--- /dev/null	2017-11-09 09:38:01.297999907 +0100
+++ new/src/hotspot/share/jfr/periodic/jfrPeriodic.cpp	2018-04-09 14:50:48.685836367 +0200
@@ -0,0 +1,570 @@
+/*
+ * 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 "jvm.h"
+#include "classfile/classLoaderStats.hpp"
+#include "classfile/javaClasses.hpp"
+#include "code/codeCache.hpp"
+#include "compiler/compileBroker.hpp"
+#include "gc/g1/g1HeapRegionEventSender.hpp"
+#include "gc/shared/gcConfiguration.hpp"
+#include "gc/shared/gcTrace.hpp"
+#include "gc/shared/objectCountEventSender.hpp"
+#include "gc/shared/vmGCOperations.hpp"
+#include "jfr/periodic/jfrModuleEvent.hpp"
+#include "jfr/periodic/jfrOSInterface.hpp"
+#include "jfr/periodic/jfrThreadCPULoadEvent.hpp"
+#include "jfr/periodic/jfrThreadDumpEvent.hpp"
+#include "jfr/recorder/jfrRecorder.hpp"
+#include "jfr/utilities/jfrTraceTime.hpp"
+#include "logging/log.hpp"
+#include "memory/heapInspection.hpp"
+#include "memory/resourceArea.hpp"
+#include "oops/oop.inline.hpp"
+#include "runtime/arguments.hpp"
+#include "runtime/globals.hpp"
+#include "runtime/os.hpp"
+#include "runtime/os_perf.hpp"
+#include "runtime/thread.inline.hpp"
+#include "runtime/threadSMR.hpp"
+#include "runtime/sweeper.hpp"
+#include "runtime/vmThread.hpp"
+#include "services/classLoadingService.hpp"
+#include "services/management.hpp"
+#include "services/threadService.hpp"
+#include "trace/tracing.hpp"
+#include "tracefiles/tracePeriodic.hpp"
+#include "utilities/exceptions.hpp"
+#include "utilities/globalDefinitions.hpp"
+
+/**
+ *  JfrPeriodic class
+ *  Implementation of declarations in
+ *  xsl generated traceRequestables.hpp
+ */
+#define TRACE_REQUEST_FUNC(id)    void JfrPeriodicEventSet::request##id(void)
+
+TRACE_REQUEST_FUNC(JVMInformation) {
+  ResourceMark rm;
+  EventJVMInformation event;
+  event.set_jvmName(VM_Version::vm_name());
+  event.set_jvmVersion(VM_Version::internal_vm_info_string());
+  event.set_javaArguments(Arguments::java_command());
+  event.set_jvmArguments(Arguments::jvm_args());
+  event.set_jvmFlags(Arguments::jvm_flags());
+  event.set_jvmStartTime(Management::vm_init_done_time());
+  event.commit();
+ }
+
+TRACE_REQUEST_FUNC(OSInformation) {
+  ResourceMark rm;
+  char* os_name = NEW_RESOURCE_ARRAY(char, 2048);
+  JfrOSInterface::os_version(&os_name);
+  EventOSInformation event;
+  event.set_osVersion(os_name);
+  event.commit();
+}
+
+TRACE_REQUEST_FUNC(ModuleRequire) {
+  JfrModuleEvent::generate_module_dependency_events();
+}
+
+TRACE_REQUEST_FUNC(ModuleExport) {
+  JfrModuleEvent::generate_module_export_events();
+}
+
+/*
+ * This is left empty on purpose, having ExecutionSample as a requestable
+ * is a way of getting the period. The period is passed to ThreadSampling::update_period.
