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node/src/node_idle_watcher.cc at master · subtle/node · GitHub
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//
Copyright 2009 Ryan Dahl <ry@tinyclouds.org>
#
include
<
node_idle_watcher.h
>
#
include
<
node.h
>
#
include
<
v8.h
>
#
include
<
assert.h
>
namespace
node
{
using
namespace
v8
;
Persistent<FunctionTemplate> IdleWatcher::constructor_template;
static
Persistent<String> callback_symbol;
void
IdleWatcher::Initialize
(Handle<Object> target) {
HandleScope scope;
Local<FunctionTemplate> t =
FunctionTemplate::New
(IdleWatcher::New);
constructor_template = Persistent<FunctionTemplate>::
New
(t);
constructor_template->
InstanceTemplate
()->
SetInternalFieldCount
(
1
);
constructor_template->
SetClassName
(
String::NewSymbol
(
"
IdleWatcher
"
));
NODE_SET_PROTOTYPE_METHOD
(constructor_template,
"
start
"
, IdleWatcher::Start);
NODE_SET_PROTOTYPE_METHOD
(constructor_template,
"
stop
"
, IdleWatcher::Stop);
NODE_SET_PROTOTYPE_METHOD
(constructor_template,
"
setPriority
"
,
IdleWatcher::SetPriority);
target->
Set
(
String::NewSymbol
(
"
IdleWatcher
"
), constructor_template->
GetFunction
());
callback_symbol =
NODE_PSYMBOL
(
"
callback
"
);
}
Handle<Value>
IdleWatcher::SetPriority
(
const
Arguments& args) {
IdleWatcher *idle = ObjectWrap::Unwrap<IdleWatcher>(args.
Holder
());
HandleScope scope;
int
priority = args[
0
]->
Int32Value
();
ev_set_priority
(&idle->
watcher_
, priority);
return
Undefined
();
}
void
IdleWatcher::Callback
(
EV_P_
ev_idle *w,
int
revents) {
IdleWatcher *idle =
static_cast
<IdleWatcher*>(w->
data
);
assert
(w == &idle->
watcher_
);
assert
(revents ==
EV_IDLE
);
HandleScope scope;
Local<Value> callback_v = idle->
handle_
->
Get
(callback_symbol);
if
(!callback_v->
IsFunction
()) {
idle->
Stop
();
return
;
}
Local<Function> callback = Local<Function>::
Cast
(callback_v);
TryCatch try_catch;
callback->
Call
(idle->
handle_
,
0
,
NULL
);
if
(try_catch.
HasCaught
()) {
FatalException
(try_catch);
}
}
//
//
var idle = new process.IdleWatcher();
//
idle.callback = function () { /* ... */ };
//
idle.start();
//
Handle<Value>
IdleWatcher::New
(
const
Arguments& args) {
HandleScope scope;
IdleWatcher *s =
new
IdleWatcher
();
s->
Wrap
(args.
This
());
return
args.
This
();
}
Handle<Value>
IdleWatcher::Start
(
const
Arguments& args) {
HandleScope scope;
IdleWatcher *idle = ObjectWrap::Unwrap<IdleWatcher>(args.
Holder
());
idle->
Start
();
return
Undefined
();
}
void
IdleWatcher::Start
() {
if
(!watcher_.
active
) {
ev_idle_start
(
EV_DEFAULT_UC_
&watcher_);
Ref
();
}
}
Handle<Value>
IdleWatcher::Stop
(
const
Arguments& args) {
HandleScope scope;
IdleWatcher *idle = ObjectWrap::Unwrap<IdleWatcher>(args.
Holder
());
idle->
Stop
();
return
Undefined
();
}
void
IdleWatcher::Stop
() {
if
(watcher_.
active
) {
ev_idle_stop
(
EV_DEFAULT_UC_
&watcher_);
Unref
();
}
}
}
//
namespace node
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