jdk8-mips64-public/hotspot: src/share/vm/jfr/recorder/checkpoint/types/traceid/jfrTraceId.cpp@a248d0be1309

8229401: Fix JFR code cache test failures
8223689: Add JFR Thread Sampling Support
8223690: Add JFR BiasedLock Event Support
8223691: Add JFR G1 Region Type Change Event Support
8223692: Add JFR G1 Heap Summary Event Support
Summary: Backport JFR from JDK11, additional fixes
Reviewed-by: neugens, apetushkov
Contributed-by: denghui.ddh@alibaba-inc.com

     1 /*

     2  * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #include "precompiled.hpp"

    26 #include "classfile/classLoaderData.inline.hpp"

    27 #include "classfile/symbolTable.hpp"

    28 #include "jfr/recorder/checkpoint/types/traceid/jfrTraceId.inline.hpp"

    29 #include "jfr/utilities/jfrTypes.hpp"

    30 #include "oops/arrayKlass.hpp"

    31 #include "oops/klass.inline.hpp"

    32 #include "oops/instanceKlass.hpp"

    33 #include "oops/method.hpp"

    34 #include "oops/oop.inline.hpp"

    35 #include "runtime/atomic.inline.hpp"

    36 #include "runtime/orderAccess.inline.hpp"

    37 #include "runtime/vm_version.hpp"

    38 #include "runtime/jniHandles.hpp"

    39 #include "runtime/thread.inline.hpp"

    40 #include "utilities/debug.hpp"

    42  // returns updated value

    43 static traceid atomic_inc(traceid volatile* const dest) {

    44   return (traceid) atomic_add_jlong(1, (jlong volatile*) dest);

    45 }

    47 static traceid next_class_id() {

    48   static volatile traceid class_id_counter = MaxJfrEventId + 100;

    49   return atomic_inc(&class_id_counter) << TRACE_ID_SHIFT;

    50 }

    52 static traceid next_thread_id() {

    53 #ifdef _LP64

    54   static volatile traceid thread_id_counter = 0;

    55   return atomic_inc(&thread_id_counter);

    56 #else

    57   static volatile jint thread_id_counter = 0;

    58   assert(thread_id_counter >= 0 && thread_id_counter < INT_MAX, "thread counter has been overflown");

    59   Atomic::inc(&thread_id_counter);

    60   return (traceid) thread_id_counter;

    61 #endif

    62 }

    64 // XXX

    65 // static traceid next_package_id() {

    66 //   static volatile traceid package_id_counter = 1;

    67 //   return atomic_inc(&package_id_counter) << TRACE_ID_SHIFT;

    68 // }

    70 static traceid next_class_loader_data_id() {

    71   static volatile traceid cld_id_counter = 1;

    72   return atomic_inc(&cld_id_counter) << TRACE_ID_SHIFT;

    73 }

    75 static bool found_jdk_jfr_event_klass = false;

    77 static void check_klass(const Klass* klass) {

    78   assert(klass != NULL, "invariant");

    79   if (found_jdk_jfr_event_klass) {

    80     return;

    81   }

    82   static const Symbol* jdk_jfr_event_sym = NULL;

    83   if (jdk_jfr_event_sym == NULL) {

    84     // setup when loading the first TypeArrayKlass (Universe::genesis) hence single threaded invariant

    85     jdk_jfr_event_sym = SymbolTable::new_permanent_symbol("jdk/jfr/Event", Thread::current());

    86   }

    87   assert(jdk_jfr_event_sym != NULL, "invariant");

    88   if (jdk_jfr_event_sym == klass->name()/* XXX && klass->class_loader() == NULL*/) {

    89     found_jdk_jfr_event_klass = true;

    90     JfrTraceId::tag_as_jdk_jfr_event(klass);

    91   }

    92 }

    94 void JfrTraceId::assign(const Klass* klass) {

    95   assert(klass != NULL, "invariant");

    96   klass->set_trace_id(next_class_id());

    97   check_klass(klass);

    98   const Klass* const super = klass->super();

    99   if (super == NULL) {

   100     return;

   101   }

   102   if (IS_EVENT_KLASS(super)) {

   103     tag_as_jdk_jfr_event_sub(klass);

   104   }

   105 }

   107 // XXX

   108 // void JfrTraceId::assign(const PackageEntry* package) {

   109 //   assert(package != NULL, "invariant");

   110 //   package->set_trace_id(next_package_id());

   111 // }

   113 void JfrTraceId::assign(const ClassLoaderData* cld) {

   114   assert(cld != NULL, "invariant");

   115   if (cld->is_anonymous()) {

   116     cld->set_trace_id(0);

   117     return;

   118   }

   119   cld->set_trace_id(next_class_loader_data_id());

   120 }

   122 traceid JfrTraceId::assign_thread_id() {

   123   return next_thread_id();

   124 }

   126 // used by CDS / APPCDS as part of "remove_unshareable_info"

   127 void JfrTraceId::remove(const Klass* k) {

   128   assert(k != NULL, "invariant");

   129   // Mask off and store the event flags.

