1/*
2 * Copyright (C) 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#pragma once
27
28namespace JSC {
29
30ALWAYS_INLINE void* IsoSubspace::allocateNonVirtual(VM& vm, size_t size, GCDeferralContext* deferralContext, AllocationFailureMode failureMode)
31{
32 RELEASE_ASSERT(WTF::roundUpToMultipleOf<MarkedBlock::atomSize>(size) == cellSize());
33 Allocator allocator = allocatorForNonVirtual(size, AllocatorForMode::MustAlreadyHaveAllocator);
34 void* result = allocator.allocate(vm.heap, deferralContext, failureMode);
35 return result;
36}
37
38inline void IsoSubspace::clearIsoCellSetBit(PreciseAllocation* preciseAllocation)
39{
40 unsigned lowerTierIndex = preciseAllocation->lowerTierIndex();
41 m_cellSets.forEach(
42 [&](IsoCellSet* set) {
43 set->clearLowerTierCell(lowerTierIndex);
44 });
45}
46
47inline void IsoSubspace::sweep()
48{
49 Subspace::sweepBlocks();
50 // We sweep precise-allocations eagerly, but we do not free it immediately.
51 // This part should be done by MarkedSpace::sweepPreciseAllocations.
52 m_preciseAllocations.forEach([&](PreciseAllocation* allocation) {
53 allocation->sweep();
54 });
55}
56
57} // namespace JSC
58
59