/*
* Copyright ( c ) 2015 , 2019 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*/
#include "precompiled.hpp"
#include "gc/z/zGlobals.hpp"
#include "gc/z/zGranuleMap.inline.hpp"
#include "gc/z/zPage.inline.hpp"
#include "gc/z/zPageTable.inline.hpp"
#include "runtime/orderAccess.hpp"
#include "utilities/debug.hpp"
ZPageTable::ZPageTable() :
_map(ZAddressOffsetMax) {}
void ZPageTable::insert(ZPage* page) {
const uintptr_t offset = page->start();
const size_t size = page->size();
// Make sure a newly created page is
// visible before updating the page table.
OrderAccess::storestore();
assert(_map.get(offset) == NULL, "Invalid entry" );
_map.put(offset, size, page);
}
void ZPageTable::remove(ZPage* page) {
const uintptr_t offset = page->start();
const size_t size = page->size();
assert(_map.get(offset) == page, "Invalid entry" );
_map.put(offset, size, NULL);
}
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