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This reverts commit cc2ac1c.
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Igor Zinkovsky
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Oct 28, 2011
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ccd8b55
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// Copyright Joyent, Inc. and other Node contributors. | ||
// | ||
// Permission is hereby granted, free of charge, to any person obtaining a | ||
// copy of this software and associated documentation files (the | ||
// "Software"), to deal in the Software without restriction, including | ||
// without limitation the rights to use, copy, modify, merge, publish, | ||
// distribute, sublicense, and/or sell copies of the Software, and to permit | ||
// persons to whom the Software is furnished to do so, subject to the | ||
// following conditions: | ||
// | ||
// The above copyright notice and this permission notice shall be included | ||
// in all copies or substantial portions of the Software. | ||
// | ||
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | ||
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN | ||
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, | ||
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | ||
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | ||
// USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
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#include <node_io_watcher.h> | ||
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#include <node.h> | ||
#include <v8.h> | ||
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#include <assert.h> | ||
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namespace node { | ||
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using namespace v8; | ||
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Persistent<FunctionTemplate> IOWatcher::constructor_template; | ||
Persistent<String> callback_symbol; | ||
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void IOWatcher::Initialize(Handle<Object> target) { | ||
HandleScope scope; | ||
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Local<FunctionTemplate> t = FunctionTemplate::New(IOWatcher::New); | ||
constructor_template = Persistent<FunctionTemplate>::New(t); | ||
constructor_template->InstanceTemplate()->SetInternalFieldCount(1); | ||
constructor_template->SetClassName(String::NewSymbol("IOWatcher")); | ||
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NODE_SET_PROTOTYPE_METHOD(constructor_template, "start", IOWatcher::Start); | ||
NODE_SET_PROTOTYPE_METHOD(constructor_template, "stop", IOWatcher::Stop); | ||
NODE_SET_PROTOTYPE_METHOD(constructor_template, "set", IOWatcher::Set); | ||
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target->Set(String::NewSymbol("IOWatcher"), constructor_template->GetFunction()); | ||
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callback_symbol = NODE_PSYMBOL("callback"); | ||
} | ||
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void IOWatcher::Callback(EV_P_ ev_io *w, int revents) { | ||
IOWatcher *io = static_cast<IOWatcher*>(w->data); | ||
assert(w == &io->watcher_); | ||
HandleScope scope; | ||
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Local<Value> callback_v = io->handle_->Get(callback_symbol); | ||
if (!callback_v->IsFunction()) { | ||
io->Stop(); | ||
return; | ||
} | ||
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Local<Function> callback = Local<Function>::Cast(callback_v); | ||
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TryCatch try_catch; | ||
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Local<Value> argv[2]; | ||
argv[0] = Local<Value>::New(revents & EV_READ ? True() : False()); | ||
argv[1] = Local<Value>::New(revents & EV_WRITE ? True() : False()); | ||
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callback->Call(io->handle_, 2, argv); | ||
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if (try_catch.HasCaught()) { | ||
FatalException(try_catch); | ||
} | ||
} | ||
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// | ||
// var io = new process.IOWatcher(); | ||
// process.callback = function (readable, writable) { ... }; | ||
// io.set(fd, true, false); | ||
// io.start(); | ||
// | ||
Handle<Value> IOWatcher::New(const Arguments& args) { | ||
if (!args.IsConstructCall()) { | ||
return FromConstructorTemplate(constructor_template, args); | ||
} | ||
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HandleScope scope; | ||
IOWatcher *s = new IOWatcher(); | ||
s->Wrap(args.This()); | ||
return args.This(); | ||
} | ||
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Handle<Value> IOWatcher::Start(const Arguments& args) { | ||
HandleScope scope; | ||
IOWatcher *io = ObjectWrap::Unwrap<IOWatcher>(args.Holder()); | ||
io->Start(); | ||
return Undefined(); | ||
} | ||
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Handle<Value> IOWatcher::Stop(const Arguments& args) { | ||
