--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/jfr/dcmd/jfrDcmds.cpp	Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,633 @@
+/*
+ * 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.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "classfile/javaClasses.hpp"
+#include "classfile/vmSymbols.hpp"
+#include "jfr/jfr.hpp"
+#include "jfr/dcmd/jfrDcmds.hpp"
+#include "jfr/jni/jfrJavaSupport.hpp"
+#include "jfr/recorder/jfrRecorder.hpp"
+#include "jfr/recorder/service/jfrOptionSet.hpp"
+#include "memory/resourceArea.hpp"
+#include "oops/oop.inline.hpp"
+#include "oops/symbol.hpp"
+#include "runtime/handles.inline.hpp"
+#include "services/diagnosticArgument.hpp"
+#include "services/diagnosticFramework.hpp"
+#include "utilities/globalDefinitions.hpp"
+
+#ifdef _WINDOWS
+#define JFR_FILENAME_EXAMPLE "C:\\Users\\user\\My Recording.jfr"
+#endif
+
+#ifdef __APPLE__
+#define JFR_FILENAME_EXAMPLE  "/Users/user/My Recording.jfr"
+#endif
+
+#ifndef JFR_FILENAME_EXAMPLE
+#define JFR_FILENAME_EXAMPLE "/home/user/My Recording.jfr"
+#endif
+
+// JNIHandle management
+
+// ------------------------------------------------------------------
+// push_jni_handle_block
+//
+// Push on a new block of JNI handles.
+static void push_jni_handle_block(Thread* const thread) {
+  DEBUG_ONLY(JfrJavaSupport::check_java_thread_in_vm(thread));
+
+  // Allocate a new block for JNI handles.
+  // Inlined code from jni_PushLocalFrame()
+  JNIHandleBlock* prev_handles = thread->active_handles();
+  JNIHandleBlock* entry_handles = JNIHandleBlock::allocate_block(thread);
+  assert(entry_handles != NULL && prev_handles != NULL, "should not be NULL");
+  entry_handles->set_pop_frame_link(prev_handles);  // make sure prev handles get gc'd.
+  thread->set_active_handles(entry_handles);
+}
+
+// ------------------------------------------------------------------
+// pop_jni_handle_block
+//
+// Pop off the current block of JNI handles.
+static void pop_jni_handle_block(Thread* const thread) {
+  DEBUG_ONLY(JfrJavaSupport::check_java_thread_in_vm(thread));
+
+  // Release our JNI handle block
+  JNIHandleBlock* entry_handles = thread->active_handles();
+  JNIHandleBlock* prev_handles = entry_handles->pop_frame_link();
+  // restore
+  thread->set_active_handles(prev_handles);
+  entry_handles->set_pop_frame_link(NULL);
+  JNIHandleBlock::release_block(entry_handles, thread); // may block
+}
+
+class JNIHandleBlockManager : public StackObj {
+ private:
+  Thread* const _thread;
+ public:
+  JNIHandleBlockManager(Thread* thread) : _thread(thread) {
+    push_jni_handle_block(_thread);
+  }
+
+  ~JNIHandleBlockManager() {
+    pop_jni_handle_block(_thread);
+  }
+};
+
+static bool is_module_available(outputStream* output, TRAPS) {
+  return JfrJavaSupport::is_jdk_jfr_module_available(output, THREAD);
+}
+
+static bool is_disabled(outputStream* output) {
+  if (Jfr::is_disabled()) {
+    if (output != NULL) {
+      output->print_cr("Flight Recorder is disabled.\n");
+    }
+    return true;
+  }
+  return false;
+}
+
+static bool is_recorder_instance_created(outputStream* output) {
+  if (!JfrRecorder::is_created()) {
+    if (output != NULL) {
+      output->print_cr("No available recordings.\n");
+      output->print_cr("Use JFR.start to start a recording.\n");
+    }
+    return false;
+  }
+  return true;
+}
+
+static bool invalid_state(outputStream* out, TRAPS) {
+  DEBUG_ONLY(JfrJavaSupport::check_java_thread_in_vm(THREAD));
+  return is_disabled(out) || !is_module_available(out, THREAD);
+}
+
+static void print_pending_exception(outputStream* output, oop throwable) {
+  assert(throwable != NULL, "invariant");
+
+  oop msg = java_lang_Throwable::message(throwable);
+
+  if (msg != NULL) {
+    char* text = java_lang_String::as_utf8_string(msg);
+    output->print_raw_cr(text);
+  }
+}
+
+static void print_message(outputStream* output, const char* message) {
+  if (message != NULL) {
+    output->print_raw(message);
+  }
+}
+
+static void handle_dcmd_result(outputStream* output,
+                               const oop result,
+                               const DCmdSource source,
+                               TRAPS) {
+  DEBUG_ONLY(JfrJavaSupport::check_java_thread_in_vm(THREAD));
+  assert(output != NULL, "invariant");
+  if (HAS_PENDING_EXCEPTION) {
+    print_pending_exception(output, PENDING_EXCEPTION);
+    // Don't clear excption on startup, JVM should fail initialization.
