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src/hotspot/share/code/codeBehaviours.cpp


12  * accompanied this code).                                                                                                           
13  *                                                                                                                                   
14  * You should have received a copy of the GNU General Public License version                                                         
15  * 2 along with this work; if not, write to the Free Software Foundation,                                                            
16  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.                                                                     
17  *                                                                                                                                   
18  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA                                                           
19  * or visit www.oracle.com if you need additional information or have any                                                            
20  * questions.                                                                                                                        
21  *                                                                                                                                   
22  */                                                                                                                                  
23 
24 #include "precompiled.hpp"                                                                                                           
25 #include "code/codeBehaviours.hpp"                                                                                                   
26 #include "runtime/mutexLocker.hpp"                                                                                                   
27 #include "runtime/safepoint.hpp"                                                                                                     
28 
29 CompiledICProtectionBehaviour* CompiledICProtectionBehaviour::_current = NULL;                                                       
30 
31 bool DefaultICProtectionBehaviour::lock(CompiledMethod* method) {                                                                    
32   if (CompiledIC_lock->owned_by_self()) {                                                                                            
33     return false;                                                                                                                    
34   }                                                                                                                                  
35   CompiledIC_lock->lock();                                                                                                           
36   return true;                                                                                                                       
37 }                                                                                                                                    
38 
39 void DefaultICProtectionBehaviour::unlock(CompiledMethod* method) {                                                                  
40   CompiledIC_lock->unlock();                                                                                                         
41 }                                                                                                                                    
42 
43 bool DefaultICProtectionBehaviour::is_safe(CompiledMethod* method) {                                                                 
44   return SafepointSynchronize::is_at_safepoint() || CompiledIC_lock->owned_by_self();                                                
45 }                                                                                                                                    

12  * accompanied this code).
13  *
14  * You should have received a copy of the GNU General Public License version
15  * 2 along with this work; if not, write to the Free Software Foundation,
16  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17  *
18  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19  * or visit www.oracle.com if you need additional information or have any
20  * questions.
21  *
22  */
23 
24 #include "precompiled.hpp"
25 #include "code/codeBehaviours.hpp"
26 #include "runtime/mutexLocker.hpp"
27 #include "runtime/safepoint.hpp"
28 
29 CompiledICProtectionBehaviour* CompiledICProtectionBehaviour::_current = NULL;
30 
31 bool DefaultICProtectionBehaviour::lock(CompiledMethod* method) {
32   if (is_safe(method)) {
33     return false;
34   }
35   CompiledIC_lock->lock_without_safepoint_check();
36   return true;
37 }
38 
39 void DefaultICProtectionBehaviour::unlock(CompiledMethod* method) {
40   CompiledIC_lock->unlock();
41 }
42 
43 bool DefaultICProtectionBehaviour::is_safe(CompiledMethod* method) {
44   return SafepointSynchronize::is_at_safepoint() || CompiledIC_lock->owned_by_self();
45 }
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