src/share/vm/runtime/arguments.cpp

*** 1904,1928 ****
  #endif // INCLUDE_ALL_GCS
  
  // check if do gclog rotation
  // +UseGCLogFileRotation is a must,
  // no gc log rotation when log file not supplied or
! // NumberOfGCLogFiles is 0, or GCLogFileSize is 0
  void check_gclog_consistency() {
    if (UseGCLogFileRotation) {
!     if ((Arguments::gc_log_filename() == NULL) ||
!         (NumberOfGCLogFiles == 0)  ||
!         (GCLogFileSize == 0)) {
        jio_fprintf(defaultStream::output_stream(),
!                   "To enable GC log rotation, use -Xloggc:<filename> -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=<num_of_files> -XX:GCLogFileSize=<num_of_size>[k|K|m|M|g|G]\n"
!                   "where num_of_file > 0 and num_of_size > 0\n"
                    "GC log rotation is turned off\n");
        UseGCLogFileRotation = false;
      }
    }
  
!   if (UseGCLogFileRotation && GCLogFileSize < 8*K) {
          FLAG_SET_CMDLINE(uintx, GCLogFileSize, 8*K);
          jio_fprintf(defaultStream::output_stream(),
                      "GCLogFileSize changed to minimum 8K\n");
    }
  }
--- 1904,1926 ----
  #endif // INCLUDE_ALL_GCS
  
  // check if do gclog rotation
  // +UseGCLogFileRotation is a must,
  // no gc log rotation when log file not supplied or
! // NumberOfGCLogFiles is 0
  void check_gclog_consistency() {
    if (UseGCLogFileRotation) {
!     if ((Arguments::gc_log_filename() == NULL) || (NumberOfGCLogFiles == 0)) {
        jio_fprintf(defaultStream::output_stream(),
!                   "To enable GC log rotation, use -Xloggc:<filename> -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=<num_of_files>\n"
!                   "where num_of_file > 0\n"
                    "GC log rotation is turned off\n");
        UseGCLogFileRotation = false;
      }
    }
  
!   if (UseGCLogFileRotation && (GCLogFileSize != 0) && (GCLogFileSize < 8*K)) {
      FLAG_SET_CMDLINE(uintx, GCLogFileSize, 8*K);
      jio_fprintf(defaultStream::output_stream(),
                  "GCLogFileSize changed to minimum 8K\n");
    }
  }