+    if (DCmd_Source_Internal != source) {
+      CLEAR_PENDING_EXCEPTION;
+    }
+    return;
+  }
+
+  assert(!HAS_PENDING_EXCEPTION, "invariant");
+
+  if (result != NULL) {
+    const char* result_chars = java_lang_String::as_utf8_string(result);
+    print_message(output, result_chars);
+  }
+}
+
+static oop construct_dcmd_instance(JfrJavaArguments* args, TRAPS) {
+  assert(args != NULL, "invariant");
+  DEBUG_ONLY(JfrJavaSupport::check_java_thread_in_vm(THREAD));
+  assert(args->klass() != NULL, "invariant");
+  args->set_name("<init>", CHECK_NULL);
+  args->set_signature("()V", CHECK_NULL);
+  JfrJavaSupport::new_object(args, CHECK_NULL);
+  return (oop)args->result()->get_jobject();
+}
+
+JfrDumpFlightRecordingDCmd::JfrDumpFlightRecordingDCmd(outputStream* output,
+                                                       bool heap) : DCmdWithParser(output, heap),
+  _name("name", "Recording name, e.g. \\\"My Recording\\\"", "STRING", true, NULL),
+  _filename("filename", "Copy recording data to file, i.e \\\"" JFR_FILENAME_EXAMPLE "\\\"", "STRING", true),
+  _path_to_gc_roots("path-to-gc-roots", "Collect path to GC roots", "BOOLEAN", false, "false") {
+  _dcmdparser.add_dcmd_option(&_name);
+  _dcmdparser.add_dcmd_option(&_filename);
+  _dcmdparser.add_dcmd_option(&_path_to_gc_roots);
+};
+
+int JfrDumpFlightRecordingDCmd::num_arguments() {
+  ResourceMark rm;
+  JfrDumpFlightRecordingDCmd* dcmd = new JfrDumpFlightRecordingDCmd(NULL, false);
+  if (dcmd != NULL) {
+    DCmdMark mark(dcmd);
+    return dcmd->_dcmdparser.num_arguments();
+  }
+  return 0;
+}
+
+void JfrDumpFlightRecordingDCmd::execute(DCmdSource source, TRAPS) {
+  DEBUG_ONLY(JfrJavaSupport::check_java_thread_in_vm(THREAD));
+
+  if (invalid_state(output(), THREAD) || !is_recorder_instance_created(output())) {
+    return;
+  }
+
+  ResourceMark rm(THREAD);
+  HandleMark hm(THREAD);
+  JNIHandleBlockManager jni_handle_management(THREAD);
+
+  JavaValue result(T_OBJECT);
+  JfrJavaArguments constructor_args(&result);
+  constructor_args.set_klass("jdk/jfr/internal/dcmd/DCmdDump", CHECK);
+  const oop dcmd = construct_dcmd_instance(&constructor_args, CHECK);
+  Handle h_dcmd_instance(THREAD, dcmd);
+  assert(h_dcmd_instance.not_null(), "invariant");
+
+  jstring name = NULL;
+  if (_name.is_set() && _name.value()  != NULL) {
+    name = JfrJavaSupport::new_string(_name.value(), CHECK);
+  }
+
+  jstring filepath = NULL;
+  if (_filename.is_set() && _filename.value() != NULL) {
+    filepath = JfrJavaSupport::new_string(_filename.value(), CHECK);
+  }
+
+  jobject path_to_gc_roots = NULL;
+  if (_path_to_gc_roots.is_set()) {
+    path_to_gc_roots = JfrJavaSupport::new_java_lang_Boolean(_path_to_gc_roots.value(), CHECK);
+  }
+
+  static const char klass[] = "jdk/jfr/internal/dcmd/DCmdDump";
+  static const char method[] = "execute";
+  static const char signature[] = "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/Boolean;)Ljava/lang/String;";
+
+  JfrJavaArguments execute_args(&result, klass, method, signature, CHECK);
+  execute_args.set_receiver(h_dcmd_instance);
+
+  // arguments
+  execute_args.push_jobject(name);
+  execute_args.push_jobject(filepath);
