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/* -*- 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 nsIMalloc using NSPR
////////////////////////////////////////////////////////////////////////////////
#ifndef nsMalloc_h__
#define nsMalloc_h__
#include "nsIMalloc.h"
#include "prmem.h"
#include "nsAgg.h"
class nsMalloc : nsIMalloc {
public:
/**
* 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_(void)
Free(void* ptr);
/**
* Returns the size of a block of memory. Returns -1
* if the size is not available.
*
* @param ptr - the block of memory
* @result the size or -1 if not available
*/
NS_IMETHOD_(PRInt32)
GetSize(void* ptr);
/**
* Returns whether the block of memory was allocated by this
* memory allocator. Returns PR_FALSE if this information is
* not available.
*
* @param ptr - the block of memory
* @result true if allocated by this nsIMalloc, false if not or
* if it can't be determined
*/
NS_IMETHOD_(PRBool)
DidAlloc(void* ptr);
/**
* Attempts to shrink the heap.
*/
NS_IMETHOD_(void)
HeapMinimize(void);
////////////////////////////////////////////////////////////////////////////
nsMalloc(nsISupports* outer);
virtual ~nsMalloc(void);
NS_DECL_AGGREGATED
static NS_METHOD
Create(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr);
};
////////////////////////////////////////////////////////////////////////////////
#endif // nsMalloc_h__
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