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axmol/scripting/javascript/spidermonkey-android/include/js/MemoryMetrics.h

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=8 sw=4 et tw=99 ft=cpp:
*
* 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 js_MemoryMetrics_h
#define js_MemoryMetrics_h
// These declarations are not within jsapi.h because they are highly likely to
// change in the future. Depend on them at your own risk.
#include <string.h>
#include "jsalloc.h"
#include "jspubtd.h"
#include "js/Utility.h"
#include "js/Vector.h"
class nsISupports; // This is needed for ObjectPrivateVisitor.
namespace js {
// In memory reporting, we have concept of "sundries", line items which are too
// small to be worth reporting individually. Under some circumstances, a memory
// reporter gets tossed into the sundries bucket if it's smaller than
// MemoryReportingSundriesThreshold() bytes.
//
// We need to define this value here, rather than in the code which actually
// generates the memory reports, because HugeStringInfo uses this value.
JS_FRIEND_API(size_t) MemoryReportingSundriesThreshold();
} // namespace js
namespace JS {
// Data for tracking memory usage of things hanging off objects.
struct ObjectsExtraSizes {
size_t slots;
size_t elements;
size_t argumentsData;
size_t regExpStatics;
size_t propertyIteratorData;
size_t ctypesData;
size_t private_; // The '_' suffix is required because |private| is a keyword.
// Note that this field is measured separately from the others.
ObjectsExtraSizes() { memset(this, 0, sizeof(ObjectsExtraSizes)); }
void add(ObjectsExtraSizes &sizes) {
this->slots += sizes.slots;
this->elements += sizes.elements;
this->argumentsData += sizes.argumentsData;
this->regExpStatics += sizes.regExpStatics;
this->propertyIteratorData += sizes.propertyIteratorData;
this->ctypesData += sizes.ctypesData;
this->private_ += sizes.private_;
}
};
// Data for tracking analysis/inference memory usage.
struct TypeInferenceSizes
{
size_t typeScripts;
size_t typeResults;
size_t analysisPool;
size_t typePool;
size_t pendingArrays;
size_t allocationSiteTables;
size_t arrayTypeTables;
size_t objectTypeTables;
size_t typeObjects;
TypeInferenceSizes() { memset(this, 0, sizeof(TypeInferenceSizes)); }
void add(TypeInferenceSizes &sizes) {
this->typeScripts += sizes.typeScripts;
this->typeResults += sizes.typeResults;
this->analysisPool += sizes.analysisPool;
this->typePool += sizes.typePool;
this->pendingArrays += sizes.pendingArrays;
this->allocationSiteTables += sizes.allocationSiteTables;
this->arrayTypeTables += sizes.arrayTypeTables;
this->objectTypeTables += sizes.objectTypeTables;
this->typeObjects += sizes.typeObjects;
}
};
// Holds data about a huge string (one which uses more HugeStringInfo::MinSize
// bytes of memory), so we can report it individually.
struct HugeStringInfo
{
HugeStringInfo()
: length(0)
, size(0)
{
memset(&buffer, 0, sizeof(buffer));
}
// A string needs to take up this many bytes of storage before we consider
// it to be "huge".
static size_t MinSize()
{
return js::MemoryReportingSundriesThreshold();
}
// A string's size in memory is not necessarily equal to twice its length
// because the allocator and the JS engine both may round up.
size_t length;
size_t size;
// We record the first 32 chars of the escaped string here. (We escape the
// string so we can use a char[] instead of a jschar[] here.
char buffer[32];
};
// These measurements relate directly to the JSRuntime, and not to
// compartments within it.