+ * Implementation in jfrSamples.cpp
+ */
+TRACE_REQUEST_FUNC(ExecutionSample) {
+}
+TRACE_REQUEST_FUNC(NativeMethodSample) {
+}
+
+TRACE_REQUEST_FUNC(ThreadDump) {
+  ResourceMark rm;
+  EventThreadDump event;
+  event.set_result(JfrDcmdEvent::thread_dump());
+  event.commit();
+}
+
+static int _native_library_callback(const char* name, address base, address top, void *param) {
+  EventNativeLibrary event(UNTIMED);
+  event.set_name(name);
+  event.set_baseAddress((u8)base);
+  event.set_topAddress((u8)top);
+  event.set_endtime(*(JfrTraceTime*) param);
+  event.commit();
+  return 0;
+}
+
+TRACE_REQUEST_FUNC(NativeLibrary) {
+  JfrTraceTime ts(Tracing::time());
+  os::get_loaded_modules_info(&_native_library_callback, (void *)&ts);
+}
+
+TRACE_REQUEST_FUNC(InitialEnvironmentVariable) {
+  JfrOSInterface::generate_initial_environment_variable_events();
+}
+
+TRACE_REQUEST_FUNC(CPUInformation) {
+  CPUInformation cpu_info;
+  int ret_val = JfrOSInterface::cpu_information(cpu_info);
+  if (ret_val == OS_ERR) {
+    log_debug(jfr, system)( "Unable to generate requestable event CPUInformation");
+    return;
+  }
+  if (ret_val == FUNCTIONALITY_NOT_IMPLEMENTED) {
+     return;
+  }
+  if (ret_val == OS_OK) {
+    EventCPUInformation event;
+    event.set_cpu(cpu_info.cpu_name());
+    event.set_description(cpu_info.cpu_description());
+    event.set_sockets(cpu_info.number_of_sockets());
+    event.set_cores(cpu_info.number_of_cores());
+    event.set_hwThreads(cpu_info.number_of_hardware_threads());
+    event.commit();
+  }
+}
+
+TRACE_REQUEST_FUNC(CPULoad) {
+  double u = 0; // user time
+  double s = 0; // kernel time
+  double t = 0; // total time
+  int ret_val = JfrOSInterface::cpu_loads_process(&u, &s, &t);
+  if (ret_val == OS_ERR) {
+    log_debug(jfr, system)( "Unable to generate requestable event CPULoad");
+    return;
+  }
+  if (ret_val == OS_OK) {
+    EventCPULoad event;
+    event.set_jvmUser((float)u);
+    event.set_jvmSystem((float)s);
+    event.set_machineTotal((float)t);
+    event.commit();
+  }
+}
+
+TRACE_REQUEST_FUNC(ThreadCPULoad) {
+  JfrThreadCPULoadEvent::send_events();
+}
+
+TRACE_REQUEST_FUNC(CPUTimeStampCounter) {
+  EventCPUTimeStampCounter event;
+  event.set_fastTimeEnabled(JfrTraceTime::is_ft_enabled());
+  event.set_fastTimeAutoEnabled(JfrTraceTime::is_ft_supported());
+  event.set_osFrequency(os::elapsed_frequency());
+  event.set_fastTimeFrequency(JfrTraceTime::frequency());
+  event.commit();
+}
+
+TRACE_REQUEST_FUNC(SystemProcess) {
+  char pid_buf[16];
+  SystemProcess* processes = NULL;
+  int num_of_processes = 0;
+  JfrTraceTime start_time(Tracing::time());
+  int ret_val = JfrOSInterface::system_processes(&processes, &num_of_processes);
+  if (ret_val == OS_ERR) {
+    log_debug(jfr, system)( "Unable to generate requestable event SystemProcesses");
+    return;
+  }
+  JfrTraceTime end_time(Tracing::time());
+  if (ret_val == FUNCTIONALITY_NOT_IMPLEMENTED) {
+    return;
+  }
+  if (ret_val == OS_OK) {
+    // feature is implemented, write real event
+    while (processes != NULL) {
+      SystemProcess* tmp = processes;
+      const char* info = processes->command_line();
+      if (info == NULL) {
+         info = processes->path();
+      }
+      if (info == NULL) {
+         info = processes->name();
+      }
+      if (info == NULL) {
+         info = "?";
+      }
