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Issue 11141023: Switch code flushing to use different JSFunction field. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 8 years, 2 months ago
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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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2247 2247
2248 // Since we don't store the source we should never optimize this. 2248 // Since we don't store the source we should never optimize this.
2249 target_shared->code()->set_optimizable(false); 2249 target_shared->code()->set_optimizable(false);
2250 2250
2251 // Clear the optimization hints related to the compiled code as these 2251 // Clear the optimization hints related to the compiled code as these
2252 // are no longer valid when the code is overwritten. 2252 // are no longer valid when the code is overwritten.
2253 target_shared->ClearThisPropertyAssignmentsInfo(); 2253 target_shared->ClearThisPropertyAssignmentsInfo();
2254 2254
2255 // Set the code of the target function. 2255 // Set the code of the target function.
2256 target->ReplaceCode(source_shared->code()); 2256 target->ReplaceCode(source_shared->code());
2257 ASSERT(target->next_function_link()->IsUndefined());
2257 2258
2258 // Make sure we get a fresh copy of the literal vector to avoid cross 2259 // Make sure we get a fresh copy of the literal vector to avoid cross
2259 // context contamination. 2260 // context contamination.
2260 Handle<Context> context(source->context()); 2261 Handle<Context> context(source->context());
2261 int number_of_literals = source->NumberOfLiterals(); 2262 int number_of_literals = source->NumberOfLiterals();
2262 Handle<FixedArray> literals = 2263 Handle<FixedArray> literals =
2263 isolate->factory()->NewFixedArray(number_of_literals, TENURED); 2264 isolate->factory()->NewFixedArray(number_of_literals, TENURED);
2264 if (number_of_literals > 0) { 2265 if (number_of_literals > 0) {
2265 literals->set(JSFunction::kLiteralNativeContextIndex, 2266 literals->set(JSFunction::kLiteralNativeContextIndex,
2266 context->native_context()); 2267 context->native_context());
2267 } 2268 }
2268 target->set_context(*context); 2269 target->set_context(*context);
2269 target->set_literals(*literals); 2270 target->set_literals(*literals);
2270 target->set_next_function_link(isolate->heap()->undefined_value());
2271 2271
2272 if (isolate->logger()->is_logging_code_events() || 2272 if (isolate->logger()->is_logging_code_events() ||
2273 CpuProfiler::is_profiling(isolate)) { 2273 CpuProfiler::is_profiling(isolate)) {
2274 isolate->logger()->LogExistingFunction( 2274 isolate->logger()->LogExistingFunction(
2275 source_shared, Handle<Code>(source_shared->code())); 2275 source_shared, Handle<Code>(source_shared->code()));
2276 } 2276 }
2277 2277
2278 return *target; 2278 return *target;
2279 } 2279 }
2280 2280
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13279 // Handle last resort GC and make sure to allow future allocations 13279 // Handle last resort GC and make sure to allow future allocations
13280 // to grow the heap without causing GCs (if possible). 13280 // to grow the heap without causing GCs (if possible).
13281 isolate->counters()->gc_last_resort_from_js()->Increment(); 13281 isolate->counters()->gc_last_resort_from_js()->Increment();
13282 isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags, 13282 isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags,
13283 "Runtime::PerformGC"); 13283 "Runtime::PerformGC");
13284 } 13284 }
13285 } 13285 }
13286 13286
13287 13287
13288 } } // namespace v8::internal 13288 } } // namespace v8::internal
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