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
|
// passed to the real C compiler
#define LIBEV_EMBED 1
#ifdef _WIN32
#define EV_STANDALONE 1
#include "libev_vfd.h"
#endif
#include "libev.h"
static void
_gevent_noop(struct ev_loop *_loop, struct ev_timer *w, int revents) { }
void (*gevent_noop)(struct ev_loop *, struct ev_timer *, int) = &_gevent_noop;
static int python_callback(void* handle, int revents);
static void python_handle_error(void* handle, int revents);
static void python_stop(void* handle);
static void _gevent_generic_callback(struct ev_loop* loop,
struct ev_watcher* watcher,
int revents)
{
void* handle = watcher->data;
int cb_result = python_callback(handle, revents);
switch(cb_result) {
case -1:
// in case of exception, call self.loop.handle_error;
// this function is also responsible for stopping the watcher
// and allowing memory to be freed
python_handle_error(handle, revents);
break;
case 1:
// Code to stop the event. Note that if python_callback
// has disposed of the last reference to the handle,
// `watcher` could now be invalid/disposed memory!
if (!ev_is_active(watcher)) {
python_stop(handle);
}
break;
case 2:
// watcher is already stopped and dead, nothing to do.
break;
default:
fprintf(stderr,
"WARNING: gevent: Unexpected return value %d from Python callback "
"for watcher %p and handle %d\n",
cb_result,
watcher, handle);
// XXX: Possible leaking of resources here? Should we be
// closing the watcher?
}
}
static void gevent_zero_timer(struct ev_timer* handle)
{
memset(handle, 0, sizeof(struct ev_timer));
}
static void gevent_zero_check(struct ev_check* handle)
{
memset(handle, 0, sizeof(struct ev_check));
}
static void gevent_zero_prepare(struct ev_prepare* handle)
{
memset(handle, 0, sizeof(struct ev_prepare));
}
|
