/* -*- 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
////////////////////////////////////////////////////////////////////////////////

#include "nsMalloc.h"

static NS_DEFINE_IID(kIMallocIID, NS_IMALLOC_IID);

nsMalloc::nsMalloc(nsISupports* outer)
{
    NS_INIT_AGGREGATED(outer);
}

nsMalloc::~nsMalloc(void)
{
}

NS_IMPL_AGGREGATED(nsMalloc);

NS_METHOD
nsMalloc::AggregatedQueryInterface(const nsIID& aIID, void** aInstancePtr) 
{
    if (NULL == aInstancePtr) {                                            
        return NS_ERROR_NULL_POINTER;                                        
    }
	 if (aIID.Equals(NS_GET_IID(nsISupports)))
	     *aInstancePtr = GetInner();                                                                      
    else if (aIID.Equals(kIMallocIID))
        *aInstancePtr = NS_STATIC_CAST(nsIMalloc*, this);
	 else {
	     *aInstancePtr = nsnull;
		  return NS_NOINTERFACE;
	 }

	 NS_ADDREF((nsISupports*)*aInstancePtr);
	 return NS_OK; 
}

NS_METHOD
nsMalloc::Create(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr)
{
    if (!aInstancePtr)
	     return NS_ERROR_INVALID_POINTER;
    if (outer && !aIID.Equals(NS_GET_IID(nsISupports)))
        return NS_ERROR_INVALID_ARG;
    nsMalloc* mm = new nsMalloc(outer);
    if (mm == NULL)
        return NS_ERROR_OUT_OF_MEMORY;

	 nsresult rv = mm->AggregatedQueryInterface(aIID, aInstancePtr);
	 if (NS_FAILED(rv)) {
	     delete mm;
		  return rv;
	 }
    return rv;
}

////////////////////////////////////////////////////////////////////////////////

NS_METHOD_(void*)
nsMalloc::Alloc(PRUint32 size)
{
    return PR_Malloc(size);
}

NS_METHOD_(void*)
nsMalloc::Realloc(void* ptr, PRUint32 size)
{
    return PR_Realloc(ptr, size);
}

NS_METHOD_(void)
nsMalloc::Free(void* ptr)
{
    PR_Free(ptr);
}

NS_METHOD_(PRInt32)
nsMalloc::GetSize(void* ptr)
{
    return -1;
}

NS_METHOD_(PRBool)
nsMalloc::DidAlloc(void* ptr)
{
    return PR_TRUE;
}

NS_METHOD_(void)
nsMalloc::HeapMinimize(void)
{
#ifdef XP_MAC
    // obsolete
#endif
}

////////////////////////////////////////////////////////////////////////////////