8073464: GC workers do not have thread names

Reviewed-by: brutisso, tschatzl

hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepThread.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2015, 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
@@ -97,9 +97,7 @@ ConcurrentMarkSweepThread::ConcurrentMarkSweepThread(CMSCollector* collector)
 void ConcurrentMarkSweepThread::run() {
   assert(this == cmst(), "just checking");
 
-  this->record_stack_base_and_size();
+  initialize_in_thread();
-  this->initialize_thread_local_storage();
-  this->set_active_handles(JNIHandleBlock::allocate_block());
   // From this time Thread::current() should be working.
   assert(this == Thread::current(), "just checking");
   if (BindCMSThreadToCPU && !os::bind_to_processor(CPUForCMSThread)) {

hotspot/src/share/vm/gc_implementation/parallelScavenge/gcTaskThread.cpp

@@ -1,6 +1,6 @@
 
 /*
- * Copyright (c) 2002, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2015, 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
@@ -98,6 +98,7 @@ void GCTaskThread::run() {
   // Set up the thread for stack overflow support
   this->record_stack_base_and_size();
   this->initialize_thread_local_storage();
+  this->initialize_named_thread();
   // Bind yourself to your processor.
   if (processor_id() != GCTaskManager::sentinel_worker()) {
     if (TraceGCTaskThread) {

hotspot/src/share/vm/gc_implementation/shared/concurrentGCThread.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2015, 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
@@ -56,6 +56,7 @@ void ConcurrentGCThread::create_and_start() {
 void ConcurrentGCThread::initialize_in_thread() {
   this->record_stack_base_and_size();
   this->initialize_thread_local_storage();
+  this->initialize_named_thread();
   this->set_active_handles(JNIHandleBlock::allocate_block());
   // From this time Thread::current() should be working.
   assert(this == Thread::current(), "just checking");

hotspot/src/share/vm/runtime/thread.cpp

@@ -1161,6 +1161,10 @@ void NamedThread::set_name(const char* format, ...) {
   va_end(ap);
 }
 
+void NamedThread::initialize_named_thread() {
+  set_native_thread_name(name());
+}
+
 void NamedThread::print_on(outputStream* st) const {
   st->print("\"%s\" ", name());
   Thread::print_on(st);

hotspot/src/share/vm/runtime/thread.hpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, 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
@@ -667,6 +667,7 @@ class NamedThread: public Thread {
   ~NamedThread();
   // May only be called once per thread.
   void set_name(const char* format, ...)  ATTRIBUTE_PRINTF(2, 3);
+  void initialize_named_thread();
   virtual bool is_Named_thread() const { return true; }
   virtual char* name() const { return _name == NULL ? (char*)"Unknown Thread" : _name; }
   JavaThread *processed_thread() { return _processed_thread; }

hotspot/src/share/vm/runtime/vmThread.cpp

@@ -243,7 +243,7 @@ void VMThread::run() {
   assert(this == vm_thread(), "check");
 
   this->initialize_thread_local_storage();
-  this->set_native_thread_name(this->name());
+  this->initialize_named_thread();
   this->record_stack_base_and_size();
   // Notify_lock wait checks on active_handles() to rewait in
   // case of spurious wakeup, it should wait on the last

hotspot/src/share/vm/utilities/workgroup.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2015, 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
@@ -247,6 +247,7 @@ void GangWorker::run() {
 void GangWorker::initialize() {
   this->initialize_thread_local_storage();
   this->record_stack_base_and_size();
+  this->initialize_named_thread();
   assert(_gang != NULL, "No gang to run in");
   os::set_priority(this, NearMaxPriority);
   if (TraceWorkGang) {