summaryrefslogtreecommitdiff
path: root/deps/hiredis/adapters/libevent.h
blob: dc1f5c73989c5ab97f238f11bafc560c212db3de (plain)
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
#include <sys/types.h>
#include <event.h>
#include "../hiredis.h"
#include "../async.h"

typedef struct redisLibeventEvents {
    redisAsyncContext *context;
    struct event rev, wev;
} redisLibeventEvents;

void redisLibeventReadEvent(int fd, short event, void *arg) {
    ((void)fd); ((void)event);
    redisLibeventEvents *e = (redisLibeventEvents*)arg;
    redisAsyncHandleRead(e->context);
}

void redisLibeventWriteEvent(int fd, short event, void *arg) {
    ((void)fd); ((void)event);
    redisLibeventEvents *e = (redisLibeventEvents*)arg;
    redisAsyncHandleWrite(e->context);
}

void redisLibeventAddRead(void *privdata) {
    redisLibeventEvents *e = (redisLibeventEvents*)privdata;
    event_add(&e->rev,NULL);
}

void redisLibeventDelRead(void *privdata) {
    redisLibeventEvents *e = (redisLibeventEvents*)privdata;
    event_del(&e->rev);
}

void redisLibeventAddWrite(void *privdata) {
    redisLibeventEvents *e = (redisLibeventEvents*)privdata;
    event_add(&e->wev,NULL);
}

void redisLibeventDelWrite(void *privdata) {
    redisLibeventEvents *e = (redisLibeventEvents*)privdata;
    event_del(&e->wev);
}

void redisLibeventCleanup(void *privdata) {
    redisLibeventEvents *e = (redisLibeventEvents*)privdata;
    event_del(&e->rev);
    event_del(&e->wev);
    free(e);
}

int redisLibeventAttach(redisAsyncContext *ac, struct event_base *base) {
    redisContext *c = &(ac->c);
    redisLibeventEvents *e;

    /* Nothing should be attached when something is already attached */
    if (ac->_adapter_data != NULL)
        return REDIS_ERR;

    /* Create container for context and r/w events */
    e = (redisLibeventEvents*)malloc(sizeof(*e));
    e->context = ac;

    /* Register functions to start/stop listening for events */
    ac->evAddRead = redisLibeventAddRead;
    ac->evDelRead = redisLibeventDelRead;
    ac->evAddWrite = redisLibeventAddWrite;
    ac->evDelWrite = redisLibeventDelWrite;
    ac->evCleanup = redisLibeventCleanup;
    ac->_adapter_data = e;

    /* Initialize and install read/write events */
    event_set(&e->rev,c->fd,EV_READ,redisLibeventReadEvent,e);
    event_set(&e->wev,c->fd,EV_WRITE,redisLibeventWriteEvent,e);
    event_base_set(base,&e->rev);
    event_base_set(base,&e->wev);
    return REDIS_OK;
}