gecko-dev/dom/base/nsWindowSizes.h

/* -*- 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 nsWindowSizes_h
#define nsWindowSizes_h

#include "mozilla/Assertions.h"
#include "mozilla/PodOperations.h"
#include "mozilla/SizeOfState.h"

class nsTabSizes {
 public:
  enum Kind {
    DOM,    // DOM stuff.
    Style,  // Style stuff.
    Other   // Everything else.
  };

  nsTabSizes() : mDom(0), mStyle(0), mOther(0) {}

  void add(Kind kind, size_t n) {
    switch (kind) {
      case DOM:
        mDom += n;
        break;
      case Style:
        mStyle += n;
        break;
      case Other:
        mOther += n;
        break;
      default:
        MOZ_CRASH("bad nsTabSizes kind");
    }
  }

  size_t mDom;
  size_t mStyle;
  size_t mOther;
};

#define ZERO_SIZE(kind, mSize) mSize(0),
#define ADD_TO_TAB_SIZES(kind, mSize) aSizes->add(nsTabSizes::kind, mSize);
#define ADD_TO_TOTAL_SIZE(kind, mSize) total += mSize;
#define DECL_SIZE(kind, mSize) size_t mSize;

#define NS_STYLE_SIZES_FIELD(name_) mStyle##name_

struct nsStyleSizes {
  nsStyleSizes()
      :
#define STYLE_STRUCT(name_) NS_STYLE_SIZES_FIELD(name_)(0),
#include "nsStyleStructList.h"
#undef STYLE_STRUCT

        dummy() {
  }

  void addToTabSizes(nsTabSizes* aSizes) const {
#define STYLE_STRUCT(name_) \
  aSizes->add(nsTabSizes::Style, NS_STYLE_SIZES_FIELD(name_));
#include "nsStyleStructList.h"
#undef STYLE_STRUCT
  }

  size_t getTotalSize() const {
    size_t total = 0;

#define STYLE_STRUCT(name_) total += NS_STYLE_SIZES_FIELD(name_);
#include "nsStyleStructList.h"
#undef STYLE_STRUCT

    return total;
  }

#define STYLE_STRUCT(name_) size_t NS_STYLE_SIZES_FIELD(name_);
#include "nsStyleStructList.h"
#undef STYLE_STRUCT

  // Present just to absorb the trailing comma in the constructor.
  int dummy;
};

#define NS_ARENA_SIZES_FIELD(classname) mArena##classname

struct nsArenaSizes {
#define FOR_EACH_SIZE(MACRO) \
  MACRO(Other, mLineBoxes)   \
  MACRO(Style, mRuleNodes)   \
  MACRO(Style, mComputedStyles)

  nsArenaSizes()
      : FOR_EACH_SIZE(ZERO_SIZE)
#define FRAME_ID(classname, ...) NS_ARENA_SIZES_FIELD(classname)(0),
#define ABSTRACT_FRAME_ID(...)
#include "nsFrameIdList.h"
#undef FRAME_ID
#undef ABSTRACT_FRAME_ID

            dummy() {
  }

  void addToTabSizes(nsTabSizes* aSizes) const {
    FOR_EACH_SIZE(ADD_TO_TAB_SIZES)

#define FRAME_ID(classname, ...) \
  aSizes->add(nsTabSizes::Other, NS_ARENA_SIZES_FIELD(classname));
#define ABSTRACT_FRAME_ID(...)
#include "nsFrameIdList.h"
#undef FRAME_ID
#undef ABSTRACT_FRAME_ID
  }

  size_t getTotalSize() const {
    size_t total = 0;

    FOR_EACH_SIZE(ADD_TO_TOTAL_SIZE)

#define FRAME_ID(classname, ...) total += NS_ARENA_SIZES_FIELD(classname);
#define ABSTRACT_FRAME_ID(...)
#include "nsFrameIdList.h"
#undef FRAME_ID
#undef ABSTRACT_FRAME_ID

    return total;
  }

  FOR_EACH_SIZE(DECL_SIZE)

