diff -r c7a3e57fdf4a -r b985cbb00e68 src/share/vm/runtime/thread.cpp
--- a/src/share/vm/runtime/thread.cpp	Thu Aug 01 03:44:03 2019 +0100
+++ b/src/share/vm/runtime/thread.cpp	Mon Aug 12 18:30:40 2019 +0300
@@ -32,6 +32,8 @@
 #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 "memory/gcLocker.inline.hpp"
 #include "memory/metaspaceShared.hpp"
@@ -77,8 +79,6 @@
 #include "services/management.hpp"
 #include "services/memTracker.hpp"
 #include "services/threadService.hpp"
-#include "trace/tracing.hpp"
-#include "trace/traceMacros.hpp"
 #include "utilities/defaultStream.hpp"
 #include "utilities/dtrace.hpp"
 #include "utilities/events.hpp"
@@ -111,6 +111,9 @@
 #if INCLUDE_RTM_OPT
 #include "runtime/rtmLocking.hpp"
 #endif
+#if INCLUDE_JFR
+#include "jfr/jfr.hpp"
+#endif
 
 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
 
@@ -342,7 +345,7 @@
   // Reclaim the objectmonitors from the omFreeList of the moribund thread.
   ObjectSynchronizer::omFlush (this) ;
 
-  EVENT_THREAD_DESTRUCT(this);
+  JFR_ONLY(Jfr::on_thread_destruct(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
@@ -1671,7 +1674,7 @@
 
   EventThreadStart event;
   if (event.should_commit()) {
-     event.set_javalangthread(java_lang_Thread::thread_id(this->threadObj()));
+    event.set_thread(JFR_THREAD_ID(this));
      event.commit();
   }
 
@@ -1805,12 +1808,12 @@
     // from java_lang_Thread object
     EventThreadEnd event;
     if (event.should_commit()) {
-        event.set_javalangthread(java_lang_Thread::thread_id(this->threadObj()));
-        event.commit();
+      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
@@ -2186,6 +2189,8 @@
   if (check_asyncs) {
     check_and_handle_async_exceptions();
   }
+
+  JFR_ONLY(SUSPEND_THREAD_CONDITIONAL(this);)
 }
 
 void JavaThread::send_thread_stop(oop java_throwable)  {
@@ -2424,6 +2429,8 @@
       fatal("missed deoptimization!");
     }
   }
+
+  JFR_ONLY(SUSPEND_THREAD_CONDITIONAL(thread);)
 }
 
 // Slow path when the native==>VM/Java barriers detect a safepoint is in
@@ -3312,6 +3319,14 @@
   if (wt != NULL)
     tc->do_thread(wt);
 
+#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
 }
 
@@ -3438,6 +3453,8 @@
     return status;
   }
 
+  JFR_ONLY(Jfr::on_vm_init();)
+
   // Should be done after the heap is fully created
   main_thread->cache_global_variables();
 
@@ -3565,11 +3582,6 @@
 
   quicken_jni_functions();
 
-  // Must be run after init_ft which initializes ft_enabled
-  if (TRACE_INITIALIZE() != JNI_OK) {
-    vm_exit_during_initialization("Failed to initialize tracing backend");
-  }
-
   // Set flag that basic initialization has completed. Used by exceptions and various
   // debug stuff, that does not work until all basic classes have been initialized.
   set_init_completed();
@@ -3638,9 +3650,7 @@
   // 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 (CleanChunkPoolAsync) {
     Chunk::start_chunk_pool_cleaner_task();