4972 | Paolo Bonzini | QEMUClock *vm_clock; |
244 | db1a4972 | Paolo Bonzini | QEMUClock *host_clock; |
245 | db1a4972 | Paolo Bonzini | |
246 | db1a4972 | Paolo Bonzini | static QEMUClock *qemu_new_clock(int type) |
247 | db1a4972 | Paolo Bonzini | { |
248 | db1a4972 | Paolo Bonzini | QEMUClock *clock; |
249 | 691a0c9c | Jan Kiszka | |
250 | 7267c094 | Anthony Liguori | clock = g_malloc0(sizeof(QEMUClock));
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251 | db1a4972 | Paolo Bonzini | clock->type = type; |
252 | db1a4972 | Paolo Bonzini | clock->enabled = 1;
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253 | 2ff68d07 | Paolo Bonzini | clock->last = INT64_MIN; |
254 | 691a0c9c | Jan Kiszka | notifier_list_init(&clock->reset_notifiers); |
255 | db1a4972 | Paolo Bonzini | return clock;
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256 | db1a4972 | Paolo Bonzini | } |
257 | db1a4972 | Paolo Bonzini | |
258 | db1a4972 | Paolo Bonzini | void qemu_clock_enable(QEMUClock *clock, int enabled) |
259 | db1a4972 | Paolo Bonzini | { |
260 | fbdc14eb | Paolo Bonzini | bool old = clock->enabled;
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261 | db1a4972 | Paolo Bonzini | clock->enabled = enabled; |
262 | fbdc14eb | Paolo Bonzini | if (enabled && !old) {
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263 | fbdc14eb | Paolo Bonzini | qemu_rearm_alarm_timer(alarm_timer); |
264 | fbdc14eb | Paolo Bonzini | } |
265 | db1a4972 | Paolo Bonzini | } |
266 | db1a4972 | Paolo Bonzini | |
267 | dc2dfcf0 | Paolo Bonzini | int64_t qemu_clock_has_timers(QEMUClock *clock) |
268 | dc2dfcf0 | Paolo Bonzini | { |
269 | dc2dfcf0 | Paolo Bonzini | return !!clock->active_timers;
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270 | dc2dfcf0 | Paolo Bonzini | } |
271 | dc2dfcf0 | Paolo Bonzini | |
272 | dc2dfcf0 | Paolo Bonzini | int64_t qemu_clock_expired(QEMUClock *clock) |
273 | dc2dfcf0 | Paolo Bonzini | { |
274 | dc2dfcf0 | Paolo Bonzini | return (clock->active_timers &&
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275 | dc2dfcf0 | Paolo Bonzini | clock->active_timers->expire_time < qemu_get_clock_ns(clock)); |
276 | dc2dfcf0 | Paolo Bonzini | } |
277 | dc2dfcf0 | Paolo Bonzini | |
278 | dc2dfcf0 | Paolo Bonzini | int64_t qemu_clock_deadline(QEMUClock *clock) |
279 | dc2dfcf0 | Paolo Bonzini | { |
280 | dc2dfcf0 | Paolo Bonzini | /* To avoid problems with overflow limit this to 2^32. */
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281 | dc2dfcf0 | Paolo Bonzini | int64_t delta = INT32_MAX; |
282 | dc2dfcf0 | Paolo Bonzini | |
283 | dc2dfcf0 | Paolo Bonzini | if (clock->active_timers) {
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284 | dc2dfcf0 | Paolo Bonzini | delta = clock->active_timers->expire_time - qemu_get_clock_ns(clock); |
285 | dc2dfcf0 | Paolo Bonzini | } |
286 | dc2dfcf0 | Paolo Bonzini | if (delta < 0) { |
287 | dc2dfcf0 | Paolo Bonzini | delta = 0;
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288 | dc2dfcf0 | Paolo Bonzini | } |
289 | dc2dfcf0 | Paolo Bonzini | return delta;
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290 | dc2dfcf0 | Paolo Bonzini | } |
291 | dc2dfcf0 | Paolo Bonzini | |
292 | 4a998740 | Paolo Bonzini | QEMUTimer *qemu_new_timer(QEMUClock *clock, int scale,
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293 | 4a998740 | Paolo Bonzini | QEMUTimerCB *cb, void *opaque)
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294 | db1a4972 | Paolo Bonzini | { |
295 | db1a4972 | Paolo Bonzini | QEMUTimer *ts; |
296 | db1a4972 | Paolo Bonzini | |
297 | 7267c094 | Anthony Liguori | ts = g_malloc0(sizeof(QEMUTimer));
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298 | db1a4972 | Paolo Bonzini | ts->clock = clock; |
299 | db1a4972 | Paolo Bonzini | ts->cb = cb; |
300 | db1a4972 | Paolo Bonzini | ts->opaque = opaque; |
301 | 4a998740 | Paolo Bonzini | ts->scale = scale; |
302 | db1a4972 | Paolo Bonzini | return ts;
