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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 #include "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #include "src/base/atomicops.h" | 7 #include "src/base/atomicops.h" |
8 #include "src/base/bits.h" | 8 #include "src/base/bits.h" |
9 #include "src/code-stubs.h" | 9 #include "src/code-stubs.h" |
10 #include "src/compilation-cache.h" | 10 #include "src/compilation-cache.h" |
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1017 // reachable from the objects on the marking stack, but no longer push them on | 1017 // reachable from the objects on the marking stack, but no longer push them on |
1018 // the marking stack. Instead, we mark them as both marked and overflowed. | 1018 // the marking stack. Instead, we mark them as both marked and overflowed. |
1019 // When the stack is in the overflowed state, objects marked as overflowed | 1019 // When the stack is in the overflowed state, objects marked as overflowed |
1020 // have been reached and marked but their children have not been visited yet. | 1020 // have been reached and marked but their children have not been visited yet. |
1021 // After emptying the marking stack, we clear the overflow flag and traverse | 1021 // After emptying the marking stack, we clear the overflow flag and traverse |
1022 // the heap looking for objects marked as overflowed, push them on the stack, | 1022 // the heap looking for objects marked as overflowed, push them on the stack, |
1023 // and continue with marking. This process repeats until all reachable | 1023 // and continue with marking. This process repeats until all reachable |
1024 // objects have been marked. | 1024 // objects have been marked. |
1025 | 1025 |
1026 void CodeFlusher::ProcessJSFunctionCandidates() { | 1026 void CodeFlusher::ProcessJSFunctionCandidates() { |
1027 Code* lazy_compile = | 1027 Code* lazy_compile = isolate_->builtins()->builtin(Builtins::kCompileLazy); |
1028 isolate_->builtins()->builtin(Builtins::kCompileUnoptimized); | |
1029 Object* undefined = isolate_->heap()->undefined_value(); | 1028 Object* undefined = isolate_->heap()->undefined_value(); |
1030 | 1029 |
1031 JSFunction* candidate = jsfunction_candidates_head_; | 1030 JSFunction* candidate = jsfunction_candidates_head_; |
1032 JSFunction* next_candidate; | 1031 JSFunction* next_candidate; |
1033 while (candidate != NULL) { | 1032 while (candidate != NULL) { |
1034 next_candidate = GetNextCandidate(candidate); | 1033 next_candidate = GetNextCandidate(candidate); |
1035 ClearNextCandidate(candidate, undefined); | 1034 ClearNextCandidate(candidate, undefined); |
1036 | 1035 |
1037 SharedFunctionInfo* shared = candidate->shared(); | 1036 SharedFunctionInfo* shared = candidate->shared(); |
1038 | 1037 |
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1063 shared_code_slot, shared_code_slot, *shared_code_slot); | 1062 shared_code_slot, shared_code_slot, *shared_code_slot); |
1064 | 1063 |
1065 candidate = next_candidate; | 1064 candidate = next_candidate; |
1066 } | 1065 } |
1067 | 1066 |
1068 jsfunction_candidates_head_ = NULL; | 1067 jsfunction_candidates_head_ = NULL; |
1069 } | 1068 } |
1070 | 1069 |
1071 | 1070 |
1072 void CodeFlusher::ProcessSharedFunctionInfoCandidates() { | 1071 void CodeFlusher::ProcessSharedFunctionInfoCandidates() { |
1073 Code* lazy_compile = | 1072 Code* lazy_compile = isolate_->builtins()->builtin(Builtins::kCompileLazy); |
1074 isolate_->builtins()->builtin(Builtins::kCompileUnoptimized); | |
1075 | 1073 |
1076 SharedFunctionInfo* candidate = shared_function_info_candidates_head_; | 1074 SharedFunctionInfo* candidate = shared_function_info_candidates_head_; |
1077 SharedFunctionInfo* next_candidate; | 1075 SharedFunctionInfo* next_candidate; |
1078 while (candidate != NULL) { | 1076 while (candidate != NULL) { |
1079 next_candidate = GetNextCandidate(candidate); | 1077 next_candidate = GetNextCandidate(candidate); |
1080 ClearNextCandidate(candidate); | 1078 ClearNextCandidate(candidate); |
1081 | 1079 |
1082 Code* code = candidate->code(); | 1080 Code* code = candidate->code(); |
1083 MarkBit code_mark = Marking::MarkBitFrom(code); | 1081 MarkBit code_mark = Marking::MarkBitFrom(code); |
1084 if (!code_mark.Get()) { | 1082 if (!code_mark.Get()) { |
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4555 SlotsBuffer* buffer = *buffer_address; | 4553 SlotsBuffer* buffer = *buffer_address; |
4556 while (buffer != NULL) { | 4554 while (buffer != NULL) { |
4557 SlotsBuffer* next_buffer = buffer->next(); | 4555 SlotsBuffer* next_buffer = buffer->next(); |
4558 DeallocateBuffer(buffer); | 4556 DeallocateBuffer(buffer); |
4559 buffer = next_buffer; | 4557 buffer = next_buffer; |
4560 } | 4558 } |
4561 *buffer_address = NULL; | 4559 *buffer_address = NULL; |
4562 } | 4560 } |
4563 } | 4561 } |
4564 } // namespace v8::internal | 4562 } // namespace v8::internal |
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