src/hotspot/share/runtime/flags/jvmFlagConstraintList.cpp
author gziemski
Mon, 23 Apr 2018 10:59:39 -0500
changeset 49857 31e07291ae29
parent 49731 src/hotspot/share/runtime/commandLineFlagConstraintList.cpp@635838cb8b3a
permissions -rw-r--r--
8081519: Split globals.hpp to factor out the Flag class Summary: Factored out Flag out go globals, renamed to JVMFlag Reviewed-by: coleenp, dholmes, kvn
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/*
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 * Copyright (c) 2015, 2017, 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 "classfile/stringTable.hpp"
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#include "classfile/symbolTable.hpp"
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#include "gc/shared/jvmFlagConstraintsGC.hpp"
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#include "runtime/arguments.hpp"
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#include "runtime/flags/jvmFlag.hpp"
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#include "runtime/flags/jvmFlagConstraintList.hpp"
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#include "runtime/flags/jvmFlagConstraintsCompiler.hpp"
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#include "runtime/flags/jvmFlagConstraintsRuntime.hpp"
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#include "runtime/os.hpp"
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#include "utilities/macros.hpp"
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#ifdef COMPILER1
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#include "c1/c1_globals.hpp"
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#endif
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#ifdef COMPILER2
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#include "opto/c2_globals.hpp"
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#endif
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class JVMFlagConstraint_bool : public JVMFlagConstraint {
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  JVMFlagConstraintFunc_bool _constraint;
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  const bool* _ptr;
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public:
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  // the "name" argument must be a string literal
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  JVMFlagConstraint_bool(const char* name, const bool* ptr,
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                                 JVMFlagConstraintFunc_bool func,
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                                 ConstraintType type) : JVMFlagConstraint(name, type), _constraint(func), _ptr(ptr) {}
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  JVMFlag::Error apply(bool verbose) {
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    bool value = *_ptr;
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    return _constraint(value, verbose);
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  }
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  JVMFlag::Error apply_bool(bool value, bool verbose) {
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    return _constraint(value, verbose);
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  }
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};
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class JVMFlagConstraint_int : public JVMFlagConstraint {
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  JVMFlagConstraintFunc_int _constraint;
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  const int* _ptr;
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public:
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  // the "name" argument must be a string literal
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  JVMFlagConstraint_int(const char* name, const int* ptr,
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                                JVMFlagConstraintFunc_int func,
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                                ConstraintType type) : JVMFlagConstraint(name, type), _constraint(func), _ptr(ptr) {}
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  JVMFlag::Error apply(bool verbose) {
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    int value = *_ptr;
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    return _constraint(value, verbose);
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  }
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  JVMFlag::Error apply_int(int value, bool verbose) {
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    return _constraint(value, verbose);
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  }
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};
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class JVMFlagConstraint_intx : public JVMFlagConstraint {
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  JVMFlagConstraintFunc_intx _constraint;
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  const intx* _ptr;
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public:
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  // the "name" argument must be a string literal
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  JVMFlagConstraint_intx(const char* name, const intx* ptr,
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                                 JVMFlagConstraintFunc_intx func,
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                                 ConstraintType type) : JVMFlagConstraint(name, type), _constraint(func), _ptr(ptr) {}
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  JVMFlag::Error apply(bool verbose) {
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    intx value = *_ptr;
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    return _constraint(value, verbose);
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  }
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  JVMFlag::Error apply_intx(intx value, bool verbose) {
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    return _constraint(value, verbose);
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  }
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};
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class JVMFlagConstraint_uint : public JVMFlagConstraint {
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  JVMFlagConstraintFunc_uint _constraint;
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  const uint* _ptr;
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public:
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  // the "name" argument must be a string literal
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  JVMFlagConstraint_uint(const char* name, const uint* ptr,
