diff -r 7a2a740815b7 -r caf115bb98ad src/hotspot/share/runtime/thread.cpp
--- a/src/hotspot/share/runtime/thread.cpp	Tue May 15 11:28:29 2018 -0700
+++ b/src/hotspot/share/runtime/thread.cpp	Tue May 15 20:24:34 2018 +0200
@@ -40,6 +40,8 @@
 #include "interpreter/interpreter.hpp"
 #include "interpreter/linkResolver.hpp"
 #include "interpreter/oopMapCache.hpp"
+#include "jfr/jfrEvents.hpp"
+#include "jfr/support/jfrThreadId.hpp"
 #include "jvmtifiles/jvmtiEnv.hpp"
 #include "logging/log.hpp"
 #include "logging/logConfiguration.hpp"
@@ -103,9 +105,6 @@
 #include "services/management.hpp"
 #include "services/memTracker.hpp"
 #include "services/threadService.hpp"
-#include "trace/traceMacros.hpp"
-#include "trace/tracing.hpp"
-#include "trace/tracingExport.hpp"
 #include "utilities/align.hpp"
 #include "utilities/copy.hpp"
 #include "utilities/defaultStream.hpp"
@@ -129,6 +128,9 @@
 #if INCLUDE_RTM_OPT
 #include "runtime/rtmLocking.hpp"
 #endif
+#if INCLUDE_JFR
+#include "jfr/jfr.hpp"
+#endif
 
 // Initialization after module runtime initialization
 void universe_post_module_init();  // must happen after call_initPhase2
@@ -365,7 +367,7 @@
 
 
 Thread::~Thread() {
-  EVENT_THREAD_DESTRUCT(this);
+  JFR_ONLY(Jfr::on_thread_destruct(this);)
 
   // Notify the barrier set that a thread is being destroyed. Note that a barrier
   // set might not be available if we encountered errors during bootstrapping.
@@ -374,6 +376,7 @@
     barrier_set->on_thread_destroy(this);
   }
 
+
   // stack_base can be NULL if the thread is never started or exited before
   // record_stack_base_and_size called. Although, we would like to ensure
   // that all started threads do call record_stack_base_and_size(), there is
@@ -1738,7 +1741,7 @@
 
   EventThreadStart event;
   if (event.should_commit()) {
-    event.set_thread(THREAD_TRACE_ID(this));
+    event.set_thread(JFR_THREAD_ID(this));
     event.commit();
   }
 
@@ -1845,12 +1848,12 @@
     // from java_lang_Thread object
     EventThreadEnd event;
     if (event.should_commit()) {
-      event.set_thread(THREAD_TRACE_ID(this));
+      event.set_thread(JFR_THREAD_ID(this));
       event.commit();
     }
 
     // Call after last event on thread
-    EVENT_THREAD_EXIT(this);
+    JFR_ONLY(Jfr::on_thread_exit(this);)
 
     // Call Thread.exit(). We try 3 times in case we got another Thread.stop during
     // the execution of the method. If that is not enough, then we don't really care. Thread.stop
@@ -2207,11 +2210,8 @@
   if (check_asyncs) {
     check_and_handle_async_exceptions();
   }
-#if INCLUDE_TRACE
-  if (is_trace_suspend()) {
-    TRACE_SUSPEND_THREAD(this);
-  }
-#endif
+
+  JFR_ONLY(SUSPEND_THREAD_CONDITIONAL(this);)
 }
 
 void JavaThread::send_thread_stop(oop java_throwable)  {
@@ -2433,11 +2433,8 @@
       fatal("missed deoptimization!");
     }
   }
-#if INCLUDE_TRACE
-  if (thread->is_trace_suspend()) {
-    TRACE_SUSPEND_THREAD(thread);
-  }
-#endif
+
+  JFR_ONLY(SUSPEND_THREAD_CONDITIONAL(thread);)
 }
 
 // Slow path when the native==>VM/Java barriers detect a safepoint is in
@@ -3422,11 +3419,12 @@
     tc->do_thread(wt);
   }
 
-#if INCLUDE_TRACE
-  Thread* sampler_thread = TracingExport::sampler_thread_acquire();
+#if INCLUDE_JFR
+  Thread* sampler_thread = Jfr::sampler_thread();
   if (sampler_thread != NULL) {
     tc->do_thread(sampler_thread);
   }
+
 #endif
 
   // If CompilerThreads ever become non-JavaThreads, add them here
@@ -3735,9 +3733,7 @@
     return status;
   }
 
-  if (TRACE_INITIALIZE() != JNI_OK) {
-    vm_exit_during_initialization("Failed to initialize tracing backend");
-  }
+  JFR_ONLY(Jfr::on_vm_init();)
 
   // Should be done after the heap is fully created
   main_thread->cache_global_variables();
@@ -3908,9 +3904,7 @@
   // Notify JVMTI agents that VM initialization is complete - nop if no agents.
   JvmtiExport::post_vm_initialized();
 
-  if (TRACE_START() != JNI_OK) {
-    vm_exit_during_initialization("Failed to start tracing backend.");
-  }
+  JFR_ONLY(Jfr::on_vm_start();)
 
 #if INCLUDE_MANAGEMENT
   Management::initialize(THREAD);