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comparison src/share/vm/oops/method.hpp @ 20489:966205f0e717

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8058564: Tiered compilation performance drop in PIT Summary: Ensure MethodCounters are created before method is enqueued for compilation Reviewed-by: kvn, drchase, jiangli, roland
author iveresov
date Fri, 19 Sep 2014 11:53:58 -0700
parents 7301840ea20e
children 3c87c13918fb
comparison
equal deleted inserted replaced
20488:9c8439756c05 20489:966205f0e717
363 363
364 MethodCounters* method_counters() const { 364 MethodCounters* method_counters() const {
365 return _method_counters; 365 return _method_counters;
366 } 366 }
367 367
368 void set_method_counters(MethodCounters* counters) { 368 void clear_method_counters() {
369 // The store into method must be released. On platforms without 369 _method_counters = NULL;
370 // total store order (TSO) the reference may become visible before 370 }
371 // the initialization of data otherwise. 371
372 OrderAccess::release_store_ptr((volatile void *)&_method_counters, counters); 372 bool init_method_counters(MethodCounters* counters) {
373 // Try to install a pointer to MethodCounters, return true on success.
374 return Atomic::cmpxchg_ptr(counters, (volatile void*)&_method_counters, NULL) == NULL;
373 } 375 }
374 376
375 #ifdef TIERED 377 #ifdef TIERED
376 // We are reusing interpreter_invocation_count as a holder for the previous event count! 378 // We are reusing interpreter_invocation_count as a holder for the previous event count!
377 // We can do that since interpreter_invocation_count is not used in tiered. 379 // We can do that since interpreter_invocation_count is not used in tiered.