view hotspot/src/share/vm/utilities/events.cpp @ 46545:b970b6e40209

8181450: assert in BasicHashtable::verify_table Summary: remove assert as it has small probability of happening and added logging Reviewed-by: kbarrett, sspitsyn
author coleenp
date Fri, 16 Jun 2017 09:13:56 -0400
parents 48000028382c
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 * 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.
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 * 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
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 * questions.

#include "precompiled.hpp"
#include "memory/allocation.inline.hpp"
#include "runtime/mutexLocker.hpp"
#include "runtime/os.inline.hpp"
#include "runtime/osThread.hpp"
#include "runtime/thread.inline.hpp"
#include "runtime/threadCritical.hpp"
#include "runtime/timer.hpp"
#include "utilities/events.hpp"

EventLog* Events::_logs = NULL;
StringEventLog* Events::_messages = NULL;
StringEventLog* Events::_exceptions = NULL;
StringEventLog* Events::_redefinitions = NULL;
StringEventLog* Events::_deopt_messages = NULL;

EventLog::EventLog() {
  // This normally done during bootstrap when we're only single
  // threaded but use a ThreadCritical to ensure inclusion in case
  // some are created slightly late.
  ThreadCritical tc;
  _next = Events::_logs;
  Events::_logs = this;

// For each registered event logger, print out the current contents of
// the buffer.  This is normally called when the JVM is crashing.
void Events::print_all(outputStream* out) {
  EventLog* log = _logs;
  while (log != NULL) {
    log = log->next();

void Events::print() {

void Events::init() {
  if (LogEvents) {
    _messages = new StringEventLog("Events");
    _exceptions = new StringEventLog("Internal exceptions");
    _redefinitions = new StringEventLog("Classes redefined");
    _deopt_messages = new StringEventLog("Deoptimization events");

void eventlog_init() {

// EventMark

EventMark::EventMark(const char* format, ...) {
  if (LogEvents) {
    va_list ap;
    va_start(ap, format);
    // Save a copy of begin message and log it.
    _buffer.printv(format, ap);
    Events::log(NULL, "%s", _buffer.buffer());

EventMark::~EventMark() {
  if (LogEvents) {
    // Append " done" to the begin message and log it
    _buffer.append(" done");
    Events::log(NULL, "%s", _buffer.buffer());