   130   // This mechanism will retain the event specific flags

   131   // in the archive, allowing for event flag restoration

   132   // when renewing the traceid on klass revival.

   133   k->set_trace_id(EVENT_FLAGS_MASK(k));

   134 }

   136 // used by CDS / APPCDS as part of "restore_unshareable_info"

   137 void JfrTraceId::restore(const Klass* k) {

   138   assert(k != NULL, "invariant");

   139   if (IS_JDK_JFR_EVENT_KLASS(k)) {

   140     found_jdk_jfr_event_klass = true;

   141   }

   142   const traceid event_flags = k->trace_id();

   143   // get a fresh traceid and restore the original event flags

   144   k->set_trace_id(next_class_id() | event_flags);

   145 }

   147 traceid JfrTraceId::get(jclass jc) {

   148   assert(jc != NULL, "invariant");

   149   assert(((JavaThread*)Thread::current())->thread_state() == _thread_in_vm, "invariant");

   150   const oop my_oop = JNIHandles::resolve(jc);

   151   assert(my_oop != NULL, "invariant");

   152   return get(java_lang_Class::as_Klass(my_oop));

   153 }

   155 traceid JfrTraceId::use(jclass jc, bool leakp /* false */) {

   156   assert(jc != NULL, "invariant");

   157   assert(((JavaThread*)Thread::current())->thread_state() == _thread_in_vm, "invariant");

   158   const oop my_oop = JNIHandles::resolve(jc);

   159   assert(my_oop != NULL, "invariant");

   160   return use(java_lang_Class::as_Klass(my_oop), leakp);

   161 }

   163 bool JfrTraceId::in_visible_set(const jclass jc) {

   164   assert(jc != NULL, "invariant");

   165   assert(((JavaThread*)Thread::current())->thread_state() == _thread_in_vm, "invariant");

   166   const oop mirror = JNIHandles::resolve(jc);

   167   assert(mirror != NULL, "invariant");

   168   return in_visible_set(java_lang_Class::as_Klass(mirror));

   169 }

   171 bool JfrTraceId::in_jdk_jfr_event_hierarchy(const jclass jc) {

   172   assert(jc != NULL, "invariant");

   173   const oop mirror = JNIHandles::resolve(jc);

   174   assert(mirror != NULL, "invariant");

   175   return in_jdk_jfr_event_hierarchy(java_lang_Class::as_Klass(mirror));

   176 }

   178 bool JfrTraceId::is_jdk_jfr_event_sub(const jclass jc) {

   179   assert(jc != NULL, "invariant");

   180   const oop mirror = JNIHandles::resolve(jc);

   181   assert(mirror != NULL, "invariant");

   182   return is_jdk_jfr_event_sub(java_lang_Class::as_Klass(mirror));

   183 }

   185 bool JfrTraceId::is_jdk_jfr_event(const jclass jc) {

   186   assert(jc != NULL, "invariant");

   187   const oop mirror = JNIHandles::resolve(jc);

   188   assert(mirror != NULL, "invariant");

   189   return is_jdk_jfr_event(java_lang_Class::as_Klass(mirror));

   190 }

   192 bool JfrTraceId::is_event_host(const jclass jc) {

   193   assert(jc != NULL, "invariant");

   194   const oop mirror = JNIHandles::resolve(jc);

   195   assert(mirror != NULL, "invariant");

   196   return is_event_host(java_lang_Class::as_Klass(mirror));

   197 }

   199 void JfrTraceId::tag_as_jdk_jfr_event_sub(const jclass jc) {

   200   assert(jc != NULL, "invariant");

   201   const oop mirror = JNIHandles::resolve(jc);

   202   assert(mirror != NULL, "invariant");

   203   const Klass* const k = java_lang_Class::as_Klass(mirror);

   204   tag_as_jdk_jfr_event_sub(k);

   205   assert(IS_JDK_JFR_EVENT_SUBKLASS(k), "invariant");

   206 }

   208 void JfrTraceId::tag_as_event_host(const jclass jc) {

   209   assert(jc != NULL, "invariant");

   210   const oop mirror = JNIHandles::resolve(jc);

   211   assert(mirror != NULL, "invariant");

   212   const Klass* const k = java_lang_Class::as_Klass(mirror);

   213   tag_as_event_host(k);

   214   assert(IS_EVENT_HOST_KLASS(k), "invariant");

   215 }

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/jfr/recorder/checkpoint/types/traceid/jfrTraceId.cpp@a248d0be1309

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