xpcom/base/nsMemoryInfoDumper.h
author Simon Sapin <simon.sapin@exyr.org>
Mon, 31 Dec 2018 01:01:49 +0100
changeset 452667 91e7ea77c846ae753fb3a28ab81598d2dc7ac865
parent 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1518045 - Publish selectors 0.21.0 on crates.io. r=emilio This cherry-picks https://github.com/servo/servo/pull/22577, with the relevant lockfile update.

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */

#ifndef mozilla_nsMemoryInfoDumper_h
#define mozilla_nsMemoryInfoDumper_h

#include "nsIMemoryInfoDumper.h"
#include <stdio.h>

/**
 * This class facilitates dumping information about our memory usage to disk.
 *
 * Its cpp file also has Linux-only code which watches various OS signals and
 * dumps memory info upon receiving a signal.  You can activate these listeners
 * by calling Initialize().
 */
class nsMemoryInfoDumper : public nsIMemoryInfoDumper {
  virtual ~nsMemoryInfoDumper();

 public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIMEMORYINFODUMPER

  nsMemoryInfoDumper();

  static void Initialize();

#ifdef MOZ_DMD
  // Open an appropriately named file for a DMD report.  If DMD is
  // disabled, return a null FILE* instead.
  static nsresult OpenDMDFile(const nsAString& aIdentifier, int aPid,
                              FILE** aOutFile);
  // Write a DMD report to the given file and close it.
  static nsresult DumpDMDToFile(FILE* aFile);
#endif
};

#define NS_MEMORY_INFO_DUMPER_CID                    \
  {                                                  \
    0x00bd71fb, 0x7f09, 0x4ec3, {                    \
      0x96, 0xaf, 0xa0, 0xb5, 0x22, 0xb7, 0x79, 0x69 \
    }                                                \
  }

#endif