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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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165 | 165 |
166 // We are not prepared to do OSR for a function that already has an | 166 // We are not prepared to do OSR for a function that already has an |
167 // allocated arguments object. The optimized code would bypass it for | 167 // allocated arguments object. The optimized code would bypass it for |
168 // arguments accesses, which is unsound. Don't try OSR. | 168 // arguments accesses, which is unsound. Don't try OSR. |
169 if (shared->uses_arguments()) return; | 169 if (shared->uses_arguments()) return; |
170 | 170 |
171 // We're using on-stack replacement: patch the unoptimized code so that | 171 // We're using on-stack replacement: patch the unoptimized code so that |
172 // any back edge in any unoptimized frame will trigger on-stack | 172 // any back edge in any unoptimized frame will trigger on-stack |
173 // replacement for that frame. | 173 // replacement for that frame. |
174 if (FLAG_trace_osr) { | 174 if (FLAG_trace_osr) { |
175 PrintF("[patching back edges in "); | 175 PrintF("[OSR - patching back edges in "); |
176 function->PrintName(); | 176 function->PrintName(); |
177 PrintF(" for on-stack replacement]\n"); | 177 PrintF("]\n"); |
178 } | 178 } |
179 | 179 |
180 Deoptimizer::PatchInterruptCode(isolate_, shared->code()); | 180 Deoptimizer::PatchInterruptCode(isolate_, shared->code()); |
181 } | 181 } |
182 | 182 |
183 | 183 |
184 void RuntimeProfiler::ClearSampleBuffer() { | 184 void RuntimeProfiler::ClearSampleBuffer() { |
185 memset(sampler_window_, 0, sizeof(sampler_window_)); | 185 memset(sampler_window_, 0, sizeof(sampler_window_)); |
186 memset(sampler_window_weight_, 0, sizeof(sampler_window_weight_)); | 186 memset(sampler_window_weight_, 0, sizeof(sampler_window_weight_)); |
187 } | 187 } |
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425 | 425 |
426 | 426 |
427 void RuntimeProfiler::UpdateSamplesAfterCompact(ObjectVisitor* visitor) { | 427 void RuntimeProfiler::UpdateSamplesAfterCompact(ObjectVisitor* visitor) { |
428 for (int i = 0; i < kSamplerWindowSize; i++) { | 428 for (int i = 0; i < kSamplerWindowSize; i++) { |
429 visitor->VisitPointer(&sampler_window_[i]); | 429 visitor->VisitPointer(&sampler_window_[i]); |
430 } | 430 } |
431 } | 431 } |
432 | 432 |
433 | 433 |
434 } } // namespace v8::internal | 434 } } // namespace v8::internal |
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