src/hotspot/share/gc/g1/g1HeapRegionEventSender.cpp
author sjohanss
Wed, 04 Sep 2019 09:47:55 +0200
changeset 58003 a645b2f7bece
parent 50113 caf115bb98ad
permissions -rw-r--r--
8209802: Garbage collectors should register JFR types themselves to avoid build errors. Reviewed-by: kbarrett, tschatzl
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/*
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 * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#include "precompiled.hpp"
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#include "gc/g1/g1CollectedHeap.hpp"
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#include "gc/g1/heapRegion.hpp"
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#include "g1HeapRegionEventSender.hpp"
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#include "jfr/jfrEvents.hpp"
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#include "runtime/vmThread.hpp"
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class DumpEventInfoClosure : public HeapRegionClosure {
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public:
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  bool do_heap_region(HeapRegion* r) {
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    EventG1HeapRegionInformation evt;
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    evt.set_index(r->hrm_index());
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    evt.set_type(r->get_trace_type());
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    evt.set_start((uintptr_t)r->bottom());
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    evt.set_used(r->used());
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    evt.commit();
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    return false;
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  }
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};
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class VM_G1SendHeapRegionInfoEvents : public VM_Operation {
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  virtual void doit() {
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    DumpEventInfoClosure c;
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    G1CollectedHeap::heap()->heap_region_iterate(&c);
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  }
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  virtual VMOp_Type type() const { return VMOp_HeapIterateOperation; }
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};
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void G1HeapRegionEventSender::send_events() {
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  if (UseG1GC) {
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    VM_G1SendHeapRegionInfoEvents op;
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    VMThread::execute(&op);
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  }
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}