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                                 JVMFlagConstraintFunc_uint func,
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                                 ConstraintType type) : JVMFlagConstraint(name, type), _constraint(func), _ptr(ptr) {}
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  JVMFlag::Error apply(bool verbose) {
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    uint value = *_ptr;
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    return _constraint(value, verbose);
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  }
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  JVMFlag::Error apply_uint(uint value, bool verbose) {
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    return _constraint(value, verbose);
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  }
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};
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class JVMFlagConstraint_uintx : public JVMFlagConstraint {
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  JVMFlagConstraintFunc_uintx _constraint;
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  const uintx* _ptr;
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  // the "name" argument must be a string literal
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  JVMFlagConstraint_uintx(const char* name, const uintx* ptr,
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                                  JVMFlagConstraintFunc_uintx func,
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                                 ConstraintType type) : JVMFlagConstraint(name, type), _constraint(func), _ptr(ptr) {}
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  JVMFlag::Error apply(bool verbose) {
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    uintx value = *_ptr;
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    return _constraint(value, verbose);
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  }
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  JVMFlag::Error apply_uintx(uintx value, bool verbose) {
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    return _constraint(value, verbose);
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  }
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};
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class JVMFlagConstraint_uint64_t : public JVMFlagConstraint {
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  JVMFlagConstraintFunc_uint64_t _constraint;
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  const uint64_t* _ptr;
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public:
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  // the "name" argument must be a string literal
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  JVMFlagConstraint_uint64_t(const char* name, const uint64_t* ptr,
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                                     JVMFlagConstraintFunc_uint64_t func,
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                                 ConstraintType type) : JVMFlagConstraint(name, type), _constraint(func), _ptr(ptr) {}
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  JVMFlag::Error apply(bool verbose) {
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    uint64_t value = *_ptr;
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    return _constraint(value, verbose);
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  }
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  JVMFlag::Error apply_uint64_t(uint64_t value, bool verbose) {
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    return _constraint(value, verbose);
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  }
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};
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class JVMFlagConstraint_size_t : public JVMFlagConstraint {
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  JVMFlagConstraintFunc_size_t _constraint;
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  const size_t* _ptr;
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public:
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  // the "name" argument must be a string literal
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  JVMFlagConstraint_size_t(const char* name, const size_t* ptr,
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                                   JVMFlagConstraintFunc_size_t func,
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                                 ConstraintType type) : JVMFlagConstraint(name, type), _constraint(func), _ptr(ptr) {}
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  JVMFlag::Error apply(bool verbose) {
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    size_t value = *_ptr;
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    return _constraint(value, verbose);
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  }
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  JVMFlag::Error apply_size_t(size_t value, bool verbose) {
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    return _constraint(value, verbose);
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  }
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};
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class JVMFlagConstraint_double : public JVMFlagConstraint {
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  JVMFlagConstraintFunc_double _constraint;
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  const double* _ptr;
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public:
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  // the "name" argument must be a string literal
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  JVMFlagConstraint_double(const char* name, const double* ptr,
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                                   JVMFlagConstraintFunc_double func,
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                                 ConstraintType type) : JVMFlagConstraint(name, type), _constraint(func), _ptr(ptr) {}
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  JVMFlag::Error apply(bool verbose) {
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    double value = *_ptr;
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    return _constraint(value, verbose);
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  }
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  JVMFlag::Error apply_double(double value, bool verbose) {
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    return _constraint(value, verbose);
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  }
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};
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// No constraint emitting
