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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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1779 code_stub_interface_descriptors_(NULL), | 1779 code_stub_interface_descriptors_(NULL), |
1780 context_exit_happened_(false), | 1780 context_exit_happened_(false), |
1781 initialized_from_snapshot_(false), | 1781 initialized_from_snapshot_(false), |
1782 cpu_profiler_(NULL), | 1782 cpu_profiler_(NULL), |
1783 heap_profiler_(NULL), | 1783 heap_profiler_(NULL), |
1784 function_entry_hook_(NULL), | 1784 function_entry_hook_(NULL), |
1785 deferred_handles_head_(NULL), | 1785 deferred_handles_head_(NULL), |
1786 optimizing_compiler_thread_(this), | 1786 optimizing_compiler_thread_(this), |
1787 marking_thread_(NULL), | 1787 marking_thread_(NULL), |
1788 sweeper_thread_(NULL), | 1788 sweeper_thread_(NULL), |
1789 callback_table_(NULL) { | 1789 callback_table_(NULL), |
| 1790 stress_deopt_count_(0) { |
1790 id_ = NoBarrier_AtomicIncrement(&isolate_counter_, 1); | 1791 id_ = NoBarrier_AtomicIncrement(&isolate_counter_, 1); |
1791 TRACE_ISOLATE(constructor); | 1792 TRACE_ISOLATE(constructor); |
1792 | 1793 |
1793 memset(isolate_addresses_, 0, | 1794 memset(isolate_addresses_, 0, |
1794 sizeof(isolate_addresses_[0]) * (kIsolateAddressCount + 1)); | 1795 sizeof(isolate_addresses_[0]) * (kIsolateAddressCount + 1)); |
1795 | 1796 |
1796 heap_.isolate_ = this; | 1797 heap_.isolate_ = this; |
1797 stack_guard_.isolate_ = this; | 1798 stack_guard_.isolate_ = this; |
1798 | 1799 |
1799 // ThreadManager is initialized early to support locking an isolate | 1800 // ThreadManager is initialized early to support locking an isolate |
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1891 if (FLAG_marking_threads > 0) { | 1892 if (FLAG_marking_threads > 0) { |
1892 for (int i = 0; i < FLAG_marking_threads; i++) { | 1893 for (int i = 0; i < FLAG_marking_threads; i++) { |
1893 marking_thread_[i]->Stop(); | 1894 marking_thread_[i]->Stop(); |
1894 delete marking_thread_[i]; | 1895 delete marking_thread_[i]; |
1895 } | 1896 } |
1896 delete[] marking_thread_; | 1897 delete[] marking_thread_; |
1897 } | 1898 } |
1898 | 1899 |
1899 if (FLAG_hydrogen_stats) GetHStatistics()->Print(); | 1900 if (FLAG_hydrogen_stats) GetHStatistics()->Print(); |
1900 | 1901 |
| 1902 if (FLAG_print_deopt_stress) { |
| 1903 PrintF(stdout, "=== Stress deopt counter: %u\n", stress_deopt_count_); |
| 1904 } |
| 1905 |
1901 // We must stop the logger before we tear down other components. | 1906 // We must stop the logger before we tear down other components. |
1902 Sampler* sampler = logger_->sampler(); | 1907 Sampler* sampler = logger_->sampler(); |
1903 if (sampler && sampler->IsActive()) sampler->Stop(); | 1908 if (sampler && sampler->IsActive()) sampler->Stop(); |
1904 | 1909 |
1905 delete deoptimizer_data_; | 1910 delete deoptimizer_data_; |
1906 deoptimizer_data_ = NULL; | 1911 deoptimizer_data_ = NULL; |
1907 if (FLAG_preemption) { | 1912 if (FLAG_preemption) { |
1908 v8::Locker locker(reinterpret_cast<v8::Isolate*>(this)); | 1913 v8::Locker locker(reinterpret_cast<v8::Isolate*>(this)); |
1909 v8::Locker::StopPreemption(); | 1914 v8::Locker::StopPreemption(); |
1910 } | 1915 } |
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2125 Release_Store(&debugger_initialized_, true); | 2130 Release_Store(&debugger_initialized_, true); |
2126 #endif | 2131 #endif |
2127 } | 2132 } |
2128 | 2133 |
2129 | 2134 |
2130 bool Isolate::Init(Deserializer* des) { | 2135 bool Isolate::Init(Deserializer* des) { |
2131 ASSERT(state_ != INITIALIZED); | 2136 ASSERT(state_ != INITIALIZED); |
2132 ASSERT(Isolate::Current() == this); | 2137 ASSERT(Isolate::Current() == this); |
2133 TRACE_ISOLATE(init); | 2138 TRACE_ISOLATE(init); |
2134 | 2139 |
| 2140 stress_deopt_count_ = FLAG_deopt_every_n_times; |
| 2141 |
2135 if (function_entry_hook() != NULL) { | 2142 if (function_entry_hook() != NULL) { |
2136 // When function entry hooking is in effect, we have to create the code | 2143 // When function entry hooking is in effect, we have to create the code |
2137 // stubs from scratch to get entry hooks, rather than loading the previously | 2144 // stubs from scratch to get entry hooks, rather than loading the previously |
2138 // generated stubs from disk. | 2145 // generated stubs from disk. |
2139 // If this assert fires, the initialization path has regressed. | 2146 // If this assert fires, the initialization path has regressed. |
2140 ASSERT(des == NULL); | 2147 ASSERT(des == NULL); |
2141 } | 2148 } |
2142 | 2149 |
2143 // The initialization process does not handle memory exhaustion. | 2150 // The initialization process does not handle memory exhaustion. |
2144 DisallowAllocationFailure disallow_allocation_failure; | 2151 DisallowAllocationFailure disallow_allocation_failure; |
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2505 | 2512 |
2506 #ifdef DEBUG | 2513 #ifdef DEBUG |
2507 #define ISOLATE_FIELD_OFFSET(type, name, ignored) \ | 2514 #define ISOLATE_FIELD_OFFSET(type, name, ignored) \ |
2508 const intptr_t Isolate::name##_debug_offset_ = OFFSET_OF(Isolate, name##_); | 2515 const intptr_t Isolate::name##_debug_offset_ = OFFSET_OF(Isolate, name##_); |
2509 ISOLATE_INIT_LIST(ISOLATE_FIELD_OFFSET) | 2516 ISOLATE_INIT_LIST(ISOLATE_FIELD_OFFSET) |
2510 ISOLATE_INIT_ARRAY_LIST(ISOLATE_FIELD_OFFSET) | 2517 ISOLATE_INIT_ARRAY_LIST(ISOLATE_FIELD_OFFSET) |
2511 #undef ISOLATE_FIELD_OFFSET | 2518 #undef ISOLATE_FIELD_OFFSET |
2512 #endif | 2519 #endif |
2513 | 2520 |
2514 } } // namespace v8::internal | 2521 } } // namespace v8::internal |
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