| /* |
| * Copyright (c) 2015, 2016 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/commandLineFlagConstraintsRuntime.hpp" |
| #include "runtime/commandLineFlagRangeList.hpp" |
| #include "runtime/globals.hpp" |
| #include "runtime/task.hpp" |
| #include "utilities/defaultStream.hpp" |
| |
| Flag::Error ObjectAlignmentInBytesConstraintFunc(intx value, bool verbose) { |
| if (!is_power_of_2(value)) { |
| CommandLineError::print(verbose, |
| "ObjectAlignmentInBytes (" INTX_FORMAT ") must be " |
| "power of 2\n", |
| value); |
| return Flag::VIOLATES_CONSTRAINT; |
| } |
| // In case page size is very small. |
| if (value >= (intx)os::vm_page_size()) { |
| CommandLineError::print(verbose, |
| "ObjectAlignmentInBytes (" INTX_FORMAT ") must be " |
| "less than page size (" INTX_FORMAT ")\n", |
| value, (intx)os::vm_page_size()); |
| return Flag::VIOLATES_CONSTRAINT; |
| } |
| return Flag::SUCCESS; |
| } |
| |
| // Need to enforce the padding not to break the existing field alignments. |
| // It is sufficient to check against the largest type size. |
| Flag::Error ContendedPaddingWidthConstraintFunc(intx value, bool verbose) { |
| if ((value % BytesPerLong) != 0) { |
| CommandLineError::print(verbose, |
| "ContendedPaddingWidth (" INTX_FORMAT ") must be " |
| "a multiple of %d\n", |
| value, BytesPerLong); |
| return Flag::VIOLATES_CONSTRAINT; |
| } else { |
| return Flag::SUCCESS; |
| } |
| } |
| |
| Flag::Error BiasedLockingBulkRebiasThresholdFunc(intx value, bool verbose) { |
| if (value > BiasedLockingBulkRevokeThreshold) { |
| CommandLineError::print(verbose, |
| "BiasedLockingBulkRebiasThreshold (" INTX_FORMAT ") must be " |
| "less than or equal to BiasedLockingBulkRevokeThreshold (" INTX_FORMAT ")\n", |
| value, BiasedLockingBulkRevokeThreshold); |
| return Flag::VIOLATES_CONSTRAINT; |
| } else { |
| return Flag::SUCCESS; |
| } |
| } |
| |
| Flag::Error BiasedLockingStartupDelayFunc(intx value, bool verbose) { |
| if ((value % PeriodicTask::interval_gran) != 0) { |
| CommandLineError::print(verbose, |
| "BiasedLockingStartupDelay (" INTX_FORMAT ") must be " |
| "evenly divisible by PeriodicTask::interval_gran (" INTX_FORMAT ")\n", |
| value, PeriodicTask::interval_gran); |
| return Flag::VIOLATES_CONSTRAINT; |
| } else { |
| return Flag::SUCCESS; |
| } |
| } |
| |
| Flag::Error BiasedLockingBulkRevokeThresholdFunc(intx value, bool verbose) { |
| if (value < BiasedLockingBulkRebiasThreshold) { |
| CommandLineError::print(verbose, |
| "BiasedLockingBulkRevokeThreshold (" INTX_FORMAT ") must be " |
| "greater than or equal to BiasedLockingBulkRebiasThreshold (" INTX_FORMAT ")\n", |
| value, BiasedLockingBulkRebiasThreshold); |
| return Flag::VIOLATES_CONSTRAINT; |
| } else if ((double)value/(double)BiasedLockingDecayTime > 0.1) { |
| CommandLineError::print(verbose, |
| "The ratio of BiasedLockingBulkRevokeThreshold (" INTX_FORMAT ")" |
| " to BiasedLockingDecayTime (" INTX_FORMAT ") must be " |
| "less than or equal to 0.1\n", |
| value, BiasedLockingBulkRebiasThreshold); |
| return Flag::VIOLATES_CONSTRAINT; |
| } else { |
| return Flag::SUCCESS; |
| } |
| } |
| |
| Flag::Error BiasedLockingDecayTimeFunc(intx value, bool verbose) { |
| if (BiasedLockingBulkRebiasThreshold/(double)value > 0.1) { |
| CommandLineError::print(verbose, |
| "The ratio of BiasedLockingBulkRebiasThreshold (" INTX_FORMAT ")" |
| " to BiasedLockingDecayTime (" INTX_FORMAT ") must be " |
| "less than or equal to 0.1\n", |
| BiasedLockingBulkRebiasThreshold, value); |
| return Flag::VIOLATES_CONSTRAINT; |
| } else { |
| return Flag::SUCCESS; |
| } |
| } |
| |
| Flag::Error PerfDataSamplingIntervalFunc(intx value, bool verbose) { |
| if ((value % PeriodicTask::interval_gran != 0)) { |
| CommandLineError::print(verbose, |
| "PerfDataSamplingInterval (" INTX_FORMAT ") must be " |
| "evenly divisible by PeriodicTask::interval_gran (" INTX_FORMAT ")\n", |
| value, PeriodicTask::interval_gran); |
| return Flag::VIOLATES_CONSTRAINT; |
| } else { |
| return Flag::SUCCESS; |
| } |
| } |
| |
| static inline Flag::Error sharedConstraintFunc(const char *name, size_t value, size_t taken, bool verbose) { |
| size_t available = (MAX_SHARED_DELTA-(taken+SHARED_PAGE)); |
| if (value > available) { |
| CommandLineError::print(verbose, |
| "%s (" SIZE_FORMAT ") must be " |
| "smaller than or equal to (" SIZE_FORMAT ")\n", |
| name, value, available); |
| return Flag::VIOLATES_CONSTRAINT; |
| } else { |
| return Flag::SUCCESS; |
| } |
| } |
| |
| Flag::Error SharedReadWriteSizeConstraintFunc(size_t value, bool verbose) { |
| size_t taken = (SharedReadOnlySize+SharedMiscDataSize+SharedMiscCodeSize); |
| return sharedConstraintFunc("SharedReadWriteSize", value, taken, verbose); |
| } |
| |
| Flag::Error SharedReadOnlySizeConstraintFunc(size_t value, bool verbose) { |
| size_t taken = (SharedReadWriteSize+SharedMiscDataSize+SharedMiscCodeSize); |
| return sharedConstraintFunc("SharedReadOnlySize", value, taken, verbose); |
| } |
| |
| Flag::Error SharedMiscDataSizeConstraintFunc(size_t value, bool verbose) { |
| size_t taken = (SharedReadWriteSize+SharedReadOnlySize+SharedMiscCodeSize); |
| return sharedConstraintFunc("SharedMiscDataSize", value, taken, verbose); |
| } |
| |
| Flag::Error SharedMiscCodeSizeConstraintFunc(size_t value, bool verbose) { |
| size_t taken = (SharedReadWriteSize+SharedReadOnlySize+SharedMiscDataSize); |
| return sharedConstraintFunc("SharedMiscCodeSize", value, taken, verbose); |
| } |