HandleScope scope; | ||
IOWatcher *io = ObjectWrap::Unwrap<IOWatcher>(args.Holder()); | ||
io->Stop(); | ||
return Undefined(); | ||
} | ||
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void IOWatcher::Start() { | ||
if (!ev_is_active(&watcher_)) { | ||
ev_io_start(EV_DEFAULT_UC_ &watcher_); | ||
Ref(); | ||
} | ||
} | ||
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void IOWatcher::Stop() { | ||
if (ev_is_active(&watcher_)) { | ||
ev_io_stop(EV_DEFAULT_UC_ &watcher_); | ||
Unref(); | ||
} | ||
} | ||
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Handle<Value> IOWatcher::Set(const Arguments& args) { | ||
HandleScope scope; | ||
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IOWatcher *io = ObjectWrap::Unwrap<IOWatcher>(args.Holder()); | ||
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if (!args[0]->IsInt32()) { | ||
return ThrowException(Exception::TypeError( | ||
String::New("First arg should be a file descriptor."))); | ||
} | ||
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int fd = args[0]->Int32Value(); | ||
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if (!args[1]->IsBoolean()) { | ||
return ThrowException(Exception::TypeError( | ||
String::New("Second arg should boolean (readable)."))); | ||
} | ||
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int events = 0; | ||
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if (args[1]->IsTrue()) events |= EV_READ; | ||
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if (!args[2]->IsBoolean()) { | ||
return ThrowException(Exception::TypeError( | ||
String::New("Third arg should boolean (writable)."))); | ||
} | ||
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if (args[2]->IsTrue()) events |= EV_WRITE; | ||
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assert(!io->watcher_.active); | ||
ev_io_set(&io->watcher_, fd, events); | ||
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return Undefined(); | ||
} | ||
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} // namespace node |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,64 @@ | ||
// Copyright Joyent, Inc. and other Node contributors. | ||
// | ||
// Permission is hereby granted, free of charge, to any person obtaining a | ||
// copy of this software and associated documentation files (the | ||
// "Software"), to deal in the Software without restriction, including | ||
// without limitation the rights to use, copy, modify, merge, publish, | ||
// distribute, sublicense, and/or sell copies of the Software, and to permit | ||
// persons to whom the Software is furnished to do so, subject to the | ||
// following conditions: | ||
// | ||
// The above copyright notice and this permission notice shall be included | ||
// in all copies or substantial portions of the Software. | ||
// | ||
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | ||
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN | ||
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, | ||
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | ||
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | ||
// USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
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#ifndef NODE_IO_H_ | ||
#define NODE_IO_H_ | ||
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#include <node_object_wrap.h> | ||
#include <uv-private/ev.h> | ||
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namespace node { | ||
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class IOWatcher : ObjectWrap { | ||
public: | ||
static void Initialize(v8::Handle<v8::Object> target); | ||
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protected: | ||
static v8::Persistent<v8::FunctionTemplate> constructor_template; | ||
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IOWatcher() : ObjectWrap() { | ||
ev_init(&watcher_, IOWatcher::Callback); | ||
watcher_.data = this; | ||
} | ||
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~IOWatcher() { | ||
ev_io_stop(EV_DEFAULT_UC_ &watcher_); | ||
assert(!ev_is_active(&watcher_)); | ||
assert(!ev_is_pending(&watcher_)); | ||
} | ||
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static v8::Handle<v8::Value> New(const v8::Arguments& args); | ||
static v8::Handle<v8::Value> Start(const v8::Arguments& args); | ||
static v8::Handle<v8::Value> Stop(const v8::Arguments& args); | ||
static v8::Handle<v8::Value> Set(const v8::Arguments& args); | ||
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private: | ||
static void Callback(EV_P_ ev_io *watcher, int revents); | ||
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void Start(); | ||
void Stop(); | ||
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ev_io watcher_; | ||
}; | ||
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} // namespace node | ||
#endif // NODE_IO_H_ | ||
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