+  execute_args.push_jobject(path_to_gc_roots);
+
+  JfrJavaSupport::call_virtual(&execute_args, THREAD);
+  handle_dcmd_result(output(), (oop)result.get_jobject(), source, THREAD);
+}
+
+JfrCheckFlightRecordingDCmd::JfrCheckFlightRecordingDCmd(outputStream* output, bool heap) : DCmdWithParser(output, heap),
+  _name("name","Recording text, e.g. \\\"My Recording\\\" or omit to see all recordings","STRING",false, NULL),
+  _verbose("verbose","Print event settings for the recording(s)","BOOLEAN",
+           false, "false") {
+  _dcmdparser.add_dcmd_option(&_name);
+  _dcmdparser.add_dcmd_option(&_verbose);
+};
+
+int JfrCheckFlightRecordingDCmd::num_arguments() {
+  ResourceMark rm;
+  JfrCheckFlightRecordingDCmd* dcmd = new JfrCheckFlightRecordingDCmd(NULL, false);
+  if (dcmd != NULL) {
+    DCmdMark mark(dcmd);
+    return dcmd->_dcmdparser.num_arguments();
+  }
+  return 0;
+}
+
+void JfrCheckFlightRecordingDCmd::execute(DCmdSource source, TRAPS) {
+  DEBUG_ONLY(JfrJavaSupport::check_java_thread_in_vm(THREAD));
+
+  if (invalid_state(output(), THREAD) || !is_recorder_instance_created(output())) {
+    return;
+  }
+
+  ResourceMark rm(THREAD);
+  HandleMark hm(THREAD);
+  JNIHandleBlockManager jni_handle_management(THREAD);
+
+  JavaValue result(T_OBJECT);
+  JfrJavaArguments constructor_args(&result);
+  constructor_args.set_klass("jdk/jfr/internal/dcmd/DCmdCheck", CHECK);
+  const oop dcmd = construct_dcmd_instance(&constructor_args, CHECK);
+  Handle h_dcmd_instance(THREAD, dcmd);
+  assert(h_dcmd_instance.not_null(), "invariant");
+
+  jstring name = NULL;
+  if (_name.is_set() && _name.value() != NULL) {
+    name = JfrJavaSupport::new_string(_name.value(), CHECK);
+  }
+
+  jobject verbose = NULL;
+  if (_verbose.is_set()) {
+    verbose = JfrJavaSupport::new_java_lang_Boolean(_verbose.value(), CHECK);
+  }
+
+  static const char klass[] = "jdk/jfr/internal/dcmd/DCmdCheck";
+  static const char method[] = "execute";
+  static const char signature[] = "(Ljava/lang/String;Ljava/lang/Boolean;)Ljava/lang/String;";
+
+  JfrJavaArguments execute_args(&result, klass, method, signature, CHECK);
+  execute_args.set_receiver(h_dcmd_instance);
+
+  // arguments
+  execute_args.push_jobject(name);
+  execute_args.push_jobject(verbose);
+
+  JfrJavaSupport::call_virtual(&execute_args, THREAD);
+  handle_dcmd_result(output(), (oop)result.get_jobject(), source, THREAD);
+}
+
+JfrStartFlightRecordingDCmd::JfrStartFlightRecordingDCmd(outputStream* output,
+                                                         bool heap) : DCmdWithParser(output, heap),
+  _name("name", "Name that can be used to identify recording, e.g. \\\"My Recording\\\"", "STRING", false, NULL),
+  _settings("settings", "Settings file(s), e.g. profile or default. See JRE_HOME/lib/jfr", "STRING SET", false),
+  _delay("delay", "Delay recording start with (s)econds, (m)inutes), (h)ours), or (d)ays, e.g. 5h.", "NANOTIME", false, "0"),
+  _duration("duration", "Duration of recording in (s)econds, (m)inutes, (h)ours, or (d)ays, e.g. 300s.", "NANOTIME", false, "0"),
+  _filename("filename", "Resulting recording filename, e.g. \\\"" JFR_FILENAME_EXAMPLE "\\\"", "STRING", false),