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void emit_constraint_no(...)                                                      { /* NOP */ }
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// No constraint emitting if function argument is NOT provided
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void emit_constraint_bool(const char* /*name*/, const bool* /*value*/)            { /* NOP */ }
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void emit_constraint_ccstr(const char* /*name*/, const ccstr* /*value*/)          { /* NOP */ }
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void emit_constraint_ccstrlist(const char* /*name*/, const ccstrlist* /*value*/)  { /* NOP */ }
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void emit_constraint_int(const char* /*name*/, const int* /*value*/)              { /* NOP */ }
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void emit_constraint_intx(const char* /*name*/, const intx* /*value*/)            { /* NOP */ }
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void emit_constraint_uint(const char* /*name*/, const uint* /*value*/)            { /* NOP */ }
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void emit_constraint_uintx(const char* /*name*/, const uintx* /*value*/)          { /* NOP */ }
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void emit_constraint_uint64_t(const char* /*name*/, const uint64_t* /*value*/)    { /* NOP */ }
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void emit_constraint_size_t(const char* /*name*/, const size_t* /*value*/)        { /* NOP */ }
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void emit_constraint_double(const char* /*name*/, const double* /*value*/)        { /* NOP */ }
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// JVMFlagConstraint emitting code functions if function argument is provided
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void emit_constraint_bool(const char* name, const bool* ptr, JVMFlagConstraintFunc_bool func, JVMFlagConstraint::ConstraintType type) {
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  JVMFlagConstraintList::add(new JVMFlagConstraint_bool(name, ptr, func, type));
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}
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void emit_constraint_int(const char* name, const int* ptr, JVMFlagConstraintFunc_int func, JVMFlagConstraint::ConstraintType type) {
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  JVMFlagConstraintList::add(new JVMFlagConstraint_int(name, ptr, func, type));
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}
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void emit_constraint_intx(const char* name, const intx* ptr, JVMFlagConstraintFunc_intx func, JVMFlagConstraint::ConstraintType type) {
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  JVMFlagConstraintList::add(new JVMFlagConstraint_intx(name, ptr, func, type));
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}
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void emit_constraint_uint(const char* name, const uint* ptr, JVMFlagConstraintFunc_uint func, JVMFlagConstraint::ConstraintType type) {
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  JVMFlagConstraintList::add(new JVMFlagConstraint_uint(name, ptr, func, type));
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}
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void emit_constraint_uintx(const char* name, const uintx* ptr, JVMFlagConstraintFunc_uintx func, JVMFlagConstraint::ConstraintType type) {
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  JVMFlagConstraintList::add(new JVMFlagConstraint_uintx(name, ptr, func, type));
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}
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void emit_constraint_uint64_t(const char* name, const uint64_t* ptr, JVMFlagConstraintFunc_uint64_t func, JVMFlagConstraint::ConstraintType type) {
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  JVMFlagConstraintList::add(new JVMFlagConstraint_uint64_t(name, ptr, func, type));
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}
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void emit_constraint_size_t(const char* name, const size_t* ptr, JVMFlagConstraintFunc_size_t func, JVMFlagConstraint::ConstraintType type) {
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  JVMFlagConstraintList::add(new JVMFlagConstraint_size_t(name, ptr, func, type));
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}
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void emit_constraint_double(const char* name, const double* ptr, JVMFlagConstraintFunc_double func, JVMFlagConstraint::ConstraintType type) {
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  JVMFlagConstraintList::add(new JVMFlagConstraint_double(name, ptr, func, type));
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}
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// Generate code to call emit_constraint_xxx function
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#define EMIT_CONSTRAINT_PRODUCT_FLAG(type, name, value, doc)      ); emit_constraint_##type(#name,&name
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#define EMIT_CONSTRAINT_COMMERCIAL_FLAG(type, name, value, doc)   ); emit_constraint_##type(#name,&name
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#define EMIT_CONSTRAINT_DIAGNOSTIC_FLAG(type, name, value, doc)   ); emit_constraint_##type(#name,&name
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#define EMIT_CONSTRAINT_EXPERIMENTAL_FLAG(type, name, value, doc) ); emit_constraint_##type(#name,&name
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#define EMIT_CONSTRAINT_MANAGEABLE_FLAG(type, name, value, doc)   ); emit_constraint_##type(#name,&name
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#define EMIT_CONSTRAINT_PRODUCT_RW_FLAG(type, name, value, doc)   ); emit_constraint_##type(#name,&name
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#define EMIT_CONSTRAINT_PD_PRODUCT_FLAG(type, name, doc)          ); emit_constraint_##type(#name,&name
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#define EMIT_CONSTRAINT_PD_DIAGNOSTIC_FLAG(type, name, doc)       ); emit_constraint_##type(#name,&name
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#ifndef PRODUCT
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#define EMIT_CONSTRAINT_DEVELOPER_FLAG(type, name, value, doc)    ); emit_constraint_##type(#name,&name
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#define EMIT_CONSTRAINT_PD_DEVELOPER_FLAG(type, name, doc)        ); emit_constraint_##type(#name,&name
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#define EMIT_CONSTRAINT_NOTPRODUCT_FLAG(type, name, value, doc)   ); emit_constraint_##type(#name,&name
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#else
