1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <sys/epoll.h>
#include <sys/timerfd.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include "triton_p.h"
extern int max_events;
static int epoll_fd;
static struct epoll_event *epoll_events;
static pthread_t timer_thr;
static void *timer_thread(void *arg);
static mempool_t *timer_pool;
int timer_init(void)
{
epoll_fd = epoll_create(1);
if (epoll_fd < 0) {
perror("timer:epoll_create");
return -1;
}
epoll_events = malloc(max_events * sizeof(struct epoll_event));
if (!epoll_events) {
fprintf(stderr,"timer:cann't allocate memory\n");
return -1;
}
timer_pool = mempool_create(sizeof(struct _triton_timer_t));
return 0;
}
void timer_run(void)
{
if (pthread_create(&timer_thr, NULL, timer_thread, NULL)) {
triton_log_error("timer:pthread_create: %s",strerror(errno));
_exit(-1);
}
}
void timer_terminate(void)
{
pthread_cancel(timer_thr);
pthread_join(timer_thr, NULL);
}
void *timer_thread(void *arg)
{
int i,n,r;
struct _triton_timer_t *t;
while(1) {
n = epoll_wait(epoll_fd, epoll_events, max_events, -1);
if (n < 0) {
if (errno == EINTR)
continue;
triton_log_error("timer:epoll_wait: %s", strerror(errno));
_exit(-1);
}
for(i = 0; i < n; i++) {
t = (struct _triton_timer_t *)epoll_events[i].data.ptr;
spin_lock(&t->ctx->lock);
if (t->ud) {
if (!t->pending) {
list_add_tail(&t->entry2, &t->ctx->pending_timers);
t->pending = 1;
r = triton_queue_ctx(t->ctx);
} else
r = 0;
} else
r = 0;
spin_unlock(&t->ctx->lock);
if (r)
triton_thread_wakeup(t->ctx->thread);
}
}
return NULL;
}
int __export triton_timer_add(struct triton_context_t *ctx, struct triton_timer_t *ud, int abs_time)
{
struct _triton_timer_t *t = mempool_alloc(timer_pool);
memset(t, 0, sizeof(*t));
t->ud = ud;
t->epoll_event.data.ptr = t;
t->epoll_event.events = EPOLLIN | EPOLLET;
if (ctx)
t->ctx = (struct _triton_context_t *)ctx->tpd;
else
t->ctx = (struct _triton_context_t *)default_ctx->tpd;
t->fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK);
if (t->fd < 0) {
triton_log_error("timer:timerfd_create: %s" ,strerror(errno));
mempool_free(t);
return -1;
}
ud->tpd = t;
if (triton_timer_mod(ud, abs_time)) {
close(t->fd);
mempool_free(t);
return -1;
}
spin_lock(&t->ctx->lock);
list_add_tail(&t->entry, &t->ctx->timers);
spin_unlock(&t->ctx->lock);
if (epoll_ctl(epoll_fd, EPOLL_CTL_ADD, t->fd, &t->epoll_event)) {
triton_log_error("timer:epoll_ctl: %s", strerror(errno));
spin_lock(&t->ctx->lock);
t->ud = NULL;
list_del(&t->entry);
spin_unlock(&t->ctx->lock);
close(t->fd);
mempool_free(t);
ud->tpd = NULL;
return -1;
}
return 0;
}
int __export triton_timer_mod(struct triton_timer_t *ud,int abs_time)
{
struct _triton_timer_t *t = (struct _triton_timer_t *)ud->tpd;
struct itimerspec ts = {
.it_value.tv_sec = ud->expire_tv.tv_sec,
.it_value.tv_nsec = ud->expire_tv.tv_usec * 1000,
.it_interval.tv_sec = ud->period / 1000,
.it_interval.tv_nsec = (ud->period % 1000) * 1000,
};
if (ud->expire_tv.tv_sec == 0 && ud->expire_tv.tv_usec == 0)
ts.it_value = ts.it_interval;
if (timerfd_settime(t->fd, abs_time ? TFD_TIMER_ABSTIME : 0, &ts, NULL)) {
triton_log_error("timer:timerfd_settime: %s", strerror(errno));
return -1;
}
return 0;
}
void __export triton_timer_del(struct triton_timer_t *ud)
{
struct _triton_timer_t *t = (struct _triton_timer_t *)ud->tpd;
epoll_ctl(epoll_fd, EPOLL_CTL_DEL, t->fd, &t->epoll_event);
close(t->fd);
spin_lock(&t->ctx->lock);
list_del(&t->entry);
if (t->pending)
list_del(&t->entry2);
t->ud = NULL;
spin_unlock(&t->ctx->lock);
sched_yield();
mempool_free(t);
}
|
