1 /*
   2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 #include "precompiled.hpp"
  25 #include "logging/logDecorators.hpp"
  26 #include "logging/logDecorations.hpp"
  27 #include "logging/logFileStreamOutput.hpp"
  28 #include "memory/allocation.inline.hpp"
  29 
  30 LogStdoutOutput LogStdoutOutput::_instance;
  31 LogStderrOutput LogStderrOutput::_instance;
  32 
  33 int LogFileStreamOutput::write(const LogDecorations& decorations, const char* msg) {
  34   char decoration_buf[LogDecorations::DecorationsBufferSize];
  35   char* position = decoration_buf;
  36   int total_written = 0;
  37 
  38   for (uint i = 0; i < LogDecorators::Count; i++) {
  39     LogDecorators::Decorator decorator = static_cast<LogDecorators::Decorator>(i);
  40     if (!_decorators.is_decorator(decorator)) {
  41       continue;
  42     }
  43     int written = jio_snprintf(position, sizeof(decoration_buf) - total_written, "[%-*s]",
  44                                _decorator_padding[decorator],
  45                                decorations.decoration(decorator));
  46     if (written <= 0) {
  47       return -1;
  48     } else if (static_cast<size_t>(written - 2) > _decorator_padding[decorator]) {
  49       _decorator_padding[decorator] = written - 2;
  50     }
  51     position += written;
  52     total_written += written;
  53   }
  54 
  55   if (total_written == 0) {
  56     total_written = jio_fprintf(_stream, "%s\n", msg);
  57   } else {
  58     total_written = jio_fprintf(_stream, "%s %s\n", decoration_buf, msg);
  59   }
  60   fflush(_stream);
  61   return total_written;
  62 }