114 lines
3.6 KiB
C++
114 lines
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* 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
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsIMalloc_h___
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#define nsIMalloc_h___
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#include "nsISupports.h"
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class nsIMalloc : public nsISupports {
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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) = 0;
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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) = 0;
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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) = 0;
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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) = 0;
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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) = 0;
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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) = 0;
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};
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#define NS_IMALLOC_IID \
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{ /* c4744e60-1875-11d2-815f-006008119d7a */ \
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0xc4744e60, \
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0x1875, \
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0x11d2, \
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{0x81, 0x5f, 0x00, 0x60, 0x08, 0x11, 0x9d, 0x7a} \
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}
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////////////////////////////////////////////////////////////////////////////////
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#endif /* nsIMalloc_h___ */
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