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303 | db1a4972 | Paolo Bonzini | } |
304 | db1a4972 | Paolo Bonzini | |
305 | db1a4972 | Paolo Bonzini | void qemu_free_timer(QEMUTimer *ts)
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306 | db1a4972 | Paolo Bonzini | { |
307 | 7267c094 | Anthony Liguori | g_free(ts); |
308 | db1a4972 | Paolo Bonzini | } |
309 | db1a4972 | Paolo Bonzini | |
310 | db1a4972 | Paolo Bonzini | /* stop a timer, but do not dealloc it */
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311 | db1a4972 | Paolo Bonzini | void qemu_del_timer(QEMUTimer *ts)
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312 | db1a4972 | Paolo Bonzini | { |
313 | db1a4972 | Paolo Bonzini | QEMUTimer **pt, *t; |
314 | db1a4972 | Paolo Bonzini | |
315 | db1a4972 | Paolo Bonzini | /* NOTE: this code must be signal safe because
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316 | db1a4972 | Paolo Bonzini | qemu_timer_expired() can be called from a signal. */
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317 | 688eb389 | Paolo Bonzini | pt = &ts->clock->active_timers; |
318 | db1a4972 | Paolo Bonzini | for(;;) {
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319 | db1a4972 | Paolo Bonzini | t = *pt; |
320 | db1a4972 | Paolo Bonzini | if (!t)
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321 | db1a4972 | Paolo Bonzini | break;
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322 | db1a4972 | Paolo Bonzini | if (t == ts) {
|
323 | db1a4972 | Paolo Bonzini | *pt = t->next; |
324 | db1a4972 | Paolo Bonzini | break;
|
325 | db1a4972 | Paolo Bonzini | } |
326 | db1a4972 | Paolo Bonzini | pt = &t->next; |
327 | db1a4972 | Paolo Bonzini | } |
328 | db1a4972 | Paolo Bonzini | } |
329 | db1a4972 | Paolo Bonzini | |
330 | db1a4972 | Paolo Bonzini | /* modify the current timer so that it will be fired when current_time
|
331 | db1a4972 | Paolo Bonzini | >= expire_time. The corresponding callback will be called. */
|
332 | 2ff68d07 | Paolo Bonzini | void qemu_mod_timer_ns(QEMUTimer *ts, int64_t expire_time)
|
333 | db1a4972 | Paolo Bonzini | { |
334 | db1a4972 | Paolo Bonzini | QEMUTimer **pt, *t; |
335 | db1a4972 | Paolo Bonzini | |
336 | db1a4972 | Paolo Bonzini | qemu_del_timer(ts); |
337 | db1a4972 | Paolo Bonzini | |
338 | db1a4972 | Paolo Bonzini | /* add the timer in the sorted list */
|
339 | db1a4972 | Paolo Bonzini | /* NOTE: this code must be signal safe because
|
340 | db1a4972 | Paolo Bonzini | qemu_timer_expired() can be called from a signal. */
|
341 | 688eb389 | Paolo Bonzini | pt = &ts->clock->active_timers; |
342 | db1a4972 | Paolo Bonzini | for(;;) {
|
343 | db1a4972 | Paolo Bonzini | t = *pt; |
344 | 45c7b37f | Stefan Weil | if (!qemu_timer_expired_ns(t, expire_time)) {
|
345 | db1a4972 | Paolo Bonzini | break;
|
346 | 45c7b37f | Stefan Weil | } |
347 | db1a4972 | Paolo Bonzini | pt = &t->next; |
348 | db1a4972 | Paolo Bonzini | } |
349 | db1a4972 | Paolo Bonzini | ts->expire_time = expire_time; |
350 | db1a4972 | Paolo Bonzini | ts->next = *pt; |
351 | db1a4972 | Paolo Bonzini | *pt = ts; |
352 | db1a4972 | Paolo Bonzini | |
353 | db1a4972 | Paolo Bonzini | /* Rearm if necessary */
|
354 | 688eb389 | Paolo Bonzini | if (pt == &ts->clock->active_timers) {
|
355 | db1a4972 | Paolo Bonzini | if (!alarm_timer->pending) {
|
356 | db1a4972 | Paolo Bonzini | qemu_rearm_alarm_timer(alarm_timer); |
357 | db1a4972 | Paolo Bonzini | } |
358 | db1a4972 | Paolo Bonzini | /* Interrupt execution to force deadline recalculation. */
|
359 | ab33fcda | Paolo Bonzini | qemu_clock_warp(ts->clock); |
360 | ab33fcda | Paolo Bonzini | if (use_icount) {
|
361 | db1a4972 | Paolo Bonzini | qemu_notify_event(); |
362 | ab33fcda | Paolo Bonzini | } |
363 | db1a4972 | Paolo Bonzini | } |
364 | db1a4972 | Paolo Bonzini | } |
365 | db1a4972 | Paolo Bonzini | |
366 | 4a998740 | Paolo Bonzini | void qemu_mod_timer(QEMUTimer *ts, int64_t expire_time)
|
367 | 4a998740 | Paolo Bonzini | { |
368 | 4a998740 | Paolo Bonzini | qemu_mod_timer_ns(ts, expire_time * ts->scale); |
