a060be188d
Co-authored-by: Markus Gronlund <markus.gronlund@oracle.com> Reviewed-by: coleenp, ihse, erikj, dsamersoff, mseledtsov, egahlin, mgronlun
65 lines
2.3 KiB
C++
65 lines
2.3 KiB
C++
/*
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* Copyright (c) 2015, 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 "jfr/dcmd/jfrDcmds.hpp"
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#include "jfr/jfrEvents.hpp"
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#include "jfr/periodic/jfrThreadDumpEvent.hpp"
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#include "logging/log.hpp"
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#include "utilities/exceptions.hpp"
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#include "utilities/ostream.hpp"
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/**
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* Worker impl for generating and writing dcmd commands
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* as jfr events.
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* dispatch to diagnosticcommands "parse_and_execute"
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*
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* param: cmd = the DCMD to execute (including options)
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*/
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static bool execute_dcmd(bufferedStream& st, const char* const cmd) {
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Thread* THREAD = Thread::current();
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assert(!HAS_PENDING_EXCEPTION, "dcmd does not expect pending exceptions on entry!");
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// delegate to DCmd execution
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DCmd::parse_and_execute(DCmd_Source_Internal, &st, cmd, ' ', THREAD);
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if (HAS_PENDING_EXCEPTION) {
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log_debug(jfr, system)("unable to create jfr event for DCMD %s", cmd);
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log_debug(jfr, system)("exception type: %s", PENDING_EXCEPTION->klass()->external_name());
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// don't unwind this exception
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CLEAR_PENDING_EXCEPTION;
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// if exception occurred,
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// reset stream.
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st.reset();
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return false;
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}
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return true;
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}
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// caller needs ResourceMark
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const char* JfrDcmdEvent::thread_dump() {
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assert(EventThreadDump::is_enabled(), "invariant");
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bufferedStream st;
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execute_dcmd(st, "Thread.print");
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return st.as_string();
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}
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