+  _disk("disk", "Recording should be persisted to disk", "BOOLEAN", false),
+  _maxage("maxage", "Maximum time to keep recorded data (on disk) in (s)econds, (m)inutes, (h)ours, or (d)ays, e.g. 60m, or 0 for no limit", "NANOTIME", false, "0"),
+  _maxsize("maxsize", "Maximum amount of bytes to keep (on disk) in (k)B, (M)B or (G)B, e.g. 500M, or 0 for no limit", "MEMORY SIZE", false, "0"),
+  _dump_on_exit("dumponexit", "Dump running recording when JVM shuts down", "BOOLEAN", false),
+  _path_to_gc_roots("path-to-gc-roots", "Collect path to GC roots", "BOOLEAN", false, "false") {
+  _dcmdparser.add_dcmd_option(&_name);
+  _dcmdparser.add_dcmd_option(&_settings);
+  _dcmdparser.add_dcmd_option(&_delay);
+  _dcmdparser.add_dcmd_option(&_duration);
+  _dcmdparser.add_dcmd_option(&_disk);
+  _dcmdparser.add_dcmd_option(&_filename);
+  _dcmdparser.add_dcmd_option(&_maxage);
+  _dcmdparser.add_dcmd_option(&_maxsize);
+  _dcmdparser.add_dcmd_option(&_dump_on_exit);
+  _dcmdparser.add_dcmd_option(&_path_to_gc_roots);
+};
+
+int JfrStartFlightRecordingDCmd::num_arguments() {
+  ResourceMark rm;
+  JfrStartFlightRecordingDCmd* dcmd = new JfrStartFlightRecordingDCmd(NULL, false);
+  if (dcmd != NULL) {
+    DCmdMark mark(dcmd);
+    return dcmd->_dcmdparser.num_arguments();
+  }
+  return 0;
+}
+
+void JfrStartFlightRecordingDCmd::execute(DCmdSource source, TRAPS) {
+  DEBUG_ONLY(JfrJavaSupport::check_java_thread_in_vm(THREAD));
+
+  if (invalid_state(output(), THREAD)) {
+    return;
+  }
+
+  ResourceMark rm(THREAD);
+  HandleMark hm(THREAD);
+  JNIHandleBlockManager jni_handle_management(THREAD);
+
+  JavaValue result(T_OBJECT);
+  JfrJavaArguments constructor_args(&result);
+  constructor_args.set_klass("jdk/jfr/internal/dcmd/DCmdStart", THREAD);
+  const oop dcmd = construct_dcmd_instance(&constructor_args, CHECK);
+  Handle h_dcmd_instance(THREAD, dcmd);
+  assert(h_dcmd_instance.not_null(), "invariant");
+
+  jstring name = NULL;
+  if (_name.is_set() && _name.value() != NULL) {
+    name = JfrJavaSupport::new_string(_name.value(), CHECK);
+  }
+
+  jstring filename = NULL;
+  if (_filename.is_set() && _filename.value() != NULL) {
+    filename = JfrJavaSupport::new_string(_filename.value(), CHECK);
+  }
+
+  jobject maxage = NULL;
+  if (_maxage.is_set()) {
+    maxage = JfrJavaSupport::new_java_lang_Long(_maxage.value()._nanotime, CHECK);
+  }
+
+  jobject maxsize = NULL;
+  if (_maxsize.is_set()) {
+    maxsize = JfrJavaSupport::new_java_lang_Long(_maxsize.value()._size, CHECK);
+  }
+
+  jobject duration = NULL;
+  if (_duration.is_set()) {
+    duration = JfrJavaSupport::new_java_lang_Long(_duration.value()._nanotime, CHECK);
+  }
+
+  jobject delay = NULL;
+  if (_delay.is_set()) {
+    delay = JfrJavaSupport::new_java_lang_Long(_delay.value()._nanotime, CHECK);
+  }
+
+  jobject disk = NULL;
+  if (_disk.is_set()) {
+    disk = JfrJavaSupport::new_java_lang_Boolean(_disk.value(), CHECK);
+  }
+
+  jobject dump_on_exit = NULL;
+  if (_dump_on_exit.is_set()) {
+    dump_on_exit = JfrJavaSupport::new_java_lang_Boolean(_dump_on_exit.value(), CHECK);
+  }
+
+  jobject path_to_gc_roots = NULL;
+  if (_path_to_gc_roots.is_set()) {
