/*

 * Copyright (c) 2012, 2015, 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.

 *

 */

#include "precompiled.hpp"

#include "gc/g1/g1Log.hpp"

#include "gc/g1/g1_globals.hpp"

#include "runtime/globals_extension.hpp"

G1Log::LogLevel G1Log::_level = G1Log::LevelNone;

// Updates _level based on PrintGC and PrintGCDetails values (unless

// G1LogLevel is set explicitly)

// - PrintGC maps to "fine".

// - PrintGCDetails maps to "finer".

void G1Log::update_level() {

  if (FLAG_IS_DEFAULT(G1LogLevel)) {

    _level = LevelNone;

    if (PrintGCDetails) {

      _level = LevelFiner;

    } else if (PrintGC) {

      _level = LevelFine;

    }

  }

}

// If G1LogLevel has not been set up we will use the values of PrintGC

// and PrintGCDetails for the logging level.

void G1Log::init() {

  if (!FLAG_IS_DEFAULT(G1LogLevel)) {

    // PrintGC flags change won't have any affect, because G1LogLevel

    // is set explicitly

    if (G1LogLevel[0] == '\0' || strncmp("none", G1LogLevel, 4) == 0 && G1LogLevel[4] == '\0') {

      _level = LevelNone;

    } else if (strncmp("fine", G1LogLevel, 4) == 0 && G1LogLevel[4] == '\0') {

      _level = LevelFine;

    } else if (strncmp("finer", G1LogLevel, 5) == 0 && G1LogLevel[5] == '\0') {

      _level = LevelFiner;

    } else if (strncmp("finest", G1LogLevel, 6) == 0 && G1LogLevel[6] == '\0') {

      _level = LevelFinest;

    } else {

      warning("Unknown logging level '%s', should be one of 'fine', 'finer' or 'finest'.", G1LogLevel);

    }

  } else {

    update_level();

  }

}