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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
*/
#include "storbase.hxx"
#include <sal/types.h>
#include <rtl/alloc.h>
#include <rtl/ref.hxx>
#include <osl/diagnose.h>
#include <store/types.h>
#include "object.hxx"
#include <stdio.h>
using namespace store;
/*========================================================================
*
* PageData::Allocator_Impl (default allocator).
*
*======================================================================*/
namespace store
{
class PageData::Allocator_Impl :
public store::OStoreObject,
public store::PageData::Allocator
{
public:
/** Construction (two phase).
*/
Allocator_Impl();
Allocator_Impl(const Allocator_Impl&) = delete;
Allocator_Impl& operator=(const Allocator_Impl&) = delete;
storeError initialize (sal_uInt16 nPageSize);
protected:
/** Destruction.
*/
virtual ~Allocator_Impl() override;
private:
/** Representation.
*/
rtl_cache_type * m_page_cache;
sal_uInt16 m_page_size;
/** PageData::Allocator implementation.
*/
virtual void allocate_Impl (void ** ppPage, sal_uInt16 * pnSize) override;
virtual void deallocate_Impl (void * pPage) override;
};
} // namespace store
PageData::Allocator_Impl::Allocator_Impl()
: m_page_cache(nullptr), m_page_size(0)
{}
storeError
PageData::Allocator_Impl::initialize (sal_uInt16 nPageSize)
{
char name[RTL_CACHE_NAME_LENGTH + 1];
std::size_t size = sal::static_int_cast<std::size_t>(nPageSize);
(void) snprintf (name, sizeof(name), "store_page_alloc_%" SAL_PRI_SIZET "u", size);
m_page_cache = rtl_cache_create (name, size, 0, nullptr, nullptr, nullptr, nullptr, nullptr, 0);
if (!m_page_cache)
return store_E_OutOfMemory;
m_page_size = nPageSize;
return store_E_None;
}
PageData::Allocator_Impl::~Allocator_Impl()
{
rtl_cache_destroy(m_page_cache);
m_page_cache = nullptr;
}
void PageData::Allocator_Impl::allocate_Impl (void ** ppPage, sal_uInt16 * pnSize)
{
OSL_PRECOND((ppPage != nullptr) && (pnSize != nullptr), "contract violation");
if ((ppPage != nullptr) && (pnSize != nullptr))
{
*ppPage = rtl_cache_alloc(m_page_cache);
*pnSize = m_page_size;
}
}
void PageData::Allocator_Impl::deallocate_Impl (void * pPage)
{
OSL_PRECOND(pPage != nullptr, "contract violation");
rtl_cache_free(m_page_cache, pPage);
}
/*========================================================================
*
* PageData::Allocator factory.
*
*======================================================================*/
storeError
PageData::Allocator::createInstance (rtl::Reference< PageData::Allocator > & rxAllocator, sal_uInt16 nPageSize)
{
rtl::Reference< PageData::Allocator_Impl > xAllocator (new PageData::Allocator_Impl());
if (!xAllocator.is())
return store_E_OutOfMemory;
rxAllocator = &*xAllocator;
return xAllocator->initialize (nPageSize);
}
/*========================================================================
*
* OStorePageObject.
*
*======================================================================*/
/*
* ~OStorePageObject.
*/
OStorePageObject::~OStorePageObject()
{
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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