+    path_to_gc_roots = JfrJavaSupport::new_java_lang_Boolean(_path_to_gc_roots.value(), CHECK);
+  }
+
+  jobjectArray settings = NULL;
+  if (_settings.is_set()) {
+    const int length = _settings.value()->array()->length();
+    settings = JfrJavaSupport::new_string_array(length, CHECK);
+    assert(settings != NULL, "invariant");
+    for (int i = 0; i < length; ++i) {
+      jobject element = JfrJavaSupport::new_string(_settings.value()->array()->at(i), CHECK);
+      assert(element != NULL, "invariant");
+      JfrJavaSupport::set_array_element(settings, element, i, CHECK);
+    }
+  }
+
+  static const char klass[] = "jdk/jfr/internal/dcmd/DCmdStart";
+  static const char method[] = "execute";
+  static const char signature[] = "(Ljava/lang/String;[Ljava/lang/String;Ljava/lang/Long;"
+    "Ljava/lang/Long;Ljava/lang/Boolean;Ljava/lang/String;"
+    "Ljava/lang/Long;Ljava/lang/Long;Ljava/lang/Boolean;Ljava/lang/Boolean;)Ljava/lang/String;";
+
+  JfrJavaArguments execute_args(&result, klass, method, signature, CHECK);
+  execute_args.set_receiver(h_dcmd_instance);
+
+  // arguments
+  execute_args.push_jobject(name);
+  execute_args.push_jobject(settings);
+  execute_args.push_jobject(delay);
+  execute_args.push_jobject(duration);
+  execute_args.push_jobject(disk);
+  execute_args.push_jobject(filename);
+  execute_args.push_jobject(maxage);
+  execute_args.push_jobject(maxsize);
+  execute_args.push_jobject(dump_on_exit);
+  execute_args.push_jobject(path_to_gc_roots);
+
+  JfrJavaSupport::call_virtual(&execute_args, THREAD);
+  handle_dcmd_result(output(), (oop)result.get_jobject(), source, THREAD);
+}
+
+JfrStopFlightRecordingDCmd::JfrStopFlightRecordingDCmd(outputStream* output,
+                                                       bool heap) : DCmdWithParser(output, heap),
+  _name("name", "Recording text,.e.g \\\"My Recording\\\"", "STRING", false, NULL),
+  _filename("filename", "Copy recording data to file, e.g. \\\"" JFR_FILENAME_EXAMPLE "\\\"", "STRING", false, NULL) {
+  _dcmdparser.add_dcmd_option(&_name);
+  _dcmdparser.add_dcmd_option(&_filename);
+};
+
+int JfrStopFlightRecordingDCmd::num_arguments() {
+  ResourceMark rm;
+  JfrStopFlightRecordingDCmd* dcmd = new JfrStopFlightRecordingDCmd(NULL, false);
+  if (dcmd != NULL) {
+    DCmdMark mark(dcmd);
+    return dcmd->_dcmdparser.num_arguments();
+  }
+  return 0;
+}
+
+void JfrStopFlightRecordingDCmd::execute(DCmdSource source, TRAPS) {
+  DEBUG_ONLY(JfrJavaSupport::check_java_thread_in_vm(THREAD));
+
+  if (invalid_state(output(), THREAD) || !is_recorder_instance_created(output())) {
+    return;
+  }
+
+  ResourceMark rm(THREAD);
+  HandleMark hm(THREAD);
+  JNIHandleBlockManager jni_handle_management(THREAD);
+
+  JavaValue result(T_OBJECT);
+  JfrJavaArguments constructor_args(&result);
+  constructor_args.set_klass("jdk/jfr/internal/dcmd/DCmdStop", CHECK);
+  const oop dcmd = construct_dcmd_instance(&constructor_args, CHECK);
+  Handle h_dcmd_instance(THREAD, dcmd);
+  assert(h_dcmd_instance.not_null(), "invariant");
+
+  jstring name = NULL;
+  if (_name.is_set() && _name.value()  != NULL) {
+    name = JfrJavaSupport::new_string(_name.value(), CHECK);
+  }
+
+  jstring filepath = NULL;
