Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5 | #include "src/assert-scope.h" |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 6 | |
| 7 | #include "src/base/lazy-instance.h" |
| 8 | #include "src/base/platform/platform.h" |
| 9 | #include "src/isolate-inl.h" |
| 10 | #include "src/utils.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 11 | |
| 12 | namespace v8 { |
| 13 | namespace internal { |
| 14 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 15 | namespace { |
| 16 | |
| 17 | struct PerThreadAssertKeyConstructTrait FINAL { |
| 18 | static void Construct(base::Thread::LocalStorageKey* key) { |
| 19 | *key = base::Thread::CreateThreadLocalKey(); |
| 20 | } |
| 21 | }; |
| 22 | |
| 23 | |
| 24 | typedef base::LazyStaticInstance<base::Thread::LocalStorageKey, |
| 25 | PerThreadAssertKeyConstructTrait>::type |
| 26 | PerThreadAssertKey; |
| 27 | |
| 28 | |
| 29 | PerThreadAssertKey kPerThreadAssertKey; |
| 30 | |
| 31 | } // namespace |
| 32 | |
| 33 | |
| 34 | class PerThreadAssertData FINAL { |
| 35 | public: |
| 36 | PerThreadAssertData() : nesting_level_(0) { |
| 37 | for (int i = 0; i < LAST_PER_THREAD_ASSERT_TYPE; i++) { |
| 38 | assert_states_[i] = true; |
| 39 | } |
| 40 | } |
| 41 | |
| 42 | ~PerThreadAssertData() { |
| 43 | for (int i = 0; i < LAST_PER_THREAD_ASSERT_TYPE; ++i) { |
| 44 | DCHECK(assert_states_[i]); |
| 45 | } |
| 46 | } |
| 47 | |
| 48 | bool Get(PerThreadAssertType type) const { return assert_states_[type]; } |
| 49 | void Set(PerThreadAssertType type, bool x) { assert_states_[type] = x; } |
| 50 | |
| 51 | void IncrementLevel() { ++nesting_level_; } |
| 52 | bool DecrementLevel() { return --nesting_level_ == 0; } |
| 53 | |
| 54 | static PerThreadAssertData* GetCurrent() { |
| 55 | return reinterpret_cast<PerThreadAssertData*>( |
| 56 | base::Thread::GetThreadLocal(kPerThreadAssertKey.Get())); |
| 57 | } |
| 58 | static void SetCurrent(PerThreadAssertData* data) { |
| 59 | base::Thread::SetThreadLocal(kPerThreadAssertKey.Get(), data); |
| 60 | } |
| 61 | |
| 62 | private: |
| 63 | bool assert_states_[LAST_PER_THREAD_ASSERT_TYPE]; |
| 64 | int nesting_level_; |
| 65 | |
| 66 | DISALLOW_COPY_AND_ASSIGN(PerThreadAssertData); |
| 67 | }; |
| 68 | |
| 69 | |
| 70 | template <PerThreadAssertType kType, bool kAllow> |
| 71 | PerThreadAssertScope<kType, kAllow>::PerThreadAssertScope() |
| 72 | : data_(PerThreadAssertData::GetCurrent()) { |
| 73 | if (data_ == NULL) { |
| 74 | data_ = new PerThreadAssertData(); |
| 75 | PerThreadAssertData::SetCurrent(data_); |
| 76 | } |
| 77 | data_->IncrementLevel(); |
| 78 | old_state_ = data_->Get(kType); |
| 79 | data_->Set(kType, kAllow); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 80 | } |
| 81 | |
| 82 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 83 | template <PerThreadAssertType kType, bool kAllow> |
| 84 | PerThreadAssertScope<kType, kAllow>::~PerThreadAssertScope() { |
| 85 | DCHECK_NOT_NULL(data_); |
| 86 | data_->Set(kType, old_state_); |
| 87 | if (data_->DecrementLevel()) { |
| 88 | PerThreadAssertData::SetCurrent(NULL); |
| 89 | delete data_; |
| 90 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 91 | } |
| 92 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame^] | 93 | |
