1 /*
   2  * Copyright (c) 2016, 2017, Red Hat, Inc. All rights reserved.
   3  *
   4  * This code is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License version 2 only, as
   6  * published by the Free Software Foundation.
   7  *
   8  * This code is distributed in the hope that it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  11  * version 2 for more details (a copy is included in the LICENSE file that
  12  * accompanied this code).
  13  *
  14  * You should have received a copy of the GNU General Public License version
  15  * 2 along with this work; if not, write to the Free Software Foundation,
  16  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  17  *
  18  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  19  * or visit www.oracle.com if you need additional information or have any
  20  * questions.
  21  *
  22  */
  23 
  24 #ifndef SHARE_VM_GC_SHENANDOAH_SHENANDOAHLOGGING_HPP
  25 #define SHARE_VM_GC_SHENANDOAH_SHENANDOAHLOGGING_HPP
  26 
  27 #include <stdio.h> // for va_list and friends
  28 #include <stdarg.h>
  29 
  30 class ShenandoahLogger {
  31 public:
  32   static void handle_trace(const char* format, ...);
  33   static void handle_debug(const char* format, ...);
  34   static void handle_info(const char* format, ...);
  35   static void handle_warning(const char* format, ...);
  36 private:
  37   static void handle_generic(const char* format, va_list ap);
  38 };
  39 
  40 #define log_trace(...)   if (ShenandoahLogTrace)   ShenandoahLogger::handle_trace
  41 #define log_debug(...)   if (ShenandoahLogDebug)   ShenandoahLogger::handle_debug
  42 #define log_warning(...) if (ShenandoahLogWarning) ShenandoahLogger::handle_warning
  43 
  44 // With ShenandoahLogInfo, only print out the single-"gc"-tag messages.
  45 #define log_info(...)    if (((strcmp(#__VA_ARGS__, "gc") == 0) && (ShenandoahLogInfo  || PrintGC || PrintGCDetails)) || \
  46                              ((strcmp(#__VA_ARGS__, "gc") > 0)  && (ShenandoahLogInfo  || PrintGCDetails)) || \
  47                              ShenandoahLogDebug)  \
  48                                 ShenandoahLogger::handle_info
  49 
  50 #ifndef PRODUCT
  51 #define log_develop_trace(...) if (ShenandoahLogTrace) ShenandoahLogger::handle_trace
  52 #define log_develop_debug(...) if (ShenandoahLogDebug) ShenandoahLogger::handle_debug
  53 #else
  54 #define DUMMY_ARGUMENT_CONSUMER(...)
  55 #define log_develop_trace(...) DUMMY_ARGUMENT_CONSUMER
  56 #define log_develop_debug(...) DUMMY_ARGUMENT_CONSUMER
  57 #endif
  58 
  59 #endif