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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 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
28 #ifndef V8_OPTIMIZING_COMPILER_THREAD_H_ | 28 #ifndef V8_OPTIMIZING_COMPILER_THREAD_H_ |
29 #define V8_OPTIMIZING_COMPILER_THREAD_H_ | 29 #define V8_OPTIMIZING_COMPILER_THREAD_H_ |
30 | 30 |
31 #include "atomicops.h" | 31 #include "atomicops.h" |
| 32 #include "flags.h" |
32 #include "platform.h" | 33 #include "platform.h" |
33 #include "flags.h" | |
34 #include "unbound-queue.h" | 34 #include "unbound-queue.h" |
35 | 35 |
36 namespace v8 { | 36 namespace v8 { |
37 namespace internal { | 37 namespace internal { |
38 | 38 |
39 class HGraphBuilder; | 39 class HGraphBuilder; |
40 class OptimizingCompiler; | 40 class OptimizingCompiler; |
| 41 class SharedFunctionInfo; |
41 | 42 |
42 class OptimizingCompilerThread : public Thread { | 43 class OptimizingCompilerThread : public Thread { |
43 public: | 44 public: |
44 explicit OptimizingCompilerThread(Isolate *isolate) : | 45 explicit OptimizingCompilerThread(Isolate *isolate) : |
45 Thread("OptimizingCompilerThread"), | 46 Thread("OptimizingCompilerThread"), |
46 isolate_(isolate), | 47 isolate_(isolate), |
47 stop_semaphore_(OS::CreateSemaphore(0)), | 48 stop_semaphore_(OS::CreateSemaphore(0)), |
48 input_queue_semaphore_(OS::CreateSemaphore(0)), | 49 input_queue_semaphore_(OS::CreateSemaphore(0)), |
| 50 output_queue_semaphore_(OS::CreateSemaphore(0)), |
49 time_spent_compiling_(0), | 51 time_spent_compiling_(0), |
50 time_spent_total_(0) { | 52 time_spent_total_(0) { |
51 NoBarrier_Store(&stop_thread_, static_cast<AtomicWord>(false)); | 53 NoBarrier_Store(&stop_thread_, static_cast<AtomicWord>(false)); |
52 NoBarrier_Store(&queue_length_, static_cast<AtomicWord>(0)); | 54 NoBarrier_Store(&queue_length_, static_cast<AtomicWord>(0)); |
53 } | 55 } |
54 | 56 |
55 void Run(); | 57 void Run(); |
56 void Stop(); | 58 void Stop(); |
57 void QueueForOptimization(OptimizingCompiler* optimizing_compiler); | 59 void QueueForOptimization(OptimizingCompiler* optimizing_compiler); |
58 void InstallOptimizedFunctions(); | 60 void InstallOptimizedFunctions(); |
59 | 61 |
| 62 // Wait for the next optimized function and install it. |
| 63 Handle<SharedFunctionInfo> InstallNextOptimizedFunction(); |
| 64 |
60 inline bool IsQueueAvailable() { | 65 inline bool IsQueueAvailable() { |
61 // We don't need a barrier since we have a data dependency right | 66 // We don't need a barrier since we have a data dependency right |
62 // after. | 67 // after. |
63 Atomic32 current_length = NoBarrier_Load(&queue_length_); | 68 Atomic32 current_length = NoBarrier_Load(&queue_length_); |
64 | 69 |
65 // This can be queried only from the execution thread. | 70 // This can be queried only from the execution thread. |
66 ASSERT(!IsOptimizerThread()); | 71 ASSERT(!IsOptimizerThread()); |
67 // Since only the execution thread increments queue_length_ and | 72 // Since only the execution thread increments queue_length_ and |
68 // only one thread can run inside an Isolate at one time, a direct | 73 // only one thread can run inside an Isolate at one time, a direct |
69 // doesn't introduce a race -- queue_length_ may decreased in | 74 // doesn't introduce a race -- queue_length_ may decreased in |
70 // meantime, but not increased. | 75 // meantime, but not increased. |
71 return (current_length < FLAG_parallel_recompilation_queue_length); | 76 return (current_length < FLAG_parallel_recompilation_queue_length); |
72 } | 77 } |
73 | 78 |
74 #ifdef DEBUG | 79 #ifdef DEBUG |
75 bool IsOptimizerThread(); | 80 bool IsOptimizerThread(); |
76 #endif | 81 #endif |
77 | 82 |
78 ~OptimizingCompilerThread() { | 83 ~OptimizingCompilerThread() { |
79 delete input_queue_semaphore_; | 84 delete input_queue_semaphore_; |
| 85 delete output_queue_semaphore_; // Only used for manual mode. |
80 delete stop_semaphore_; | 86 delete stop_semaphore_; |
81 } | 87 } |
82 | 88 |
83 private: | 89 private: |
84 Isolate* isolate_; | 90 Isolate* isolate_; |
85 Semaphore* stop_semaphore_; | 91 Semaphore* stop_semaphore_; |
86 Semaphore* input_queue_semaphore_; | 92 Semaphore* input_queue_semaphore_; |
| 93 Semaphore* output_queue_semaphore_; |
87 UnboundQueue<OptimizingCompiler*> input_queue_; | 94 UnboundQueue<OptimizingCompiler*> input_queue_; |
88 UnboundQueue<OptimizingCompiler*> output_queue_; | 95 UnboundQueue<OptimizingCompiler*> output_queue_; |
89 volatile AtomicWord stop_thread_; | 96 volatile AtomicWord stop_thread_; |
90 volatile Atomic32 queue_length_; | 97 volatile Atomic32 queue_length_; |
91 int64_t time_spent_compiling_; | 98 int64_t time_spent_compiling_; |
92 int64_t time_spent_total_; | 99 int64_t time_spent_total_; |
93 | 100 |
94 #ifdef DEBUG | 101 #ifdef DEBUG |
95 int thread_id_; | 102 int thread_id_; |
96 #endif | 103 #endif |
97 }; | 104 }; |
98 | 105 |
99 } } // namespace v8::internal | 106 } } // namespace v8::internal |
100 | 107 |
101 #endif // V8_OPTIMIZING_COMPILER_THREAD_H_ | 108 #endif // V8_OPTIMIZING_COMPILER_THREAD_H_ |
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