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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, 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_COMPILER_H_ | 5 #ifndef VM_COMPILER_H_ |
6 #define VM_COMPILER_H_ | 6 #define VM_COMPILER_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 #include "vm/runtime_entry.h" | 10 #include "vm/runtime_entry.h" |
11 #include "vm/thread_pool.h" | 11 #include "vm/thread_pool.h" |
12 | 12 |
13 namespace dart { | 13 namespace dart { |
14 | 14 |
15 // Forward declarations. | 15 // Forward declarations. |
16 class Class; | 16 class Class; |
| 17 class Code; |
17 class Function; | 18 class Function; |
18 class Library; | 19 class Library; |
19 class ParsedFunction; | 20 class ParsedFunction; |
20 class RawInstance; | 21 class RawInstance; |
21 class Script; | 22 class Script; |
22 class SequenceNode; | 23 class SequenceNode; |
23 | 24 |
24 class Compiler : public AllStatic { | 25 class Compiler : public AllStatic { |
25 public: | 26 public: |
| 27 static const intptr_t kNoOSRDeoptId = Thread::kNoDeoptId; |
| 28 |
26 // Extracts top level entities from the script and populates | 29 // Extracts top level entities from the script and populates |
27 // the class dictionary of the library. | 30 // the class dictionary of the library. |
28 // | 31 // |
29 // Returns Error::null() if there is no compilation error. | 32 // Returns Error::null() if there is no compilation error. |
30 static RawError* Compile(const Library& library, const Script& script); | 33 static RawError* Compile(const Library& library, const Script& script); |
31 | 34 |
32 // Extracts function and field symbols from the class and populates | 35 // Extracts function and field symbols from the class and populates |
33 // the class. | 36 // the class. |
34 // | 37 // |
35 // Returns Error::null() if there is no compilation error. | 38 // Returns Error::null() if there is no compilation error. |
36 static RawError* CompileClass(const Class& cls); | 39 static RawError* CompileClass(const Class& cls); |
37 | 40 |
38 // Generates code for given function and sets its code field. | 41 // Generates code for given function and sets its code field. |
39 // | 42 // |
40 // Returns Error::null() if there is no compilation error. | 43 // Returns Error::null() if there is no compilation error. |
41 static RawError* CompileFunction(Thread* thread, const Function& function); | 44 static RawError* CompileFunction(Thread* thread, const Function& function); |
42 | 45 |
43 // Generates unoptimized code if not present, current code is unchanged. | 46 // Generates unoptimized code if not present, current code is unchanged. |
44 static RawError* EnsureUnoptimizedCode(Thread* thread, | 47 static RawError* EnsureUnoptimizedCode(Thread* thread, |
45 const Function& function); | 48 const Function& function); |
46 | 49 |
47 // Generates optimized code for function. | 50 // Generates optimized code for function. |
48 // | 51 // |
49 // Returns Error::null() if there is no compilation error. | 52 // Returns Error::null() if there is no compilation error. |
| 53 // If 'result_code' is not NULL, then the generated code is returned but |
| 54 // not installed. |
50 static RawError* CompileOptimizedFunction( | 55 static RawError* CompileOptimizedFunction( |
51 Thread* thread, | 56 Thread* thread, |
52 const Function& function, | 57 const Function& function, |
53 intptr_t osr_id = Thread::kNoDeoptId); | 58 intptr_t osr_id = kNoOSRDeoptId, |
| 59 Code* result_code = NULL); |
54 | 60 |
55 // Generates code for given parsed function (without parsing it again) and | 61 // Generates code for given parsed function (without parsing it again) and |
56 // sets its code field. | 62 // sets its code field. |
57 // | 63 // |
58 // Returns Error::null() if there is no compilation error. | 64 // Returns Error::null() if there is no compilation error. |
59 static RawError* CompileParsedFunction(ParsedFunction* parsed_function); | 65 static RawError* CompileParsedFunction(ParsedFunction* parsed_function); |
