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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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999 JSFunction* next_candidate; | 999 JSFunction* next_candidate; |
1000 while (candidate != NULL) { | 1000 while (candidate != NULL) { |
1001 next_candidate = GetNextCandidate(candidate); | 1001 next_candidate = GetNextCandidate(candidate); |
1002 ClearNextCandidate(candidate, undefined); | 1002 ClearNextCandidate(candidate, undefined); |
1003 | 1003 |
1004 SharedFunctionInfo* shared = candidate->shared(); | 1004 SharedFunctionInfo* shared = candidate->shared(); |
1005 | 1005 |
1006 Code* code = shared->code(); | 1006 Code* code = shared->code(); |
1007 MarkBit code_mark = Marking::MarkBitFrom(code); | 1007 MarkBit code_mark = Marking::MarkBitFrom(code); |
1008 if (!code_mark.Get()) { | 1008 if (!code_mark.Get()) { |
1009 if (FLAG_trace_code_flushing && shared->is_compiled()) { | 1009 if (shared->is_compiled()) { |
1010 PrintF("[code-flushing clears: "); | 1010 isolate_->heap()->DecrementCodeGeneratedBytes( |
Michael Starzinger
2013/10/14 09:18:37
IIUC, this tries to keep the new code-bytes counte
rmcilroy
2013/10/14 11:24:14
Ahh right - I thought code would be added to this
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1011 shared->ShortPrint(); | 1011 code->is_crankshafted(), code->instruction_size()); |
1012 PrintF(" - age: %d]\n", code->GetAge()); | 1012 if (FLAG_trace_code_flushing) { |
1013 PrintF("[code-flushing clears: "); | |
1014 shared->ShortPrint(); | |
1015 PrintF(" - age: %d]\n", code->GetAge()); | |
1016 } | |
1013 } | 1017 } |
1014 shared->set_code(lazy_compile); | 1018 shared->set_code(lazy_compile); |
1015 candidate->set_code(lazy_compile); | 1019 candidate->set_code(lazy_compile); |
1016 } else { | 1020 } else { |
1017 candidate->set_code(code); | 1021 candidate->set_code(code); |
1018 } | 1022 } |
1019 | 1023 |
1020 // We are in the middle of a GC cycle so the write barrier in the code | 1024 // We are in the middle of a GC cycle so the write barrier in the code |
1021 // setter did not record the slot update and we have to do that manually. | 1025 // setter did not record the slot update and we have to do that manually. |
1022 Address slot = candidate->address() + JSFunction::kCodeEntryOffset; | 1026 Address slot = candidate->address() + JSFunction::kCodeEntryOffset; |
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1046 ClearNextCandidate(candidate); | 1050 ClearNextCandidate(candidate); |
1047 | 1051 |
1048 Code* code = candidate->code(); | 1052 Code* code = candidate->code(); |
1049 MarkBit code_mark = Marking::MarkBitFrom(code); | 1053 MarkBit code_mark = Marking::MarkBitFrom(code); |
1050 if (!code_mark.Get()) { | 1054 if (!code_mark.Get()) { |
1051 if (FLAG_trace_code_flushing && candidate->is_compiled()) { | 1055 if (FLAG_trace_code_flushing && candidate->is_compiled()) { |
1052 PrintF("[code-flushing clears: "); | 1056 PrintF("[code-flushing clears: "); |
1053 candidate->ShortPrint(); | 1057 candidate->ShortPrint(); |
1054 PrintF(" - age: %d]\n", code->GetAge()); | 1058 PrintF(" - age: %d]\n", code->GetAge()); |
1055 } | 1059 } |
1060 if (candidate->is_compiled()) { | |
1061 isolate_->heap()->DecrementCodeGeneratedBytes( | |
1062 code->is_crankshafted(), code->instruction_size()); | |
1063 } | |
1056 candidate->set_code(lazy_compile); | 1064 candidate->set_code(lazy_compile); |
1057 } | 1065 } |
1058 | 1066 |
1059 Object** code_slot = | 1067 Object** code_slot = |
1060 HeapObject::RawField(candidate, SharedFunctionInfo::kCodeOffset); | 1068 HeapObject::RawField(candidate, SharedFunctionInfo::kCodeOffset); |
1061 isolate_->heap()->mark_compact_collector()-> | 1069 isolate_->heap()->mark_compact_collector()-> |
1062 RecordSlot(code_slot, code_slot, *code_slot); | 1070 RecordSlot(code_slot, code_slot, *code_slot); |
1063 | 1071 |
1064 candidate = next_candidate; | 1072 candidate = next_candidate; |
1065 } | 1073 } |
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4354 while (buffer != NULL) { | 4362 while (buffer != NULL) { |
4355 SlotsBuffer* next_buffer = buffer->next(); | 4363 SlotsBuffer* next_buffer = buffer->next(); |
4356 DeallocateBuffer(buffer); | 4364 DeallocateBuffer(buffer); |
4357 buffer = next_buffer; | 4365 buffer = next_buffer; |
4358 } | 4366 } |
4359 *buffer_address = NULL; | 4367 *buffer_address = NULL; |
4360 } | 4368 } |
4361 | 4369 |
4362 | 4370 |
4363 } } // namespace v8::internal | 4371 } } // namespace v8::internal |
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