jdk8-mips64-public/hotspot: src/share/vm/jfr/recorder/checkpoint/types/traceid/jfrTraceId.cpp@45c8de52649c (annotated)

src/share/vm/jfr/recorder/checkpoint/types/traceid/jfrTraceId.cpp@45c8de52649c (annotated)

src/share/vm/jfr/recorder/checkpoint/types/traceid/jfrTraceId.cpp

Tue, 02 Jun 2020 14:29:43 +0800

author: ddong
date: Tue, 02 Jun 2020 14:29:43 +0800
changeset 9941: 45c8de52649c
parent 9858: b985cbb00e68
permissions: -rw-r--r--

8246310: Clean commented-out code about ModuleEntry andPackageEntry in JFR
Reviewed-by: adinn

 /*
  * Copyright (c) 2011, 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 "classfile/classLoaderData.inline.hpp"
 #include "classfile/symbolTable.hpp"
 #include "jfr/recorder/checkpoint/types/traceid/jfrTraceId.inline.hpp"
 #include "jfr/utilities/jfrTypes.hpp"
 #include "oops/arrayKlass.hpp"
 #include "oops/klass.inline.hpp"
 #include "oops/instanceKlass.hpp"
 #include "oops/method.hpp"
 #include "oops/oop.inline.hpp"
 #include "runtime/atomic.inline.hpp"
 #include "runtime/orderAccess.inline.hpp"
 #include "runtime/vm_version.hpp"
 #include "runtime/jniHandles.hpp"
 #include "runtime/thread.inline.hpp"
 #include "utilities/debug.hpp"
  // returns updated value
 static traceid atomic_inc(traceid volatile* const dest) {
   return (traceid) atomic_add_jlong(1, (jlong volatile*) dest);
 }
 static traceid next_class_id() {
   static volatile traceid class_id_counter = MaxJfrEventId + 100;
   return atomic_inc(&class_id_counter) << TRACE_ID_SHIFT;
 }
 static traceid next_thread_id() {
 #ifdef _LP64
   static volatile traceid thread_id_counter = 0;
   return atomic_inc(&thread_id_counter);
 #else
   static volatile jint thread_id_counter = 0;
   assert(thread_id_counter >= 0 && thread_id_counter < INT_MAX, "thread counter has been overflown");
   Atomic::inc(&thread_id_counter);
   return (traceid) thread_id_counter;
 #endif
 }
 static traceid next_class_loader_data_id() {
   static volatile traceid cld_id_counter = 1;
   return atomic_inc(&cld_id_counter) << TRACE_ID_SHIFT;
 }
 static bool found_jdk_jfr_event_klass = false;
 static void check_klass(const Klass* klass) {
   assert(klass != NULL, "invariant");
   if (found_jdk_jfr_event_klass) {
     return;
   }
   static const Symbol* jdk_jfr_event_sym = NULL;
   if (jdk_jfr_event_sym == NULL) {
     // setup when loading the first TypeArrayKlass (Universe::genesis) hence single threaded invariant
     jdk_jfr_event_sym = SymbolTable::new_permanent_symbol("jdk/jfr/Event", Thread::current());
   }
   assert(jdk_jfr_event_sym != NULL, "invariant");
   if (jdk_jfr_event_sym == klass->name()/* XXX && klass->class_loader() == NULL*/) {
     found_jdk_jfr_event_klass = true;
     JfrTraceId::tag_as_jdk_jfr_event(klass);
   }
 }
 void JfrTraceId::assign(const Klass* klass) {
   assert(klass != NULL, "invariant");
   klass->set_trace_id(next_class_id());
   check_klass(klass);
   const Klass* const super = klass->super();
   if (super == NULL) {
     return;
   }
   if (IS_EVENT_KLASS(super)) {
     tag_as_jdk_jfr_event_sub(klass);
   }
 }
 void JfrTraceId::assign(const ClassLoaderData* cld) {
   assert(cld != NULL, "invariant");
   if (cld->is_anonymous()) {
     cld->set_trace_id(0);
     return;
   }
   cld->set_trace_id(next_class_loader_data_id());
 }
 traceid JfrTraceId::assign_thread_id() {
   return next_thread_id();
 }
 // used by CDS / APPCDS as part of "remove_unshareable_info"
 void JfrTraceId::remove(const Klass* k) {
