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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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_OPTIMIZING_COMPILE_DISPATCHER_H_ | 5 #ifndef V8_OPTIMIZING_COMPILE_DISPATCHER_H_ |
6 #define V8_OPTIMIZING_COMPILE_DISPATCHER_H_ | 6 #define V8_OPTIMIZING_COMPILE_DISPATCHER_H_ |
7 | 7 |
8 #include <queue> | 8 #include <queue> |
9 | 9 |
10 #include "src/base/atomicops.h" | 10 #include "src/base/atomicops.h" |
11 #include "src/base/platform/condition-variable.h" | 11 #include "src/base/platform/condition-variable.h" |
12 #include "src/base/platform/mutex.h" | 12 #include "src/base/platform/mutex.h" |
13 #include "src/base/platform/platform.h" | 13 #include "src/base/platform/platform.h" |
14 #include "src/flags.h" | 14 #include "src/flags.h" |
15 #include "src/list.h" | 15 #include "src/list.h" |
16 | 16 |
17 namespace v8 { | 17 namespace v8 { |
18 namespace internal { | 18 namespace internal { |
19 | 19 |
20 class HOptimizedGraphBuilder; | 20 class CompilationJob; |
21 class OptimizedCompileJob; | |
22 class SharedFunctionInfo; | 21 class SharedFunctionInfo; |
23 | 22 |
24 class OptimizingCompileDispatcher { | 23 class OptimizingCompileDispatcher { |
25 public: | 24 public: |
26 explicit OptimizingCompileDispatcher(Isolate* isolate) | 25 explicit OptimizingCompileDispatcher(Isolate* isolate) |
27 : isolate_(isolate), | 26 : isolate_(isolate), |
28 input_queue_capacity_(FLAG_concurrent_recompilation_queue_length), | 27 input_queue_capacity_(FLAG_concurrent_recompilation_queue_length), |
29 input_queue_length_(0), | 28 input_queue_length_(0), |
30 input_queue_shift_(0), | 29 input_queue_shift_(0), |
31 blocked_jobs_(0), | 30 blocked_jobs_(0), |
32 ref_count_(0), | 31 ref_count_(0), |
33 recompilation_delay_(FLAG_concurrent_recompilation_delay) { | 32 recompilation_delay_(FLAG_concurrent_recompilation_delay) { |
34 base::NoBarrier_Store(&mode_, static_cast<base::AtomicWord>(COMPILE)); | 33 base::NoBarrier_Store(&mode_, static_cast<base::AtomicWord>(COMPILE)); |
35 input_queue_ = NewArray<OptimizedCompileJob*>(input_queue_capacity_); | 34 input_queue_ = NewArray<CompilationJob*>(input_queue_capacity_); |
36 } | 35 } |
37 | 36 |
38 ~OptimizingCompileDispatcher(); | 37 ~OptimizingCompileDispatcher(); |
39 | 38 |
40 void Run(); | 39 void Run(); |
41 void Stop(); | 40 void Stop(); |
42 void Flush(); | 41 void Flush(); |
43 void QueueForOptimization(OptimizedCompileJob* optimizing_compiler); | 42 void QueueForOptimization(CompilationJob* job); |
44 void Unblock(); | 43 void Unblock(); |
45 void InstallOptimizedFunctions(); | 44 void InstallOptimizedFunctions(); |
46 | 45 |
47 inline bool IsQueueAvailable() { | 46 inline bool IsQueueAvailable() { |
48 base::LockGuard<base::Mutex> access_input_queue(&input_queue_mutex_); | 47 base::LockGuard<base::Mutex> access_input_queue(&input_queue_mutex_); |
49 return input_queue_length_ < input_queue_capacity_; | 48 return input_queue_length_ < input_queue_capacity_; |
50 } | 49 } |
51 | 50 |
52 static bool Enabled() { return FLAG_concurrent_recompilation; } | 51 static bool Enabled() { return FLAG_concurrent_recompilation; } |
53 | 52 |
54 private: | 53 private: |
55 class CompileTask; | 54 class CompileTask; |
56 | 55 |
57 enum ModeFlag { COMPILE, FLUSH }; | 56 enum ModeFlag { COMPILE, FLUSH }; |
58 | 57 |
59 void FlushOutputQueue(bool restore_function_code); | 58 void FlushOutputQueue(bool restore_function_code); |
60 void CompileNext(OptimizedCompileJob* job); | 59 void CompileNext(CompilationJob* job); |
61 OptimizedCompileJob* NextInput(bool check_if_flushing = false); | 60 CompilationJob* NextInput(bool check_if_flushing = false); |
62 | 61 |
63 inline int InputQueueIndex(int i) { | 62 inline int InputQueueIndex(int i) { |
64 int result = (i + input_queue_shift_) % input_queue_capacity_; | 63 int result = (i + input_queue_shift_) % input_queue_capacity_; |
65 DCHECK_LE(0, result); | 64 DCHECK_LE(0, result); |
66 DCHECK_LT(result, input_queue_capacity_); | 65 DCHECK_LT(result, input_queue_capacity_); |
67 return result; | 66 return result; |
68 } | 67 } |
69 | 68 |
70 Isolate* isolate_; | 69 Isolate* isolate_; |
71 | 70 |
72 // Circular queue of incoming recompilation tasks (including OSR). | 71 // Circular queue of incoming recompilation tasks (including OSR). |
73 OptimizedCompileJob** input_queue_; | 72 CompilationJob** input_queue_; |
74 int input_queue_capacity_; | 73 int input_queue_capacity_; |
75 int input_queue_length_; | 74 int input_queue_length_; |
76 int input_queue_shift_; | 75 int input_queue_shift_; |
77 base::Mutex input_queue_mutex_; | 76 base::Mutex input_queue_mutex_; |
78 | 77 |
79 // Queue of recompilation tasks ready to be installed (excluding OSR). | 78 // Queue of recompilation tasks ready to be installed (excluding OSR). |
80 std::queue<OptimizedCompileJob*> output_queue_; | 79 std::queue<CompilationJob*> output_queue_; |
81 // Used for job based recompilation which has multiple producers on | 80 // Used for job based recompilation which has multiple producers on |
82 // different threads. | 81 // different threads. |
83 base::Mutex output_queue_mutex_; | 82 base::Mutex output_queue_mutex_; |
84 | 83 |
85 volatile base::AtomicWord mode_; | 84 volatile base::AtomicWord mode_; |
86 | 85 |
87 int blocked_jobs_; | 86 int blocked_jobs_; |
88 | 87 |
89 int ref_count_; | 88 int ref_count_; |
90 base::Mutex ref_count_mutex_; | 89 base::Mutex ref_count_mutex_; |
91 base::ConditionVariable ref_count_zero_; | 90 base::ConditionVariable ref_count_zero_; |
92 | 91 |
93 // Copy of FLAG_concurrent_recompilation_delay that will be used from the | 92 // Copy of FLAG_concurrent_recompilation_delay that will be used from the |
94 // background thread. | 93 // background thread. |
95 // | 94 // |
96 // Since flags might get modified while the background thread is running, it | 95 // Since flags might get modified while the background thread is running, it |
97 // is not safe to access them directly. | 96 // is not safe to access them directly. |
98 int recompilation_delay_; | 97 int recompilation_delay_; |
99 }; | 98 }; |
100 } // namespace internal | 99 } // namespace internal |
101 } // namespace v8 | 100 } // namespace v8 |
102 | 101 |
103 #endif // V8_OPTIMIZING_COMPILE_DISPATCHER_H_ | 102 #endif // V8_OPTIMIZING_COMPILE_DISPATCHER_H_ |
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