1 /* 2 * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "runtime/flags/jvmFlagRangeList.hpp" 27 #include "runtime/globals.hpp" 28 #include "utilities/globalDefinitions.hpp" 29 30 JVMFlag::Error ParallelGCThreadsConstraintFuncParallel(uint value, bool verbose) { 31 // Parallel GC passes ParallelGCThreads when creating GrowableArray as 'int' type parameter. 32 // So can't exceed with "max_jint" 33 34 if (UseParallelGC && (value > (uint)max_jint)) { 35 CommandLineError::print(verbose, 36 "ParallelGCThreads (" UINT32_FORMAT ") must be " 37 "less than or equal to " UINT32_FORMAT " for Parallel GC\n", 38 value, max_jint); 39 return JVMFlag::VIOLATES_CONSTRAINT; 40 } 41 return JVMFlag::SUCCESS; 42 } 43 44 JVMFlag::Error InitialTenuringThresholdConstraintFuncParallel(uintx value, bool verbose) { 45 // InitialTenuringThreshold is only used for ParallelGC. 46 if (UseParallelGC && (value > MaxTenuringThreshold)) { 47 CommandLineError::print(verbose, 48 "InitialTenuringThreshold (" UINTX_FORMAT ") must be " 49 "less than or equal to MaxTenuringThreshold (" UINTX_FORMAT ")\n", 50 value, MaxTenuringThreshold); 51 return JVMFlag::VIOLATES_CONSTRAINT; 52 } 53 return JVMFlag::SUCCESS; 54 } 55 56 JVMFlag::Error MaxTenuringThresholdConstraintFuncParallel(uintx value, bool verbose) { 57 // As only ParallelGC uses InitialTenuringThreshold, 58 // we don't need to compare InitialTenuringThreshold with MaxTenuringThreshold. 59 if (UseParallelGC && (value < InitialTenuringThreshold)) { 60 CommandLineError::print(verbose, 61 "MaxTenuringThreshold (" UINTX_FORMAT ") must be " 62 "greater than or equal to InitialTenuringThreshold (" UINTX_FORMAT ")\n", 63 value, InitialTenuringThreshold); 64 return JVMFlag::VIOLATES_CONSTRAINT; 65 } 66 67 return JVMFlag::SUCCESS; 68 }