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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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layout/base/nsArenaMemoryStats.h Normal file
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/* -*- 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 nsArenaMemoryStats_h
#define nsArenaMemoryStats_h
#include "mozilla/Assertions.h"
#include "mozilla/PodOperations.h"
class nsTabSizes {
public:
enum Kind {
DOM, // DOM stuff.
Style, // Style stuff.
Other // Everything else.
};
nsTabSizes() { mozilla::PodZero(this); }
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 FRAME_ID_STAT_FIELD(classname) mArena##classname
struct nsArenaMemoryStats {
#define FOR_EACH_SIZE(macro) \
macro(Other, mLineBoxes) \
macro(Style, mRuleNodes) \
macro(Style, mStyleContexts) \
macro(Style, mStyleStructs) \
macro(Other, mOther)
nsArenaMemoryStats()
:
#define ZERO_SIZE(kind, mSize) mSize(0),
FOR_EACH_SIZE(ZERO_SIZE)
#undef ZERO_SIZE
#define FRAME_ID(classname) FRAME_ID_STAT_FIELD(classname)(),
#include "nsFrameIdList.h"
#undef FRAME_ID
dummy()
{}
void addToTabSizes(nsTabSizes *sizes) const
{
#define ADD_TO_TAB_SIZES(kind, mSize) sizes->add(nsTabSizes::kind, mSize);
FOR_EACH_SIZE(ADD_TO_TAB_SIZES)
#undef ADD_TO_TAB_SIZES
#define FRAME_ID(classname) \
sizes->add(nsTabSizes::Other, FRAME_ID_STAT_FIELD(classname));
#include "nsFrameIdList.h"
#undef FRAME_ID
}
size_t getTotalSize() const
{
size_t total = 0;
#define ADD_TO_TOTAL_SIZE(kind, mSize) total += mSize;
FOR_EACH_SIZE(ADD_TO_TOTAL_SIZE)
#undef ADD_TO_TOTAL_SIZE
#define FRAME_ID(classname) \
total += FRAME_ID_STAT_FIELD(classname);
#include "nsFrameIdList.h"
#undef FRAME_ID
return total;
}
#define DECL_SIZE(kind, mSize) size_t mSize;
FOR_EACH_SIZE(DECL_SIZE)
#undef DECL_SIZE
#define FRAME_ID(classname) size_t FRAME_ID_STAT_FIELD(classname);
#include "nsFrameIdList.h"
#undef FRAME_ID
int dummy; // present just to absorb the trailing comma from FRAME_ID in the
// constructor
#undef FOR_EACH_SIZE
};
#endif // nsArenaMemoryStats_h