1/*
2 * Copyright (C) 2017-2018 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "IsoSubspace.h"
28
29#include "AllocatorInlines.h"
30#include "BlockDirectoryInlines.h"
31#include "IsoAlignedMemoryAllocator.h"
32#include "IsoSubspaceInlines.h"
33#include "LocalAllocatorInlines.h"
34
35namespace JSC {
36
37IsoSubspace::IsoSubspace(CString name, Heap& heap, HeapCellType* heapCellType, size_t size)
38 : Subspace(name, heap)
39 , m_size(size)
40 , m_directory(&heap, WTF::roundUpToMultipleOf<MarkedBlock::atomSize>(size))
41 , m_localAllocator(&m_directory)
42 , m_isoAlignedMemoryAllocator(std::make_unique<IsoAlignedMemoryAllocator>())
43{
44 initialize(heapCellType, m_isoAlignedMemoryAllocator.get());
45
46 auto locker = holdLock(m_space.directoryLock());
47 m_directory.setSubspace(this);
48 m_space.addBlockDirectory(locker, &m_directory);
49 m_alignedMemoryAllocator->registerDirectory(&m_directory);
50 m_firstDirectory = &m_directory;
51}
52
53IsoSubspace::~IsoSubspace()
54{
55}
56
57Allocator IsoSubspace::allocatorFor(size_t size, AllocatorForMode mode)
58{
59 return allocatorForNonVirtual(size, mode);
60}
61
62void* IsoSubspace::allocate(VM& vm, size_t size, GCDeferralContext* deferralContext, AllocationFailureMode failureMode)
63{
64 return allocateNonVirtual(vm, size, deferralContext, failureMode);
65}
66
67void IsoSubspace::didResizeBits(size_t blockIndex)
68{
69 m_cellSets.forEach(
70 [&] (IsoCellSet* set) {
71 set->didResizeBits(blockIndex);
72 });
73}
74
75void IsoSubspace::didRemoveBlock(size_t blockIndex)
76{
77 m_cellSets.forEach(
78 [&] (IsoCellSet* set) {
79 set->didRemoveBlock(blockIndex);
80 });
81}
82
83void IsoSubspace::didBeginSweepingToFreeList(MarkedBlock::Handle* block)
84{
85 m_cellSets.forEach(
86 [&] (IsoCellSet* set) {
87 set->sweepToFreeList(block);
88 });
89}
90
91} // namespace JSC
92
93