hotspot/src/share/vm/gc_implementation/g1/g1Log.cpp
author tschatzl
Mon, 20 Jan 2014 11:47:07 +0100
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parent 12378 ed44b9ecfa2f
child 30574 c38efb747c8a
permissions -rw-r--r--
8027476: Improve performance of Stringtable unlink 8027455: Improve symbol table scan times during gc pauses Summary: Parallelize string table and symbol table scan during remark and full GC. Some additional statistics output if the experimental flag G1TraceStringSymbolTableScrubbing is set. Reviewed-by: mgerdin, coleenp, brutisso
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/*
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 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#include "precompiled.hpp"
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#include "gc_implementation/g1/g1_globals.hpp"
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#include "gc_implementation/g1/g1Log.hpp"
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#include "runtime/globals.hpp"
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G1Log::LogLevel G1Log::_level = G1Log::LevelNone;
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// If G1LogLevel has not been set up we will use the values of PrintGC
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// and PrintGCDetails for the logging level.
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// - PrintGC maps to "fine".
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// - PrintGCDetails maps to "finer".
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void G1Log::init() {
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  if (G1LogLevel != NULL && G1LogLevel[0] != '\0') {
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    if (strncmp("none", G1LogLevel, 4) == 0 && G1LogLevel[4] == '\0') {
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      _level = LevelNone;
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    } else if (strncmp("fine", G1LogLevel, 4) == 0 && G1LogLevel[4] == '\0') {
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      _level = LevelFine;
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    } else if (strncmp("finer", G1LogLevel, 5) == 0 && G1LogLevel[5] == '\0') {
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      _level = LevelFiner;
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    } else if (strncmp("finest", G1LogLevel, 6) == 0 && G1LogLevel[6] == '\0') {
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      _level = LevelFinest;
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    } else {
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      warning("Unknown logging level '%s', should be one of 'fine', 'finer' or 'finest'.", G1LogLevel);
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    }
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  } else {
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    if (PrintGCDetails) {
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      _level = LevelFiner;
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    } else if (PrintGC) {
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      _level = LevelFine;
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    }
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  }
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}