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8057967: CallSite dependency tracking scales devastatingly poorly

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Reviewed-by: jrose, roland, plevart, shade
This commit is contained in:
Vladimir Ivanov 2015-04-17 18:17:06 +03:00
parent cb7a08139b
commit f98a23137c
12 changed files with 337 additions and 33 deletions
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7
hotspot/src/share/vm/code/codeCache.cpp
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@ -1067,8 +1067,11 @@ void CodeCache::flush_dependents_on(Handle call_site, Handle method_handle) {
int marked = 0;
{
MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag);
InstanceKlass* call_site_klass = InstanceKlass::cast(call_site->klass());
marked = call_site_klass->mark_dependent_nmethods(changes);
InstanceKlass* ctxk = MethodHandles::get_call_site_context(call_site());
if (ctxk == NULL) {
return; // No dependencies to invalidate yet.
}
marked = ctxk->mark_dependent_nmethods(changes);
}
if (marked > 0) {
// At least one nmethod has been marked for deoptimization