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Issue 6639024: Get rid of distinction between below- and above-watermark in page allocation.... (Closed) Base URL: http://v8.googlecode.com/svn/branches/experimental/gc/
Patch Set: '' Created 9 years, 9 months ago
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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. 1 // Copyright 2006-2008 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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1114 ASSERT(code != NULL && code->contains(pc)); 1114 ASSERT(code != NULL && code->contains(pc));
1115 return code; 1115 return code;
1116 } 1116 }
1117 1117
1118 1118
1119 Code* PcToCodeCache::GcSafeFindCodeForPc(Address pc) { 1119 Code* PcToCodeCache::GcSafeFindCodeForPc(Address pc) {
1120 // Check if the pc points into a large object chunk. 1120 // Check if the pc points into a large object chunk.
1121 LargePage* large_page = Heap::lo_space()->FindPageContainingPc(pc); 1121 LargePage* large_page = Heap::lo_space()->FindPageContainingPc(pc);
1122 if (large_page != NULL) return GcSafeCastToCode(large_page->GetObject(), pc); 1122 if (large_page != NULL) return GcSafeCastToCode(large_page->GetObject(), pc);
1123 1123
1124 // Iterate through the 8K page until we reach the end or find an 1124 // Iterate through the page until we reach the end or find an object starting
1125 // object starting after the pc. 1125 // after the pc.
1126 Page* page = Page::FromAddress(pc); 1126 Page* page = Page::FromAddress(pc);
1127 HeapObjectIterator iterator(page, Heap::GcSafeSizeOfOldObjectFunction()); 1127 HeapObjectIterator iterator(page, Heap::GcSafeSizeOfOldObjectFunction());
1128 HeapObject* previous = NULL; 1128 HeapObject* previous = NULL;
1129 while (true) { 1129 while (true) {
1130 HeapObject* next = iterator.next(); 1130 HeapObject* next = iterator.Next();
1131 if (next == NULL || next->address() >= pc) { 1131 if (next == NULL || next->address() >= pc) {
1132 return GcSafeCastToCode(previous, pc); 1132 return GcSafeCastToCode(previous, pc);
1133 } 1133 }
1134 previous = next; 1134 previous = next;
1135 } 1135 }
1136 } 1136 }
1137 1137
1138 1138
1139 PcToCodeCache::PcToCodeCacheEntry* PcToCodeCache::GetCacheEntry(Address pc) { 1139 PcToCodeCache::PcToCodeCacheEntry* PcToCodeCache::GetCacheEntry(Address pc) {
1140 Counters::pc_to_code.Increment(); 1140 Counters::pc_to_code.Increment();
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1218 ZoneList<StackFrame*> list(10); 1218 ZoneList<StackFrame*> list(10);
1219 for (StackFrameIterator it; !it.done(); it.Advance()) { 1219 for (StackFrameIterator it; !it.done(); it.Advance()) {
1220 StackFrame* frame = AllocateFrameCopy(it.frame()); 1220 StackFrame* frame = AllocateFrameCopy(it.frame());
1221 list.Add(frame); 1221 list.Add(frame);
1222 } 1222 }
1223 return list.ToVector(); 1223 return list.ToVector();
1224 } 1224 }
1225 1225
1226 1226
1227 } } // namespace v8::internal 1227 } } // namespace v8::internal
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