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8049737: Contended Locking reorder and cache line bucket

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JEP-143/JDK-8046133 - optimization #1 - reorder and cache line bucket.

Co-authored-by: Dave Dice <dave.dice@oracle.com>
Co-authored-by: Karen Kinnear <karen.kinnear@oracle.com>
Reviewed-by: shade, dice, dholmes, dsimms
This commit is contained in:
Daniel D. Daugherty 2014-10-14 10:32:12 -07:00
parent 51866388d1
commit f1ab0fae73
13 changed files with 302 additions and 247 deletions
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15
hotspot/src/share/vm/runtime/objectMonitor.inline.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -40,15 +40,11 @@ inline void ObjectMonitor::set_header(markOop hdr) {
_header = hdr;
}
inline intptr_t ObjectMonitor::count() const {
inline jint ObjectMonitor::count() const {
return _count;
}
inline void ObjectMonitor::set_count(intptr_t count) {
_count= count;
}
inline intptr_t ObjectMonitor::waiters() const {
inline jint ObjectMonitor::waiters() const {
return _waiters;
}
@ -61,7 +57,7 @@ inline void ObjectMonitor::clear() {
assert(_count == 0, "Fatal logic error in ObjectMonitor count!");
assert(_waiters == 0, "Fatal logic error in ObjectMonitor waiters!");
assert(_recursions == 0, "Fatal logic error in ObjectMonitor recursions!");
assert(_object, "Fatal logic error in ObjectMonitor object!");
assert(_object != NULL, "Fatal logic error in ObjectMonitor object!");
assert(_owner == 0, "Fatal logic error in ObjectMonitor owner!");
_header = NULL;
@ -85,7 +81,6 @@ inline bool ObjectMonitor::check(TRAPS) {
if (THREAD != _owner) {
if (THREAD->is_lock_owned((address) _owner)) {
_owner = THREAD; // regain ownership of inflated monitor
OwnerIsThread = 1 ;
assert (_recursions == 0, "invariant") ;
} else {
check_slow(THREAD);
@ -97,7 +92,7 @@ inline bool ObjectMonitor::check(TRAPS) {
// return number of threads contending for this monitor
inline intptr_t ObjectMonitor::contentions() const {
inline jint ObjectMonitor::contentions() const {
return _count;
}