   assert(k != NULL, "invariant");
   // Mask off and store the event flags.
   // This mechanism will retain the event specific flags
   // in the archive, allowing for event flag restoration
   // when renewing the traceid on klass revival.
   k->set_trace_id(EVENT_FLAGS_MASK(k));
 }
 // used by CDS / APPCDS as part of "restore_unshareable_info"
 void JfrTraceId::restore(const Klass* k) {
   assert(k != NULL, "invariant");
   if (IS_JDK_JFR_EVENT_KLASS(k)) {
     found_jdk_jfr_event_klass = true;
   }
   const traceid event_flags = k->trace_id();
   // get a fresh traceid and restore the original event flags
   k->set_trace_id(next_class_id() | event_flags);
 }
 traceid JfrTraceId::get(jclass jc) {
   assert(jc != NULL, "invariant");
   assert(((JavaThread*)Thread::current())->thread_state() == _thread_in_vm, "invariant");
   const oop my_oop = JNIHandles::resolve(jc);
   assert(my_oop != NULL, "invariant");
   return get(java_lang_Class::as_Klass(my_oop));
 }
 traceid JfrTraceId::use(jclass jc, bool leakp /* false */) {
   assert(jc != NULL, "invariant");
   assert(((JavaThread*)Thread::current())->thread_state() == _thread_in_vm, "invariant");
   const oop my_oop = JNIHandles::resolve(jc);
   assert(my_oop != NULL, "invariant");
   return use(java_lang_Class::as_Klass(my_oop), leakp);
 }
 bool JfrTraceId::in_visible_set(const jclass jc) {
   assert(jc != NULL, "invariant");
   assert(((JavaThread*)Thread::current())->thread_state() == _thread_in_vm, "invariant");
   const oop mirror = JNIHandles::resolve(jc);
   assert(mirror != NULL, "invariant");
   return in_visible_set(java_lang_Class::as_Klass(mirror));
 }
 bool JfrTraceId::in_jdk_jfr_event_hierarchy(const jclass jc) {
   assert(jc != NULL, "invariant");
   const oop mirror = JNIHandles::resolve(jc);
   assert(mirror != NULL, "invariant");
   return in_jdk_jfr_event_hierarchy(java_lang_Class::as_Klass(mirror));
 }
 bool JfrTraceId::is_jdk_jfr_event_sub(const jclass jc) {
   assert(jc != NULL, "invariant");
   const oop mirror = JNIHandles::resolve(jc);
   assert(mirror != NULL, "invariant");
   return is_jdk_jfr_event_sub(java_lang_Class::as_Klass(mirror));
 }
 bool JfrTraceId::is_jdk_jfr_event(const jclass jc) {
   assert(jc != NULL, "invariant");
   const oop mirror = JNIHandles::resolve(jc);
   assert(mirror != NULL, "invariant");
   return is_jdk_jfr_event(java_lang_Class::as_Klass(mirror));
 }
 bool JfrTraceId::is_event_host(const jclass jc) {
   assert(jc != NULL, "invariant");
   const oop mirror = JNIHandles::resolve(jc);
   assert(mirror != NULL, "invariant");
   return is_event_host(java_lang_Class::as_Klass(mirror));
 }
 void JfrTraceId::tag_as_jdk_jfr_event_sub(const jclass jc) {
   assert(jc != NULL, "invariant");
   const oop mirror = JNIHandles::resolve(jc);
   assert(mirror != NULL, "invariant");
   const Klass* const k = java_lang_Class::as_Klass(mirror);
   tag_as_jdk_jfr_event_sub(k);
   assert(IS_JDK_JFR_EVENT_SUBKLASS(k), "invariant");
 }
 void JfrTraceId::tag_as_event_host(const jclass jc) {
   assert(jc != NULL, "invariant");
   const oop mirror = JNIHandles::resolve(jc);
   assert(mirror != NULL, "invariant");
   const Klass* const k = java_lang_Class::as_Klass(mirror);
   tag_as_event_host(k);
   assert(IS_EVENT_HOST_KLASS(k), "invariant");
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/jfr/recorder/checkpoint/types/traceid/jfrTraceId.cpp@45c8de52649c (annotated)

src/share/vm/jfr/recorder/checkpoint/types/traceid/jfrTraceId.cpp