369 | 4a998740 | Paolo Bonzini | } |
370 | 4a998740 | Paolo Bonzini | |
371 | db1a4972 | Paolo Bonzini | int qemu_timer_pending(QEMUTimer *ts)
|
372 | db1a4972 | Paolo Bonzini | { |
373 | db1a4972 | Paolo Bonzini | QEMUTimer *t; |
374 | 688eb389 | Paolo Bonzini | for (t = ts->clock->active_timers; t != NULL; t = t->next) { |
375 | db1a4972 | Paolo Bonzini | if (t == ts)
|
376 | db1a4972 | Paolo Bonzini | return 1; |
377 | db1a4972 | Paolo Bonzini | } |
378 | db1a4972 | Paolo Bonzini | return 0; |
379 | db1a4972 | Paolo Bonzini | } |
380 | db1a4972 | Paolo Bonzini | |
381 | db1a4972 | Paolo Bonzini | int qemu_timer_expired(QEMUTimer *timer_head, int64_t current_time)
|
382 | db1a4972 | Paolo Bonzini | { |
383 | 45c7b37f | Stefan Weil | return qemu_timer_expired_ns(timer_head, current_time * timer_head->scale);
|
384 | db1a4972 | Paolo Bonzini | } |
385 | db1a4972 | Paolo Bonzini | |
386 | 8156be56 | Paolo Bonzini | void qemu_run_timers(QEMUClock *clock)
|
387 | db1a4972 | Paolo Bonzini | { |
388 | db1a4972 | Paolo Bonzini | QEMUTimer **ptimer_head, *ts; |
389 | db1a4972 | Paolo Bonzini | int64_t current_time; |
390 | db1a4972 | Paolo Bonzini | |
391 | db1a4972 | Paolo Bonzini | if (!clock->enabled)
|
392 | db1a4972 | Paolo Bonzini | return;
|
393 | db1a4972 | Paolo Bonzini | |
394 | 4a998740 | Paolo Bonzini | current_time = qemu_get_clock_ns(clock); |
395 | 688eb389 | Paolo Bonzini | ptimer_head = &clock->active_timers; |
396 | db1a4972 | Paolo Bonzini | for(;;) {
|
397 | db1a4972 | Paolo Bonzini | ts = *ptimer_head; |
398 | 45c7b37f | Stefan Weil | if (!qemu_timer_expired_ns(ts, current_time)) {
|
399 | db1a4972 | Paolo Bonzini | break;
|
400 | 45c7b37f | Stefan Weil | } |
401 | db1a4972 | Paolo Bonzini | /* remove timer from the list before calling the callback */
|
402 | db1a4972 | Paolo Bonzini | *ptimer_head = ts->next; |
403 | db1a4972 | Paolo Bonzini | ts->next = NULL;
|
404 | db1a4972 | Paolo Bonzini | |
405 | db1a4972 | Paolo Bonzini | /* run the callback (the timer list can be modified) */
|
406 | db1a4972 | Paolo Bonzini | ts->cb(ts->opaque); |
407 | db1a4972 | Paolo Bonzini | } |
408 | db1a4972 | Paolo Bonzini | } |
409 | db1a4972 | Paolo Bonzini | |
410 | db1a4972 | Paolo Bonzini | int64_t qemu_get_clock_ns(QEMUClock *clock) |
411 | db1a4972 | Paolo Bonzini | { |
412 | 691a0c9c | Jan Kiszka | int64_t now, last; |
413 | 691a0c9c | Jan Kiszka | |
414 | db1a4972 | Paolo Bonzini | switch(clock->type) {
|
415 | db1a4972 | Paolo Bonzini | case QEMU_CLOCK_REALTIME:
|
416 | db1a4972 | Paolo Bonzini | return get_clock();
|
417 | db1a4972 | Paolo Bonzini | default:
|
418 | db1a4972 | Paolo Bonzini | case QEMU_CLOCK_VIRTUAL:
|
419 | db1a4972 | Paolo Bonzini | if (use_icount) {
|
420 | db1a4972 | Paolo Bonzini | return cpu_get_icount();
|
421 | db1a4972 | Paolo Bonzini | } else {
|
422 | db1a4972 | Paolo Bonzini | return cpu_get_clock();
|
423 | db1a4972 | Paolo Bonzini | } |
424 | db1a4972 | Paolo Bonzini | case QEMU_CLOCK_HOST:
|
425 | 691a0c9c | Jan Kiszka | now = get_clock_realtime(); |
426 | 691a0c9c | Jan Kiszka | last = clock->last; |
427 | 691a0c9c | Jan Kiszka | clock->last = now; |
428 | 691a0c9c | Jan Kiszka | if (now < last) {
|
429 | 691a0c9c | Jan Kiszka | notifier_list_notify(&clock->reset_notifiers, &now); |
430 | 691a0c9c | Jan Kiszka | } |
431 | 691a0c9c | Jan Kiszka | return now;
|
432 | db1a4972 | Paolo Bonzini | } |
433 | db1a4972 | Paolo Bonzini | } |
434 | db1a4972 | Paolo Bonzini | |
435 | 691a0c9c | Jan Kiszka | void qemu_register_clock_reset_notifier(QEMUClock *clock, Notifier *notifier)
|
436 | 691a0c9c | Jan Kiszka | { |
437 | 691a0c9c | Jan Kiszka | notifier_list_add(&clock->reset_notifiers, notifier); |
438 | 691a0c9c | Jan Kiszka | } |
439 | 691a0c9c | Jan Kiszka | |
440 | 691a0c9c | Jan Kiszka | void qemu_unregister_clock_reset_notifier(QEMUClock *clock, Notifier *notifier)
|
441 | 691a0c9c | Jan Kiszka | { |
442 | 31552529 | Paolo Bonzini | notifier_remove(notifier); |
