view src/share/vm/logging/logTag.hpp @ 10487:c558850fac57

8142968: Module System implementation Summary: Initial integration of JEP 200, JEP 260, JEP 261, and JEP 282 Reviewed-by: acorn, ccheung, coleenp, ctornqvi, dholmes, dsimms, gtriantafill, iklam, jiangli, mgronlun, mseledtsov, cjplummer, sspitsyn, stefank, twisti, hseigel, lfoltan, alanb, mchung, dfazunen Contributed-by: alan.bateman@oracle.com, alex.buckley@oracle.com, jonathan.gibbons@oracle.com, karen.kinnear@oracle.com, mandy.chung@oracle.com, mark.reinhold@oracle.com, harold.seigel@oracle.com, lois.foltan@oracle.com, calvin.cheung@oracle.com, christian.tornqvist@oracle.com, erik.joelsson@oracle.com, george.triantafillou@oracle.com, igor.ignatyev@oracle.com, ioi.lam@oracle.com, james.laskey@oracle.com, jean-francois.denise@oracle.com, jiangli.zhou@oracle.com, markus.gronlund@oracle.com, serguei.spitsyn@oracle.com, staffan.larsen@oracle.com, sundararajan.athijegannathan@oracle.com
author alanb
date Thu, 17 Mar 2016 19:04:01 +0000
parents 62d355fd1283
children 906fa01e86a0
line wrap: on
line source
/*
 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * 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.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * 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
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 *
 */
#ifndef SHARE_VM_LOGGING_LOGTAG_HPP
#define SHARE_VM_LOGGING_LOGTAG_HPP

#include "memory/allocation.hpp"
#include "utilities/globalDefinitions.hpp"

// List of available logging tags. New tags should be added here.
// (The tags 'all', 'disable' and 'help' are special tags that can
// not be used in log calls, and should not be listed below.)
#define LOG_TAG_LIST \
  LOG_TAG(alloc) \
  LOG_TAG(age) \
  LOG_TAG(barrier) \
  LOG_TAG(biasedlocking) \
  LOG_TAG(bot) \
  LOG_TAG(census) \
  LOG_TAG(classhisto) \
  LOG_TAG(classresolve) \
  LOG_TAG(classinit) \
  LOG_TAG(classload) /* Trace all classes loaded */ \
  LOG_TAG(classloaderdata) /* class loader loader_data lifetime */ \
  LOG_TAG(classunload) /* Trace unloading of classes */ \
  LOG_TAG(classpath) \
  LOG_TAG(compaction) \
  LOG_TAG(cpu) \
  LOG_TAG(cset) \
  LOG_TAG(defaultmethods) \
  LOG_TAG(ergo) \
  LOG_TAG(exceptions) \
  LOG_TAG(exit) \
  LOG_TAG(freelist) \
  LOG_TAG(gc) \
  LOG_TAG(heap) \
  LOG_TAG(humongous) \
  LOG_TAG(ihop) \
  LOG_TAG(itables) \
  LOG_TAG(jni) \
  LOG_TAG(liveness) \
  LOG_TAG(logging) \
  LOG_TAG(marking) \
  LOG_TAG(metaspace) \
  LOG_TAG(modules) \
  LOG_TAG(monitorinflation) \
  LOG_TAG(os) \
  LOG_TAG(phases) \
  LOG_TAG(plab) \
  LOG_TAG(promotion) \
  LOG_TAG(protectiondomain) /* "Trace protection domain verification" */ \
  LOG_TAG(ref) \
  LOG_TAG(refine) \
  LOG_TAG(region) \
  LOG_TAG(remset) \
  LOG_TAG(safepoint) \
  LOG_TAG(scavenge) \
  LOG_TAG(scrub) \
  LOG_TAG(start) \
  LOG_TAG(startuptime) \
  LOG_TAG(state) \
  LOG_TAG(stats) \
  LOG_TAG(stringdedup) \
  LOG_TAG(survivor) \
  LOG_TAG(sweep) \
  LOG_TAG(task) \
  LOG_TAG(thread) \
  LOG_TAG(tlab) \
  LOG_TAG(time) \
  LOG_TAG(verify) \
  LOG_TAG(vmoperation) \
  LOG_TAG(vtables)

#define PREFIX_LOG_TAG(T) (LogTag::_##T)

// Expand a set of log tags to their prefixed names.
// For error detection purposes, the macro passes one more tag than what is supported.
// If too many tags are given, a static assert in the log class will fail.
#define LOG_TAGS_EXPANDED(T0, T1, T2, T3, T4, T5, ...)  PREFIX_LOG_TAG(T0), PREFIX_LOG_TAG(T1), PREFIX_LOG_TAG(T2), \
                                                        PREFIX_LOG_TAG(T3), PREFIX_LOG_TAG(T4), PREFIX_LOG_TAG(T5)
// The EXPAND_VARARGS macro is required for MSVC, or it will resolve the LOG_TAGS_EXPANDED macro incorrectly.
#define EXPAND_VARARGS(x) x
#define LOG_TAGS(...) EXPAND_VARARGS(LOG_TAGS_EXPANDED(__VA_ARGS__, _NO_TAG, _NO_TAG, _NO_TAG, _NO_TAG, _NO_TAG, _NO_TAG))

// Log tags are used to classify log messages.
// Each log message can be assigned between 1 to LogTag::MaxTags number of tags.
// Specifying multiple tags for a log message means that only outputs configured
// for those exact tags, or a subset of the tags with a wildcard, will see the logging.
// Multiple tags should be comma separated, e.g. log_error(tag1, tag2)("msg").
class LogTag : public AllStatic {
 public:
  // The maximum number of tags that a single log message can have.
  // E.g. there might be hundreds of different tags available,
  // but a specific log message can only be tagged with up to MaxTags of those.
  static const size_t MaxTags = 5;

  enum type {
    __NO_TAG,
#define LOG_TAG(name) _##name,
    LOG_TAG_LIST
#undef LOG_TAG
    Count
  };

  static const char* name(LogTag::type tag) {
    return _name[tag];
  }

  static LogTag::type from_string(const char *str);

 private:
  static const char* _name[];
};

typedef LogTag::type LogTagType;

#endif // SHARE_VM_LOGGING_LOGTAG_HPP