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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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| 283 if (FLAG_watch_ic_patching) { | 283 if (FLAG_watch_ic_patching) { |
| 284 int ticks = function->shared()->profiler_ticks(); | 284 int ticks = function->shared()->profiler_ticks(); |
| 285 | 285 |
| 286 if (ticks >= kProfilerTicksBeforeOptimization) { | 286 if (ticks >= kProfilerTicksBeforeOptimization) { |
| 287 int typeinfo, total, percentage; | 287 int typeinfo, total, percentage; |
| 288 GetICCounts(function, &typeinfo, &total, &percentage); | 288 GetICCounts(function, &typeinfo, &total, &percentage); |
| 289 if (percentage >= FLAG_type_info_threshold) { | 289 if (percentage >= FLAG_type_info_threshold) { |
| 290 // If this particular function hasn't had any ICs patched for enough | 290 // If this particular function hasn't had any ICs patched for enough |
| 291 // ticks, optimize it now. | 291 // ticks, optimize it now. |
| 292 Optimize(function, "hot and stable"); | 292 Optimize(function, "hot and stable"); |
| 293 } else if (ticks >= 100) { |
| 294 // If this function does not have enough type info, but has |
| 295 // seen a huge number of ticks, optimize it as it is. |
| 296 Optimize(function, "not much type info but very hot"); |
| 293 } else { | 297 } else { |
| 298 function->shared()->set_profiler_ticks(ticks + 1); |
| 294 if (FLAG_trace_opt_verbose) { | 299 if (FLAG_trace_opt_verbose) { |
| 295 PrintF("[not yet optimizing "); | 300 PrintF("[not yet optimizing "); |
| 296 function->PrintName(); | 301 function->PrintName(); |
| 297 PrintF(", not enough type info: %d/%d (%d%%)]\n", | 302 PrintF(", not enough type info: %d/%d (%d%%)]\n", |
| 298 typeinfo, total, percentage); | 303 typeinfo, total, percentage); |
| 299 } | 304 } |
| 300 } | 305 } |
| 301 } else if (!any_ic_changed_ && | 306 } else if (!any_ic_changed_ && |
| 302 function->shared()->code()->instruction_size() < kMaxSizeEarlyOpt) { | 307 function->shared()->code()->instruction_size() < kMaxSizeEarlyOpt) { |
| 303 // If no IC was patched since the last tick and this function is very | 308 // If no IC was patched since the last tick and this function is very |
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| 467 | 472 |
| 468 bool RuntimeProfilerRateLimiter::SuspendIfNecessary() { | 473 bool RuntimeProfilerRateLimiter::SuspendIfNecessary() { |
| 469 if (!RuntimeProfiler::IsSomeIsolateInJS()) { | 474 if (!RuntimeProfiler::IsSomeIsolateInJS()) { |
| 470 return RuntimeProfiler::WaitForSomeIsolateToEnterJS(); | 475 return RuntimeProfiler::WaitForSomeIsolateToEnterJS(); |
| 471 } | 476 } |
| 472 return false; | 477 return false; |
| 473 } | 478 } |
| 474 | 479 |
| 475 | 480 |
| 476 } } // namespace v8::internal | 481 } } // namespace v8::internal |
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