[NaCl SDK} Add EventListener and EventEmitter to support epoll.

native_client_sdk/src/libraries/sdk_util/scoped_ref.h

 /* Copyright 2013 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */

[Sam Clegg, 2013/07/17 17:34:56]

C++ comment

 
 #ifndef LIBRARIES_SDK_UTIL_SCOPED_REF_H_
 #define LIBRARIES_SDK_UTIL_SCOPED_REF_H_
 
 #include <stdlib.h>
 
 #include "sdk_util/macros.h"
 #include "sdk_util/ref_object.h"
 
 class ScopedRefBase {
@@ skipping 48 matching lines @@
 
   template <typename U>
   bool operator!=(const ScopedRef<U>& p) const {
     return get() != p.get();
   }
 
  public:
   T& operator*() const { return *get(); }
   T* operator->() const { return get(); }
 
+  // Provided for Map and Set
+  bool operator<(const ScopedRef& other) const {

[binji, 2013/07/17 22:23:20]

Now that I've seen the use case, you could just add this to EventInfo directly
(rather than add it for all RefObjects).

[noelallen1, 2013/07/18 22:18:16]

Done.

+    return ptr_ < other.ptr_;
+  }
+
  private:
   typedef void (ScopedRef::*bool_as_func_ptr)() const;
   void bool_as_func_impl() const {};
 
  public:
   operator bool_as_func_ptr() const {
     return (ptr_ != NULL) ? &ScopedRef::bool_as_func_impl : 0;
   }
 };
 
 #endif  // LIBRARIES_SDK_UTIL_SCOPED_REF_H_