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Issue 6480070: Merge revisions 6611, 6795, 6797 to the 3.0 branch... (Closed) Base URL: http://v8.googlecode.com/svn/branches/3.0/
Patch Set: Created 9 years, 10 months ago
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1 // Copyright 2010 the V8 project authors. All rights reserved. 1 // Copyright 2010 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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7030 JavaScriptFrameIterator it; 7030 JavaScriptFrameIterator it;
7031 JavaScriptFrame* frame = it.frame(); 7031 JavaScriptFrame* frame = it.frame();
7032 ASSERT(frame->function() == *function); 7032 ASSERT(frame->function() == *function);
7033 ASSERT(frame->code() == *unoptimized); 7033 ASSERT(frame->code() == *unoptimized);
7034 ASSERT(unoptimized->contains(frame->pc())); 7034 ASSERT(unoptimized->contains(frame->pc()));
7035 7035
7036 // Use linear search of the unoptimized code's stack check table to find 7036 // Use linear search of the unoptimized code's stack check table to find
7037 // the AST id matching the PC. 7037 // the AST id matching the PC.
7038 Address start = unoptimized->instruction_start(); 7038 Address start = unoptimized->instruction_start();
7039 unsigned target_pc_offset = static_cast<unsigned>(frame->pc() - start); 7039 unsigned target_pc_offset = static_cast<unsigned>(frame->pc() - start);
7040 Address table_cursor = start + unoptimized->stack_check_table_start(); 7040 Address table_cursor = start + unoptimized->stack_check_table_offset();
7041 uint32_t table_length = Memory::uint32_at(table_cursor); 7041 uint32_t table_length = Memory::uint32_at(table_cursor);
7042 table_cursor += kIntSize; 7042 table_cursor += kIntSize;
7043 for (unsigned i = 0; i < table_length; ++i) { 7043 for (unsigned i = 0; i < table_length; ++i) {
7044 // Table entries are (AST id, pc offset) pairs. 7044 // Table entries are (AST id, pc offset) pairs.
7045 uint32_t pc_offset = Memory::uint32_at(table_cursor + kIntSize); 7045 uint32_t pc_offset = Memory::uint32_at(table_cursor + kIntSize);
7046 if (pc_offset == target_pc_offset) { 7046 if (pc_offset == target_pc_offset) {
7047 ast_id = static_cast<int>(Memory::uint32_at(table_cursor)); 7047 ast_id = static_cast<int>(Memory::uint32_at(table_cursor));
7048 break; 7048 break;
7049 } 7049 }
7050 table_cursor += 2 * kIntSize; 7050 table_cursor += 2 * kIntSize;
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11062 } else { 11062 } else {
11063 // Handle last resort GC and make sure to allow future allocations 11063 // Handle last resort GC and make sure to allow future allocations
11064 // to grow the heap without causing GCs (if possible). 11064 // to grow the heap without causing GCs (if possible).
11065 Counters::gc_last_resort_from_js.Increment(); 11065 Counters::gc_last_resort_from_js.Increment();
11066 Heap::CollectAllGarbage(false); 11066 Heap::CollectAllGarbage(false);
11067 } 11067 }
11068 } 11068 }
11069 11069
11070 11070
11071 } } // namespace v8::internal 11071 } } // namespace v8::internal
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