< prev index next > src/hotspot/share/gc/shared/barrierSetNMethod.cpp
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if (!bs_nm->is_armed(nm)) {
return 0;
}
assert(!nm->is_osr_method(), "Should not reach here");
+ log_trace(nmethod, barrier)("Running nmethod entry barrier: %d " PTR_FORMAT, nm->compile_id(), p2i(nm));
// Called upon first entry after being armed
bool may_enter = bs_nm->nmethod_entry_barrier(nm);
// In case a concurrent thread disarmed the nmethod, we need to ensure the new instructions
// are made visible, by using a cross modify fence. Note that this is synchronous cross modifying
if (Atomic::add(&counter, 1u) % 3 == 0) {
may_enter = false;
}
}
! if (!may_enter) {
log_trace(nmethod, barrier)("Deoptimizing nmethod: " PTR_FORMAT, p2i(nm));
bs_nm->deoptimize(nm, return_address_ptr);
}
return may_enter ? 0 : 1;
}
if (Atomic::add(&counter, 1u) % 3 == 0) {
may_enter = false;
}
}
! if (may_enter) {
+ nm->set_used();
+ } else {
log_trace(nmethod, barrier)("Deoptimizing nmethod: " PTR_FORMAT, p2i(nm));
bs_nm->deoptimize(nm, return_address_ptr);
}
return may_enter ? 0 : 1;
}
if (!is_armed(nm)) {
return true;
}
assert(nm->is_osr_method(), "Should not reach here");
! log_trace(nmethod, barrier)("Running osr nmethod entry barrier: " PTR_FORMAT, p2i(nm));
bool result = nmethod_entry_barrier(nm);
OrderAccess::cross_modify_fence();
return result;
}
if (!is_armed(nm)) {
return true;
}
assert(nm->is_osr_method(), "Should not reach here");
! log_trace(nmethod, barrier)("Running osr nmethod entry barrier: %d " PTR_FORMAT, nm->compile_id(), p2i(nm));
bool result = nmethod_entry_barrier(nm);
+ if (result) {
+ nm->set_used();
+ }
OrderAccess::cross_modify_fence();
return result;
}
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