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8058564: Tiered compilation performance drop in PIT

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Ensure MethodCounters are created before method is enqueued for compilation

Reviewed-by: kvn, drchase, jiangli
This commit is contained in:
Igor Veresov 2014-09-17 21:15:03 -07:00
parent 964c442938
commit ad7e67c98f
4 changed files with 18 additions and 17 deletions
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12
hotspot/src/share/vm/oops/method.hpp
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@ -333,11 +333,13 @@ class Method : public Metadata {
return _method_counters;
}
void set_method_counters(MethodCounters* counters) {
// The store into method must be released. On platforms without
// total store order (TSO) the reference may become visible before
// the initialization of data otherwise.
OrderAccess::release_store_ptr((volatile void *)&_method_counters, counters);
void clear_method_counters() {
_method_counters = NULL;
}
bool init_method_counters(MethodCounters* counters) {
// Try to install a pointer to MethodCounters, return true on success.
return Atomic::cmpxchg_ptr(counters, (volatile void*)&_method_counters, NULL) == NULL;
}
#ifdef TIERED