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1/*
2 * Copyright (C) 2013, 2014 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#ifndef DFGPlan_h
27#define DFGPlan_h
28
29#include "CompilationResult.h"
30#include "DFGCompilationKey.h"
31#include "DFGCompilationMode.h"
32#include "DFGDesiredIdentifiers.h"
33#include "DFGDesiredStructureChains.h"
34#include "DFGDesiredTransitions.h"
35#include "DFGDesiredWatchpoints.h"
36#include "DFGDesiredWeakReferences.h"
37#include "DFGDesiredWriteBarriers.h"
38#include "DFGFinalizer.h"
39#include "DeferredCompilationCallback.h"
40#include "Operands.h"
41#include "ProfilerCompilation.h"
42#include <wtf/ThreadSafeRefCounted.h>
43
44namespace JSC {
45
46class CodeBlock;
47class CodeBlockSet;
48class SlotVisitor;
49
50namespace DFG {
51
52class LongLivedState;
53class ThreadData;
54
55#if ENABLE(DFG_JIT)
56
57struct Plan : public ThreadSafeRefCounted<Plan> {
58 Plan(
59 PassRefPtr<CodeBlock> codeBlockToCompile, CodeBlock* profiledDFGCodeBlock,
60 CompilationMode, unsigned osrEntryBytecodeIndex,
61 const Operands<JSValue>& mustHandleValues);
62 ~Plan();
63
64 void compileInThread(LongLivedState&, ThreadData*);
65
66 CompilationResult finalizeWithoutNotifyingCallback();
67 void finalizeAndNotifyCallback();
68
69 void notifyCompiling();
70 void notifyCompiled();
71 void notifyReady();
72
73 CompilationKey key();
74
75 void checkLivenessAndVisitChildren(SlotVisitor&, CodeBlockSet&);
76 bool isKnownToBeLiveDuringGC();
77 void cancel();
78
79 VM& vm;
80 RefPtr<CodeBlock> codeBlock;
81 RefPtr<CodeBlock> profiledDFGCodeBlock;
82 CompilationMode mode;
83 const unsigned osrEntryBytecodeIndex;
84 Operands<JSValue> mustHandleValues;
85
86 ThreadData* threadData;
87
88 RefPtr<Profiler::Compilation> compilation;
89
90 OwnPtr<Finalizer> finalizer;
91
92 RefPtr<InlineCallFrameSet> inlineCallFrames;
93 DesiredWatchpoints watchpoints;
94 DesiredIdentifiers identifiers;
95 DesiredStructureChains chains;
96 DesiredWeakReferences weakReferences;
97 DesiredWriteBarriers writeBarriers;
98 DesiredTransitions transitions;
99
100 bool willTryToTierUp;
101
102 double beforeFTL;
103
104 enum Stage { Preparing, Compiling, Compiled, Ready, Cancelled };
105 Stage stage;
106
107 RefPtr<DeferredCompilationCallback> callback;
108
109private:
110 bool reportCompileTimes() const;
111
112 enum CompilationPath { FailPath, DFGPath, FTLPath, CancelPath };
113 CompilationPath compileInThreadImpl(LongLivedState&);
114
115 bool isStillValid();
116 void reallyAdd(CommonData*);
117};
118
119#else // ENABLE(DFG_JIT)
120
121class Plan : public RefCounted<Plan> {
122 // Dummy class to allow !ENABLE(DFG_JIT) to build.
123};
124
125#endif // ENABLE(DFG_JIT)
126
127} } // namespace JSC::DFG
128
129#endif // DFGPlan_h
130