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8031320: Use Intel RTM instructions for locks

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Use RTM for inflated locks and stack locks.

Reviewed-by: iveresov, twisti, roland, dcubed
This commit is contained in:
Vladimir Kozlov 2014-03-20 17:49:27 -07:00
parent 315e4838e9
commit 97a51c5c2a
46 changed files with 1251 additions and 87 deletions
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16
hotspot/src/share/vm/ci/ciEnv.cpp
View file

@ -961,7 +961,8 @@ void ciEnv::register_method(ciMethod* target,
AbstractCompiler* compiler,
int comp_level,
bool has_unsafe_access,
bool has_wide_vectors) {
bool has_wide_vectors,
RTMState rtm_state) {
VM_ENTRY_MARK;
nmethod* nm = NULL;
{
@ -1002,6 +1003,15 @@ void ciEnv::register_method(ciMethod* target,
methodHandle method(THREAD, target->get_Method());
#if INCLUDE_RTM_OPT
if (!failing() && (rtm_state != NoRTM) &&
(method()->method_data() != NULL) &&
(method()->method_data()->rtm_state() != rtm_state)) {
// Preemptive decompile if rtm state was changed.
record_failure("RTM state change invalidated rtm code");
}
#endif
if (failing()) {
// While not a true deoptimization, it is a preemptive decompile.
MethodData* mdo = method()->method_data();
@ -1028,7 +1038,9 @@ void ciEnv::register_method(ciMethod* target,
frame_words, oop_map_set,
handler_table, inc_table,
compiler, comp_level);
#if INCLUDE_RTM_OPT
nm->set_rtm_state(rtm_state);
#endif
// Free codeBlobs
code_buffer->free_blob();