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Side by Side Diff: runtime/vm/dart_entry.h

Issue 1337083004: - Turn on writing of ic_data_array so that we have that information for script snapshots that would… (Closed) Base URL: git@github.com:dart-lang/sdk.git@master
Patch Set: Created 5 years, 3 months ago
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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 4
5 #ifndef VM_DART_ENTRY_H_ 5 #ifndef VM_DART_ENTRY_H_
6 #define VM_DART_ENTRY_H_ 6 #define VM_DART_ENTRY_H_
7 7
8 #include "vm/allocation.h" 8 #include "vm/allocation.h"
9 #include "vm/growable_array.h" 9 #include "vm/growable_array.h"
10 10
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53 static RawArray* New(intptr_t count, 53 static RawArray* New(intptr_t count,
54 const Array& optional_arguments_names); 54 const Array& optional_arguments_names);
55 55
56 // Allocate and return an arguments descriptor that has no optional 56 // Allocate and return an arguments descriptor that has no optional
57 // arguments. All arguments are positional. 57 // arguments. All arguments are positional.
58 static RawArray* New(intptr_t count); 58 static RawArray* New(intptr_t count);
59 59
60 // Initialize the preallocated fixed length arguments descriptors cache. 60 // Initialize the preallocated fixed length arguments descriptors cache.
61 static void InitOnce(); 61 static void InitOnce();
62 62
63 enum {
64 kCachedDescriptorCount = 32
65 };
66
63 private: 67 private:
64 // Absolute indexes into the array. 68 // Absolute indexes into the array.
65 enum { 69 enum {
66 kCountIndex, 70 kCountIndex,
67 kPositionalCountIndex, 71 kPositionalCountIndex,
68 kFirstNamedEntryIndex, 72 kFirstNamedEntryIndex,
69 }; 73 };
70 74
71 // Relative indexes into each named argument entry. 75 // Relative indexes into each named argument entry.
72 enum { 76 enum {
73 kNameOffset, 77 kNameOffset,
74 kPositionOffset, 78 kPositionOffset,
75 kNamedEntrySize, 79 kNamedEntrySize,
76 }; 80 };
77 81
78 enum {
79 kCachedDescriptorCount = 32
80 };
81
82 static intptr_t LengthFor(intptr_t count) { 82 static intptr_t LengthFor(intptr_t count) {
83 // Add 1 for the terminating null. 83 // Add 1 for the terminating null.
84 return kFirstNamedEntryIndex + (kNamedEntrySize * count) + 1; 84 return kFirstNamedEntryIndex + (kNamedEntrySize * count) + 1;
85 } 85 }
86 86
87 static RawArray* NewNonCached(intptr_t count, bool canonicalize = true); 87 static RawArray* NewNonCached(intptr_t count, bool canonicalize = true);
88 88
89 const Array& array_; 89 const Array& array_;
90 90
91 // A cache of VM heap allocated arguments descriptors. 91 // A cache of VM heap allocated arguments descriptors.
92 static RawArray* cached_args_descriptors_[kCachedDescriptorCount]; 92 static RawArray* cached_args_descriptors_[kCachedDescriptorCount];
93 93
94 friend class FullSnapshotWriter; 94 friend class SnapshotReader;
95 friend class VmIsolateSnapshotReader; 95 friend class SnapshotWriter;
96 DISALLOW_COPY_AND_ASSIGN(ArgumentsDescriptor); 96 DISALLOW_COPY_AND_ASSIGN(ArgumentsDescriptor);
97 }; 97 };
98 98
99 99
100 // DartEntry abstracts functionality needed to resolve dart functions 100 // DartEntry abstracts functionality needed to resolve dart functions
101 // and invoke them from C++. 101 // and invoke them from C++.
102 class DartEntry : public AllStatic { 102 class DartEntry : public AllStatic {
103 public: 103 public:
104 // On success, returns a RawInstance. On failure, a RawError. 104 // On success, returns a RawInstance. On failure, a RawError.
105 typedef RawObject* (*invokestub)(uword entry_point, 105 typedef RawObject* (*invokestub)(uword entry_point,
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172 // 172 //
173 // Returns null on success, a RawError on failure. 173 // Returns null on success, a RawError on failure.
174 static RawObject* MapSetAt(const Instance& map, 174 static RawObject* MapSetAt(const Instance& map,
175 const Instance& key, 175 const Instance& key,
176 const Instance& value); 176 const Instance& value);
177 }; 177 };
178 178
179 } // namespace dart 179 } // namespace dart
180 180
181 #endif // VM_DART_ENTRY_H_ 181 #endif // VM_DART_ENTRY_H_
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