+      jio_snprintf(pid_buf, sizeof(pid_buf), "%d", processes->pid());
+      EventSystemProcess event(UNTIMED);
+      event.set_pid(pid_buf);
+      event.set_commandLine(info);
+      event.set_starttime(start_time);
+      event.set_endtime(end_time);
+      event.commit();
+      processes = processes->next();
+      delete tmp;
+    }
+  }
+}
+
+TRACE_REQUEST_FUNC(ThreadContextSwitchRate) {
+  double rate = 0.0;
+  int ret_val = JfrOSInterface::context_switch_rate(&rate);
+  if (ret_val == OS_ERR) {
+    log_debug(jfr, system)( "Unable to generate requestable event ThreadContextSwitchRate");
+    return;
+  }
+  if (ret_val == FUNCTIONALITY_NOT_IMPLEMENTED) {
+    return;
+  }
+  if (ret_val == OS_OK) {
+    EventThreadContextSwitchRate event;
+    event.set_switchRate((float)rate + 0.0f);
+    event.commit();
+  }
+}
+
+#define SEND_FLAGS_OF_TYPE(eventType, flagType)                   \
+  do {                                                            \
+    Flag *flag = Flag::flags;                                     \
+    while (flag->_name != NULL) {                                 \
+      if (flag->is_ ## flagType()) {                              \
+        if (flag->is_unlocked()) {                                \
+          Event ## eventType event;                               \
+          event.set_name(flag->_name);                            \
+          event.set_value(flag->get_ ## flagType());              \
+          event.set_origin(flag->get_origin());                   \
+          event.commit();                                         \
+        }                                                         \
+      }                                                           \
+      ++flag;                                                     \
+    }                                                             \
+  } while (0)
+
+TRACE_REQUEST_FUNC(IntFlag) {
+  SEND_FLAGS_OF_TYPE(IntFlag, int);
+}
+
+TRACE_REQUEST_FUNC(UnsignedIntFlag) {
+  SEND_FLAGS_OF_TYPE(UnsignedIntFlag, uint);
+}
+
+TRACE_REQUEST_FUNC(LongFlag) {
+  SEND_FLAGS_OF_TYPE(LongFlag, intx);
+}
+
+TRACE_REQUEST_FUNC(UnsignedLongFlag) {
+  SEND_FLAGS_OF_TYPE(UnsignedLongFlag, uintx);
+  SEND_FLAGS_OF_TYPE(UnsignedLongFlag, uint64_t);
+  SEND_FLAGS_OF_TYPE(UnsignedLongFlag, size_t);
+}
+
+TRACE_REQUEST_FUNC(DoubleFlag) {
+  SEND_FLAGS_OF_TYPE(DoubleFlag, double);
+}
+
+TRACE_REQUEST_FUNC(BooleanFlag) {
+  SEND_FLAGS_OF_TYPE(BooleanFlag, bool);
+}
+
+TRACE_REQUEST_FUNC(StringFlag) {
+  SEND_FLAGS_OF_TYPE(StringFlag, ccstr);
+}
+
+class VM_GC_SendObjectCountEvent : public VM_GC_HeapInspection {
+ public:
+  VM_GC_SendObjectCountEvent() : VM_GC_HeapInspection(NULL, true) {}
+  virtual void doit() {
+    ObjectCountEventSender::enable_requestable_event();
+    collect();
+    ObjectCountEventSender::disable_requestable_event();
+  }
+};
+
+TRACE_REQUEST_FUNC(ObjectCount) {
+  VM_GC_SendObjectCountEvent op;
+  VMThread::execute(&op);
+}
+
+class VM_G1SendHeapRegionInfoEvents : public VM_Operation {
+  virtual void doit() {
+    G1HeapRegionEventSender::send_events();
+  }
+  virtual VMOp_Type type() const { return VMOp_HeapIterateOperation; }
+};
+
+TRACE_REQUEST_FUNC(G1HeapRegionInformation) {
+  if (UseG1GC) {
+    VM_G1SendHeapRegionInfoEvents op;
+    VMThread::execute(&op);
+  }
+}
+
+// Java Mission Control (JMC) uses (Java) Long.MIN_VALUE to describe that a
+// long value is undefined.