443 | 691a0c9c | Jan Kiszka | } |
444 | 691a0c9c | Jan Kiszka | |
445 | db1a4972 | Paolo Bonzini | void init_clocks(void) |
446 | db1a4972 | Paolo Bonzini | { |
447 | db1a4972 | Paolo Bonzini | rt_clock = qemu_new_clock(QEMU_CLOCK_REALTIME); |
448 | db1a4972 | Paolo Bonzini | vm_clock = qemu_new_clock(QEMU_CLOCK_VIRTUAL); |
449 | db1a4972 | Paolo Bonzini | host_clock = qemu_new_clock(QEMU_CLOCK_HOST); |
450 | db1a4972 | Paolo Bonzini | } |
451 | db1a4972 | Paolo Bonzini | |
452 | 2ff68d07 | Paolo Bonzini | uint64_t qemu_timer_expire_time_ns(QEMUTimer *ts) |
453 | db1a4972 | Paolo Bonzini | { |
454 | 2ff68d07 | Paolo Bonzini | return qemu_timer_pending(ts) ? ts->expire_time : -1; |
455 | db1a4972 | Paolo Bonzini | } |
456 | db1a4972 | Paolo Bonzini | |
457 | db1a4972 | Paolo Bonzini | void qemu_run_all_timers(void) |
458 | db1a4972 | Paolo Bonzini | { |
459 | ca5a2a4b | Paolo Bonzini | alarm_timer->pending = 0;
|
460 | ca5a2a4b | Paolo Bonzini | |
461 | 158fd3ce | Peter Portante | /* vm time timers */
|
462 | 158fd3ce | Peter Portante | qemu_run_timers(vm_clock); |
463 | 158fd3ce | Peter Portante | qemu_run_timers(rt_clock); |
464 | 158fd3ce | Peter Portante | qemu_run_timers(host_clock); |
465 | 158fd3ce | Peter Portante | |
466 | db1a4972 | Paolo Bonzini | /* rearm timer, if not periodic */
|
467 | db1a4972 | Paolo Bonzini | if (alarm_timer->expired) {
|
468 | db1a4972 | Paolo Bonzini | alarm_timer->expired = 0;
|
469 | db1a4972 | Paolo Bonzini | qemu_rearm_alarm_timer(alarm_timer); |
470 | db1a4972 | Paolo Bonzini | } |
471 | db1a4972 | Paolo Bonzini | } |
472 | db1a4972 | Paolo Bonzini | |
473 | db1a4972 | Paolo Bonzini | #ifdef _WIN32
|
474 | 68c23e55 | Paolo Bonzini | static void CALLBACK host_alarm_handler(PVOID lpParam, BOOLEAN unused) |
475 | db1a4972 | Paolo Bonzini | #else
|
476 | db1a4972 | Paolo Bonzini | static void host_alarm_handler(int host_signum) |
477 | db1a4972 | Paolo Bonzini | #endif
|
478 | db1a4972 | Paolo Bonzini | { |
479 | db1a4972 | Paolo Bonzini | struct qemu_alarm_timer *t = alarm_timer;
|
480 | db1a4972 | Paolo Bonzini | if (!t)
|
481 | db1a4972 | Paolo Bonzini | return;
|
482 | db1a4972 | Paolo Bonzini | |
483 | db1a4972 | Paolo Bonzini | if (alarm_has_dynticks(t) ||
|
484 | 4c3d45eb | Paolo Bonzini | qemu_next_alarm_deadline () <= 0) {
|
485 | db1a4972 | Paolo Bonzini | t->expired = alarm_has_dynticks(t); |
486 | db1a4972 | Paolo Bonzini | t->pending = 1;
|
487 | db1a4972 | Paolo Bonzini | qemu_notify_event(); |
488 | db1a4972 | Paolo Bonzini | } |
489 | db1a4972 | Paolo Bonzini | } |
490 | db1a4972 | Paolo Bonzini | |
491 | 4c3d45eb | Paolo Bonzini | #if defined(__linux__)
|
492 | 4c3d45eb | Paolo Bonzini | |
493 | d25f89c9 | Jan Kiszka | #include "compatfd.h" |
494 | d25f89c9 | Jan Kiszka | |
495 | db1a4972 | Paolo Bonzini | static int dynticks_start_timer(struct qemu_alarm_timer *t) |
496 | db1a4972 | Paolo Bonzini | { |
497 | db1a4972 | Paolo Bonzini | struct sigevent ev;
|
498 | db1a4972 | Paolo Bonzini | timer_t host_timer; |
499 | db1a4972 | Paolo Bonzini | struct sigaction act;
|
500 | db1a4972 | Paolo Bonzini | |
501 | db1a4972 | Paolo Bonzini | sigfillset(&act.sa_mask); |
502 | db1a4972 | Paolo Bonzini | act.sa_flags = 0;
|
503 | db1a4972 | Paolo Bonzini | act.sa_handler = host_alarm_handler; |
504 | db1a4972 | Paolo Bonzini | |
505 | db1a4972 | Paolo Bonzini | sigaction(SIGALRM, &act, NULL);
|
506 | db1a4972 | Paolo Bonzini | |
507 | db1a4972 | Paolo Bonzini | /*
|
508 | db1a4972 | Paolo Bonzini | * Initialize ev struct to 0 to avoid valgrind complaining
|
509 | db1a4972 | Paolo Bonzini | * about uninitialized data in timer_create call
|
510 | db1a4972 | Paolo Bonzini | */
|
511 | db1a4972 | Paolo Bonzini | memset(&ev, 0, sizeof(ev)); |
512 | db1a4972 | Paolo Bonzini | ev.sigev_value.sival_int = 0;
|
513 | db1a4972 | Paolo Bonzini | ev.sigev_notify = SIGEV_SIGNAL; |
514 | d25f89c9 | Jan Kiszka | #ifdef SIGEV_THREAD_ID
|
515 | d25f89c9 | Jan Kiszka | if (qemu_signalfd_available()) {
