1/*
2 * Copyright (C) 2015-2017 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 "FunctionRareData.h"
28
29#include "JSCInlines.h"
30#include "ObjectAllocationProfileInlines.h"
31
32namespace JSC {
33
34const ClassInfo FunctionRareData::s_info = { "FunctionRareData", nullptr, nullptr, nullptr, CREATE_METHOD_TABLE(FunctionRareData) };
35
36FunctionRareData* FunctionRareData::create(VM& vm)
37{
38 FunctionRareData* rareData = new (NotNull, allocateCell<FunctionRareData>(vm.heap)) FunctionRareData(vm);
39 rareData->finishCreation(vm);
40 return rareData;
41}
42
43void FunctionRareData::destroy(JSCell* cell)
44{
45 FunctionRareData* rareData = static_cast<FunctionRareData*>(cell);
46 rareData->FunctionRareData::~FunctionRareData();
47}
48
49Structure* FunctionRareData::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
50{
51 return Structure::create(vm, globalObject, prototype, TypeInfo(CellType, StructureFlags), info());
52}
53
54void FunctionRareData::visitChildren(JSCell* cell, SlotVisitor& visitor)
55{
56 FunctionRareData* rareData = jsCast<FunctionRareData*>(cell);
57 Base::visitChildren(cell, visitor);
58
59 rareData->m_objectAllocationProfile.visitAggregate(visitor);
60 rareData->m_internalFunctionAllocationProfile.visitAggregate(visitor);
61 visitor.append(rareData->m_boundFunctionStructure);
62}
63
64FunctionRareData::FunctionRareData(VM& vm)
65 : Base(vm, vm.functionRareDataStructure.get())
66 , m_objectAllocationProfile()
67 // We initialize blind so that changes to the prototype after function creation but before
68 // the first allocation don't disable optimizations. This isn't super important, since the
69 // function is unlikely to allocate a rare data until the first allocation anyway.
70 , m_objectAllocationProfileWatchpoint(ClearWatchpoint)
71{
72}
73
74FunctionRareData::~FunctionRareData()
75{
76}
77
78void FunctionRareData::initializeObjectAllocationProfile(VM& vm, JSGlobalObject* globalObject, JSObject* prototype, size_t inlineCapacity, JSFunction* constructor)
79{
80 if (m_objectAllocationProfileWatchpoint.isStillValid())
81 m_objectAllocationProfileWatchpoint.startWatching();
82
83 m_objectAllocationProfile.initializeProfile(vm, globalObject, this, prototype, inlineCapacity, constructor, this);
84}
85
86void FunctionRareData::clear(const char* reason)
87{
88 m_objectAllocationProfile.clear();
89 m_internalFunctionAllocationProfile.clear();
90 m_objectAllocationProfileWatchpoint.fireAll(*vm(), reason);
91}
92
93void FunctionRareData::AllocationProfileClearingWatchpoint::fireInternal(VM&, const FireDetail&)
94{
95 m_rareData->clear("AllocationProfileClearingWatchpoint fired.");
96}
97
98}
99