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1 // Copyright 2016 the V8 project authors. All rights reserved. | 1 // Copyright 2016 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_SOURCE_POSITION_H_ | 5 #ifndef V8_SOURCE_POSITION_H_ |
6 #define V8_SOURCE_POSITION_H_ | 6 #define V8_SOURCE_POSITION_H_ |
7 | 7 |
8 #include <ostream> | 8 #include <ostream> |
9 | 9 |
10 #include "src/flags.h" | 10 #include "src/flags.h" |
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36 SetScriptOffset(script_offset); | 36 SetScriptOffset(script_offset); |
37 SetInliningId(inlining_id); | 37 SetInliningId(inlining_id); |
38 } | 38 } |
39 | 39 |
40 static SourcePosition Unknown() { return SourcePosition(kNoSourcePosition); } | 40 static SourcePosition Unknown() { return SourcePosition(kNoSourcePosition); } |
41 bool IsKnown() const { | 41 bool IsKnown() const { |
42 return ScriptOffset() != kNoSourcePosition || InliningId() != kNotInlined; | 42 return ScriptOffset() != kNoSourcePosition || InliningId() != kNotInlined; |
43 } | 43 } |
44 bool isInlined() const { return InliningId() != kNotInlined; } | 44 bool isInlined() const { return InliningId() != kNotInlined; } |
45 | 45 |
| 46 // Assumes that the code object is optimized |
46 std::vector<SourcePositionInfo> InliningStack(Handle<Code> code) const; | 47 std::vector<SourcePositionInfo> InliningStack(Handle<Code> code) const; |
47 std::vector<SourcePositionInfo> InliningStack(CompilationInfo* code) const; | 48 std::vector<SourcePositionInfo> InliningStack(CompilationInfo* cinfo) const; |
48 | 49 |
49 void Print(std::ostream& out, Code* function) const; | 50 void Print(std::ostream& out, Code* code) const; |
50 | 51 |
51 int ScriptOffset() const { return ScriptOffsetField::decode(value_) - 1; } | 52 int ScriptOffset() const { return ScriptOffsetField::decode(value_) - 1; } |
52 int InliningId() const { return InliningIdField::decode(value_) - 1; } | 53 int InliningId() const { return InliningIdField::decode(value_) - 1; } |
53 | 54 |
54 void SetScriptOffset(int script_offset) { | 55 void SetScriptOffset(int script_offset) { |
55 DCHECK(script_offset <= ScriptOffsetField::kMax - 2); | 56 DCHECK(script_offset <= ScriptOffsetField::kMax - 2); |
56 DCHECK(script_offset >= kNoSourcePosition); | 57 DCHECK(script_offset >= kNoSourcePosition); |
57 value_ = ScriptOffsetField::update(value_, script_offset + 1); | 58 value_ = ScriptOffsetField::update(value_, script_offset + 1); |
58 } | 59 } |
59 void SetInliningId(int inlining_id) { | 60 void SetInliningId(int inlining_id) { |
60 DCHECK(inlining_id <= InliningIdField::kMax - 2); | 61 DCHECK(inlining_id <= InliningIdField::kMax - 2); |
61 DCHECK(inlining_id >= kNotInlined); | 62 DCHECK(inlining_id >= kNotInlined); |
62 value_ = InliningIdField::update(value_, inlining_id + 1); | 63 value_ = InliningIdField::update(value_, inlining_id + 1); |
63 } | 64 } |
64 | 65 |
65 static const int kNotInlined = -1; | 66 static const int kNotInlined = -1; |
66 STATIC_ASSERT(kNoSourcePosition == -1); | 67 STATIC_ASSERT(kNoSourcePosition == -1); |
67 | 68 |
68 int64_t raw() const { return static_cast<int64_t>(value_); } | 69 int64_t raw() const { return static_cast<int64_t>(value_); } |
69 static SourcePosition FromRaw(int64_t raw) { | 70 static SourcePosition FromRaw(int64_t raw) { |
70 SourcePosition position = Unknown(); | 71 SourcePosition position = Unknown(); |
