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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/accessors.h" | 7 #include "src/accessors.h" |
8 #include "src/api.h" | 8 #include "src/api.h" |
9 #include "src/base/platform/platform.h" | 9 #include "src/base/platform/platform.h" |
10 #include "src/bootstrapper.h" | 10 #include "src/bootstrapper.h" |
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848 | 848 |
849 void Deserializer::ReadData(Object** current, Object** limit, int source_space, | 849 void Deserializer::ReadData(Object** current, Object** limit, int source_space, |
850 Address current_object_address) { | 850 Address current_object_address) { |
851 Isolate* const isolate = isolate_; | 851 Isolate* const isolate = isolate_; |
852 // Write barrier support costs around 1% in startup time. In fact there | 852 // Write barrier support costs around 1% in startup time. In fact there |
853 // are no new space objects in current boot snapshots, so it's not needed, | 853 // are no new space objects in current boot snapshots, so it's not needed, |
854 // but that may change. | 854 // but that may change. |
855 bool write_barrier_needed = (current_object_address != NULL && | 855 bool write_barrier_needed = (current_object_address != NULL && |
856 source_space != NEW_SPACE && | 856 source_space != NEW_SPACE && |
857 source_space != CELL_SPACE && | 857 source_space != CELL_SPACE && |
858 source_space != PROPERTY_CELL_SPACE && | |
859 source_space != CODE_SPACE && | 858 source_space != CODE_SPACE && |
860 source_space != OLD_DATA_SPACE); | 859 source_space != OLD_DATA_SPACE); |
861 while (current < limit) { | 860 while (current < limit) { |
862 byte data = source_.Get(); | 861 byte data = source_.Get(); |
863 switch (data) { | 862 switch (data) { |
864 #define CASE_STATEMENT(where, how, within, space_number) \ | 863 #define CASE_STATEMENT(where, how, within, space_number) \ |
865 case where + how + within + space_number: \ | 864 case where + how + within + space_number: \ |
866 STATIC_ASSERT((where & ~kPointedToMask) == 0); \ | 865 STATIC_ASSERT((where & ~kPointedToMask) == 0); \ |
867 STATIC_ASSERT((how & ~kHowToCodeMask) == 0); \ | 866 STATIC_ASSERT((how & ~kHowToCodeMask) == 0); \ |
868 STATIC_ASSERT((within & ~kWhereToPointMask) == 0); \ | 867 STATIC_ASSERT((within & ~kWhereToPointMask) == 0); \ |
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961 // write barrier handling) and handles the other spaces with 8 fall-through | 960 // write barrier handling) and handles the other spaces with 8 fall-through |
962 // cases and one body. | 961 // cases and one body. |
963 #define ALL_SPACES(where, how, within) \ | 962 #define ALL_SPACES(where, how, within) \ |
964 CASE_STATEMENT(where, how, within, NEW_SPACE) \ | 963 CASE_STATEMENT(where, how, within, NEW_SPACE) \ |
965 CASE_BODY(where, how, within, NEW_SPACE) \ | 964 CASE_BODY(where, how, within, NEW_SPACE) \ |
966 CASE_STATEMENT(where, how, within, OLD_DATA_SPACE) \ | 965 CASE_STATEMENT(where, how, within, OLD_DATA_SPACE) \ |
967 CASE_STATEMENT(where, how, within, OLD_POINTER_SPACE) \ | 966 CASE_STATEMENT(where, how, within, OLD_POINTER_SPACE) \ |
968 CASE_STATEMENT(where, how, within, CODE_SPACE) \ | 967 CASE_STATEMENT(where, how, within, CODE_SPACE) \ |
969 CASE_STATEMENT(where, how, within, MAP_SPACE) \ | 968 CASE_STATEMENT(where, how, within, MAP_SPACE) \ |
970 CASE_STATEMENT(where, how, within, CELL_SPACE) \ | 969 CASE_STATEMENT(where, how, within, CELL_SPACE) \ |
971 CASE_STATEMENT(where, how, within, PROPERTY_CELL_SPACE) \ | |
972 CASE_STATEMENT(where, how, within, LO_SPACE) \ | 970 CASE_STATEMENT(where, how, within, LO_SPACE) \ |
973 CASE_BODY(where, how, within, kAnyOldSpace) | 971 CASE_BODY(where, how, within, kAnyOldSpace) |
974 | 972 |
975 #define FOUR_CASES(byte_code) \ | 973 #define FOUR_CASES(byte_code) \ |
976 case byte_code: \ | 974 case byte_code: \ |
977 case byte_code + 1: \ | 975 case byte_code + 1: \ |
978 case byte_code + 2: \ | 976 case byte_code + 2: \ |
979 case byte_code + 3: | 977 case byte_code + 3: |
980 | 978 |
981 #define SIXTEEN_CASES(byte_code) \ | 979 #define SIXTEEN_CASES(byte_code) \ |
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2560 DisallowHeapAllocation no_gc; | 2558 DisallowHeapAllocation no_gc; |
2561 SerializedCodeData* scd = new SerializedCodeData(cached_data); | 2559 SerializedCodeData* scd = new SerializedCodeData(cached_data); |
2562 SanityCheckResult r = scd->SanityCheck(isolate, source); | 2560 SanityCheckResult r = scd->SanityCheck(isolate, source); |
2563 if (r == CHECK_SUCCESS) return scd; | 2561 if (r == CHECK_SUCCESS) return scd; |
2564 cached_data->Reject(); | 2562 cached_data->Reject(); |
2565 source->GetIsolate()->counters()->code_cache_reject_reason()->AddSample(r); | 2563 source->GetIsolate()->counters()->code_cache_reject_reason()->AddSample(r); |
2566 delete scd; | 2564 delete scd; |
2567 return NULL; | 2565 return NULL; |
2568 } | 2566 } |
2569 } } // namespace v8::internal | 2567 } } // namespace v8::internal |
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