Base: First pass at having base.dll: definition of

base/synchronization/waitable_event.h

 // Copyright (c) 2011 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.
 
 #ifndef BASE_SYNCHRONIZATION_WAITABLE_EVENT_H_
 #define BASE_SYNCHRONIZATION_WAITABLE_EVENT_H_
 #pragma once
 
+#include "base/base_api.h"
 #include "base/basictypes.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 #if defined(OS_POSIX)
 #include <list>
 #include <utility>
 #include "base/ref_counted.h"
@@ skipping 15 matching lines @@
 // Use a WaitableEvent when you would otherwise use a Lock+ConditionVariable to
 // protect a simple boolean value.  However, if you find yourself using a
 // WaitableEvent in conjunction with a Lock to wait for a more complex state
 // change (e.g., for an item to be added to a queue), then you should probably
 // be using a ConditionVariable instead of a WaitableEvent.
 //
 // NOTE: On Windows, this class provides a subset of the functionality afforded
 // by a Windows event object.  This is intentional.  If you are writing Windows
 // specific code and you need other features of a Windows event, then you might
 // be better off just using an Windows event directly.
-class WaitableEvent {
+class BASE_API WaitableEvent {
  public:
   // If manual_reset is true, then to set the event state to non-signaled, a
   // consumer must call the Reset method.  If this parameter is false, then the
   // system automatically resets the event state to non-signaled after a single
   // waiting thread has been released.
   WaitableEvent(bool manual_reset, bool initially_signaled);
 
 #if defined(OS_WIN)
   // Create a WaitableEvent from an Event HANDLE which has already been
   // created. This objects takes ownership of the HANDLE and will close it when
@@ skipping 116 matching lines @@
 
   scoped_refptr<WaitableEventKernel> kernel_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(WaitableEvent);
 };
 
 }  // namespace base
 
 #endif  // BASE_SYNCHRONIZATION_WAITABLE_EVENT_H_