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/shenandoahAdaptiveHeuristics.hpp"
27 #include "gc/shenandoah/heuristics/shenandoahAggressiveHeuristics.hpp"
28 #include "gc/shenandoah/heuristics/shenandoahCompactHeuristics.hpp"
29 #include "gc/shenandoah/heuristics/shenandoahStaticHeuristics.hpp"
30 #include "gc/shenandoah/mode/shenandoahIUMode.hpp"
31 #include "logging/log.hpp"
32 #include "logging/logTag.hpp"
33 #include "runtime/globals_extension.hpp"
34 #include "runtime/java.hpp"
35
36 void ShenandoahIUMode::initialize_flags() const {
37 if (FLAG_IS_CMDLINE(ClassUnloadingWithConcurrentMark) && ClassUnloading) {
38 log_warning(gc)("Shenandoah I-U mode sets -XX:-ClassUnloadingWithConcurrentMark; see JDK-8261341 for details");
39 }
40 FLAG_SET_DEFAULT(ClassUnloadingWithConcurrentMark, false);
41
42 if (ClassUnloading) {
43 FLAG_SET_DEFAULT(VerifyBeforeExit, false);
44 }
45
46 if (FLAG_IS_DEFAULT(ShenandoahIUBarrier)) {
47 FLAG_SET_DEFAULT(ShenandoahIUBarrier, true);
48 }
49 if (FLAG_IS_DEFAULT(ShenandoahSATBBarrier)) {
50 FLAG_SET_DEFAULT(ShenandoahSATBBarrier, false);
51 }
52
53 SHENANDOAH_ERGO_ENABLE_FLAG(ExplicitGCInvokesConcurrent);
54 SHENANDOAH_ERGO_ENABLE_FLAG(ShenandoahImplicitGCInvokesConcurrent);
55
56 // Final configuration checks
57 SHENANDOAH_CHECK_FLAG_SET(ShenandoahLoadRefBarrier);
58 SHENANDOAH_CHECK_FLAG_UNSET(ShenandoahSATBBarrier);
59 SHENANDOAH_CHECK_FLAG_SET(ShenandoahIUBarrier);
60 SHENANDOAH_CHECK_FLAG_SET(ShenandoahCASBarrier);
61 SHENANDOAH_CHECK_FLAG_SET(ShenandoahCloneBarrier);
62 SHENANDOAH_CHECK_FLAG_SET(ShenandoahStackWatermarkBarrier);
63 }
64
65 ShenandoahHeuristics* ShenandoahIUMode::initialize_heuristics() const {
66 if (ShenandoahGCHeuristics == nullptr) {
67 vm_exit_during_initialization("Unknown -XX:ShenandoahGCHeuristics option (null)");
68 }
69 if (strcmp(ShenandoahGCHeuristics, "aggressive") == 0) {
70 return new ShenandoahAggressiveHeuristics();
71 } else if (strcmp(ShenandoahGCHeuristics, "static") == 0) {
72 return new ShenandoahStaticHeuristics();
73 } else if (strcmp(ShenandoahGCHeuristics, "adaptive") == 0) {
74 return new ShenandoahAdaptiveHeuristics();
75 } else if (strcmp(ShenandoahGCHeuristics, "compact") == 0) {
76 return new ShenandoahCompactHeuristics();
77 }
78 vm_exit_during_initialization("Unknown -XX:ShenandoahGCHeuristics option");
79 return nullptr;
80 }
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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/mode/shenandoahIUMode.hpp"
28 #include "logging/log.hpp"
29 #include "logging/logTag.hpp"
30 #include "runtime/globals_extension.hpp"
31 #include "runtime/java.hpp"
32
33 void ShenandoahIUMode::initialize_flags() const {
34 if (FLAG_IS_CMDLINE(ClassUnloadingWithConcurrentMark) && ClassUnloading) {
35 log_warning(gc)("Shenandoah I-U mode sets -XX:-ClassUnloadingWithConcurrentMark; see JDK-8261341 for details");
36 }
37 FLAG_SET_DEFAULT(ClassUnloadingWithConcurrentMark, false);
38
39 if (ClassUnloading) {
40 FLAG_SET_DEFAULT(VerifyBeforeExit, false);
41 }
42
43 if (FLAG_IS_DEFAULT(ShenandoahIUBarrier)) {
44 FLAG_SET_DEFAULT(ShenandoahIUBarrier, true);
45 }
46 if (FLAG_IS_DEFAULT(ShenandoahSATBBarrier)) {
47 FLAG_SET_DEFAULT(ShenandoahSATBBarrier, false);
48 }
49
50 SHENANDOAH_ERGO_ENABLE_FLAG(ExplicitGCInvokesConcurrent);
51 SHENANDOAH_ERGO_ENABLE_FLAG(ShenandoahImplicitGCInvokesConcurrent);
52
53 // Final configuration checks
54 SHENANDOAH_CHECK_FLAG_SET(ShenandoahLoadRefBarrier);
55 SHENANDOAH_CHECK_FLAG_UNSET(ShenandoahSATBBarrier);
56 SHENANDOAH_CHECK_FLAG_SET(ShenandoahIUBarrier);
57 SHENANDOAH_CHECK_FLAG_SET(ShenandoahCASBarrier);
58 SHENANDOAH_CHECK_FLAG_SET(ShenandoahCloneBarrier);
59 SHENANDOAH_CHECK_FLAG_SET(ShenandoahStackWatermarkBarrier);
60 SHENANDOAH_CHECK_FLAG_UNSET(ShenandoahCardBarrier);
61 }
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