--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/jfr/recorder/checkpoint/jfrCheckpointManager.hpp Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * 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_JFR_RECORDER_CHECKPOINT_JFRCHECKPOINTMANAGER_HPP
+#define SHARE_VM_JFR_RECORDER_CHECKPOINT_JFRCHECKPOINTMANAGER_HPP
+
+#include "jfr/recorder/storage/jfrBuffer.hpp"
+#include "jfr/recorder/storage/jfrMemorySpace.hpp"
+#include "jfr/recorder/storage/jfrMemorySpaceRetrieval.hpp"
+#include "jfr/utilities/jfrTypes.hpp"
+
+class JfrCheckpointManager;
+class JfrChunkWriter;
+class JfrSerializer;
+class JfrTypeManager;
+class Mutex;
+class Thread;
+
+struct JfrCheckpointEntry {
+ jlong size;
+ jlong start_time;
+ jlong duration;
+ juint flushpoint;
+ juint nof_segments;
+};
+
+typedef JfrMemorySpace<JfrBuffer, JfrMspaceSequentialRetrieval, JfrCheckpointManager> JfrCheckpointMspace;
+
+//
+// Responsible for maintaining checkpoints and by implication types.
+// A checkpoint is an event that has a payload consisting of constant types.
+// A constant type is a binary relation, a set of key-value pairs.
+//
+class JfrCheckpointManager : public JfrCHeapObj {
+ public:
+ typedef JfrCheckpointMspace::Type Buffer;
+ private:
+ JfrCheckpointMspace* _free_list_mspace;
+ JfrCheckpointMspace* _epoch_transition_mspace;
+ Mutex* _lock;
+ JfrTypeManager* _type_manager;
+ const Thread* _service_thread;
+ JfrChunkWriter& _chunkwriter;
+ bool _checkpoint_epoch_state;
+
+ // mspace callback
+ void register_full(Buffer* t, Thread* thread);
+ void lock();
+ void unlock();
+ DEBUG_ONLY(bool is_locked() const;)
+
+ static Buffer* lease_buffer(Thread* t, size_t size = 0);
+ static Buffer* flush(Buffer* old, size_t used, size_t requested, Thread* t);
+
+ size_t clear();
+ size_t write();
+ size_t write_epoch_transition_mspace();
+ size_t write_types();
+ size_t write_safepoint_types();
+ void write_type_set();
+ void shift_epoch();
+ void synchronize_epoch();
+ bool use_epoch_transition_mspace(const Thread* t) const;
+
+ JfrCheckpointManager(JfrChunkWriter& cw);
+ ~JfrCheckpointManager();
+
+ static JfrCheckpointManager& instance();
+ static JfrCheckpointManager* create(JfrChunkWriter& cw);
+ bool initialize();
+ static void destroy();
+
+ static bool register_serializer(JfrTypeId id, bool require_safepoint, bool permit_cache, JfrSerializer* serializer);
+
+ public:
+ void register_service_thread(const Thread* t);
+ static void write_type_set_for_unloaded_classes();
+ static void create_thread_checkpoint(JavaThread* jt);
+ static void write_thread_checkpoint(JavaThread* jt);
+
+ friend class JfrRecorder;
+ friend class JfrRecorderService;
+ friend class JfrCheckpointFlush;
+ friend class JfrCheckpointWriter;
+ friend class JfrSerializer;
+ friend class JfrStackTraceRepository;
+ template <typename, template <typename> class, typename>
+ friend class JfrMemorySpace;
+};
+
+#endif //SHARE_VM_JFR_RECORDER_CHECKPOINT_JFRCHECKPOINTMANAGER_HPP