+static jlong jmc_undefined_long = min_jlong;
+
+TRACE_REQUEST_FUNC(GCConfiguration) {
+  GCConfiguration conf;
+  jlong pause_target = conf.has_pause_target_default_value() ? jmc_undefined_long : conf.pause_target();
+  EventGCConfiguration event;
+  event.set_youngCollector(conf.young_collector());
+  event.set_oldCollector(conf.old_collector());
+  event.set_parallelGCThreads(conf.num_parallel_gc_threads());
+  event.set_concurrentGCThreads(conf.num_concurrent_gc_threads());
+  event.set_usesDynamicGCThreads(conf.uses_dynamic_gc_threads());
+  event.set_isExplicitGCConcurrent(conf.is_explicit_gc_concurrent());
+  event.set_isExplicitGCDisabled(conf.is_explicit_gc_disabled());
+  event.set_gcTimeRatio(conf.gc_time_ratio());
+  event.set_pauseTarget((s8)pause_target);
+  event.commit();
+}
+
+TRACE_REQUEST_FUNC(GCTLABConfiguration) {
+  GCTLABConfiguration conf;
+  EventGCTLABConfiguration event;
+  event.set_usesTLABs(conf.uses_tlabs());
+  event.set_minTLABSize(conf.min_tlab_size());
+  event.set_tlabRefillWasteLimit(conf.tlab_refill_waste_limit());
+  event.commit();
+}
+
+TRACE_REQUEST_FUNC(GCSurvivorConfiguration) {
+  GCSurvivorConfiguration conf;
+  EventGCSurvivorConfiguration event;
+  event.set_maxTenuringThreshold(conf.max_tenuring_threshold());
+  event.set_initialTenuringThreshold(conf.initial_tenuring_threshold());
+  event.commit();
+}
+
+TRACE_REQUEST_FUNC(GCHeapConfiguration) {
+  GCHeapConfiguration conf;
+  EventGCHeapConfiguration event;
+  event.set_minSize(conf.min_size());
+  event.set_maxSize(conf.max_size());
+  event.set_initialSize(conf.initial_size());
+  event.set_usesCompressedOops(conf.uses_compressed_oops());
+  event.set_compressedOopsMode(conf.narrow_oop_mode());
+  event.set_objectAlignment(conf.object_alignment_in_bytes());
+  event.set_heapAddressBits(conf.heap_address_size_in_bits());
+  event.commit();
+}
+
+TRACE_REQUEST_FUNC(YoungGenerationConfiguration) {
+  GCYoungGenerationConfiguration conf;
+  jlong max_size = conf.has_max_size_default_value() ? jmc_undefined_long : conf.max_size();
+  EventYoungGenerationConfiguration event;
+  event.set_maxSize((u8)max_size);
+  event.set_minSize(conf.min_size());
+  event.set_newRatio(conf.new_ratio());
+  event.commit();
+}
+
+TRACE_REQUEST_FUNC(InitialSystemProperty) {
+  SystemProperty* p = Arguments::system_properties();
+  JfrTraceTime time_stamp(Tracing::time());
+  while (p !=  NULL) {
+    if (!p->internal()) {
+      EventInitialSystemProperty event(UNTIMED);
+      event.set_key(p->key());
+      event.set_value(p->value());
+      event.set_endtime(time_stamp);
+      event.commit();
+    }
+    p = p->next();
+  }
+}
+
+TRACE_REQUEST_FUNC(ThreadAllocationStatistics) {
+  ResourceMark rm;
+  int initial_size = Threads::number_of_threads();
+  GrowableArray<jlong> allocated(initial_size);
+  GrowableArray<traceid> thread_ids(initial_size);
+  JfrTraceTime time_stamp(Tracing::time());
+  {
+    // Collect allocation statistics while holding threads lock
+    MutexLockerEx ml(Threads_lock);
+    for (JavaThreadIteratorWithHandle jtiwh; JavaThread *jt = jtiwh.next(); ) {
+      allocated.append(jt->cooked_allocated_bytes());
+      thread_ids.append(THREAD_TRACE_ID(jt));
+    }
+  }
+
+  // Write allocation statistics to buffer.