|
516 | d25f89c9 | Jan Kiszka | ev.sigev_notify = SIGEV_THREAD_ID; |
517 | d25f89c9 | Jan Kiszka | ev._sigev_un._tid = qemu_get_thread_id(); |
518 | d25f89c9 | Jan Kiszka | } |
519 | d25f89c9 | Jan Kiszka | #endif /* SIGEV_THREAD_ID */ |
520 | db1a4972 | Paolo Bonzini | ev.sigev_signo = SIGALRM; |
521 | db1a4972 | Paolo Bonzini | |
522 | db1a4972 | Paolo Bonzini | if (timer_create(CLOCK_REALTIME, &ev, &host_timer)) {
|
523 | db1a4972 | Paolo Bonzini | perror("timer_create");
|
524 | db1a4972 | Paolo Bonzini | |
525 | db1a4972 | Paolo Bonzini | /* disable dynticks */
|
526 | db1a4972 | Paolo Bonzini | fprintf(stderr, "Dynamic Ticks disabled\n");
|
527 | db1a4972 | Paolo Bonzini | |
528 | db1a4972 | Paolo Bonzini | return -1; |
529 | db1a4972 | Paolo Bonzini | } |
530 | db1a4972 | Paolo Bonzini | |
531 | cd0544ee | Stefan Weil | t->timer = host_timer; |
532 | db1a4972 | Paolo Bonzini | |
533 | db1a4972 | Paolo Bonzini | return 0; |
534 | db1a4972 | Paolo Bonzini | } |
535 | db1a4972 | Paolo Bonzini | |
536 | db1a4972 | Paolo Bonzini | static void dynticks_stop_timer(struct qemu_alarm_timer *t) |
537 | db1a4972 | Paolo Bonzini | { |
538 | cd0544ee | Stefan Weil | timer_t host_timer = t->timer; |
539 | db1a4972 | Paolo Bonzini | |
540 | db1a4972 | Paolo Bonzini | timer_delete(host_timer); |
541 | db1a4972 | Paolo Bonzini | } |
542 | db1a4972 | Paolo Bonzini | |
543 | f3fc6e2e | Paolo Bonzini | static void dynticks_rearm_timer(struct qemu_alarm_timer *t, |
544 | f3fc6e2e | Paolo Bonzini | int64_t nearest_delta_ns) |
545 | db1a4972 | Paolo Bonzini | { |
546 | cd0544ee | Stefan Weil | timer_t host_timer = t->timer; |
547 | db1a4972 | Paolo Bonzini | struct itimerspec timeout;
|
548 | 9c13246a | Paolo Bonzini | int64_t current_ns; |
549 | db1a4972 | Paolo Bonzini | |
550 | 4c3d45eb | Paolo Bonzini | if (nearest_delta_ns < MIN_TIMER_REARM_NS)
|
551 | 4c3d45eb | Paolo Bonzini | nearest_delta_ns = MIN_TIMER_REARM_NS; |
552 | db1a4972 | Paolo Bonzini | |
553 | db1a4972 | Paolo Bonzini | /* check whether a timer is already running */
|
554 | db1a4972 | Paolo Bonzini | if (timer_gettime(host_timer, &timeout)) {
|
555 | db1a4972 | Paolo Bonzini | perror("gettime");
|
556 | db1a4972 | Paolo Bonzini | fprintf(stderr, "Internal timer error: aborting\n");
|
557 | db1a4972 | Paolo Bonzini | exit(1);
|
558 | db1a4972 | Paolo Bonzini | } |
559 | 9c13246a | Paolo Bonzini | current_ns = timeout.it_value.tv_sec * 1000000000LL + timeout.it_value.tv_nsec;
|
560 | 9c13246a | Paolo Bonzini | if (current_ns && current_ns <= nearest_delta_ns)
|
561 | db1a4972 | Paolo Bonzini | return;
|
562 | db1a4972 | Paolo Bonzini | |
563 | db1a4972 | Paolo Bonzini | timeout.it_interval.tv_sec = 0;
|
564 | db1a4972 | Paolo Bonzini | timeout.it_interval.tv_nsec = 0; /* 0 for one-shot timer */ |
565 | 9c13246a | Paolo Bonzini | timeout.it_value.tv_sec = nearest_delta_ns / 1000000000;
|
566 | 9c13246a | Paolo Bonzini | timeout.it_value.tv_nsec = nearest_delta_ns % 1000000000;
|
567 | db1a4972 | Paolo Bonzini | if (timer_settime(host_timer, 0 /* RELATIVE */, &timeout, NULL)) { |
568 | db1a4972 | Paolo Bonzini | perror("settime");
|
569 | db1a4972 | Paolo Bonzini | fprintf(stderr, "Internal timer error: aborting\n");
|
570 | db1a4972 | Paolo Bonzini | exit(1);
|
571 | db1a4972 | Paolo Bonzini | } |
572 | db1a4972 | Paolo Bonzini | } |
573 | db1a4972 | Paolo Bonzini | |
574 | db1a4972 | Paolo Bonzini | #endif /* defined(__linux__) */ |
575 | db1a4972 | Paolo Bonzini | |
576 | f26e5a54 | Stefan Weil | #if !defined(_WIN32)
|
577 | f26e5a54 | Stefan Weil | |
578 | db1a4972 | Paolo Bonzini | static int unix_start_timer(struct qemu_alarm_timer *t) |
579 | db1a4972 | Paolo Bonzini | { |
580 | db1a4972 | Paolo Bonzini | struct sigaction act;
|
581 | db1a4972 | Paolo Bonzini | |
582 | db1a4972 | Paolo Bonzini | /* timer signal */
|
583 | db1a4972 | Paolo Bonzini | sigfillset(&act.sa_mask); |
584 | db1a4972 | Paolo Bonzini | act.sa_flags = 0;
|
585 | db1a4972 | Paolo Bonzini | act.sa_handler = host_alarm_handler; |
