--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/gc/shenandoah/shenandoahTraversalMode.cpp Thu Oct 17 20:53:35 2019 +0100
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2019, Red Hat, Inc. All rights reserved.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "gc/shenandoah/shenandoahTraversalMode.hpp"
+#include "gc/shenandoah/heuristics/shenandoahTraversalAggressiveHeuristics.hpp"
+#include "gc/shenandoah/heuristics/shenandoahTraversalHeuristics.hpp"
+#include "logging/log.hpp"
+#include "logging/logTag.hpp"
+
+void ShenandoahTraversalMode::initialize_flags() const {
+ FLAG_SET_DEFAULT(ShenandoahSATBBarrier, false);
+ FLAG_SET_DEFAULT(ShenandoahStoreValEnqueueBarrier, true);
+ FLAG_SET_DEFAULT(ShenandoahKeepAliveBarrier, false);
+ FLAG_SET_DEFAULT(ShenandoahAllowMixedAllocs, false);
+
+ SHENANDOAH_ERGO_ENABLE_FLAG(ExplicitGCInvokesConcurrent);
+ SHENANDOAH_ERGO_ENABLE_FLAG(ShenandoahImplicitGCInvokesConcurrent);
+
+ // Final configuration checks
+ SHENANDOAH_CHECK_FLAG_SET(ShenandoahLoadRefBarrier);
+ SHENANDOAH_CHECK_FLAG_SET(ShenandoahStoreValEnqueueBarrier);
+ SHENANDOAH_CHECK_FLAG_SET(ShenandoahCASBarrier);
+ SHENANDOAH_CHECK_FLAG_SET(ShenandoahCloneBarrier);
+}
+
+ShenandoahHeuristics* ShenandoahTraversalMode::initialize_heuristics() const {
+ if (ShenandoahGCHeuristics != NULL) {
+ if (strcmp(ShenandoahGCHeuristics, "adaptive") == 0) {
+ return new ShenandoahTraversalHeuristics();
+ } else if (strcmp(ShenandoahGCHeuristics, "aggressive") == 0) {
+ return new ShenandoahTraversalAggressiveHeuristics();
+ } else {
+ vm_exit_during_initialization("Unknown -XX:ShenandoahGCHeuristics option");
+ }
+ }
+ ShouldNotReachHere();
+ return NULL;
+}