+  for(int i = 0; i < thread_ids.length(); i++) {
+    EventThreadAllocationStatistics event(UNTIMED);
+    event.set_allocated(allocated.at(i));
+    event.set_thread(thread_ids.at(i));
+    event.set_endtime(time_stamp);
+    event.commit();
+  }
+}
+
+/**
+ *  PhysicalMemory event represents:
+ *
+ *  @totalSize == The amount of physical memory (hw) installed and reported by the OS, in bytes.
+ *  @usedSize  == The amount of physical memory currently in use in the system (reserved/committed), in bytes.
+ *
+ *  Both fields are systemwide, i.e. represents the entire OS/HW environment.
+ *  These fields do not include virtual memory.
+ *
+ *  If running inside a guest OS on top of a hypervisor in a virtualized environment,
+ *  the total memory reported is the amount of memory configured for the guest OS by the hypervisor.
+ */
+TRACE_REQUEST_FUNC(PhysicalMemory) {
+  u8 totalPhysicalMemory = os::physical_memory();
+  EventPhysicalMemory event;
+  event.set_totalSize(totalPhysicalMemory);
+  event.set_usedSize(totalPhysicalMemory - os::available_memory());
+  event.commit();
+}
+
+TRACE_REQUEST_FUNC(JavaThreadStatistics) {
+  EventJavaThreadStatistics event;
+  event.set_activeCount(ThreadService::get_live_thread_count());
+  event.set_daemonCount(ThreadService::get_daemon_thread_count());
+  event.set_accumulatedCount(ThreadService::get_total_thread_count());
+  event.set_peakCount(ThreadService::get_peak_thread_count());
+  event.commit();
+}
+
+TRACE_REQUEST_FUNC(ClassLoadingStatistics) {
+  EventClassLoadingStatistics event;
+  event.set_loadedClassCount(ClassLoadingService::loaded_class_count());
+  event.set_unloadedClassCount(ClassLoadingService::unloaded_class_count());
+  event.commit();
+}
+
+class JfrClassLoaderStatsClosure : public ClassLoaderStatsClosure {
+public:
+  JfrClassLoaderStatsClosure() : ClassLoaderStatsClosure(NULL) {}
+
+  bool do_entry(oop const& key, ClassLoaderStats* const& cls) {
+    const ClassLoaderData* this_cld = cls->_class_loader != NULL ?
+      java_lang_ClassLoader::loader_data(cls->_class_loader) : (ClassLoaderData*)NULL;
+    const ClassLoaderData* parent_cld = cls->_parent != NULL ?
+      java_lang_ClassLoader::loader_data(cls->_parent) : (ClassLoaderData*)NULL;
+    EventClassLoaderStatistics event;
+    event.set_classLoader(this_cld);
+    event.set_parentClassLoader(parent_cld);
+    event.set_classLoaderData((intptr_t)cls->_cld);
+    event.set_classCount(cls->_classes_count);
+    event.set_chunkSize(cls->_chunk_sz);
+    event.set_blockSize(cls->_block_sz);
+    event.set_anonymousClassCount(cls->_anon_classes_count);
+    event.set_anonymousChunkSize(cls->_anon_chunk_sz);
+    event.set_anonymousBlockSize(cls->_anon_block_sz);
+    event.commit();
+    return true;
+  }
+
+  void createEvents(void) {
+    _stats->iterate(this);
+  }
+};
+
+class JfrClassLoaderStatsVMOperation : public ClassLoaderStatsVMOperation {
+ public:
+  JfrClassLoaderStatsVMOperation() : ClassLoaderStatsVMOperation(NULL) { }
+
+  void doit() {
+    JfrClassLoaderStatsClosure clsc;
+    ClassLoaderDataGraph::cld_do(&clsc);
+    clsc.createEvents();
+  }
+};
+
+TRACE_REQUEST_FUNC(ClassLoaderStatistics) {