586 | db1a4972 | Paolo Bonzini | |
587 | db1a4972 | Paolo Bonzini | sigaction(SIGALRM, &act, NULL);
|
588 | 84682834 | Paolo Bonzini | return 0; |
589 | 84682834 | Paolo Bonzini | } |
590 | db1a4972 | Paolo Bonzini | |
591 | f3fc6e2e | Paolo Bonzini | static void unix_rearm_timer(struct qemu_alarm_timer *t, |
592 | f3fc6e2e | Paolo Bonzini | int64_t nearest_delta_ns) |
593 | 84682834 | Paolo Bonzini | { |
594 | 84682834 | Paolo Bonzini | struct itimerval itv;
|
595 | 84682834 | Paolo Bonzini | int err;
|
596 | db1a4972 | Paolo Bonzini | |
597 | 84682834 | Paolo Bonzini | if (nearest_delta_ns < MIN_TIMER_REARM_NS)
|
598 | 84682834 | Paolo Bonzini | nearest_delta_ns = MIN_TIMER_REARM_NS; |
599 | 84682834 | Paolo Bonzini | |
600 | 84682834 | Paolo Bonzini | itv.it_interval.tv_sec = 0;
|
601 | 84682834 | Paolo Bonzini | itv.it_interval.tv_usec = 0; /* 0 for one-shot timer */ |
602 | 84682834 | Paolo Bonzini | itv.it_value.tv_sec = nearest_delta_ns / 1000000000;
|
603 | 84682834 | Paolo Bonzini | itv.it_value.tv_usec = (nearest_delta_ns % 1000000000) / 1000; |
604 | 84682834 | Paolo Bonzini | err = setitimer(ITIMER_REAL, &itv, NULL);
|
605 | 84682834 | Paolo Bonzini | if (err) {
|
606 | 84682834 | Paolo Bonzini | perror("setitimer");
|
607 | 84682834 | Paolo Bonzini | fprintf(stderr, "Internal timer error: aborting\n");
|
608 | 84682834 | Paolo Bonzini | exit(1);
|
609 | 84682834 | Paolo Bonzini | } |
610 | db1a4972 | Paolo Bonzini | } |
611 | db1a4972 | Paolo Bonzini | |
612 | db1a4972 | Paolo Bonzini | static void unix_stop_timer(struct qemu_alarm_timer *t) |
613 | db1a4972 | Paolo Bonzini | { |
614 | db1a4972 | Paolo Bonzini | struct itimerval itv;
|
615 | db1a4972 | Paolo Bonzini | |
616 | db1a4972 | Paolo Bonzini | memset(&itv, 0, sizeof(itv)); |
617 | db1a4972 | Paolo Bonzini | setitimer(ITIMER_REAL, &itv, NULL);
|
618 | db1a4972 | Paolo Bonzini | } |
619 | db1a4972 | Paolo Bonzini | |
620 | db1a4972 | Paolo Bonzini | #endif /* !defined(_WIN32) */ |
621 | db1a4972 | Paolo Bonzini | |
622 | db1a4972 | Paolo Bonzini | |
623 | db1a4972 | Paolo Bonzini | #ifdef _WIN32
|
624 | db1a4972 | Paolo Bonzini | |
625 | 2f9cba0c | Stefan Weil | static MMRESULT mm_timer;
|
626 | 2f9cba0c | Stefan Weil | static unsigned mm_period; |
627 | 2f9cba0c | Stefan Weil | |
628 | 2f9cba0c | Stefan Weil | static void CALLBACK mm_alarm_handler(UINT uTimerID, UINT uMsg, |
629 | 2f9cba0c | Stefan Weil | DWORD_PTR dwUser, DWORD_PTR dw1, |
630 | 2f9cba0c | Stefan Weil | DWORD_PTR dw2) |
631 | 2f9cba0c | Stefan Weil | { |
632 | 2f9cba0c | Stefan Weil | struct qemu_alarm_timer *t = alarm_timer;
|
633 | 2f9cba0c | Stefan Weil | if (!t) {
|
634 | 2f9cba0c | Stefan Weil | return;
|
635 | 2f9cba0c | Stefan Weil | } |
636 | 2f9cba0c | Stefan Weil | if (alarm_has_dynticks(t) || qemu_next_alarm_deadline() <= 0) { |
637 | 2f9cba0c | Stefan Weil | t->expired = alarm_has_dynticks(t); |
638 | 2f9cba0c | Stefan Weil | t->pending = 1;
|
639 | 2f9cba0c | Stefan Weil | qemu_notify_event(); |
640 | 2f9cba0c | Stefan Weil | } |
641 | 2f9cba0c | Stefan Weil | } |
642 | 2f9cba0c | Stefan Weil | |
643 | 2f9cba0c | Stefan Weil | static int mm_start_timer(struct qemu_alarm_timer *t) |
644 | 2f9cba0c | Stefan Weil | { |
645 | 2f9cba0c | Stefan Weil | TIMECAPS tc; |
646 | 2f9cba0c | Stefan Weil | UINT flags; |
647 | 2f9cba0c | Stefan Weil | |
648 | 2f9cba0c | Stefan Weil | memset(&tc, 0, sizeof(tc)); |
649 | 2f9cba0c | Stefan Weil | timeGetDevCaps(&tc, sizeof(tc));
|
650 | 2f9cba0c | Stefan Weil | |
651 | 2f9cba0c | Stefan Weil | mm_period = tc.wPeriodMin; |
652 | 2f9cba0c | Stefan Weil | timeBeginPeriod(mm_period); |
653 | 2f9cba0c | Stefan Weil | |
654 | 2f9cba0c | Stefan Weil | flags = TIME_CALLBACK_FUNCTION; |
655 | 2f9cba0c | Stefan Weil | if (alarm_has_dynticks(t)) {
|
656 | 2f9cba0c | Stefan Weil | flags |= TIME_ONESHOT; |
657 | 2f9cba0c | Stefan Weil | } else {
|
658 | 2f9cba0c | Stefan Weil | flags |= TIME_PERIODIC; |
659 | 2f9cba0c | Stefan Weil | } |
