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8032463: VirtualDispatch test timeout with DeoptimizeALot

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Introduce code aging for warm method detection

Reviewed-by: kvn, twisti
This commit is contained in:
Igor Veresov 2014-05-13 11:32:10 -07:00
parent 5938d3d5b9
commit 54db2c2d61
27 changed files with 283 additions and 69 deletions
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9
hotspot/src/share/vm/ci/ciMethod.cpp
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@ -129,6 +129,7 @@ ciMethod::ciMethod(methodHandle h_m) : ciMetadata(h_m()) {
constantPoolHandle cpool = h_m()->constants();
_signature = new (env->arena()) ciSignature(_holder, cpool, sig_symbol);
_method_data = NULL;
_nmethod_age = h_m()->nmethod_age();
// Take a snapshot of these values, so they will be commensurate with the MDO.
if (ProfileInterpreter || TieredCompilation) {
int invcnt = h_m()->interpreter_invocation_count();
@ -1275,6 +1276,14 @@ bool ciMethod::check_call(int refinfo_index, bool is_static) const {
return false;
}
// ------------------------------------------------------------------
// ciMethod::profile_aging
//
// Should the method be compiled with an age counter?
bool ciMethod::profile_aging() const {
return UseCodeAging && (!MethodCounters::is_nmethod_hot(nmethod_age()) &&
!MethodCounters::is_nmethod_age_unset(nmethod_age()));
}
// ------------------------------------------------------------------
// ciMethod::print_codes
//