remoting/host/plugin/host_log_handler.h

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef REMOTING_HOST_PLUGIN_HOST_LOG_HANDLER_H_
   6 #define REMOTING_HOST_PLUGIN_HOST_LOG_HANDLER_H_
   7
   8 #include <string>
   9
  10 namespace remoting {
  11
  12 class HostNPScriptObject;
  13
  14 class HostLogHandler {
  15  public:
  16   // Register the log handler.
  17   // These should be called from the plugin init/destroy methods so that they
  18   // are only called once per plugin process (not once per plugin instance).
  19   static void RegisterLogMessageHandler();
  20
  21   // We don't have the corresponding UnregisterLogMessageHandler because it
  22   // is not safe to call it when there are multiple threads that might be
  23   // logging.
  24
  25   static void RegisterLoggingScriptObject(HostNPScriptObject* script_object);
  26   static void UnregisterLoggingScriptObject(HostNPScriptObject* script_object);
  27
  28  private:
  29   // A Log Message Handler that is called after each LOG message has been
  30   // processed. This must be of type LogMessageHandlerFunction defined in
  31   // base/logging.h.
  32   static bool LogToUI(int severity, const char* file, int line,
  33                       size_t message_start, const std::string& str);
  34 };
  35
  36 }  // namespace remoting
  37
  38 #endif  // REMOTING_HOST_PLUGIN_HOST_LOG_HANDLER_H_