660 | 2f9cba0c | Stefan Weil | |
661 | 2f9cba0c | Stefan Weil | mm_timer = timeSetEvent(1, /* interval (ms) */ |
662 | 2f9cba0c | Stefan Weil | mm_period, /* resolution */
|
663 | 2f9cba0c | Stefan Weil | mm_alarm_handler, /* function */
|
664 | 2f9cba0c | Stefan Weil | (DWORD_PTR)t, /* parameter */
|
665 | 2f9cba0c | Stefan Weil | flags); |
666 | 2f9cba0c | Stefan Weil | |
667 | 2f9cba0c | Stefan Weil | if (!mm_timer) {
|
668 | 2f9cba0c | Stefan Weil | fprintf(stderr, "Failed to initialize win32 alarm timer: %ld\n",
|
669 | 2f9cba0c | Stefan Weil | GetLastError()); |
670 | 2f9cba0c | Stefan Weil | timeEndPeriod(mm_period); |
671 | 2f9cba0c | Stefan Weil | return -1; |
672 | 2f9cba0c | Stefan Weil | } |
673 | 2f9cba0c | Stefan Weil | |
674 | 2f9cba0c | Stefan Weil | return 0; |
675 | 2f9cba0c | Stefan Weil | } |
676 | 2f9cba0c | Stefan Weil | |
677 | 2f9cba0c | Stefan Weil | static void mm_stop_timer(struct qemu_alarm_timer *t) |
678 | 2f9cba0c | Stefan Weil | { |
679 | 2f9cba0c | Stefan Weil | timeKillEvent(mm_timer); |
680 | 2f9cba0c | Stefan Weil | timeEndPeriod(mm_period); |
681 | 2f9cba0c | Stefan Weil | } |
682 | 2f9cba0c | Stefan Weil | |
683 | f3fc6e2e | Paolo Bonzini | static void mm_rearm_timer(struct qemu_alarm_timer *t, int64_t delta) |
684 | 2f9cba0c | Stefan Weil | { |
685 | 5bfb723f | Stefano Stabellini | int64_t nearest_delta_ms = delta / 1000000;
|
686 | 2f9cba0c | Stefan Weil | if (nearest_delta_ms < 1) { |
687 | 2f9cba0c | Stefan Weil | nearest_delta_ms = 1;
|
688 | 2f9cba0c | Stefan Weil | } |
689 | 5bfb723f | Stefano Stabellini | /* UINT_MAX can be 32 bit */
|
690 | 5bfb723f | Stefano Stabellini | if (nearest_delta_ms > UINT_MAX) {
|
691 | 5bfb723f | Stefano Stabellini | nearest_delta_ms = UINT_MAX; |
692 | 5bfb723f | Stefano Stabellini | } |
693 | f3fc6e2e | Paolo Bonzini | |
694 | f3fc6e2e | Paolo Bonzini | timeKillEvent(mm_timer); |
695 | 5bfb723f | Stefano Stabellini | mm_timer = timeSetEvent((unsigned int) nearest_delta_ms, |
696 | 2f9cba0c | Stefan Weil | mm_period, |
697 | 2f9cba0c | Stefan Weil | mm_alarm_handler, |
698 | 2f9cba0c | Stefan Weil | (DWORD_PTR)t, |
699 | 2f9cba0c | Stefan Weil | TIME_ONESHOT | TIME_CALLBACK_FUNCTION); |
700 | 2f9cba0c | Stefan Weil | |
701 | 2f9cba0c | Stefan Weil | if (!mm_timer) {
|
702 | 2f9cba0c | Stefan Weil | fprintf(stderr, "Failed to re-arm win32 alarm timer %ld\n",
|
703 | 2f9cba0c | Stefan Weil | GetLastError()); |
704 | 2f9cba0c | Stefan Weil | |
705 | 2f9cba0c | Stefan Weil | timeEndPeriod(mm_period); |
706 | 2f9cba0c | Stefan Weil | exit(1);
|
707 | 2f9cba0c | Stefan Weil | } |
708 | 2f9cba0c | Stefan Weil | } |
709 | 2f9cba0c | Stefan Weil | |
710 | db1a4972 | Paolo Bonzini | static int win32_start_timer(struct qemu_alarm_timer *t) |
711 | db1a4972 | Paolo Bonzini | { |
712 | 68c23e55 | Paolo Bonzini | HANDLE hTimer; |
713 | 68c23e55 | Paolo Bonzini | BOOLEAN success; |
714 | 68c23e55 | Paolo Bonzini | |
715 | 68c23e55 | Paolo Bonzini | /* If you call ChangeTimerQueueTimer on a one-shot timer (its period
|
716 | 68c23e55 | Paolo Bonzini | is zero) that has already expired, the timer is not updated. Since
|
717 | 68c23e55 | Paolo Bonzini | creating a new timer is relatively expensive, set a bogus one-hour
|
718 | 68c23e55 | Paolo Bonzini | interval in the dynticks case. */
|
719 | 68c23e55 | Paolo Bonzini | success = CreateTimerQueueTimer(&hTimer, |
720 | 68c23e55 | Paolo Bonzini | NULL,
|
721 | 68c23e55 | Paolo Bonzini | host_alarm_handler, |
722 | 68c23e55 | Paolo Bonzini | t, |
723 | 68c23e55 | Paolo Bonzini | 1,
|
724 | 68c23e55 | Paolo Bonzini | alarm_has_dynticks(t) ? 3600000 : 1, |
725 | 68c23e55 | Paolo Bonzini | WT_EXECUTEINTIMERTHREAD); |
726 | 68c23e55 | Paolo Bonzini | |
727 | 68c23e55 | Paolo Bonzini | if (!success) {
|
728 | db1a4972 | Paolo Bonzini | fprintf(stderr, "Failed to initialize win32 alarm timer: %ld\n",
|
729 | db1a4972 | Paolo Bonzini | GetLastError()); |
730 | db1a4972 | Paolo Bonzini | return -1; |
