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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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918 | 918 |
919 | 919 |
920 void NewSpace::Flip() { | 920 void NewSpace::Flip() { |
921 SemiSpace::Swap(&from_space_, &to_space_); | 921 SemiSpace::Swap(&from_space_, &to_space_); |
922 } | 922 } |
923 | 923 |
924 | 924 |
925 void NewSpace::Grow() { | 925 void NewSpace::Grow() { |
926 ASSERT(Capacity() < MaximumCapacity()); | 926 ASSERT(Capacity() < MaximumCapacity()); |
927 if (to_space_.Grow()) { | 927 if (to_space_.Grow()) { |
928 // Only grow from space if we managed to grow to space. | 928 // Only grow from space if we managed to grow to-space. |
929 if (!from_space_.Grow()) { | 929 if (!from_space_.Grow()) { |
930 // If we managed to grow to space but couldn't grow from space, | 930 // If we managed to grow to-space but couldn't grow from-space, |
931 // attempt to shrink to space. | 931 // attempt to shrink to-space. |
932 if (!to_space_.ShrinkTo(from_space_.Capacity())) { | 932 if (!to_space_.ShrinkTo(from_space_.Capacity())) { |
933 // We are in an inconsistent state because we could not | 933 // We are in an inconsistent state because we could not |
934 // commit/uncommit memory from new space. | 934 // commit/uncommit memory from new space. |
935 V8::FatalProcessOutOfMemory("Failed to grow new space."); | 935 V8::FatalProcessOutOfMemory("Failed to grow new space."); |
936 } | 936 } |
937 } | 937 } |
938 } | 938 } |
939 ASSERT_SEMISPACE_ALLOCATION_INFO(allocation_info_, to_space_); | 939 ASSERT_SEMISPACE_ALLOCATION_INFO(allocation_info_, to_space_); |
940 } | 940 } |
941 | 941 |
942 | 942 |
943 void NewSpace::Shrink() { | 943 void NewSpace::Shrink() { |
944 int new_capacity = Max(InitialCapacity(), 2 * SizeAsInt()); | 944 int new_capacity = Max(InitialCapacity(), 2 * SizeAsInt()); |
945 int rounded_new_capacity = | 945 int rounded_new_capacity = |
946 RoundUp(new_capacity, static_cast<int>(OS::AllocateAlignment())); | 946 RoundUp(new_capacity, static_cast<int>(OS::AllocateAlignment())); |
947 if (rounded_new_capacity < Capacity() && | 947 if (rounded_new_capacity < Capacity() && |
948 to_space_.ShrinkTo(rounded_new_capacity)) { | 948 to_space_.ShrinkTo(rounded_new_capacity)) { |
949 // Only shrink from space if we managed to shrink to space. | 949 // Only shrink from-space if we managed to shrink to-space. |
| 950 from_space_.Reset(); |
950 if (!from_space_.ShrinkTo(rounded_new_capacity)) { | 951 if (!from_space_.ShrinkTo(rounded_new_capacity)) { |
951 // If we managed to shrink to space but couldn't shrink from | 952 // If we managed to shrink to-space but couldn't shrink from |
952 // space, attempt to grow to space again. | 953 // space, attempt to grow to-space again. |
953 if (!to_space_.GrowTo(from_space_.Capacity())) { | 954 if (!to_space_.GrowTo(from_space_.Capacity())) { |
954 // We are in an inconsistent state because we could not | 955 // We are in an inconsistent state because we could not |
955 // commit/uncommit memory from new space. | 956 // commit/uncommit memory from new space. |
956 V8::FatalProcessOutOfMemory("Failed to shrink new space."); | 957 V8::FatalProcessOutOfMemory("Failed to shrink new space."); |
957 } | 958 } |
958 } | 959 } |
959 } | 960 } |
960 allocation_info_.limit = to_space_.page_high(); | 961 allocation_info_.limit = to_space_.page_high(); |
961 ASSERT_SEMISPACE_ALLOCATION_INFO(allocation_info_, to_space_); | 962 ASSERT_SEMISPACE_ALLOCATION_INFO(allocation_info_, to_space_); |
962 } | 963 } |
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2500 for (HeapObject* obj = obj_it.Next(); obj != NULL; obj = obj_it.Next()) { | 2501 for (HeapObject* obj = obj_it.Next(); obj != NULL; obj = obj_it.Next()) { |
2501 if (obj->IsCode()) { | 2502 if (obj->IsCode()) { |
2502 Code* code = Code::cast(obj); | 2503 Code* code = Code::cast(obj); |
2503 isolate->code_kind_statistics()[code->kind()] += code->Size(); | 2504 isolate->code_kind_statistics()[code->kind()] += code->Size(); |
2504 } | 2505 } |
2505 } | 2506 } |
2506 } | 2507 } |
2507 #endif // DEBUG | 2508 #endif // DEBUG |
2508 | 2509 |
2509 } } // namespace v8::internal | 2510 } } // namespace v8::internal |
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