+  JfrClassLoaderStatsVMOperation op;
+  VMThread::execute(&op);
+}
+
+TRACE_REQUEST_FUNC(CompilerStatistics) {
+  EventCompilerStatistics event;
+  event.set_compileCount(CompileBroker::get_total_compile_count());
+  event.set_bailoutCount(CompileBroker::get_total_bailout_count());
+  event.set_invalidatedCount(CompileBroker::get_total_invalidated_count());
+  event.set_osrCompileCount(CompileBroker::get_total_osr_compile_count());
+  event.set_standardCompileCount(CompileBroker::get_total_standard_compile_count());
+  event.set_osrBytesCompiled(CompileBroker::get_sum_osr_bytes_compiled());
+  event.set_standardBytesCompiled(CompileBroker::get_sum_standard_bytes_compiled());
+  event.set_nmetodsSize(CompileBroker::get_sum_nmethod_size());
+  event.set_nmetodCodeSize(CompileBroker::get_sum_nmethod_code_size());
+  event.set_peakTimeSpent(CompileBroker::get_peak_compilation_time());
+  event.set_totalTimeSpent(CompileBroker::get_total_compilation_time());
+  event.commit();
+}
+
+TRACE_REQUEST_FUNC(CompilerConfiguration) {
+  EventCompilerConfiguration event;
+  event.set_threadCount(CICompilerCount);
+  event.set_tieredCompilation(TieredCompilation);
+  event.commit();
+}
+
+TRACE_REQUEST_FUNC(CodeCacheStatistics) {
+  // Emit stats for all available code heaps
+  for (int bt = 0; bt < CodeBlobType::NumTypes; ++bt) {
+    if (CodeCache::heap_available(bt)) {
+      EventCodeCacheStatistics event;
+      event.set_codeBlobType((u1)bt);
+      event.set_startAddress((u8)CodeCache::low_bound(bt));
+      event.set_reservedTopAddress((u8)CodeCache::high_bound(bt));
+      event.set_entryCount(CodeCache::blob_count(bt));
+      event.set_methodCount(CodeCache::nmethod_count(bt));
+      event.set_adaptorCount(CodeCache::adapter_count(bt));
+      event.set_unallocatedCapacity(CodeCache::unallocated_capacity(bt));
+      event.set_fullCount(CodeCache::get_codemem_full_count(bt));
+      event.commit();
+    }
+  }
+}
+
+TRACE_REQUEST_FUNC(CodeCacheConfiguration) {
+  EventCodeCacheConfiguration event;
+  event.set_initialSize(InitialCodeCacheSize);
+  event.set_reservedSize(ReservedCodeCacheSize);
+  event.set_nonNMethodSize(NonNMethodCodeHeapSize);
+  event.set_profiledSize(ProfiledCodeHeapSize);
+  event.set_nonProfiledSize(NonProfiledCodeHeapSize);
+  event.set_expansionSize(CodeCacheExpansionSize);
+  event.set_minBlockLength(CodeCacheMinBlockLength);
+  event.set_startAddress((u8)CodeCache::low_bound());
+  event.set_reservedTopAddress((u8)CodeCache::high_bound());
+  event.commit();
+}
+
+TRACE_REQUEST_FUNC(CodeSweeperStatistics) {
+  EventCodeSweeperStatistics event;
+  event.set_sweepCount(NMethodSweeper::traversal_count());
+  event.set_methodReclaimedCount(NMethodSweeper::total_nof_methods_reclaimed());
+  event.set_totalSweepTime(NMethodSweeper::total_time_sweeping());
+  event.set_peakFractionTime(NMethodSweeper::peak_sweep_fraction_time());
+  event.set_peakSweepTime(NMethodSweeper::peak_sweep_time());
+  event.commit();
+}
+
+TRACE_REQUEST_FUNC(CodeSweeperConfiguration) {
+  EventCodeSweeperConfiguration event;
+  event.set_sweeperEnabled(MethodFlushing);
+  event.set_flushingEnabled(UseCodeCacheFlushing);
+  event.commit();
+}