+  if (_filename.is_set() && _filename.value() != NULL) {
+    filepath = JfrJavaSupport::new_string(_filename.value(), CHECK);
+  }
+
+  static const char klass[] = "jdk/jfr/internal/dcmd/DCmdStop";
+  static const char method[] = "execute";
+  static const char signature[] = "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;";
+
+  JfrJavaArguments execute_args(&result, klass, method, signature, CHECK);
+  execute_args.set_receiver(h_dcmd_instance);
+
+  // arguments
+  execute_args.push_jobject(name);
+  execute_args.push_jobject(filepath);
+
+  JfrJavaSupport::call_virtual(&execute_args, THREAD);
+  handle_dcmd_result(output(), (oop)result.get_jobject(), source, THREAD);
+}
+
+JfrConfigureFlightRecorderDCmd::JfrConfigureFlightRecorderDCmd(outputStream* output,
+                                                               bool heap) : DCmdWithParser(output, heap),
+  _repository_path("repositorypath", "Path to repository,.e.g \\\"My Repository\\\"", "STRING", false, NULL),
+  _dump_path("dumppath", "Path to dump,.e.g \\\"My Dump path\\\"", "STRING", false, NULL),
+  _stack_depth("stackdepth", "Stack Depth", "JLONG", false, "64"),
+  _global_buffer_count("globalbuffercount", "Number of global buffers,", "JLONG", false, "32"),
+  _global_buffer_size("globalbuffersize", "Size of a global buffers,", "JLONG", false, "524288"),
+  _thread_buffer_size("thread_buffer_size", "Size of a thread buffer", "JLONG", false, "8192"),
+  _memory_size("memorysize", "Overall memory size, ", "JLONG", false, "16777216"),
+  _max_chunk_size("maxchunksize", "Size of an individual disk chunk", "JLONG", false, "12582912"),
+  _sample_threads("samplethreads", "Activate Thread sampling", "BOOLEAN", false, "true") {
+  _dcmdparser.add_dcmd_option(&_repository_path);
+  _dcmdparser.add_dcmd_option(&_dump_path);
+  _dcmdparser.add_dcmd_option(&_stack_depth);
+  _dcmdparser.add_dcmd_option(&_global_buffer_count);
+  _dcmdparser.add_dcmd_option(&_global_buffer_size);
+  _dcmdparser.add_dcmd_option(&_thread_buffer_size);
+  _dcmdparser.add_dcmd_option(&_memory_size);
+  _dcmdparser.add_dcmd_option(&_max_chunk_size);
+  _dcmdparser.add_dcmd_option(&_sample_threads);
+};
+
+int JfrConfigureFlightRecorderDCmd::num_arguments() {
+  ResourceMark rm;
+  JfrConfigureFlightRecorderDCmd* dcmd = new JfrConfigureFlightRecorderDCmd(NULL, false);
+  if (dcmd != NULL) {
+    DCmdMark mark(dcmd);
+    return dcmd->_dcmdparser.num_arguments();
+  }
+  return 0;
+}
+
+void JfrConfigureFlightRecorderDCmd::execute(DCmdSource source, TRAPS) {
+  DEBUG_ONLY(JfrJavaSupport::check_java_thread_in_vm(THREAD));
+
+  if (invalid_state(output(), THREAD)) {
+    return;
+  }
+
+  ResourceMark rm(THREAD);
+  HandleMark hm(THREAD);
+  JNIHandleBlockManager jni_handle_management(THREAD);
+
+  JavaValue result(T_OBJECT);
+  JfrJavaArguments constructor_args(&result);
+  constructor_args.set_klass("jdk/jfr/internal/dcmd/DCmdConfigure", CHECK);
+  const oop dcmd = construct_dcmd_instance(&constructor_args, CHECK);
+  Handle h_dcmd_instance(THREAD, dcmd);
+  assert(h_dcmd_instance.not_null(), "invariant");
+
+  jstring repository_path = NULL;
+  if (_repository_path.is_set() && _repository_path.value() != NULL) {