struct RuntimeSizes
{
RuntimeSizes()
: object(0)
, atomsTable(0)
, contexts(0)
, dtoa(0)
, temporary(0)
, jaegerCode(0)
, ionCode(0)
, regexpCode(0)
, unusedCode(0)
, stack(0)
, gcMarker(0)
, mathCache(0)
, scriptFilenames(0)
, scriptSources(0)
{}
size_t object;
size_t atomsTable;
size_t contexts;
size_t dtoa;
size_t temporary;
size_t jaegerCode;
size_t ionCode;
size_t regexpCode;
size_t unusedCode;
size_t stack;
size_t gcMarker;
size_t mathCache;
size_t scriptFilenames;
size_t scriptSources;
};
struct CompartmentStats
{
CompartmentStats()
: extra1(0)
, extra2(0)
, gcHeapArenaAdmin(0)
, gcHeapUnusedGcThings(0)
, gcHeapObjectsOrdinary(0)
, gcHeapObjectsFunction(0)
, gcHeapObjectsDenseArray(0)
, gcHeapObjectsSlowArray(0)
, gcHeapObjectsCrossCompartmentWrapper(0)
, gcHeapStringsNormal(0)
, gcHeapStringsShort(0)
, gcHeapShapesTreeGlobalParented(0)
, gcHeapShapesTreeNonGlobalParented(0)
, gcHeapShapesDict(0)
, gcHeapShapesBase(0)
, gcHeapScripts(0)
, gcHeapTypeObjects(0)
, gcHeapIonCodes(0)
#if JS_HAS_XML_SUPPORT
, gcHeapXML(0)
#endif
, objectsExtra()
, stringCharsNonHuge(0)
, shapesExtraTreeTables(0)
, shapesExtraDictTables(0)
, shapesExtraTreeShapeKids(0)
, shapesCompartmentTables(0)
, scriptData(0)
, jaegerData(0)
, ionData(0)
, compartmentObject(0)
, crossCompartmentWrappersTable(0)
, regexpCompartment(0)
, debuggeesSet(0)
, typeInference()
, hugeStrings()
{}
CompartmentStats(const CompartmentStats &other)
: extra1(other.extra1)
, extra2(other.extra2)
, gcHeapArenaAdmin(other.gcHeapArenaAdmin)
, gcHeapUnusedGcThings(other.gcHeapUnusedGcThings)
, gcHeapObjectsOrdinary(other.gcHeapObjectsOrdinary)
, gcHeapObjectsFunction(other.gcHeapObjectsFunction)
, gcHeapObjectsDenseArray(other.gcHeapObjectsDenseArray)
, gcHeapObjectsSlowArray(other.gcHeapObjectsSlowArray)
, gcHeapObjectsCrossCompartmentWrapper(other.gcHeapObjectsCrossCompartmentWrapper)
, gcHeapStringsNormal(other.gcHeapStringsNormal)
, gcHeapStringsShort(other.gcHeapStringsShort)
, gcHeapShapesTreeGlobalParented(other.gcHeapShapesTreeGlobalParented)
, gcHeapShapesTreeNonGlobalParented(other.gcHeapShapesTreeNonGlobalParented)
, gcHeapShapesDict(other.gcHeapShapesDict)
, gcHeapShapesBase(other.gcHeapShapesBase)
, gcHeapScripts(other.gcHeapScripts)
, gcHeapTypeObjects(other.gcHeapTypeObjects)
, gcHeapIonCodes(other.gcHeapIonCodes)
#if JS_HAS_XML_SUPPORT
, gcHeapXML(other.gcHeapXML)
#endif
, objectsExtra(other.objectsExtra)
, stringCharsNonHuge(other.stringCharsNonHuge)
, shapesExtraTreeTables(other.shapesExtraTreeTables)
, shapesExtraDictTables(other.shapesExtraDictTables)
, shapesExtraTreeShapeKids(other.shapesExtraTreeShapeKids)
, shapesCompartmentTables(other.shapesCompartmentTables)
, scriptData(other.scriptData)
, jaegerData(other.jaegerData)
, ionData(other.ionData)
, compartmentObject(other.compartmentObject)
, crossCompartmentWrappersTable(other.crossCompartmentWrappersTable)
, regexpCompartment(other.regexpCompartment)
, debuggeesSet(other.debuggeesSet)
, typeInference(other.typeInference)
{
hugeStrings.append(other.hugeStrings);
}
// These fields can be used by embedders.
void *extra1;
void *extra2;
// If you add a new number, remember to update the constructors, add(), and
// maybe gcHeapThingsSize()!
size_t gcHeapArenaAdmin;
size_t gcHeapUnusedGcThings;
size_t gcHeapObjectsOrdinary;
size_t gcHeapObjectsFunction;
size_t gcHeapObjectsDenseArray;
size_t gcHeapObjectsSlowArray;
size_t gcHeapObjectsCrossCompartmentWrapper;
size_t gcHeapStringsNormal;
size_t gcHeapStringsShort;
size_t gcHeapShapesTreeGlobalParented;
size_t gcHeapShapesTreeNonGlobalParented;
size_t gcHeapShapesDict;
size_t gcHeapShapesBase;
size_t gcHeapScripts;
size_t gcHeapTypeObjects;
size_t gcHeapIonCodes;
#if JS_HAS_XML_SUPPORT
size_t gcHeapXML;
#endif
ObjectsExtraSizes objectsExtra;
size_t stringCharsNonHuge;
size_t shapesExtraTreeTables;
size_t shapesExtraDictTables;
size_t shapesExtraTreeShapeKids;
size_t shapesCompartmentTables;
size_t scriptData;
size_t jaegerData;
size_t ionData;
size_t compartmentObject;
size_t crossCompartmentWrappersTable;
size_t regexpCompartment;
size_t debuggeesSet;
TypeInferenceSizes typeInference;
js::Vector<HugeStringInfo, 0, js::SystemAllocPolicy> hugeStrings;
// Add cStats's numbers to this object's numbers.
