mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 14:45:29 +00:00
103 lines
2.5 KiB
C++
103 lines
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape 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/NPL/
|
|
*
|
|
* 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 Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All
|
|
* Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Pierre Phaneuf <pp@ludusdesign.com>
|
|
*/
|
|
|
|
#include "nsArena.h"
|
|
#include "nsCRT.h"
|
|
|
|
ArenaImpl::ArenaImpl(void)
|
|
: mInitialized(PR_FALSE)
|
|
{
|
|
NS_INIT_REFCNT();
|
|
nsCRT::memset(&mPool, 0, sizeof(PLArenaPool));
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
ArenaImpl::Init(PRUint32 aBlockSize)
|
|
{
|
|
if (aBlockSize < NS_MIN_ARENA_BLOCK_SIZE) {
|
|
aBlockSize = NS_DEFAULT_ARENA_BLOCK_SIZE;
|
|
}
|
|
PL_INIT_ARENA_POOL(&mPool, "nsIArena", aBlockSize);
|
|
mBlockSize = aBlockSize;
|
|
mInitialized = PR_TRUE;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS1(ArenaImpl, nsIArena)
|
|
|
|
ArenaImpl::~ArenaImpl()
|
|
{
|
|
if (mInitialized)
|
|
PL_FinishArenaPool(&mPool);
|
|
|
|
mInitialized = PR_FALSE;
|
|
}
|
|
|
|
NS_IMETHODIMP_(void*)
|
|
ArenaImpl::Alloc(PRUint32 size)
|
|
{
|
|
// Adjust size so that it's a multiple of sizeof(double)
|
|
PRUint32 align = size & (sizeof(double) - 1);
|
|
if (0 != align) {
|
|
size += sizeof(double) - align;
|
|
}
|
|
|
|
void* p;
|
|
PL_ARENA_ALLOCATE(p, &mPool, size);
|
|
return p;
|
|
}
|
|
|
|
NS_METHOD
|
|
ArenaImpl::Create(nsISupports *aOuter, REFNSIID aIID, void **aResult)
|
|
{
|
|
if (aOuter)
|
|
return NS_ERROR_NO_AGGREGATION;
|
|
|
|
ArenaImpl* it = new ArenaImpl();
|
|
if (nsnull == it)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
NS_ADDREF(it);
|
|
nsresult rv = it->QueryInterface(aIID, aResult);
|
|
NS_RELEASE(it);
|
|
return rv;
|
|
}
|
|
|
|
NS_COM nsresult NS_NewHeapArena(nsIArena** aInstancePtrResult,
|
|
PRUint32 aArenaBlockSize)
|
|
{
|
|
nsresult rv;
|
|
nsIArena* arena;
|
|
rv = ArenaImpl::Create(NULL, NS_GET_IID(nsIArena), (void**)&arena);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
rv = arena->Init(aArenaBlockSize);
|
|
if (NS_FAILED(rv)) {
|
|
NS_RELEASE(arena);
|
|
return rv;
|
|
}
|
|
|
|
*aInstancePtrResult = arena;
|
|
return rv;
|
|
}
|