731 | db1a4972 | Paolo Bonzini | } |
732 | db1a4972 | Paolo Bonzini | |
733 | cd0544ee | Stefan Weil | t->timer = hTimer; |
734 | db1a4972 | Paolo Bonzini | return 0; |
735 | db1a4972 | Paolo Bonzini | } |
736 | db1a4972 | Paolo Bonzini | |
737 | db1a4972 | Paolo Bonzini | static void win32_stop_timer(struct qemu_alarm_timer *t) |
738 | db1a4972 | Paolo Bonzini | { |
739 | cd0544ee | Stefan Weil | HANDLE hTimer = t->timer; |
740 | db1a4972 | Paolo Bonzini | |
741 | 68c23e55 | Paolo Bonzini | if (hTimer) {
|
742 | 68c23e55 | Paolo Bonzini | DeleteTimerQueueTimer(NULL, hTimer, NULL); |
743 | 68c23e55 | Paolo Bonzini | } |
744 | db1a4972 | Paolo Bonzini | } |
745 | db1a4972 | Paolo Bonzini | |
746 | f3fc6e2e | Paolo Bonzini | static void win32_rearm_timer(struct qemu_alarm_timer *t, |
747 | f3fc6e2e | Paolo Bonzini | int64_t nearest_delta_ns) |
748 | db1a4972 | Paolo Bonzini | { |
749 | cd0544ee | Stefan Weil | HANDLE hTimer = t->timer; |
750 | 5bfb723f | Stefano Stabellini | int64_t nearest_delta_ms; |
751 | 68c23e55 | Paolo Bonzini | BOOLEAN success; |
752 | db1a4972 | Paolo Bonzini | |
753 | 5bfb723f | Stefano Stabellini | nearest_delta_ms = nearest_delta_ns / 1000000;
|
754 | cfced5b2 | Paolo Bonzini | if (nearest_delta_ms < 1) { |
755 | cfced5b2 | Paolo Bonzini | nearest_delta_ms = 1;
|
756 | cfced5b2 | Paolo Bonzini | } |
757 | 5bfb723f | Stefano Stabellini | /* ULONG_MAX can be 32 bit */
|
758 | 5bfb723f | Stefano Stabellini | if (nearest_delta_ms > ULONG_MAX) {
|
759 | 5bfb723f | Stefano Stabellini | nearest_delta_ms = ULONG_MAX; |
760 | 5bfb723f | Stefano Stabellini | } |
761 | 68c23e55 | Paolo Bonzini | success = ChangeTimerQueueTimer(NULL,
|
762 | 68c23e55 | Paolo Bonzini | hTimer, |
763 | 5bfb723f | Stefano Stabellini | (unsigned long) nearest_delta_ms, |
764 | 68c23e55 | Paolo Bonzini | 3600000);
|
765 | db1a4972 | Paolo Bonzini | |
766 | 68c23e55 | Paolo Bonzini | if (!success) {
|
767 | 68c23e55 | Paolo Bonzini | fprintf(stderr, "Failed to rearm win32 alarm timer: %ld\n",
|
768 | 68c23e55 | Paolo Bonzini | GetLastError()); |
769 | 68c23e55 | Paolo Bonzini | exit(-1);
|
770 | db1a4972 | Paolo Bonzini | } |
771 | 68c23e55 | Paolo Bonzini | |
772 | db1a4972 | Paolo Bonzini | } |
773 | db1a4972 | Paolo Bonzini | |
774 | db1a4972 | Paolo Bonzini | #endif /* _WIN32 */ |
775 | db1a4972 | Paolo Bonzini | |
776 | 4260a739 | Paolo Bonzini | static void quit_timers(void) |
777 | 4260a739 | Paolo Bonzini | { |
778 | 4260a739 | Paolo Bonzini | struct qemu_alarm_timer *t = alarm_timer;
|
779 | 4260a739 | Paolo Bonzini | alarm_timer = NULL;
|
780 | 4260a739 | Paolo Bonzini | t->stop(t); |
781 | 4260a739 | Paolo Bonzini | } |
782 | 4260a739 | Paolo Bonzini | |
783 | db1a4972 | Paolo Bonzini | int init_timer_alarm(void) |
784 | db1a4972 | Paolo Bonzini | { |
785 | db1a4972 | Paolo Bonzini | struct qemu_alarm_timer *t = NULL; |
786 | db1a4972 | Paolo Bonzini | int i, err = -1; |
787 | db1a4972 | Paolo Bonzini | |
788 | db1a4972 | Paolo Bonzini | for (i = 0; alarm_timers[i].name; i++) { |
789 | db1a4972 | Paolo Bonzini | t = &alarm_timers[i]; |
790 | db1a4972 | Paolo Bonzini | |
791 | db1a4972 | Paolo Bonzini | err = t->start(t); |
792 | db1a4972 | Paolo Bonzini | if (!err)
|
793 | db1a4972 | Paolo Bonzini | break;
|
794 | db1a4972 | Paolo Bonzini | } |
795 | db1a4972 | Paolo Bonzini | |
796 | db1a4972 | Paolo Bonzini | if (err) {
|
797 | db1a4972 | Paolo Bonzini | err = -ENOENT; |
798 | db1a4972 | Paolo Bonzini | goto fail;
|
799 | db1a4972 | Paolo Bonzini | } |
800 | db1a4972 | Paolo Bonzini | |
801 | db1a4972 | Paolo Bonzini | /* first event is at time 0 */
|
802 | 4260a739 | Paolo Bonzini | atexit(quit_timers); |
803 | db1a4972 | Paolo Bonzini | t->pending = 1;
|
804 | db1a4972 | Paolo Bonzini | alarm_timer = t; |
805 | db1a4972 | Paolo Bonzini | |
806 | db1a4972 | Paolo Bonzini | return 0; |
807 | db1a4972 | Paolo Bonzini | |
808 | db1a4972 | Paolo Bonzini | fail:
|
809 | db1a4972 | Paolo Bonzini | return err;
|
810 | db1a4972 | Paolo Bonzini | } |