void add(CompartmentStats &cStats)
{
#define ADD(x) this->x += cStats.x
ADD(gcHeapArenaAdmin);
ADD(gcHeapUnusedGcThings);
ADD(gcHeapObjectsOrdinary);
ADD(gcHeapObjectsFunction);
ADD(gcHeapObjectsDenseArray);
ADD(gcHeapObjectsSlowArray);
ADD(gcHeapObjectsCrossCompartmentWrapper);
ADD(gcHeapStringsNormal);
ADD(gcHeapStringsShort);
ADD(gcHeapShapesTreeGlobalParented);
ADD(gcHeapShapesTreeNonGlobalParented);
ADD(gcHeapShapesDict);
ADD(gcHeapShapesBase);
ADD(gcHeapScripts);
ADD(gcHeapTypeObjects);
ADD(gcHeapIonCodes);
#if JS_HAS_XML_SUPPORT
ADD(gcHeapXML);
#endif
objectsExtra.add(cStats.objectsExtra);
ADD(stringCharsNonHuge);
ADD(shapesExtraTreeTables);
ADD(shapesExtraDictTables);
ADD(shapesExtraTreeShapeKids);
ADD(shapesCompartmentTables);
ADD(scriptData);
ADD(jaegerData);
ADD(ionData);
ADD(compartmentObject);
ADD(crossCompartmentWrappersTable);
ADD(regexpCompartment);
ADD(debuggeesSet);
#undef ADD
typeInference.add(cStats.typeInference);
hugeStrings.append(cStats.hugeStrings);
}
// The size of all the live things in the GC heap.
size_t gcHeapThingsSize();
};
struct RuntimeStats
{
RuntimeStats(JSMallocSizeOfFun mallocSizeOf)
: runtime()
, gcHeapChunkTotal(0)
, gcHeapDecommittedArenas(0)
, gcHeapUnusedChunks(0)
, gcHeapUnusedArenas(0)
, gcHeapUnusedGcThings(0)
, gcHeapChunkAdmin(0)
, gcHeapGcThings(0)
, totals()
, compartmentStatsVector()
, currCompartmentStats(NULL)
, mallocSizeOf(mallocSizeOf)
{}
RuntimeSizes runtime;
// If you add a new number, remember to update the constructor!
// Here's a useful breakdown of the GC heap.
//
// - rtStats.gcHeapChunkTotal
// - decommitted bytes
// - rtStats.gcHeapDecommittedArenas (decommitted arenas in non-empty chunks)
// - unused bytes
// - rtStats.gcHeapUnusedChunks (empty chunks)
// - rtStats.gcHeapUnusedArenas (empty arenas within non-empty chunks)
// - rtStats.total.gcHeapUnusedGcThings (empty GC thing slots within non-empty arenas)
// - used bytes
// - rtStats.gcHeapChunkAdmin
// - rtStats.total.gcHeapArenaAdmin
// - rtStats.gcHeapGcThings (in-use GC things)
//
// It's possible that some arenas in empty chunks may be decommitted, but
// we don't count those under rtStats.gcHeapDecommittedArenas because (a)
// it's rare, and (b) this means that rtStats.gcHeapUnusedChunks is a
// multiple of the chunk size, which is good.
size_t gcHeapChunkTotal;
size_t gcHeapDecommittedArenas;
size_t gcHeapUnusedChunks;
size_t gcHeapUnusedArenas;
size_t gcHeapUnusedGcThings;
size_t gcHeapChunkAdmin;
size_t gcHeapGcThings;
// The sum of all compartment's measurements.
CompartmentStats totals;
js::Vector<CompartmentStats, 0, js::SystemAllocPolicy> compartmentStatsVector;
CompartmentStats *currCompartmentStats;
JSMallocSizeOfFun mallocSizeOf;
virtual void initExtraCompartmentStats(JSCompartment *c, CompartmentStats *cstats) = 0;
};
#ifdef JS_THREADSAFE
class ObjectPrivateVisitor
{
public:
// Within CollectRuntimeStats, this method is called for each JS object
// that has an nsISupports pointer.
virtual size_t sizeOfIncludingThis(nsISupports *aSupports) = 0;
// A callback that gets a JSObject's nsISupports pointer, if it has one.
// Note: this function does *not* addref |iface|.
typedef JSBool(*GetISupportsFun)(JSObject *obj, nsISupports **iface);
GetISupportsFun getISupports;
ObjectPrivateVisitor(GetISupportsFun getISupports)
: getISupports(getISupports)
{}
};
extern JS_PUBLIC_API(bool)
CollectRuntimeStats(JSRuntime *rt, RuntimeStats *rtStats, ObjectPrivateVisitor *opv);
extern JS_PUBLIC_API(int64_t)
GetExplicitNonHeapForRuntime(JSRuntime *rt, JSMallocSizeOfFun mallocSizeOf);
#endif // JS_THREADSAFE
extern JS_PUBLIC_API(size_t)
SystemCompartmentCount(const JSRuntime *rt);
extern JS_PUBLIC_API(size_t)
UserCompartmentCount(const JSRuntime *rt);
} // namespace JS
#endif // js_MemoryMetrics_h
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