60 | 66 |
61 // Generates and executes code for a given code fragment, e.g. a | 67 // Generates and executes code for a given code fragment, e.g. a |
62 // compile time constant expression. Returns the result returned | 68 // compile time constant expression. Returns the result returned |
63 // by the fragment. | 69 // by the fragment. |
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97 | 103 |
98 private: | 104 private: |
99 static bool always_optimize_; | 105 static bool always_optimize_; |
100 static bool allow_recompilation_; | 106 static bool allow_recompilation_; |
101 }; | 107 }; |
102 | 108 |
103 | 109 |
104 // Class to run optimizing compilation in a background thread. | 110 // Class to run optimizing compilation in a background thread. |
105 // Current implementation: one task per isolate, it dies with the owning | 111 // Current implementation: one task per isolate, it dies with the owning |
106 // isolate. | 112 // isolate. |
| 113 // No OSR compilation in the background compiler. |
107 class BackgroundCompiler : public ThreadPool::Task { | 114 class BackgroundCompiler : public ThreadPool::Task { |
108 public: | 115 public: |
109 static void EnsureInit(Thread* thread); | 116 static void EnsureInit(Thread* thread); |
110 | 117 |
111 static void Stop(BackgroundCompiler* task); | 118 static void Stop(BackgroundCompiler* task); |
112 | 119 |
| 120 // Call to optimize a function in the background, enters the function in the |
| 121 // compilation queue. |
113 void CompileOptimized(const Function& function); | 122 void CompileOptimized(const Function& function); |
114 | 123 |
| 124 // Call to activate/install optimized code (must occur in the mutator thread). |
| 125 void InstallGeneratedCode(); |
| 126 |
115 // Access to queue length is guarded with queue_monitor_; | 127 // Access to queue length is guarded with queue_monitor_; |
116 intptr_t queue_length() const { return queue_length_; } | 128 intptr_t function_queue_length() const { return function_queue_length_; } |
117 void set_queue_length(intptr_t value) { queue_length_ = value; } | 129 void set_function_queue_length(intptr_t value) { |
| 130 function_queue_length_ = value; |
| 131 } |
118 | 132 |
119 private: | 133 private: |
120 explicit BackgroundCompiler(Isolate* isolate); | 134 explicit BackgroundCompiler(Isolate* isolate); |
121 | 135 |
| 136 GrowableObjectArray* FunctionsQueue() const; |
| 137 GrowableObjectArray* CodesQueue() const; |
| 138 |
122 virtual void Run(); | 139 virtual void Run(); |
123 | 140 |
124 void Add(const Function& f); | 141 void AddFunction(const Function& f); |
125 RawFunction* RemoveOrNull(); | 142 RawFunction* RemoveFunctionOrNull(); |
126 RawFunction* LastOrNull() const; | 143 RawFunction* LastFunctionOrNull() const; |
| 144 |
| 145 void AddCode(const Code& c); |
127 | 146 |
128 Isolate* isolate_; | 147 Isolate* isolate_; |
129 bool running_; // While true, will try to read queue and compile. | 148 bool running_; // While true, will try to read queue and compile. |
130 bool* done_; // True if the thread is done. | 149 bool* done_; // True if the thread is done. |
131 Monitor* queue_monitor_; // Controls access to the queue. | 150 Monitor* queue_monitor_; // Controls access to the queue. |
132 Monitor* done_monitor_; // Notify/wait that the thread is done. | 151 Monitor* done_monitor_; // Notify/wait that the thread is done. |
133 | 152 |
134 intptr_t queue_length_; // Lightweight access to length of compiler queue. | 153 // Lightweight access to length of compiler queue. |
| 154 intptr_t function_queue_length_; |
135 | 155 |
136 DISALLOW_IMPLICIT_CONSTRUCTORS(BackgroundCompiler); | 156 DISALLOW_IMPLICIT_CONSTRUCTORS(BackgroundCompiler); |
137 }; | 157 }; |
138 | 158 |
139 } // namespace dart | 159 } // namespace dart |
140 | 160 |
141 #endif // VM_COMPILER_H_ | 161 #endif // VM_COMPILER_H_ |
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