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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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6
hotspot/src/share/vm/opto/graphKit.cpp
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@ -3151,10 +3151,14 @@ FastLockNode* GraphKit::shared_lock(Node* obj) {
Node* mem = reset_memory();
FastLockNode * flock = _gvn.transform(new (C) FastLockNode(0, obj, box) )->as_FastLock();
if (PrintPreciseBiasedLockingStatistics) {
if (UseBiasedLocking && PrintPreciseBiasedLockingStatistics) {
// Create the counters for this fast lock.
flock->create_lock_counter(sync_jvms()); // sync_jvms used to get current bci
}
// Create the rtm counters for this fast lock if needed.
flock->create_rtm_lock_counter(sync_jvms()); // sync_jvms used to get current bci
// Add monitor to debug info for the slow path. If we block inside the
// slow path and de-opt, we need the monitor hanging around
map()->push_monitor( flock );