2fdc0d3f21
Several improvements to range/constraint check feature. Reviewed-by: coleenp, ddmitriev, sangheki, kbarrett
87 lines
3.6 KiB
C++
87 lines
3.6 KiB
C++
/*
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* Copyright (c) 2015, 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 "runtime/arguments.hpp"
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#include "runtime/commandLineFlagConstraintsCompiler.hpp"
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#include "runtime/commandLineFlagRangeList.hpp"
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#include "runtime/globals.hpp"
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#include "utilities/defaultStream.hpp"
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Flag::Error AliasLevelConstraintFunc(intx value, bool verbose) {
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if ((value <= 1) && (Arguments::mode() == Arguments::_comp)) {
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CommandLineError::print(verbose,
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"AliasLevel (" INTX_FORMAT ") is not "
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"compatible with -Xcomp \n",
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value);
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return Flag::VIOLATES_CONSTRAINT;
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} else {
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return Flag::SUCCESS;
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}
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}
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/**
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* Validate the minimum number of compiler threads needed to run the
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* JVM. The following configurations are possible.
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*
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* 1) The JVM is build using an interpreter only. As a result, the minimum number of
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* compiler threads is 0.
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* 2) The JVM is build using the compiler(s) and tiered compilation is disabled. As
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* a result, either C1 or C2 is used, so the minimum number of compiler threads is 1.
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* 3) The JVM is build using the compiler(s) and tiered compilation is enabled. However,
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* the option "TieredStopAtLevel < CompLevel_full_optimization". As a result, only
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* C1 can be used, so the minimum number of compiler threads is 1.
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* 4) The JVM is build using the compilers and tiered compilation is enabled. The option
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* 'TieredStopAtLevel = CompLevel_full_optimization' (the default value). As a result,
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* the minimum number of compiler threads is 2.
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*/
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Flag::Error CICompilerCountConstraintFunc(intx value, bool verbose) {
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int min_number_of_compiler_threads = 0;
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#if !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK)
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// case 1
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#else
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if (!TieredCompilation || (TieredStopAtLevel < CompLevel_full_optimization)) {
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min_number_of_compiler_threads = 1; // case 2 or case 3
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} else {
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min_number_of_compiler_threads = 2; // case 4 (tiered)
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}
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#endif
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// The default CICompilerCount's value is CI_COMPILER_COUNT.
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// With a client VM, -XX:+TieredCompilation causes TieredCompilation
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// to be true here (the option is validated later) and
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// min_number_of_compiler_threads to exceed CI_COMPILER_COUNT.
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min_number_of_compiler_threads = MIN2(min_number_of_compiler_threads, CI_COMPILER_COUNT);
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if (value < (intx)min_number_of_compiler_threads) {
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CommandLineError::print(verbose,
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"CICompilerCount (" INTX_FORMAT ") must be "
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"at least %d \n",
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value, min_number_of_compiler_threads);
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return Flag::VIOLATES_CONSTRAINT;
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} else {
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return Flag::SUCCESS;
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}
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}
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