--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/jfr/support/jfrThreadLocal.cpp	Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,131 @@
+/*
+ * 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 "jfr/periodic/jfrThreadCPULoadEvent.hpp"
+#include "jfr/jni/jfrJavaSupport.hpp"
+#include "jfr/recorder/checkpoint/jfrCheckpointManager.hpp"
+#include "jfr/recorder/checkpoint/types/traceid/jfrTraceId.inline.hpp"
+#include "jfr/recorder/service/jfrOptionSet.hpp"
+#include "jfr/recorder/storage/jfrStorage.hpp"
+#include "jfr/recorder/stacktrace/jfrStackTraceRepository.hpp"
+#include "jfr/support/jfrThreadLocal.hpp"
+#include "memory/allocation.inline.hpp"
+#include "runtime/os.hpp"
+#include "runtime/thread.inline.hpp"
+
+/* This data structure is per thread and only accessed by the thread itself, no locking required */
+JfrThreadLocal::JfrThreadLocal() :
+  _java_event_writer(NULL),
+  _java_buffer(NULL),
+  _native_buffer(NULL),
+  _shelved_buffer(NULL),
+  _stackframes(NULL),
+  _trace_id(JfrTraceId::assign_thread_id()),
+  _thread_cp(),
+  _data_lost(0),
+  _stack_trace_id(max_julong),
+  _user_time(0),
+  _cpu_time(0),
+  _wallclock_time(os::javaTimeNanos()),
+  _stack_trace_hash(0),
+  _stackdepth(0),
+  _entering_suspend_flag(0) {}
+
+u8 JfrThreadLocal::add_data_lost(u8 value) {
+  _data_lost += value;
+  return _data_lost;
+}
+
+bool JfrThreadLocal::has_thread_checkpoint() const {
+  return _thread_cp.valid();
+}
+
+void JfrThreadLocal::set_thread_checkpoint(const JfrCheckpointBlobHandle& ref) {
+  assert(!_thread_cp.valid(), "invariant");
+  _thread_cp = ref;
+}
+
+const JfrCheckpointBlobHandle& JfrThreadLocal::thread_checkpoint() const {
+  return _thread_cp;
+}
+
+void JfrThreadLocal::on_exit(JavaThread* thread) {
+  JfrCheckpointManager::write_thread_checkpoint(thread);
+  JfrThreadCPULoadEvent::send_event_for_thread(thread);
+}
+
+void JfrThreadLocal::on_destruct(Thread* thread) {
+  JfrThreadLocal* const tl = thread->jfr_thread_local();
+  if (tl->has_native_buffer()) {
+    release(tl->native_buffer(), thread);
+  }
+  if (tl->has_java_buffer()) {
+    release(tl->java_buffer(), thread);
+  }
+  assert(tl->shelved_buffer() == NULL, "invariant");
+  if (thread->jfr_thread_local()->has_java_event_writer()) {
+    JfrJavaSupport::destroy_global_jni_handle(tl->java_event_writer());
+  }
+  destroy_stackframes(thread);
+}
+
+JfrBuffer* JfrThreadLocal::acquire(Thread* thread, size_t size) {
+  return JfrStorage::acquire_thread_local(thread, size);
+}
+
+void JfrThreadLocal::release(JfrBuffer* buffer, Thread* thread) {
+  assert(buffer != NULL, "invariant");
+  JfrStorage::release_thread_local(buffer, thread);
+}
+
+JfrBuffer* JfrThreadLocal::install_native_buffer() const {
+  assert(!has_native_buffer(), "invariant");
+  _native_buffer = acquire(Thread::current());
+  return _native_buffer;
+}
+
+JfrBuffer* JfrThreadLocal::install_java_buffer() const {
+  assert(!has_java_buffer(), "invariant");
+  assert(!has_java_event_writer(), "invariant");
+  _java_buffer = acquire(Thread::current());
+  return _java_buffer;
+}
+
+JfrStackFrame* JfrThreadLocal::install_stackframes() const {
+  assert(_stackframes == NULL, "invariant");
+  _stackdepth = (u4)JfrOptionSet::stackdepth();
+  guarantee(_stackdepth > 0, "Stackdepth must be > 0");
+  _stackframes = NEW_C_HEAP_ARRAY(JfrStackFrame, _stackdepth, mtTracing);
+  return _stackframes;
+}
+
+void JfrThreadLocal::destroy_stackframes(Thread* thread) {
+  assert(thread != NULL, "invariant");
+  JfrStackFrame* frames = thread->jfr_thread_local()->stackframes();
+  if (frames != NULL) {
+    FREE_C_HEAP_ARRAY(JfrStackFrame, frames);
+    thread->jfr_thread_local()->set_stackframes(NULL);
+  }
+}