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
|
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <signal.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 md_thr;
static void *md_thread(void *arg);
int md_init(void)
{
epoll_fd = epoll_create(1);
if (epoll_fd < 0) {
perror("md:epoll_create");
return -1;
}
epoll_events = malloc(max_events * sizeof(struct epoll_event));
if (!epoll_events) {
fprintf(stderr,"md:cann't allocate memory\n");
return -1;
}
return 0;
}
void md_run(void)
{
if (pthread_create(&md_thr, NULL, md_thread, NULL)) {
triton_log_error("md:pthread_create: %s", strerror(errno));
_exit(-1);
}
}
void md_terminate(void)
{
pthread_cancel(md_thr);
pthread_join(md_thr, NULL);
}
static void *md_thread(void *arg)
{
int i,n,r;
struct triton_md_handler_t *h;
while(1) {
n = epoll_wait(epoll_fd, epoll_events, max_events, -1);
if (n < 0) {
if (errno == EINTR)
continue;
triton_log_error("md:epoll_wait: %s", strerror(errno));
_exit(-1);
}
for(i = 0; i < n; i++) {
h = (struct triton_md_handler_t *)epoll_events[i].data.ptr;
spin_lock(&h->ctx->lock);
h->trig_epoll_events |= epoll_events[i].events;
if (!h->pending) {
list_add_tail(&h->entry2, &h->ctx->pending_handlers);
h->pending = 1;
r = triton_queue_ctx(h->ctx);
} else
r = 0;
spin_unlock(&h->ctx->lock);
if (r)
triton_thread_wakeup(h->ctx->thread);
}
}
return NULL;
}
void __export triton_md_register_handler(struct triton_md_handler_t *h)
{
h->epoll_event.data.ptr = h;
if (!h->ctx)
h->ctx = default_ctx;
spin_lock(&h->ctx->lock);
list_add_tail(&h->entry, &h->ctx->handlers);
spin_unlock(&h->ctx->lock);
}
void __export triton_md_unregister_handler(struct triton_md_handler_t *h)
{
spin_lock(&h->ctx->lock);
list_del(&h->entry);
if (h->pending)
list_del(&h->entry2);
spin_unlock(&h->ctx->lock);
}
int __export triton_md_enable_handler(struct triton_md_handler_t *h, int mode)
{
int r;
int events = h->epoll_event.events;
if (mode & MD_MODE_READ)
h->epoll_event.events |= EPOLLIN;
if (mode & MD_MODE_WRITE)
h->epoll_event.events |= EPOLLOUT;
h->epoll_event.events |= EPOLLET;
if (events)
r = epoll_ctl(epoll_fd, EPOLL_CTL_MOD, h->fd, &h->epoll_event);
else
r = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, h->fd, &h->epoll_event);
if (r)
triton_log_error("md:epoll_ctl: %s",strerror(errno));
return r;
}
int __export triton_md_disable_handler(struct triton_md_handler_t *h,int mode)
{
int r=0;
if (!h->epoll_event.events)
return -1;
if (mode & MD_MODE_READ)
h->epoll_event.events &= ~EPOLLIN;
if (mode & MD_MODE_WRITE)
h->epoll_event.events &= ~EPOLLOUT;
if (h->epoll_event.events & (EPOLLIN | EPOLLOUT))
r = epoll_ctl(epoll_fd, EPOLL_CTL_MOD, h->fd, &h->epoll_event);
else {
h->epoll_event.events = 0;
r = epoll_ctl(epoll_fd, EPOLL_CTL_DEL, h->fd, NULL);
}
if (r)
triton_log_error("md:epoll_ctl: %s",strerror(errno));
return r;
}
|
