зеркало из https://github.com/mozilla/pjs.git
101 строка
3.6 KiB
C++
101 строка
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
* for the specific language governing rights and limitations under the
|
|
* NPL.
|
|
*
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
#ifndef nsISizeOfHandler_h___
|
|
#define nsISizeOfHandler_h___
|
|
|
|
#include "nscore.h"
|
|
#include "nsISupports.h"
|
|
|
|
/* c028d1f0-fc9e-11d1-89e4-006008911b81 */
|
|
#define NS_ISIZEOF_HANDLER_IID \
|
|
{ 0xc028d1f0, 0xfc9e, 0x11d1, {0x89, 0xe4, 0x00, 0x60, 0x08, 0x91, 0x1b, 0x81}}
|
|
|
|
class nsIAtom;
|
|
class nsISizeOfHandler;
|
|
|
|
/**
|
|
* Function used by the Report method to report data gathered during
|
|
* a collection of data.
|
|
*/
|
|
typedef void (*nsISizeofReportFunc)(nsISizeOfHandler* aHandler,
|
|
nsIAtom* aKey,
|
|
PRUint32 aCount,
|
|
PRUint32 aTotalSize,
|
|
PRUint32 aMinSize,
|
|
PRUint32 aMaxSize,
|
|
void* aArg);
|
|
|
|
/**
|
|
* An API to managing a sizeof computation of an arbitrary graph.
|
|
* The handler is responsible for remembering which objects have been
|
|
* seen before (using RecordObject). Note that the handler doesn't
|
|
* hold references to nsISupport's objects; the assumption is that the
|
|
* objects being sized are stationary and will not be modified during
|
|
* the sizing computation and therefore do not need an extra reference
|
|
* count.
|
|
*
|
|
* Users of this API are responsible for the actual graph/tree walking.
|
|
*/
|
|
class nsISizeOfHandler : public nsISupports {
|
|
public:
|
|
NS_DEFINE_STATIC_IID_ACCESSOR(NS_ISIZEOF_HANDLER_IID)
|
|
|
|
/**
|
|
* Initialize the handler for a new collection of data. This empties
|
|
* out the object prescence table and the keyed size table.
|
|
*/
|
|
NS_IMETHOD Init() = 0;
|
|
|
|
/**
|
|
* Record the sizing status of a given object. The first time
|
|
* aObject is recorded, aResult will be PR_FALSE. Subsequent times,
|
|
* aResult will be PR_TRUE.
|
|
*/
|
|
NS_IMETHOD RecordObject(void* aObject, PRBool* aResult) = 0;
|
|
|
|
/**
|
|
* Add size information to the running size data. The atom is used
|
|
* as a key to keep type specific running totals of size
|
|
* information. This increments the total count and the total size
|
|
* as well as updates the minimum, maximum and total size for aKey's
|
|
* type.
|
|
*/
|
|
NS_IMETHOD AddSize(nsIAtom* aKey, PRUint32 aSize) = 0;
|
|
|
|
/**
|
|
* Enumerate data collected for each type and invoke the
|
|
* reporting function with the data gathered.
|
|
*/
|
|
NS_IMETHOD Report(nsISizeofReportFunc aFunc, void* aArg) = 0;
|
|
|
|
/**
|
|
* Get the current totals - the number of total objects sized (not
|
|
* necessarily anything to do with RecordObject's tracking of
|
|
* objects) and the total number of bytes that those object use. The
|
|
* counters are not reset by this call (use Init to reset
|
|
* everything).
|
|
*/
|
|
NS_IMETHOD GetTotals(PRUint32* aTotalCountResult,
|
|
PRUint32* aTotalSizeResult) = 0;
|
|
};
|
|
|
|
extern NS_COM nsresult
|
|
NS_NewSizeOfHandler(nsISizeOfHandler** aInstancePtrResult);
|
|
|
|
#endif /* nsISizeofHandler_h___ */
|