14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "logging/log.hpp"
27 #include "memory/resourceArea.hpp"
28 #include "oops/klass.inline.hpp"
29 #include "oops/markOop.hpp"
30 #include "oops/oop.inline.hpp"
31 #include "runtime/atomic.hpp"
32 #include "runtime/basicLock.hpp"
33 #include "runtime/biasedLocking.hpp"
34 #include "runtime/task.hpp"
35 #include "runtime/threadSMR.hpp"
36 #include "runtime/vframe.hpp"
37 #include "runtime/vmThread.hpp"
38 #include "runtime/vm_operations.hpp"
39 #include "trace/tracing.hpp"
40
41 static bool _biased_locking_enabled = false;
42 BiasedLockingCounters BiasedLocking::_counters;
43
44 static GrowableArray<Handle>* _preserved_oop_stack = NULL;
45 static GrowableArray<markOop>* _preserved_mark_stack = NULL;
46
47 static void enable_biased_locking(InstanceKlass* k) {
48 k->set_prototype_header(markOopDesc::biased_locking_prototype());
49 }
50
51 class VM_EnableBiasedLocking: public VM_Operation {
52 private:
53 bool _is_cheap_allocated;
|
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "logging/log.hpp"
27 #include "memory/resourceArea.hpp"
28 #include "oops/klass.inline.hpp"
29 #include "oops/markOop.hpp"
30 #include "oops/oop.inline.hpp"
31 #include "runtime/atomic.hpp"
32 #include "runtime/basicLock.hpp"
33 #include "runtime/biasedLocking.hpp"
34 #include "runtime/handles.inline.hpp"
35 #include "runtime/task.hpp"
36 #include "runtime/threadSMR.hpp"
37 #include "runtime/vframe.hpp"
38 #include "runtime/vmThread.hpp"
39 #include "runtime/vm_operations.hpp"
40 #include "trace/tracing.hpp"
41
42 static bool _biased_locking_enabled = false;
43 BiasedLockingCounters BiasedLocking::_counters;
44
45 static GrowableArray<Handle>* _preserved_oop_stack = NULL;
46 static GrowableArray<markOop>* _preserved_mark_stack = NULL;
47
48 static void enable_biased_locking(InstanceKlass* k) {
49 k->set_prototype_header(markOopDesc::biased_locking_prototype());
50 }
51
52 class VM_EnableBiasedLocking: public VM_Operation {
53 private:
54 bool _is_cheap_allocated;
|