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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsXPCOM.h"
#include "nsMemory.h"
#include "nsXPCOMPrivate.h"
static nsIMemory* gMemory = nsnull;
static NS_METHOD FreeGlobalMemory(void)
{
NS_ASSERTION(gMemory, "must be not null after SetupGlobalMemory");
NS_IF_RELEASE(gMemory);
return NS_OK;
}
#define ENSURE_ALLOCATOR \
(gMemory ? PR_TRUE : (PRBool)(SetupGlobalMemory() != nsnull))
static nsIMemory*
SetupGlobalMemory()
{
NS_ASSERTION(!gMemory, "must be called once");
if (!gMemory)
{
NS_GetMemoryManager(&gMemory);
NS_ASSERTION(gMemory, "can't get memory manager!");
if (gMemory)
NS_RegisterXPCOMExitRoutine(FreeGlobalMemory, 0);
}
return gMemory;
}
#ifdef XPCOM_GLUE
nsresult GlueStartupMemory()
{
NS_ASSERTION(!gMemory, "must be called once");
if (!gMemory)
{
NS_GetMemoryManager(&gMemory);
NS_ASSERTION(gMemory, "can't get memory manager!");
if (!gMemory)
return NS_ERROR_FAILURE;
}
return NS_OK;
}
void GlueShutdownMemory()
{
NS_IF_RELEASE(gMemory);
}
#endif
////////////////////////////////////////////////////////////////////////////////
// nsMemory static helper routines
NS_COM void*
nsMemory::Alloc(PRSize size)
{
if (!ENSURE_ALLOCATOR)
return nsnull;
return gMemory->Alloc(size);
}
NS_COM void*
nsMemory::Realloc(void* ptr, PRSize size)
{
if (!ENSURE_ALLOCATOR)
return nsnull;
return gMemory->Realloc(ptr, size);
}
NS_COM void
nsMemory::Free(void* ptr)
{
if (!ENSURE_ALLOCATOR)
return;
gMemory->Free(ptr);
}
NS_COM nsresult
nsMemory::HeapMinimize(PRBool aImmediate)
{
if (!ENSURE_ALLOCATOR)
return NS_ERROR_FAILURE;
return gMemory->HeapMinimize(aImmediate);
}
NS_COM void*
nsMemory::Clone(const void* ptr, PRSize size)
{
if (!ENSURE_ALLOCATOR)
return nsnull;
void* newPtr = gMemory->Alloc(size);
if (newPtr)
memcpy(newPtr, ptr, size);
return newPtr;
}
NS_COM nsIMemory*
nsMemory::GetGlobalMemoryService()
{
if (!ENSURE_ALLOCATOR)
return nsnull;
nsIMemory* result = gMemory;
NS_IF_ADDREF(result);
return result;
}
//----------------------------------------------------------------------
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