jdk8-mips64-public/hotspot: src/share/vm/jfr/leakprofiler/chains/rootSetClosure.cpp@b985cbb00e68

8223147: JFR Backport
8199712: Flight Recorder
8203346: JFR: Inconsistent signature of jfr_add_string_constant
8195817: JFR.stop should require name of recording
8195818: JFR.start should increase autogenerated name by one
8195819: Remove recording=x from jcmd JFR.check output
8203921: JFR thread sampling is missing fixes from JDK-8194552
8203929: Limit amount of data for JFR.dump
8203664: JFR start failure after AppCDS archive created with JFR StartFlightRecording
8003209: JFR events for network utilization
8207392: [PPC64] Implement JFR profiling
8202835: jfr/event/os/TestSystemProcess.java fails on missing events
Summary: Backport JFR from JDK11. Initial integration
Reviewed-by: neugens

     1 /*

     2  * Copyright (c) 2014, 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.hpp"

    27 #include "classfile/systemDictionary.hpp"

    28 #include "jfr/leakprofiler/chains/edgeQueue.hpp"

    29 #include "jfr/leakprofiler/chains/rootSetClosure.hpp"

    30 #include "jfr/leakprofiler/utilities/saveRestore.hpp"

    31 #include "jfr/leakprofiler/utilities/unifiedOop.hpp"

    32 #include "memory/universe.hpp"

    33 #include "prims/jvmtiExport.hpp"

    34 #include "runtime/jniHandles.hpp"

    35 #include "runtime/synchronizer.hpp"

    36 #include "runtime/thread.hpp"

    37 #include "services/management.hpp"

    38 #include "utilities/align.hpp"

    40 RootSetClosure::RootSetClosure(EdgeQueue* edge_queue) :

    41   _edge_queue(edge_queue) {

    42 }

    44 void RootSetClosure::do_oop(oop* ref) {

    45   assert(ref != NULL, "invariant");

    46   // We discard unaligned root references because

    47   // our reference tagging scheme will use

    48   // the lowest bit in a represented reference

    49   // to indicate the reference is narrow.

    50   // It is mainly roots delivered via nmethods::do_oops()

    51   // that come in unaligned. It should be ok to duck these

    52   // since they are supposedly weak.

    53   if (!is_aligned(ref, HeapWordSize)) {

    54     return;

    55   }

    57   assert(is_aligned(ref, HeapWordSize), "invariant");

    58   const oop pointee = *ref;

    59   if (pointee != NULL) {

    60     closure_impl(ref, pointee);

    61   }

    62 }

    64 void RootSetClosure::do_oop(narrowOop* ref) {

    65   assert(ref != NULL, "invariant");

    66   assert(is_aligned(ref, sizeof(narrowOop)), "invariant");

    67   const oop pointee = oopDesc::load_decode_heap_oop(ref);

    68   if (pointee != NULL) {

    69     closure_impl(UnifiedOop::encode(ref), pointee);

    70   }

    71 }

    73 void RootSetClosure::closure_impl(const oop* reference, const oop pointee) {

    74   if (!_edge_queue->is_full())  {

    75     _edge_queue->add(NULL, reference);

    76   }

    77 }

    79 void RootSetClosure::add_to_queue(EdgeQueue* edge_queue) {

    80   RootSetClosure rs(edge_queue);

    81   process_roots(&rs);

    82 }

    84 class RootSetClosureMarkScope : public MarkingCodeBlobClosure::MarkScope {

    85 };

    87 void RootSetClosure::process_roots(OopClosure* closure) {

    88   SaveRestoreCLDClaimBits save_restore_cld_claim_bits;

    89   RootSetClosureMarkScope mark_scope;

    91   CLDToOopClosure cldt_closure(closure);

    92   ClassLoaderDataGraph::always_strong_cld_do(&cldt_closure);

    93   CodeBlobToOopClosure blobs(closure, false);

    94   Threads::oops_do(closure, NULL, &blobs); // XXX set CLDClosure to NULL

    95   ObjectSynchronizer::oops_do(closure);

    96   Universe::oops_do(closure);

    97   JNIHandles::oops_do(closure);

    98   JvmtiExport::oops_do(closure);

    99   SystemDictionary::oops_do(closure);

   100   Management::oops_do(closure);

   101   StringTable::oops_do(closure);

   102 }

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

src/share/vm/jfr/leakprofiler/chains/rootSetClosure.cpp@b985cbb00e68

src/share/vm/jfr/leakprofiler/chains/rootSetClosure.cpp