summaryrefslogtreecommitdiff
path: root/Source/JavaScriptCore/heap/SuperRegion.cpp
diff options
context:
space:
mode:
authorOswald Buddenhagen <oswald.buddenhagen@qt.io>2017-05-30 12:48:17 +0200
committerOswald Buddenhagen <oswald.buddenhagen@qt.io>2017-05-30 12:48:17 +0200
commit881da28418d380042aa95a97f0cbd42560a64f7c (patch)
treea794dff3274695e99c651902dde93d934ea7a5af /Source/JavaScriptCore/heap/SuperRegion.cpp
parent7e104c57a70fdf551bb3d22a5d637cdcbc69dbea (diff)
parent0fcedcd17cc00d3dd44c718b3cb36c1033319671 (diff)
downloadqtwebkit-881da28418d380042aa95a97f0cbd42560a64f7c.tar.gz
Merge 'wip/next' into dev
Change-Id: Iff9ee5e23bb326c4371ec8ed81d56f2f05d680e9
Diffstat (limited to 'Source/JavaScriptCore/heap/SuperRegion.cpp')
-rw-r--r--Source/JavaScriptCore/heap/SuperRegion.cpp82
1 files changed, 0 insertions, 82 deletions
diff --git a/Source/JavaScriptCore/heap/SuperRegion.cpp b/Source/JavaScriptCore/heap/SuperRegion.cpp
deleted file mode 100644
index d58f600b5..000000000
--- a/Source/JavaScriptCore/heap/SuperRegion.cpp
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
- * Copyright (C) 2013 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- * THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-#include "SuperRegion.h"
-
-#include "Region.h"
-
-namespace JSC {
-
-const uint64_t SuperRegion::s_fixedHeapMemoryPoolSize = 4 * 1024 * static_cast<uint64_t>(MB);
-
-SuperRegion::SuperRegion()
- : MetaAllocator(Region::s_regionSize, Region::s_regionSize)
- , m_reservationBase(0)
-{
-#if ENABLE(SUPER_REGION)
- // Over-allocate so that we can make sure that we're aligned to the size of Regions.
- m_reservation = PageReservation::reserve(s_fixedHeapMemoryPoolSize + Region::s_regionSize, OSAllocator::JSGCHeapPages);
- m_reservationBase = getAlignedBase(m_reservation);
- addFreshFreeSpace(m_reservationBase, s_fixedHeapMemoryPoolSize);
-#else
- UNUSED_PARAM(m_reservation);
- UNUSED_PARAM(m_reservationBase);
-#endif
-}
-
-SuperRegion::~SuperRegion()
-{
-#if ENABLE(SUPER_REGION)
- m_reservation.deallocate();
-#endif
-}
-
-void* SuperRegion::getAlignedBase(PageReservation& reservation)
-{
- for (char* current = static_cast<char*>(reservation.base()); current < static_cast<char*>(reservation.base()) + Region::s_regionSize; current += pageSize()) {
- if (!(reinterpret_cast<size_t>(current) & ~Region::s_regionMask))
- return current;
- }
- ASSERT_NOT_REACHED();
- return 0;
-}
-
-void* SuperRegion::allocateNewSpace(size_t&)
-{
- return 0;
-}
-
-void SuperRegion::notifyNeedPage(void* page)
-{
- m_reservation.commit(page, Region::s_regionSize);
-}
-
-void SuperRegion::notifyPageIsFree(void* page)
-{
- m_reservation.decommit(page, Region::s_regionSize);
-}
-
-} // namespace JSC