--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.hpp Mon Dec 10 15:47:44 2018 +0100
@@ -0,0 +1,126 @@
+/*
+ * Copyright (c) 2015, 2018, 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.
+ *
+ */
+
+#ifndef SHARE_VM_GC_SHENANDOAH_SHENANDOAHROOTPROCESSOR_HPP
+#define SHARE_VM_GC_SHENANDOAH_SHENANDOAHROOTPROCESSOR_HPP
+
+#include "code/codeCache.hpp"
+#include "gc/shared/oopStorageParState.hpp"
+#include "gc/shenandoah/shenandoahCodeRoots.hpp"
+#include "gc/shenandoah/shenandoahHeap.hpp"
+#include "gc/shenandoah/shenandoahPhaseTimings.hpp"
+#include "gc/shared/strongRootsScope.hpp"
+#include "gc/shared/workgroup.hpp"
+#include "memory/allocation.hpp"
+#include "memory/iterator.hpp"
+
+class ParallelCLDRootIterator {
+public:
+ ParallelCLDRootIterator();
+ void root_cld_do(CLDClosure* strong, CLDClosure* weak);
+};
+
+enum Shenandoah_process_roots_tasks {
+ SHENANDOAH_RP_PS_Universe_oops_do,
+ SHENANDOAH_RP_PS_JNIHandles_oops_do,
+ SHENANDOAH_RP_PS_JNIHandles_weak_oops_do,
+ SHENANDOAH_RP_PS_ObjectSynchronizer_oops_do,
+ SHENANDOAH_RP_PS_Management_oops_do,
+ SHENANDOAH_RP_PS_SystemDictionary_oops_do,
+ SHENANDOAH_RP_PS_jvmti_oops_do,
+ // Leave this one last.
+ SHENANDOAH_RP_PS_NumElements
+};
+
+class ShenandoahRootProcessor : public StackObj {
+ SubTasksDone* _process_strong_tasks;
+ StrongRootsScope _srs;
+ OopStorage::ParState<false, false> _par_state_string;
+ ShenandoahPhaseTimings::Phase _phase;
+ ParallelCLDRootIterator _cld_iterator;
+ ShenandoahAllCodeRootsIterator _coderoots_all_iterator;
+ CodeBlobClosure* _threads_nmethods_cl;
+
+ void process_java_roots(OopClosure* scan_non_heap_roots,
+ CLDClosure* scan_strong_clds,
+ CLDClosure* scan_weak_clds,
+ CodeBlobClosure* scan_strong_code,
+ ThreadClosure* thread_cl,
+ uint worker_i);
+
+ void process_vm_roots(OopClosure* scan_non_heap_roots,
+ OopClosure* scan_non_heap_weak_roots,
+ OopClosure* weak_jni_roots,
+ uint worker_i);
+
+public:
+ ShenandoahRootProcessor(ShenandoahHeap* heap, uint n_workers,
+ ShenandoahPhaseTimings::Phase phase);
+ ~ShenandoahRootProcessor();
+
+ // Apply oops, clds and blobs to all strongly reachable roots in the system
+ void process_strong_roots(OopClosure* oops, OopClosure* weak_oops,
+ CLDClosure* clds,
+ CLDClosure* weak_clds,
+ CodeBlobClosure* blobs,
+ ThreadClosure* thread_cl,
+ uint worker_id);
+
+ // Apply oops, clds and blobs to strongly and weakly reachable roots in the system
+ void process_all_roots(OopClosure* oops, OopClosure* weak_oops,
+ CLDClosure* clds,
+ CodeBlobClosure* blobs,
+ ThreadClosure* thread_cl,
+ uint worker_id);
+
+ // For slow debug/verification code
+ void process_all_roots_slow(OopClosure* oops);
+
+ // Number of worker threads used by the root processor.
+ uint n_workers() const;
+};
+
+class ShenandoahRootEvacuator : public StackObj {
+ SubTasksDone* _evacuation_tasks;
+ StrongRootsScope _srs;
+ ShenandoahPhaseTimings::Phase _phase;
+ ShenandoahCsetCodeRootsIterator _coderoots_cset_iterator;
+
+ enum Shenandoah_evacuate_roots_tasks {
+ SHENANDOAH_EVAC_jvmti_oops_do,
+ // Leave this one last.
+ SHENANDOAH_EVAC_NumElements
+ };
+public:
+ ShenandoahRootEvacuator(ShenandoahHeap* heap, uint n_workers,
+ ShenandoahPhaseTimings::Phase phase);
+ ~ShenandoahRootEvacuator();
+
+ void process_evacuate_roots(OopClosure* oops,
+ CodeBlobClosure* blobs,
+ uint worker_id);
+
+ // Number of worker threads used by the root processor.
+ uint n_workers() const;
+};
+#endif // SHARE_VM_GC_SHENANDOAH_SHENANDOAHROOTPROCESSOR_HPP