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| 1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 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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| 32 #include "runtime-profiler.h" | 32 #include "runtime-profiler.h" |
| 33 | 33 |
| 34 namespace v8 { | 34 namespace v8 { |
| 35 namespace internal { | 35 namespace internal { |
| 36 | 36 |
| 37 // | 37 // |
| 38 // VMState class implementation. A simple stack of VM states held by the | 38 // VMState class implementation. A simple stack of VM states held by the |
| 39 // logger and partially threaded through the call stack. States are pushed by | 39 // logger and partially threaded through the call stack. States are pushed by |
| 40 // VMState construction and popped by destruction. | 40 // VMState construction and popped by destruction. |
| 41 // | 41 // |
| 42 #ifdef ENABLE_VMSTATE_TRACKING | |
| 43 inline const char* StateToString(StateTag state) { | 42 inline const char* StateToString(StateTag state) { |
| 44 switch (state) { | 43 switch (state) { |
| 45 case JS: | 44 case JS: |
| 46 return "JS"; | 45 return "JS"; |
| 47 case GC: | 46 case GC: |
| 48 return "GC"; | 47 return "GC"; |
| 49 case COMPILER: | 48 case COMPILER: |
| 50 return "COMPILER"; | 49 return "COMPILER"; |
| 51 case OTHER: | 50 case OTHER: |
| 52 return "OTHER"; | 51 return "OTHER"; |
| 53 case EXTERNAL: | 52 case EXTERNAL: |
| 54 return "EXTERNAL"; | 53 return "EXTERNAL"; |
| 55 default: | 54 default: |
| 56 UNREACHABLE(); | 55 UNREACHABLE(); |
| 57 return NULL; | 56 return NULL; |
| 58 } | 57 } |
| 59 } | 58 } |
| 60 | 59 |
| 61 | 60 |
| 62 VMState::VMState(Isolate* isolate, StateTag tag) | 61 VMState::VMState(Isolate* isolate, StateTag tag) |
| 63 : isolate_(isolate), previous_tag_(isolate->current_vm_state()) { | 62 : isolate_(isolate), previous_tag_(isolate->current_vm_state()) { |
| 64 #ifdef ENABLE_LOGGING_AND_PROFILING | |
| 65 if (FLAG_log_state_changes) { | 63 if (FLAG_log_state_changes) { |
| 66 LOG(isolate, UncheckedStringEvent("Entering", StateToString(tag))); | 64 LOG(isolate, UncheckedStringEvent("Entering", StateToString(tag))); |
| 67 LOG(isolate, UncheckedStringEvent("From", StateToString(previous_tag_))); | 65 LOG(isolate, UncheckedStringEvent("From", StateToString(previous_tag_))); |
| 68 } | 66 } |
| 69 #endif | |
| 70 | 67 |
| 71 isolate_->SetCurrentVMState(tag); | 68 isolate_->SetCurrentVMState(tag); |
| 72 } | 69 } |
| 73 | 70 |
| 74 | 71 |
| 75 VMState::~VMState() { | 72 VMState::~VMState() { |
| 76 #ifdef ENABLE_LOGGING_AND_PROFILING | |
| 77 if (FLAG_log_state_changes) { | 73 if (FLAG_log_state_changes) { |
| 78 LOG(isolate_, | 74 LOG(isolate_, |
| 79 UncheckedStringEvent("Leaving", | 75 UncheckedStringEvent("Leaving", |
| 80 StateToString(isolate_->current_vm_state()))); | 76 StateToString(isolate_->current_vm_state()))); |
| 81 LOG(isolate_, | 77 LOG(isolate_, |
| 82 UncheckedStringEvent("To", StateToString(previous_tag_))); | 78 UncheckedStringEvent("To", StateToString(previous_tag_))); |
| 83 } | 79 } |
| 84 #endif // ENABLE_LOGGING_AND_PROFILING | |
| 85 | 80 |
| 86 isolate_->SetCurrentVMState(previous_tag_); | 81 isolate_->SetCurrentVMState(previous_tag_); |
| 87 } | 82 } |
| 88 | 83 |
| 89 #endif // ENABLE_VMSTATE_TRACKING | |
| 90 | |
| 91 | |
| 92 #ifdef ENABLE_LOGGING_AND_PROFILING | |
| 93 | 84 |
| 94 ExternalCallbackScope::ExternalCallbackScope(Isolate* isolate, Address callback) | 85 ExternalCallbackScope::ExternalCallbackScope(Isolate* isolate, Address callback) |
| 95 : isolate_(isolate), previous_callback_(isolate->external_callback()) { | 86 : isolate_(isolate), previous_callback_(isolate->external_callback()) { |
| 96 isolate_->set_external_callback(callback); | 87 isolate_->set_external_callback(callback); |
| 97 } | 88 } |
| 98 | 89 |
| 99 ExternalCallbackScope::~ExternalCallbackScope() { | 90 ExternalCallbackScope::~ExternalCallbackScope() { |
| 100 isolate_->set_external_callback(previous_callback_); | 91 isolate_->set_external_callback(previous_callback_); |
| 101 } | 92 } |
| 102 | 93 |
| 103 #endif // ENABLE_LOGGING_AND_PROFILING | |
| 104 | |
| 105 | 94 |
| 106 } } // namespace v8::internal | 95 } } // namespace v8::internal |
| 107 | 96 |
| 108 #endif // V8_VM_STATE_INL_H_ | 97 #endif // V8_VM_STATE_INL_H_ |
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