--- /dev/null 2015-06-13 09:00:41.000000000 -0500 +++ new/src/share/vm/runtime/commandLineFlagConstraintsGC.cpp 2015-06-13 09:00:41.000000000 -0500 @@ -0,0 +1,235 @@ +/* + * Copyright (c) 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 "runtime/arguments.hpp" +#include "runtime/commandLineFlagConstraintsGC.hpp" +#include "runtime/globals.hpp" +#include "utilities/defaultStream.hpp" + +#if INCLUDE_ALL_GCS +#include "gc/g1/g1_globals.hpp" +#endif // INCLUDE_ALL_GCS +#ifdef COMPILER1 +#include "c1/c1_globals.hpp" +#endif // COMPILER1 +#ifdef COMPILER2 +#include "opto/c2_globals.hpp" +#endif // COMPILER2 + +Flag::Error MinHeapFreeRatioConstraintFunc(bool verbose, uintx* value) { + if ((CommandLineFlags::finishedInitializing()) && (*value > MaxHeapFreeRatio)) { + if (verbose == true) { + jio_fprintf(defaultStream::error_stream(), + "MinHeapFreeRatio (" UINTX_FORMAT ") must be less than or " + "equal to MaxHeapFreeRatio (" UINTX_FORMAT ")\n", + *value, MaxHeapFreeRatio); + } + return Flag::VIOLATES_CONSTRAINT; + } else { + return Flag::SUCCESS; + } +} + +Flag::Error MaxHeapFreeRatioConstraintFunc(bool verbose, uintx* value) { + if ((CommandLineFlags::finishedInitializing()) && (*value < MinHeapFreeRatio)) { + if (verbose == true) { + jio_fprintf(defaultStream::error_stream(), + "MaxHeapFreeRatio (" UINTX_FORMAT ") must be greater than or " + "equal to MinHeapFreeRatio (" UINTX_FORMAT ")\n", + *value, MinHeapFreeRatio); + } + return Flag::VIOLATES_CONSTRAINT; + } else { + return Flag::SUCCESS; + } +} + +Flag::Error MinMetaspaceFreeRatioConstraintFunc(bool verbose, uintx* value) { + if ((CommandLineFlags::finishedInitializing()) && (*value > MaxMetaspaceFreeRatio)) { + if (verbose == true) { + jio_fprintf(defaultStream::error_stream(), + "MinMetaspaceFreeRatio (" UINTX_FORMAT ") must be less than or " + "equal to MaxMetaspaceFreeRatio (" UINTX_FORMAT ")\n", + *value, MaxMetaspaceFreeRatio); + } + return Flag::VIOLATES_CONSTRAINT; + } else { + return Flag::SUCCESS; + } +} + +Flag::Error MaxMetaspaceFreeRatioConstraintFunc(bool verbose, uintx* value) { + if ((CommandLineFlags::finishedInitializing()) && (*value < MinMetaspaceFreeRatio)) { + if (verbose == true) { + jio_fprintf(defaultStream::error_stream(), + "MaxMetaspaceFreeRatio (" UINTX_FORMAT ") must be greater than or " + "equal to MinMetaspaceFreeRatio (" UINTX_FORMAT ")\n", + *value, MinMetaspaceFreeRatio); + } + return Flag::VIOLATES_CONSTRAINT; + } else { + return Flag::SUCCESS; + } +} + +// GC workaround for "-XX:+UseConcMarkSweepGC" +// which sets InitialTenuringThreshold to 7 but leaves MaxTenuringThreshold remaining at 6 +// and therefore would invalidate the constraint +#define UseConcMarkSweepGCWorkaroundIfNeeded(initial, max) { \ + if ((initial == 7) && (max == 6)) { \ + return Flag::SUCCESS; \ + } \ +} + +Flag::Error InitialTenuringThresholdConstraintFunc(bool verbose, uintx* value) { + UseConcMarkSweepGCWorkaroundIfNeeded(*value, MaxTenuringThreshold); + + if ((CommandLineFlags::finishedInitializing()) && (*value > MaxTenuringThreshold)) { + if (verbose == true) { + jio_fprintf(defaultStream::error_stream(), + "InitialTenuringThreshold (" UINTX_FORMAT ") must be less than or " + "equal to MaxTenuringThreshold (" UINTX_FORMAT ")\n", + *value, MaxTenuringThreshold); + } + return Flag::VIOLATES_CONSTRAINT; + } else { + return Flag::SUCCESS; + } +} + +Flag::Error MaxTenuringThresholdConstraintFunc(bool verbose, uintx* value) { + UseConcMarkSweepGCWorkaroundIfNeeded(InitialTenuringThreshold, *value); + + if ((CommandLineFlags::finishedInitializing()) && (*value < InitialTenuringThreshold)) { + if (verbose == true) { + jio_fprintf(defaultStream::error_stream(), + "MaxTenuringThreshold (" UINTX_FORMAT ") must be greater than or " + "equal to InitialTenuringThreshold (" UINTX_FORMAT ")\n", + *value, InitialTenuringThreshold); + } + return Flag::VIOLATES_CONSTRAINT; + } else { + return Flag::SUCCESS; + } +} + +#if INCLUDE_ALL_GCS + +Flag::Error G1NewSizePercentConstraintFunc(bool verbose, uintx* value) { + if ((CommandLineFlags::finishedInitializing()) && (*value > G1MaxNewSizePercent)) { + if (verbose == true) { + jio_fprintf(defaultStream::error_stream(), + "G1NewSizePercent (" UINTX_FORMAT ") must be less than or " + "equal to G1MaxNewSizePercent (" UINTX_FORMAT ")\n", + *value, G1MaxNewSizePercent); + } + return Flag::VIOLATES_CONSTRAINT; + } else { + return Flag::SUCCESS; + } +} + +Flag::Error G1MaxNewSizePercentConstraintFunc(bool verbose, uintx* value) { + if ((CommandLineFlags::finishedInitializing()) && (*value < G1NewSizePercent)) { + if (verbose == true) { + jio_fprintf(defaultStream::error_stream(), + "G1MaxNewSizePercent (" UINTX_FORMAT ") must be greater than or " + "equal to G1NewSizePercent (" UINTX_FORMAT ")\n", + *value, G1NewSizePercent); + } + return Flag::VIOLATES_CONSTRAINT; + } else { + return Flag::SUCCESS; + } +} + +#endif // INCLUDE_ALL_GCS + +Flag::Error CMSOldPLABMinConstraintFunc(bool verbose, size_t* value) { + if ((CommandLineFlags::finishedInitializing()) && (*value > CMSOldPLABMax)) { + if (verbose == true) { + jio_fprintf(defaultStream::error_stream(), + "CMSOldPLABMin (" SIZE_FORMAT ") must be less than or " + "equal to CMSOldPLABMax (" SIZE_FORMAT ")\n", + *value, CMSOldPLABMax); + } + return Flag::VIOLATES_CONSTRAINT; + } else { + return Flag::SUCCESS; + } +} + +Flag::Error CMSPrecleanDenominatorConstraintFunc(bool verbose, uintx* value) { + if ((CommandLineFlags::finishedInitializing()) && (*value <= CMSPrecleanNumerator)) { + if (verbose == true) { + jio_fprintf(defaultStream::error_stream(), + "CMSPrecleanDenominator (" UINTX_FORMAT ") must be strickly greater than " + "CMSPrecleanNumerator (" UINTX_FORMAT ")\n", + *value, CMSPrecleanNumerator); + } + return Flag::VIOLATES_CONSTRAINT; + } else { + return Flag::SUCCESS; + } +} + +Flag::Error CMSPrecleanNumeratorConstraintFunc(bool verbose, uintx* value) { + if ((CommandLineFlags::finishedInitializing()) && (*value > (CMSPrecleanDenominator - 1))) { + if (verbose == true) { + jio_fprintf(defaultStream::error_stream(), + "CMSPrecleanNumerator (" UINTX_FORMAT ") must be less than or " + "equal to CMSPrecleanDenominator - 1 (" UINTX_FORMAT ")\n", *value, + CMSPrecleanDenominator - 1); + } + return Flag::VIOLATES_CONSTRAINT; + } else { + return Flag::SUCCESS; + } +} + +Flag::Error SurvivorAlignmentInBytesConstraintFunc(bool verbose, intx* value) { + if (CommandLineFlags::finishedInitializing()) { + if (*value != 0) { + if (!is_power_of_2(*value)) { + if (verbose == true) { + jio_fprintf(defaultStream::error_stream(), + "SurvivorAlignmentInBytes (" INTX_FORMAT ") must be power of 2\n", + *value); + } + return Flag::VIOLATES_CONSTRAINT; + } + if (*value < ObjectAlignmentInBytes) { + if (verbose == true) { + jio_fprintf(defaultStream::error_stream(), + "SurvivorAlignmentInBytes (" INTX_FORMAT ") must be greater than or " + "equal to ObjectAlignmentInBytes (" INTX_FORMAT ") \n", + *value, ObjectAlignmentInBytes); + } + return Flag::VIOLATES_CONSTRAINT; + } + } + } + return Flag::SUCCESS; +}