mirror of
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136 lines
3.6 KiB
C++
136 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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#include "nsCOMPtr.h"
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#include "nsMemory.h"
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#include "nsIObserver.h"
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#include "nsIObserverService.h"
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#include "nsIServiceManager.h"
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#include "nsXPCOMPrivate.h"
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static nsIMemory* gMemory = nsnull;
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static PRBool gHasMemoryShutdown = PR_FALSE;
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static NS_METHOD FreeGlobalMemory(void)
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{
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NS_IF_RELEASE(gMemory);
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gHasMemoryShutdown = PR_TRUE;
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return NS_OK;
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}
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#define ENSURE_ALLOCATOR \
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(gMemory ? PR_TRUE : !gHasMemoryShutdown && SetupGlobalMemory())
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static nsIMemory*
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SetupGlobalMemory()
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{
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NS_ASSERTION(!gMemory, "bad call");
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NS_GetMemoryManager(&gMemory);
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NS_ASSERTION(gMemory, "can't get memory manager!");
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NS_RegisterXPCOMExitRoutine(FreeGlobalMemory, 0);
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return gMemory;
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}
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////////////////////////////////////////////////////////////////////////////////
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// nsMemory static helper routines
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NS_EXPORT void*
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nsMemory::Alloc(PRSize size)
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{
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if (!ENSURE_ALLOCATOR)
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return nsnull;
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return gMemory->Alloc(size);
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}
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NS_EXPORT void*
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nsMemory::Realloc(void* ptr, PRSize size)
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{
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if (!ENSURE_ALLOCATOR)
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return nsnull;
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return gMemory->Realloc(ptr, size);
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}
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NS_EXPORT void
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nsMemory::Free(void* ptr)
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{
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if (!ENSURE_ALLOCATOR)
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return;
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gMemory->Free(ptr);
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}
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NS_EXPORT nsresult
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nsMemory::HeapMinimize(PRBool aImmediate)
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{
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if (!ENSURE_ALLOCATOR)
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return NS_ERROR_FAILURE;
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return gMemory->HeapMinimize(aImmediate);
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}
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NS_EXPORT void*
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nsMemory::Clone(const void* ptr, PRSize size)
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{
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if (!ENSURE_ALLOCATOR)
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return nsnull;
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void* newPtr = gMemory->Alloc(size);
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if (newPtr)
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memcpy(newPtr, ptr, size);
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return newPtr;
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}
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NS_EXPORT nsIMemory*
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nsMemory::GetGlobalMemoryService()
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{
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if (!ENSURE_ALLOCATOR)
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return nsnull;
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nsIMemory* result = gMemory;
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NS_IF_ADDREF(result);
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return result;
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}
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//----------------------------------------------------------------------
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