gecko-dev/xpcom/base/nsAllocator.h

93 строки
2.7 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* 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.
*/
////////////////////////////////////////////////////////////////////////////////
// Implementation of nsIAllocator using NSPR
////////////////////////////////////////////////////////////////////////////////
#ifndef nsAllocator_h__
#define nsAllocator_h__
#include "nsIAllocator.h"
#include "prmem.h"
#include "nsAgg.h"
#include "nsIFactory.h"
class nsAllocatorImpl : public nsIAllocator {
public:
static const nsCID& CID() { static nsCID cid = NS_ALLOCATOR_CID; return cid; }
/**
* Allocates a block of memory of a particular size.
*
* @param size - the size of the block to allocate
* @result the block of memory
*/
NS_IMETHOD_(void*) Alloc(PRUint32 size);
/**
* Reallocates a block of memory to a new size.
*
* @param ptr - the block of memory to reallocate
* @param size - the new size
* @result the rellocated block of memory
*/
NS_IMETHOD_(void*) Realloc(void* ptr, PRUint32 size);
/**
* Frees a block of memory.
*
* @param ptr - the block of memory to free
*/
NS_IMETHOD Free(void* ptr);
/**
* Attempts to shrink the heap.
*/
NS_IMETHOD HeapMinimize(void);
////////////////////////////////////////////////////////////////////////////
nsAllocatorImpl(nsISupports* outer);
virtual ~nsAllocatorImpl(void);
NS_DECL_AGGREGATED
static NS_METHOD
Create(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr);
};
////////////////////////////////////////////////////////////////////////////////
#if 0
class nsAllocatorFactory : public nsIFactory {
public:
NS_IMETHOD CreateInstance(nsISupports *aOuter,
REFNSIID aIID,
void **aResult);
NS_IMETHOD LockFactory(PRBool aLock);
nsAllocatorFactory(void);
virtual ~nsAllocatorFactory(void);
NS_DECL_ISUPPORTS
};
#endif
////////////////////////////////////////////////////////////////////////////////
#endif // nsAllocator_h__