forked from nodejs/node-v0.x-archive
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathnode_timer.cc
More file actions
139 lines (94 loc) · 3.28 KB
/
node_timer.cc
File metadata and controls
139 lines (94 loc) · 3.28 KB
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
#include <node.h>
#include <node_timer.h>
#include <assert.h>
using namespace v8;
using namespace node;
static Persistent<String> repeat_symbol;
void Timer::Initialize (Handle<Object> target) {
HandleScope scope;
Local<FunctionTemplate> t = BuildTemplate<Timer>("Timer");
repeat_symbol = NODE_PSYMBOL("repeat");
NODE_SET_PROTOTYPE_METHOD(t, "start", Timer::Start);
NODE_SET_PROTOTYPE_METHOD(t, "stop", Timer::Stop);
NODE_SET_PROTOTYPE_METHOD(t, "again", Timer::Again);
t->InstanceTemplate()->SetAccessor(repeat_symbol,
RepeatGetter,
RepeatSetter);
target->Set(String::NewSymbol("Timer"), t->GetFunction());
}
Handle<Value> Timer::RepeatGetter(Local<String> property,
const AccessorInfo& info) {
HandleScope scope;
Timer *timer = ObjectWrap::Unwrap<Timer>(info.This());
assert(timer);
assert (property == repeat_symbol);
Local<Integer> v = Integer::New(timer->watcher_.repeat);
return scope.Close(v);
}
void Timer::RepeatSetter(Local<String> property,
Local<Value> value,
const AccessorInfo& info) {
HandleScope scope;
Timer *timer = ObjectWrap::Unwrap<Timer>(info.This());
assert(timer);
assert(property == repeat_symbol);
timer->watcher_.repeat = NODE_V8_UNIXTIME(value);
}
void Timer::Callback(EV_P_ ev_timer *watcher, int revents) {
Timer *timer = static_cast<Timer*>(watcher->data);
assert(revents == EV_TIMEOUT);
HandleScope scope;
timer->MakeCallback(0, NULL);
if (timer->watcher_.repeat == 0) {
timer->Inactive();
}
}
Handle<Value> Timer::Start(const Arguments& args) {
HandleScope scope;
Timer *timer = ObjectWrap::Unwrap<Timer>(args.Holder());
if (args.Length() != 2) {
return ThrowException(String::New("Bad arguments"));
}
bool was_active = ev_is_active(&timer->watcher_);
ev_tstamp after = NODE_V8_UNIXTIME(args[0]);
ev_tstamp repeat = NODE_V8_UNIXTIME(args[1]);
ev_timer_init(&timer->watcher_, Timer::Callback, after, repeat);
timer->watcher_.data = timer;
// Update the event loop time. Need to call this because processing JS can
// take non-negligible amounts of time.
ev_now_update(EV_DEFAULT_UC);
ev_timer_start(EV_DEFAULT_UC_ &timer->watcher_);
if (!was_active) timer->Active();
return Undefined();
}
Handle<Value> Timer::Stop(const Arguments& args) {
HandleScope scope;
Timer *timer = ObjectWrap::Unwrap<Timer>(args.Holder());
timer->Stop();
return Undefined();
}
void Timer::Stop () {
if (watcher_.active) {
ev_timer_stop(EV_DEFAULT_UC_ &watcher_);
Inactive();
}
}
Handle<Value> Timer::Again(const Arguments& args) {
HandleScope scope;
Timer *timer = ObjectWrap::Unwrap<Timer>(args.Holder());
int was_active = ev_is_active(&timer->watcher_);
if (args.Length() > 0) {
ev_tstamp repeat = NODE_V8_UNIXTIME(args[0]);
if (repeat > 0) timer->watcher_.repeat = repeat;
}
ev_timer_again(EV_DEFAULT_UC_ &timer->watcher_);
// ev_timer_again can start or stop the watcher.
// So we need to check what happened and adjust the ref count
// appropriately.
if (ev_is_active(&timer->watcher_)) {
if (!was_active) timer->Active();
} else {
if (was_active) timer->Inactive();
}
return Undefined();
}