node_io_watcher.h

// Copyright Joyent, Inc. and other Node contributors.
//
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// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
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// 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.
//
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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#ifndef NODE_IO_H_
#define NODE_IO_H_

#include <node_object_wrap.h>
#include <uv-private/ev.h>

namespace node {

class IOWatcher : ObjectWrap {
 public:
  static void Initialize(v8::Handle<v8::Object> target);

 protected:
  static v8::Persistent<v8::FunctionTemplate> constructor_template;

  IOWatcher() : ObjectWrap() {
    ev_init(&watcher_, IOWatcher::Callback);
    watcher_.data = this;
  }

  ~IOWatcher() {
    ev_io_stop(EV_DEFAULT_UC_ &watcher_);
    assert(!ev_is_active(&watcher_));
    assert(!ev_is_pending(&watcher_));
  }

  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);

 private:
  static void Callback(EV_P_ ev_io *watcher, int revents);

  void Start();
  void Stop();

  ev_io watcher_;
};

}  // namespace node
#endif  // NODE_IO_H_