gecko/tools/profiler/shared-libraries.h

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Mozilla code.
 *
 * The Initial Developer of the Original Code is the Mozilla Foundation.
 * Portions created by the Initial Developer are Copyright (C) 2011
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *  Jeff Muizelaar <jmuizelaar@mozilla.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include <vector>
#include <string.h>
#include <stdlib.h>
#include <mozilla/StandardInteger.h>

class SharedLibrary {
public:
  SharedLibrary(unsigned long aStart, unsigned long aEnd, unsigned long aOffset, char *aName)
    : mStart(aStart)
    , mEnd(aEnd)
    , mOffset(aOffset)
    , mName(strdup(aName))
  {}

  SharedLibrary(const SharedLibrary& aEntry)
    : mStart(aEntry.mStart)
    , mEnd(aEntry.mEnd)
    , mOffset(aEntry.mOffset)
    , mName(strdup(aEntry.mName))
  {}

  SharedLibrary& operator=(const SharedLibrary& aEntry)
  {
    // Gracefully handle self assignment
    if (this == &aEntry) return *this;

    mStart = aEntry.mStart;
    mEnd = aEntry.mEnd;
    mOffset = aEntry.mOffset;
    if (mName)
      free(mName);
    mName = strdup(aEntry.mName);
    return *this;
  }

  ~SharedLibrary()
  {
    free(mName);
  }

  uintptr_t GetStart() { return mStart; }
  uintptr_t GetEnd() { return mEnd; }
  char* GetName() { return mName; }

private:
  explicit SharedLibrary() {}

  uintptr_t mStart;
  uintptr_t mEnd;
  uintptr_t mOffset;
  char *mName;
};

class SharedLibraryInfo {
public:
  static SharedLibraryInfo GetInfoForSelf();
  SharedLibraryInfo() {}

  void AddSharedLibrary(SharedLibrary entry)
  {
    mEntries.push_back(entry);
  }

  SharedLibrary& GetEntry(size_t i)
  {
    return mEntries[i];
  }

  size_t GetSize()
  {
    return mEntries.size();
  }
private:
  std::vector<SharedLibrary> mEntries;
};