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106 lines
2.9 KiB
C++
106 lines
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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////////////////////////////////////////////////////////////////////////////////
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// Implementation of nsIMalloc using NSPR
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////////////////////////////////////////////////////////////////////////////////
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#ifndef nsMalloc_h__
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#define nsMalloc_h__
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#include "nsIMalloc.h"
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#include "prmem.h"
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#include "nsAgg.h"
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class nsMalloc : public nsIMalloc {
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public:
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/**
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* Allocates a block of memory of a particular size.
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*
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* @param size - the size of the block to allocate
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* @result the block of memory
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*/
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NS_IMETHOD_(void*)
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Alloc(PRUint32 size);
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/**
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* Reallocates a block of memory to a new size.
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*
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* @param ptr - the block of memory to reallocate
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* @param size - the new size
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* @result the rellocated block of memory
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*/
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NS_IMETHOD_(void*)
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Realloc(void* ptr, PRUint32 size);
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/**
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* Frees a block of memory.
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*
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* @param ptr - the block of memory to free
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*/
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NS_IMETHOD_(void)
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Free(void* ptr);
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/**
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* Returns the size of a block of memory. Returns -1
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* if the size is not available.
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*
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* @param ptr - the block of memory
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* @result the size or -1 if not available
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*/
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NS_IMETHOD_(PRInt32)
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GetSize(void* ptr);
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/**
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* Returns whether the block of memory was allocated by this
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* memory allocator. Returns PR_FALSE if this information is
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* not available.
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*
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* @param ptr - the block of memory
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* @result true if allocated by this nsIMalloc, false if not or
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* if it can't be determined
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*/
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NS_IMETHOD_(PRBool)
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DidAlloc(void* ptr);
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/**
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* Attempts to shrink the heap.
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*/
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NS_IMETHOD_(void)
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HeapMinimize(void);
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////////////////////////////////////////////////////////////////////////////
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nsMalloc(nsISupports* outer);
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virtual ~nsMalloc(void);
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NS_DECL_AGGREGATED
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static NS_METHOD
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Create(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr);
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};
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////////////////////////////////////////////////////////////////////////////////
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#endif // nsMalloc_h__
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