1                 : /*
       2                 :  * Copyright 2010 The Native Client Authors. All rights reserved.
       3                 :  * Use of this source code is governed by a BSD-style license that can
       4                 :  * be found in the LICENSE file.
       5                 :  */
       6                 : 
       7                 : 
       8                 : // This module defines the interface for using platform specific events.
       9                 : // It is expected that the Allocation function will return NULL on any
      10                 : // failure instead of throwing an exception.  This module is expected
      11                 : // to throw a std::exception when an unexpected OS error is encoutered.
      12                 : #ifndef NATIVE_CLIENT_PORT_EVENT_H_
      13                 : #define NATIVE_CLIENT_PORT_EVENT_H_ 1
      14                 : 
      15                 : namespace port {
      16                 : 
      17               2 : class IEvent {
      18                 :  public:
      19                 :   virtual void Signal() = 0;    // Free one waiting thread
      20                 :   virtual void Wait() = 0;      // Suspend this thread waiting for signal
      21                 : 
      22                 :   static IEvent *Allocate();    // Allocate an IEvent
      23                 :   static void Free(IEvent *e);  // Free the IEvent
      24                 : 
      25                 :  protected:
      26               0 :   virtual ~IEvent() {}          // Prevent delete of base pointer
      27                 : };
      28                 : 
      29                 : 
      30                 : }  // namespace port
      31                 : 
      32                 : #endif  // NATIVE_CLIENT_PORT_EVENT_H_
      33                 :