+    repository_path = JfrJavaSupport::new_string(_repository_path.value(), CHECK);
+  }
+
+  jstring dump_path = NULL;
+  if (_dump_path.is_set() && _dump_path.value() != NULL) {
+    dump_path = JfrJavaSupport::new_string(_dump_path.value(), CHECK);
+  }
+
+  jobject stack_depth = NULL;
+  if (_stack_depth.is_set()) {
+    stack_depth = JfrJavaSupport::new_java_lang_Integer((jint)_stack_depth.value(), CHECK);
+  }
+
+  jobject global_buffer_count = NULL;
+  if (_global_buffer_count.is_set()) {
+    global_buffer_count = JfrJavaSupport::new_java_lang_Long(_global_buffer_count.value(), CHECK);
+  }
+
+  jobject global_buffer_size = NULL;
+  if (_global_buffer_size.is_set()) {
+    global_buffer_size = JfrJavaSupport::new_java_lang_Long(_global_buffer_size.value(), CHECK);
+  }
+
+  jobject thread_buffer_size = NULL;
+  if (_thread_buffer_size.is_set()) {
+    thread_buffer_size = JfrJavaSupport::new_java_lang_Long(_thread_buffer_size.value(), CHECK);
+  }
+
+  jobject max_chunk_size = NULL;
+  if (_max_chunk_size.is_set()) {
+    max_chunk_size = JfrJavaSupport::new_java_lang_Long(_max_chunk_size.value(), CHECK);
+  }
+
+  jobject memory_size = NULL;
+  if (_memory_size.is_set()) {
+    memory_size = JfrJavaSupport::new_java_lang_Long(_memory_size.value(), CHECK);
+  }
+
+  jobject sample_threads = NULL;
+  if (_sample_threads.is_set()) {
+    sample_threads = JfrJavaSupport::new_java_lang_Boolean(_sample_threads.value(), CHECK);
+  }
+
+  static const char klass[] = "jdk/jfr/internal/dcmd/DCmdConfigure";
+  static const char method[] = "execute";
+  static const char signature[] = "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/Integer;"
+    "Ljava/lang/Long;Ljava/lang/Long;Ljava/lang/Long;Ljava/lang/Long;"
+    "Ljava/lang/Long;Ljava/lang/Boolean;)Ljava/lang/String;";
+
+  JfrJavaArguments execute_args(&result, klass, method, signature, CHECK);
+  execute_args.set_receiver(h_dcmd_instance);
+
+  // params
+  execute_args.push_jobject(repository_path);
+  execute_args.push_jobject(dump_path);
+  execute_args.push_jobject(stack_depth);
+  execute_args.push_jobject(global_buffer_count);
+  execute_args.push_jobject(global_buffer_size);
+  execute_args.push_jobject(thread_buffer_size);
+  execute_args.push_jobject(memory_size);
+  execute_args.push_jobject(max_chunk_size);
+  execute_args.push_jobject(sample_threads);
+
+  JfrJavaSupport::call_virtual(&execute_args, THREAD);
+  handle_dcmd_result(output(), (oop)result.get_jobject(), source, THREAD);
+}
+
+bool register_jfr_dcmds() {
+  uint32_t full_export = DCmd_Source_Internal | DCmd_Source_AttachAPI | DCmd_Source_MBean;
+  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JfrCheckFlightRecordingDCmd>(full_export, true, false));
+  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JfrDumpFlightRecordingDCmd>(full_export, true, false));
+  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JfrStartFlightRecordingDCmd>(full_export, true, false));
+  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JfrStopFlightRecordingDCmd>(full_export, true, false));
+  DCmdFactory::register_DCmdFactory(new DCmdFactoryImpl<JfrConfigureFlightRecorderDCmd>(full_export, true, false));
+  return true;
+}
+