--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/jfr/recorder/repository/jfrRepository.hpp Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2012, 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_REPOSITORY_JFRREPOSITORY_HPP
+#define SHARE_VM_JFR_RECORDER_REPOSITORY_JFRREPOSITORY_HPP
+
+#include "jni.h"
+#include "jfr/utilities/jfrAllocation.hpp"
+
+class JfrChunkWriter;
+class JfrPostBox;
+
+//
+// Represents the location on disk where internal files, "chunks", are stored.
+//
+// A "chunk" is a self-contained file artifact storing events and metadata that
+// has been moved out of process memory.
+//
+// Chunk files are associated with recordings and are managed at a higher level in Java.
+// Java continously keeps the VM informed about new chunk locations via set_chunk_path().
+//
+// A JfrChunkWriter will open the next chunk file which it maintains as the current chunk.
+// There is a rotation scheme in place for creating new chunks at certain intervals.
+//
+class JfrRepository : public JfrCHeapObj {
+ friend class JfrRecorder;
+ friend class JfrRecorderService;
+ private:
+ char* _path;
+ JfrPostBox& _post_box;
+
+ JfrRepository(JfrPostBox& post_box);
+ ~JfrRepository();
+
+ bool set_path(const char* path);
+ void set_chunk_path(const char* path);
+ bool open_chunk(bool vm_error = false);
+ size_t close_chunk(jlong metadata_offset);
+ void on_vm_error();
+ static void notify_on_new_chunk_path();
+ static JfrChunkWriter& chunkwriter();
+
+ static JfrRepository& instance();
+ static JfrRepository* create(JfrPostBox& post_box);
+ bool initialize();
+ static void destroy();
+
+ public:
+ static void set_path(jstring location, JavaThread* jt);
+ static void set_chunk_path(jstring path, JavaThread* jt);
+};
+
+#endif // SHARE_VM_JFR_RECORDER_REPOSITORY_JFRREPOSITORY_HPP