| 94 | // static |
| 95 | template <PerThreadAssertType kType, bool kAllow> |
| 96 | bool PerThreadAssertScope<kType, kAllow>::IsAllowed() { |
| 97 | PerThreadAssertData* data = PerThreadAssertData::GetCurrent(); |
| 98 | return data == NULL || data->Get(kType); |
| 99 | } |
| 100 | |
| 101 | |
| 102 | template <PerIsolateAssertType kType, bool kAllow> |
| 103 | class PerIsolateAssertScope<kType, kAllow>::DataBit |
| 104 | : public BitField<bool, kType, 1> {}; |
| 105 | |
| 106 | |
| 107 | template <PerIsolateAssertType kType, bool kAllow> |
| 108 | PerIsolateAssertScope<kType, kAllow>::PerIsolateAssertScope(Isolate* isolate) |
| 109 | : isolate_(isolate), old_data_(isolate->per_isolate_assert_data()) { |
| 110 | DCHECK_NOT_NULL(isolate); |
| 111 | STATIC_ASSERT(kType < 32); |
| 112 | isolate_->set_per_isolate_assert_data(DataBit::update(old_data_, kAllow)); |
| 113 | } |
| 114 | |
| 115 | |
| 116 | template <PerIsolateAssertType kType, bool kAllow> |
| 117 | PerIsolateAssertScope<kType, kAllow>::~PerIsolateAssertScope() { |
| 118 | isolate_->set_per_isolate_assert_data(old_data_); |
| 119 | } |
| 120 | |
| 121 | |
| 122 | // static |
| 123 | template <PerIsolateAssertType kType, bool kAllow> |
| 124 | bool PerIsolateAssertScope<kType, kAllow>::IsAllowed(Isolate* isolate) { |
| 125 | return DataBit::decode(isolate->per_isolate_assert_data()); |
| 126 | } |
| 127 | |
| 128 | |
| 129 | // ----------------------------------------------------------------------------- |
| 130 | // Instantiations. |
| 131 | |
| 132 | template class PerThreadAssertScope<HEAP_ALLOCATION_ASSERT, false>; |
| 133 | template class PerThreadAssertScope<HEAP_ALLOCATION_ASSERT, true>; |
| 134 | template class PerThreadAssertScope<HANDLE_ALLOCATION_ASSERT, false>; |
| 135 | template class PerThreadAssertScope<HANDLE_ALLOCATION_ASSERT, true>; |
| 136 | template class PerThreadAssertScope<HANDLE_DEREFERENCE_ASSERT, false>; |
| 137 | template class PerThreadAssertScope<HANDLE_DEREFERENCE_ASSERT, true>; |
| 138 | template class PerThreadAssertScope<DEFERRED_HANDLE_DEREFERENCE_ASSERT, false>; |
| 139 | template class PerThreadAssertScope<DEFERRED_HANDLE_DEREFERENCE_ASSERT, true>; |
| 140 | template class PerThreadAssertScope<CODE_DEPENDENCY_CHANGE_ASSERT, false>; |
| 141 | template class PerThreadAssertScope<CODE_DEPENDENCY_CHANGE_ASSERT, true>; |
| 142 | |
| 143 | template class PerIsolateAssertScope<JAVASCRIPT_EXECUTION_ASSERT, false>; |
| 144 | template class PerIsolateAssertScope<JAVASCRIPT_EXECUTION_ASSERT, true>; |
| 145 | template class PerIsolateAssertScope<JAVASCRIPT_EXECUTION_THROWS, false>; |
| 146 | template class PerIsolateAssertScope<JAVASCRIPT_EXECUTION_THROWS, true>; |
| 147 | template class PerIsolateAssertScope<ALLOCATION_FAILURE_ASSERT, false>; |
| 148 | template class PerIsolateAssertScope<ALLOCATION_FAILURE_ASSERT, true>; |
| 149 | template class PerIsolateAssertScope<DEOPTIMIZATION_ASSERT, false>; |
| 150 | template class PerIsolateAssertScope<DEOPTIMIZATION_ASSERT, true>; |
| 151 | template class PerIsolateAssertScope<COMPILATION_ASSERT, false>; |
| 152 | template class PerIsolateAssertScope<COMPILATION_ASSERT, true>; |
| 153 | |
| 154 | } // namespace internal |
| 155 | } // namespace v8 |