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src/hotspot/share/gc/shenandoah/shenandoahEvacOOMHandler.inline.hpp

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 9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
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 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHEVACOOMHANDLER_INLINE_HPP
26 #define SHARE_GC_SHENANDOAH_SHENANDOAHEVACOOMHANDLER_INLINE_HPP
27 
28 #include "gc/shenandoah/shenandoahEvacOOMHandler.hpp"
29 
30 #include "gc/shenandoah/shenandoahHeap.inline.hpp"
31 #include "gc/shenandoah/shenandoahThreadLocalData.hpp"
32 #include "runtime/atomic.hpp"
33 
34 jint ShenandoahEvacOOMCounter::load_acquire() {
35   return Atomic::load_acquire(&_bits);
36 }
37 
38 jint ShenandoahEvacOOMCounter::unmasked_count() {
39   return Atomic::load_acquire(&_bits) & ~OOM_MARKER_MASK;
40 }
41 
42 void ShenandoahEvacOOMHandler::enter_evacuation(Thread* thr) {
43   uint8_t level = ShenandoahThreadLocalData::push_evac_oom_scope(thr);
44  if (level == 0) {
45    // Entering top level scope, register this thread.
46    register_thread(thr);
47  } else if (!ShenandoahThreadLocalData::is_oom_during_evac(thr)) {
48    ShenandoahEvacOOMCounter* counter = counter_for_thread(thr);
49    jint threads_in_evac = counter->load_acquire();

 9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
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 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHEVACOOMHANDLER_INLINE_HPP
26 #define SHARE_GC_SHENANDOAH_SHENANDOAHEVACOOMHANDLER_INLINE_HPP
27 
28 #include "gc/shenandoah/shenandoahEvacOOMHandler.hpp"

29 #include "gc/shenandoah/shenandoahHeap.inline.hpp"
30 #include "gc/shenandoah/shenandoahThreadLocalData.hpp"
31 #include "runtime/atomic.hpp"
32 
33 jint ShenandoahEvacOOMCounter::load_acquire() {
34   return Atomic::load_acquire(&_bits);
35 }
36 
37 jint ShenandoahEvacOOMCounter::unmasked_count() {
38   return Atomic::load_acquire(&_bits) & ~OOM_MARKER_MASK;
39 }
40 
41 void ShenandoahEvacOOMHandler::enter_evacuation(Thread* thr) {
42   uint8_t level = ShenandoahThreadLocalData::push_evac_oom_scope(thr);
43  if (level == 0) {
44    // Entering top level scope, register this thread.
45    register_thread(thr);
46  } else if (!ShenandoahThreadLocalData::is_oom_during_evac(thr)) {
47    ShenandoahEvacOOMCounter* counter = counter_for_thread(thr);
48    jint threads_in_evac = counter->load_acquire();
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