6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
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 #include "precompiled.hpp"
26 #include "gc/shenandoah/heuristics/shenandoahPassiveHeuristics.hpp"
27 #include "gc/shenandoah/mode/shenandoahPassiveMode.hpp"
28 #include "logging/log.hpp"
29 #include "logging/logTag.hpp"
30 #include "runtime/globals_extension.hpp"
31
32 void ShenandoahPassiveMode::initialize_flags() const {
33 // Do not allow concurrent cycles.
34 FLAG_SET_DEFAULT(ExplicitGCInvokesConcurrent, false);
35 FLAG_SET_DEFAULT(ShenandoahImplicitGCInvokesConcurrent, false);
36
37 // Passive runs with max speed for allocation, because GC is always STW
38 SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahPacing);
39
40 // No need for evacuation reserve with Full GC, only for Degenerated GC.
41 if (!ShenandoahDegeneratedGC) {
42 SHENANDOAH_ERGO_OVERRIDE_DEFAULT(ShenandoahEvacReserve, 0);
43 }
44
45 // Disable known barriers by default.
46 SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahLoadRefBarrier);
47 SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahSATBBarrier);
48 SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahIUBarrier);
49 SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahCASBarrier);
50 SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahCloneBarrier);
51 SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahNMethodBarrier);
52 SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahStackWatermarkBarrier);
53
54 // Final configuration checks
55 // No barriers are required to run.
56 }
57 ShenandoahHeuristics* ShenandoahPassiveMode::initialize_heuristics() const {
58 if (ShenandoahGCHeuristics != NULL) {
59 return new ShenandoahPassiveHeuristics();
60 }
61 ShouldNotReachHere();
62 return NULL;
63 }
|
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
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 #include "precompiled.hpp"
26 #include "gc/shenandoah/heuristics/shenandoahHeuristics.hpp"
27 #include "gc/shenandoah/heuristics/shenandoahPassiveHeuristics.hpp"
28 #include "gc/shenandoah/mode/shenandoahPassiveMode.hpp"
29 #include "logging/log.hpp"
30 #include "logging/logTag.hpp"
31
32 void ShenandoahPassiveMode::initialize_flags() const {
33 // Do not allow concurrent cycles.
34 FLAG_SET_DEFAULT(ExplicitGCInvokesConcurrent, false);
35 FLAG_SET_DEFAULT(ShenandoahImplicitGCInvokesConcurrent, false);
36
37 // Passive runs with max speed for allocation, because GC is always STW
38 SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahPacing);
39
40 // No need for evacuation reserve with Full GC, only for Degenerated GC.
41 if (!ShenandoahDegeneratedGC) {
42 SHENANDOAH_ERGO_OVERRIDE_DEFAULT(ShenandoahEvacReserve, 0);
43 }
44
45 // Disable known barriers by default.
46 SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahLoadRefBarrier);
47 SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahSATBBarrier);
48 SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahIUBarrier);
49 SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahCASBarrier);
50 SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahCloneBarrier);
51 SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahNMethodBarrier);
52 SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahStackWatermarkBarrier);
53
54 // Final configuration checks
55 // No barriers are required to run.
56 }
57 ShenandoahHeuristics* ShenandoahPassiveMode::initialize_heuristics(ShenandoahGeneration* generation) const {
58 if (ShenandoahGCHeuristics != NULL) {
59 return new ShenandoahPassiveHeuristics(generation);
60 }
61 ShouldNotReachHere();
62 return NULL;
63 }
|