#define FRAME_ID(classname, ...) size_t NS_ARENA_SIZES_FIELD(classname);
#define ABSTRACT_FRAME_ID(...)
#include "nsFrameIdList.h"
#undef FRAME_ID
#undef ABSTRACT_FRAME_ID

  // Present just to absorb the trailing comma in the constructor.
  int dummy;

#undef FOR_EACH_SIZE
};

class nsWindowSizes {
#define FOR_EACH_SIZE(MACRO)                                 \
  MACRO(DOM, mDOMElementNodesSize)                           \
  MACRO(DOM, mDOMTextNodesSize)                              \
  MACRO(DOM, mDOMCDATANodesSize)                             \
  MACRO(DOM, mDOMCommentNodesSize)                           \
  MACRO(DOM, mDOMEventTargetsSize)                           \
  MACRO(DOM, mDOMMediaQueryLists)                            \
  MACRO(DOM, mDOMPerformanceUserEntries)                     \
  MACRO(DOM, mDOMPerformanceResourceEntries)                 \
  MACRO(DOM, mDOMOtherSize)                                  \
  MACRO(Style, mLayoutStyleSheetsSize)                       \
  MACRO(Style, mLayoutShadowDomStyleSheetsSize)              \
  MACRO(Style, mLayoutShadowDomAuthorStyles)                 \
  MACRO(Other, mLayoutPresShellSize)                         \
  MACRO(Style, mLayoutStyleSetsStylistRuleTree)              \
  MACRO(Style, mLayoutStyleSetsStylistElementAndPseudosMaps) \
  MACRO(Style, mLayoutStyleSetsStylistInvalidationMap)       \
  MACRO(Style, mLayoutStyleSetsStylistRevalidationSelectors) \
  MACRO(Style, mLayoutStyleSetsStylistOther)                 \
  MACRO(Style, mLayoutStyleSetsOther)                        \
  MACRO(Style, mLayoutElementDataObjects)                    \
  MACRO(Other, mLayoutTextRunsSize)                          \
  MACRO(Other, mLayoutPresContextSize)                       \
  MACRO(Other, mLayoutFramePropertiesSize)                   \
  MACRO(Style, mLayoutComputedValuesDom)                     \
  MACRO(Style, mLayoutComputedValuesNonDom)                  \
  MACRO(Style, mLayoutComputedValuesVisited)                 \
  MACRO(Other, mPropertyTablesSize)                          \
  MACRO(Other, mBindingsSize)

 public:
  explicit nsWindowSizes(mozilla::SizeOfState& aState)
      : FOR_EACH_SIZE(ZERO_SIZE) mDOMEventTargetsCount(0),
        mDOMEventListenersCount(0),
        mArenaSizes(),
        mStyleSizes(),
        mState(aState) {}

  void addToTabSizes(nsTabSizes* aSizes) const {
    FOR_EACH_SIZE(ADD_TO_TAB_SIZES)
    mArenaSizes.addToTabSizes(aSizes);
    mStyleSizes.addToTabSizes(aSizes);
  }

  size_t getTotalSize() const {
    size_t total = 0;

    FOR_EACH_SIZE(ADD_TO_TOTAL_SIZE)
    total += mArenaSizes.getTotalSize();
    total += mStyleSizes.getTotalSize();

    return total;
  }

  FOR_EACH_SIZE(DECL_SIZE);

  uint32_t mDOMEventTargetsCount;
  uint32_t mDOMEventListenersCount;

  nsArenaSizes mArenaSizes;

  nsStyleSizes mStyleSizes;

  mozilla::SizeOfState& mState;

#undef FOR_EACH_SIZE
};

#undef ZERO_SIZE
#undef ADD_TO_TAB_SIZES
#undef ADD_TO_TOTAL_SIZE
#undef DECL_SIZE

#endif  // nsWindowSizes_h