--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/gc/shenandoah/shenandoahUtils.hpp Mon Dec 10 15:47:44 2018 +0100
@@ -0,0 +1,178 @@
+/*
+ * Copyright (c) 2017, 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_SHENANDOAHUTILS_HPP
+#define SHARE_VM_GC_SHENANDOAHUTILS_HPP
+
+#include "jfr/jfrEvents.hpp"
+
+#include "gc/shared/gcCause.hpp"
+#include "gc/shared/isGCActiveMark.hpp"
+#include "gc/shared/suspendibleThreadSet.hpp"
+#include "gc/shared/gcVMOperations.hpp"
+#include "gc/shenandoah/shenandoahPhaseTimings.hpp"
+#include "gc/shenandoah/shenandoahThreadLocalData.hpp"
+#include "memory/allocation.hpp"
+#include "runtime/safepoint.hpp"
+#include "runtime/vmThread.hpp"
+#include "runtime/vmOperations.hpp"
+#include "services/memoryService.hpp"
+
+class GCTimer;
+class GCTracer;
+
+class ShenandoahGCSession : public StackObj {
+private:
+ ShenandoahHeap* const _heap;
+ GCTimer* const _timer;
+ GCTracer* const _tracer;
+
+ TraceMemoryManagerStats _trace_cycle;
+public:
+ ShenandoahGCSession(GCCause::Cause cause);
+ ~ShenandoahGCSession();
+};
+
+class ShenandoahGCPhase : public StackObj {
+private:
+ static const ShenandoahPhaseTimings::Phase _invalid_phase = ShenandoahPhaseTimings::_num_phases;
+ static ShenandoahPhaseTimings::Phase _current_phase;
+
+ ShenandoahHeap* const _heap;
+ const ShenandoahPhaseTimings::Phase _phase;
+ ShenandoahPhaseTimings::Phase _parent_phase;
+public:
+ ShenandoahGCPhase(ShenandoahPhaseTimings::Phase phase);
+ ~ShenandoahGCPhase();
+
+ static ShenandoahPhaseTimings::Phase current_phase() { return _current_phase; }
+
+ static bool is_valid_phase(ShenandoahPhaseTimings::Phase phase);
+ static bool is_current_phase_valid() { return is_valid_phase(current_phase()); }
+ static bool is_root_work_phase();
+};
+
+// Aggregates all the things that should happen before/after the pause.
+class ShenandoahGCPauseMark : public StackObj {
+private:
+ ShenandoahHeap* const _heap;
+ const GCIdMark _gc_id_mark;
+ const SvcGCMarker _svc_gc_mark;
+ const IsGCActiveMark _is_gc_active_mark;
+ TraceMemoryManagerStats _trace_pause;
+
+public:
+ ShenandoahGCPauseMark(uint gc_id, SvcGCMarker::reason_type type);
+ ~ShenandoahGCPauseMark();
+};
+
+class ShenandoahAllocTrace : public StackObj {
+private:
+ double _start;
+ size_t _size;
+ ShenandoahAllocRequest::Type _alloc_type;
+public:
+ ShenandoahAllocTrace(size_t words_size, ShenandoahAllocRequest::Type alloc_type);
+ ~ShenandoahAllocTrace();
+};
+
+class ShenandoahSafepoint : public AllStatic {
+public:
+ // check if Shenandoah GC safepoint is in progress
+ static inline bool is_at_shenandoah_safepoint() {
+ if (!SafepointSynchronize::is_at_safepoint()) return false;
+
+ VM_Operation* vm_op = VMThread::vm_operation();
+ if (vm_op == NULL) return false;
+
+ VM_Operation::VMOp_Type type = vm_op->type();
+ return type == VM_Operation::VMOp_ShenandoahInitMark ||
+ type == VM_Operation::VMOp_ShenandoahFinalMarkStartEvac ||
+ type == VM_Operation::VMOp_ShenandoahFinalEvac ||
+ type == VM_Operation::VMOp_ShenandoahInitTraversalGC ||
+ type == VM_Operation::VMOp_ShenandoahFinalTraversalGC ||
+ type == VM_Operation::VMOp_ShenandoahInitUpdateRefs ||
+ type == VM_Operation::VMOp_ShenandoahFinalUpdateRefs ||
+ type == VM_Operation::VMOp_ShenandoahFullGC ||
+ type == VM_Operation::VMOp_ShenandoahDegeneratedGC;
+ }
+};
+
+class ShenandoahWorkerSession : public StackObj {
+protected:
+ uint _worker_id;
+
+ ShenandoahWorkerSession(uint worker_id);
+ ~ShenandoahWorkerSession();
+public:
+ static inline uint worker_id() {
+ Thread* thr = Thread::current();
+ uint id = ShenandoahThreadLocalData::worker_id(thr);
+ assert(id != ShenandoahThreadLocalData::INVALID_WORKER_ID, "Worker session has not been created");
+ return id;
+ }
+};
+
+class ShenandoahConcurrentWorkerSession : public ShenandoahWorkerSession {
+private:
+ EventGCPhaseConcurrent _event;
+
+public:
+ ShenandoahConcurrentWorkerSession(uint worker_id) : ShenandoahWorkerSession(worker_id) { }
+ ~ShenandoahConcurrentWorkerSession();
+};
+
+class ShenandoahParallelWorkerSession : public ShenandoahWorkerSession {
+private:
+ EventGCPhaseParallel _event;
+
+public:
+ ShenandoahParallelWorkerSession(uint worker_id) : ShenandoahWorkerSession(worker_id) { }
+ ~ShenandoahParallelWorkerSession();
+};
+
+class ShenandoahSuspendibleThreadSetJoiner {
+private:
+ SuspendibleThreadSetJoiner _joiner;
+public:
+ ShenandoahSuspendibleThreadSetJoiner(bool active = true) : _joiner(active) {
+ assert(!ShenandoahThreadLocalData::is_evac_allowed(Thread::current()), "STS should be joined before evac scope");
+ }
+ ~ShenandoahSuspendibleThreadSetJoiner() {
+ assert(!ShenandoahThreadLocalData::is_evac_allowed(Thread::current()), "STS should be left after evac scope");
+ }
+};
+
+class ShenandoahSuspendibleThreadSetLeaver {
+private:
+ SuspendibleThreadSetLeaver _leaver;
+public:
+ ShenandoahSuspendibleThreadSetLeaver(bool active = true) : _leaver(active) {
+ assert(!ShenandoahThreadLocalData::is_evac_allowed(Thread::current()), "STS should be left after evac scope");
+ }
+ ~ShenandoahSuspendibleThreadSetLeaver() {
+ assert(!ShenandoahThreadLocalData::is_evac_allowed(Thread::current()), "STS should be joined before evac scope");
+ }
+};
+
+#endif // SHARE_VM_GC_SHENANDOAHUTILS_HPP