71 DCHECK_GE(raw, 0); | 72 DCHECK_GE(raw, 0); |
72 position.value_ = static_cast<uint64_t>(raw); | 73 position.value_ = static_cast<uint64_t>(raw); |
73 return position; | 74 return position; |
74 } | 75 } |
75 | 76 |
76 private: | 77 private: |
77 void Print(std::ostream& out, SharedFunctionInfo* function) const; | 78 void Print(std::ostream& out, SharedFunctionInfo* function) const; |
78 SourcePositionInfo Info(Handle<SharedFunctionInfo> script) const; | |
79 | 79 |
80 // InliningId is in the high bits for better compression in | 80 // InliningId is in the high bits for better compression in |
81 // SourcePositionTable. | 81 // SourcePositionTable. |
82 typedef BitField64<int, 0, 31> ScriptOffsetField; | 82 typedef BitField64<int, 0, 31> ScriptOffsetField; |
83 typedef BitField64<int, 31, 16> InliningIdField; | 83 typedef BitField64<int, 31, 16> InliningIdField; |
84 // Leaving the highest bit untouched to allow for signed conversion. | 84 // Leaving the highest bit untouched to allow for signed conversion. |
85 uint64_t value_; | 85 uint64_t value_; |
86 }; | 86 }; |
87 | 87 |
88 inline bool operator==(const SourcePosition& lhs, const SourcePosition& rhs) { | 88 inline bool operator==(const SourcePosition& lhs, const SourcePosition& rhs) { |
89 return lhs.raw() == rhs.raw(); | 89 return lhs.raw() == rhs.raw(); |
90 } | 90 } |
91 | 91 |
92 inline bool operator!=(const SourcePosition& lhs, const SourcePosition& rhs) { | 92 inline bool operator!=(const SourcePosition& lhs, const SourcePosition& rhs) { |
93 return !(lhs == rhs); | 93 return !(lhs == rhs); |
94 } | 94 } |
95 | 95 |
96 struct InliningPosition { | 96 struct InliningPosition { |
97 // position of the inlined call | 97 // position of the inlined call |
98 SourcePosition position = SourcePosition::Unknown(); | 98 SourcePosition position = SourcePosition::Unknown(); |
99 | 99 |
100 // references position in DeoptimizationInputData::literals() | 100 // references position in DeoptimizationInputData::literals() |
101 int inlined_function_id; | 101 int inlined_function_id; |
102 }; | 102 }; |
103 | 103 |
104 struct SourcePositionInfo { | 104 struct SourcePositionInfo { |
105 explicit SourcePositionInfo(SourcePosition pos, Handle<SharedFunctionInfo> f) | 105 SourcePositionInfo(SourcePosition pos, Handle<SharedFunctionInfo> f); |
106 : position(pos), function(f) {} | |
107 | 106 |
108 SourcePosition position; | 107 SourcePosition position; |
109 Handle<SharedFunctionInfo> function; | 108 Handle<SharedFunctionInfo> function; |
110 int line = -1; | 109 int line = -1; |
111 int column = -1; | 110 int column = -1; |
112 }; | 111 }; |
113 | 112 |
114 std::ostream& operator<<(std::ostream& out, const SourcePosition& pos); | 113 std::ostream& operator<<(std::ostream& out, const SourcePosition& pos); |
115 | 114 |
116 std::ostream& operator<<(std::ostream& out, const SourcePositionInfo& pos); | 115 std::ostream& operator<<(std::ostream& out, const SourcePositionInfo& pos); |
117 std::ostream& operator<<(std::ostream& out, | 116 std::ostream& operator<<(std::ostream& out, |
118 const std::vector<SourcePositionInfo>& stack); | 117 const std::vector<SourcePositionInfo>& stack); |
119 | 118 |
120 } // namespace internal | 119 } // namespace internal |
121 } // namespace v8 | 120 } // namespace v8 |
122 | 121 |
123 #endif // V8_SOURCE_POSITION_H_ | 122 #endif // V8_SOURCE_POSITION_H_ |
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