startupcache/nsIStartupCache.idl
author Gregory Szorc <gps@mozilla.com>
Wed, 28 Jan 2015 13:37:00 -0800
branchMOBILE150_2012081422_RELBRANCH
changeset 243288 43922b0220c7bf561de4c7c9dac3ee741fb3ba68
parent 98529 f4157e8c410708d76703f19e4dfb61859bfe32d8
child 108463 a16372ce30b5f6b747246b01fcd215a4bf3b6342
permissions -rw-r--r--
Close old release branch MOBILE150_2012081422_RELBRANCH

/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsIInputStream.idl"
#include "nsISupports.idl"
#include "nsIObserver.idl"
#include "nsIObjectOutputStream.idl"

[uuid(c1b3796b-33af-4ff0-b83d-8eb0ca2c080f)]
interface nsIStartupCache : nsISupports
{

  /** This interface is provided for testing purposes only, basically
   *  just to solve link vagaries. See docs in StartupCache.h
   *  GetBuffer, PutBuffer, and InvalidateCache act as described 
   *  in that file. */

  PRUint32 getBuffer(in string aID, out charPtr aBuffer);
  void putBuffer(in string aID, in string aBuffer, 
                            in PRUint32 aLength);
 
  void invalidateCache();
  
  /** In debug builds, wraps this object output stream with a stream that will 
   *  detect and prevent the write of a multiply-referenced non-singleton object 
   *  during serialization. In non-debug, returns an add-ref'd pointer to
   *  original stream, unwrapped. */
  nsIObjectOutputStream getDebugObjectOutputStream(in nsIObjectOutputStream aStream);

  /* Allows clients to check whether the one-time writeout after startup 
   * has finished yet, and also to set this variable as needed (so test
   * code can fire mulitple startup writes if needed).
   */
  boolean startupWriteComplete();
  void resetStartupWriteTimer();

  /* Instruct clients to always post cache ages to Telemetry, even in
     cases where it would not normally make sense.  */
  void recordAgesAlways();

  /* Allows clients to simulate the behavior of ObserverService. */
  readonly attribute nsIObserver observer;
};