src/share/vm/runtime/arguments.cpp

*** 81,90 ****
--- 81,91 ----
  int    Arguments::_num_jvm_flags                = 0;
  char** Arguments::_jvm_args_array               = NULL;
  int    Arguments::_num_jvm_args                 = 0;
  char*  Arguments::_java_command                 = NULL;
  SystemProperty* Arguments::_system_properties   = NULL;
+ const char*  Arguments::_gc_log_filename        = NULL;
  bool   Arguments::_has_profile                  = false;
  size_t Arguments::_conservative_max_heap_alignment = 0;
  size_t Arguments::_min_heap_size                = 0;
  Arguments::Mode Arguments::_mode                = _mixed;
  bool   Arguments::_java_compiler                = false;
*** 3088,3097 ****
--- 3089,3102 ----
        // note this flag has been used, then ignore
        set_xdebug_mode(true);
      // -Xnoagent
      } else if (match_option(option, "-Xnoagent")) {
        // For compatibility with classic. HotSpot refuses to load the old style agent.dll.
+     } else if (match_option(option, "-Xloggc:", &tail)) {
+       // Deprecated flag to redirect GC output to a file. -Xloggc:<filename>
+       log_warning(gc)("-Xloggc is deprecated. Will use -Xlog:gc:%s instead.", tail);
+       _gc_log_filename = os::strdup_check_oom(tail);
      } else if (match_option(option, "-Xlog", &tail)) {
        bool ret = false;
        if (strcmp(tail, ":help") == 0) {
          LogConfiguration::print_command_line_help(defaultStream::output_stream());
          vm_exit(0);
*** 3997,4006 ****
--- 4002,4029 ----
        logOption(tail);
      }
    }
  }
  
+ bool Arguments::handle_deprecated_print_gc_flags() {
+   if (PrintGC) {
+     log_warning(gc)("-XX:+PrintGC is deprecated. Will use -Xlog:gc instead.");
+   }
+   if (PrintGCDetails) {
+     log_warning(gc)("-XX:+PrintGCDetails is deprecated. Will use -Xlog:gc* instead.");
+   }
+ 
+   if (_gc_log_filename != NULL) {
+     // -Xloggc was used to specify a filename
+     const char* gc_conf = PrintGCDetails ? "gc*" : "gc";
+     return  LogConfiguration::parse_log_arguments(_gc_log_filename, gc_conf, NULL, NULL, NULL);
+   } else if (PrintGC || PrintGCDetails) {
+     LogConfiguration::configure_stdout(LogLevel::Info, !PrintGCDetails, LOG_TAGS(gc));
+   }
+   return true;
+ }
+ 
  // Parse entry point called from JNI_CreateJavaVM
  
  jint Arguments::parse(const JavaVMInitArgs* initial_cmd_args) {
    assert(verify_special_jvm_flags(), "deprecated and obsolete flag table inconsistent");
  
*** 4145,4154 ****
--- 4168,4181 ----
        warning("Forcing ScavengeRootsInCode non-zero");
      }
      ScavengeRootsInCode = 1;
    }
  
+   if (!handle_deprecated_print_gc_flags()) {
+     return JNI_EINVAL;
+   }
+ 
    // Set object alignment values.
    set_object_alignment();
  
  #if !INCLUDE_ALL_GCS
    force_serial_gc();