JDK14/Java14源码在线阅读

/*
 * Copyright (c) 2015, 2018, 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.
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#include "precompiled.hpp"
#include "gc/parallel/jvmFlagConstraintsParallel.hpp"
#include "runtime/globals.hpp"
#include "utilities/globalDefinitions.hpp"

JVMFlag::Error ParallelGCThreadsConstraintFuncParallel(uint value, bool verbose) {
  // Parallel GC passes ParallelGCThreads when creating GrowableArray as 'int' type parameter.
  // So can't exceed with "max_jint"

  if (UseParallelGC && (value > (uint)max_jint)) {
    JVMFlag::printError(verbose,
                        "ParallelGCThreads (" UINT32_FORMAT ") must be "
                        "less than or equal to " UINT32_FORMAT " for Parallel GC\n",
                        value, max_jint);
    return JVMFlag::VIOLATES_CONSTRAINT;
  }
  return JVMFlag::SUCCESS;
}

JVMFlag::Error InitialTenuringThresholdConstraintFuncParallel(uintx value, bool verbose) {
  // InitialTenuringThreshold is only used for ParallelGC.
  if (UseParallelGC && (value > MaxTenuringThreshold)) {
      JVMFlag::printError(verbose,
                          "InitialTenuringThreshold (" UINTX_FORMAT ") must be "
                          "less than or equal to MaxTenuringThreshold (" UINTX_FORMAT ")\n",
                          value, MaxTenuringThreshold);
      return JVMFlag::VIOLATES_CONSTRAINT;
  }
  return JVMFlag::SUCCESS;
}

JVMFlag::Error MaxTenuringThresholdConstraintFuncParallel(uintx value, bool verbose) {
  // As only ParallelGC uses InitialTenuringThreshold,
  // we don't need to compare InitialTenuringThreshold with MaxTenuringThreshold.
  if (UseParallelGC && (value < InitialTenuringThreshold)) {
    JVMFlag::printError(verbose,

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