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#define EMIT_CONSTRAINT_DEVELOPER_FLAG(type, name, value, doc)    ); emit_constraint_no(#name,&name
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#define EMIT_CONSTRAINT_PD_DEVELOPER_FLAG(type, name, doc)        ); emit_constraint_no(#name,&name
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#define EMIT_CONSTRAINT_NOTPRODUCT_FLAG(type, name, value, doc)   ); emit_constraint_no(#name,&name
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#endif
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#ifdef _LP64
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#define EMIT_CONSTRAINT_LP64_PRODUCT_FLAG(type, name, value, doc) ); emit_constraint_##type(#name,&name
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#else
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#define EMIT_CONSTRAINT_LP64_PRODUCT_FLAG(type, name, value, doc) ); emit_constraint_no(#name,&name
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#endif
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// Generate func argument to pass into emit_constraint_xxx functions
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#define EMIT_CONSTRAINT_CHECK(func, type)                         , func, JVMFlagConstraint::type
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// the "name" argument must be a string literal
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#define INITIAL_CONSTRAINTS_SIZE 72
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GrowableArray<JVMFlagConstraint*>* JVMFlagConstraintList::_constraints = NULL;
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JVMFlagConstraint::ConstraintType JVMFlagConstraintList::_validating_type = JVMFlagConstraint::AtParse;
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// Check the ranges of all flags that have them or print them out and exit if requested
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void JVMFlagConstraintList::init(void) {
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  _constraints = new (ResourceObj::C_HEAP, mtArguments) GrowableArray<JVMFlagConstraint*>(INITIAL_CONSTRAINTS_SIZE, true);
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  emit_constraint_no(NULL VM_FLAGS(EMIT_CONSTRAINT_DEVELOPER_FLAG,
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                                   EMIT_CONSTRAINT_PD_DEVELOPER_FLAG,
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                                   EMIT_CONSTRAINT_PRODUCT_FLAG,
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                                   EMIT_CONSTRAINT_PD_PRODUCT_FLAG,
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                                   EMIT_CONSTRAINT_DIAGNOSTIC_FLAG,
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                                   EMIT_CONSTRAINT_PD_DIAGNOSTIC_FLAG,
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                                   EMIT_CONSTRAINT_EXPERIMENTAL_FLAG,
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                                   EMIT_CONSTRAINT_NOTPRODUCT_FLAG,
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                                   EMIT_CONSTRAINT_MANAGEABLE_FLAG,
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                                   EMIT_CONSTRAINT_PRODUCT_RW_FLAG,
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                                   EMIT_CONSTRAINT_LP64_PRODUCT_FLAG,
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                                   IGNORE_RANGE,
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                                   EMIT_CONSTRAINT_CHECK,
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                                   IGNORE_WRITEABLE));
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  EMIT_CONSTRAINTS_FOR_GLOBALS_EXT
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  emit_constraint_no(NULL ARCH_FLAGS(EMIT_CONSTRAINT_DEVELOPER_FLAG,
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                                     EMIT_CONSTRAINT_PRODUCT_FLAG,
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                                     EMIT_CONSTRAINT_DIAGNOSTIC_FLAG,
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                                     EMIT_CONSTRAINT_EXPERIMENTAL_FLAG,
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                                     EMIT_CONSTRAINT_NOTPRODUCT_FLAG,
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                                     IGNORE_RANGE,
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                                     EMIT_CONSTRAINT_CHECK,
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                                     IGNORE_WRITEABLE));
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#ifdef COMPILER1
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  emit_constraint_no(NULL C1_FLAGS(EMIT_CONSTRAINT_DEVELOPER_FLAG,
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                                   EMIT_CONSTRAINT_PD_DEVELOPER_FLAG,
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                                   EMIT_CONSTRAINT_PRODUCT_FLAG,
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                                   EMIT_CONSTRAINT_PD_PRODUCT_FLAG,
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                                   EMIT_CONSTRAINT_DIAGNOSTIC_FLAG,
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                                   EMIT_CONSTRAINT_PD_DIAGNOSTIC_FLAG,
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                                   EMIT_CONSTRAINT_NOTPRODUCT_FLAG,
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                                   IGNORE_RANGE,
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                                   EMIT_CONSTRAINT_CHECK,
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                                   IGNORE_WRITEABLE));
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#endif // COMPILER1
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#ifdef COMPILER2
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  emit_constraint_no(NULL C2_FLAGS(EMIT_CONSTRAINT_DEVELOPER_FLAG,
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                                   EMIT_CONSTRAINT_PD_DEVELOPER_FLAG,
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                                   EMIT_CONSTRAINT_PRODUCT_FLAG,
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                                   EMIT_CONSTRAINT_PD_PRODUCT_FLAG,
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                                   EMIT_CONSTRAINT_DIAGNOSTIC_FLAG,
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                                   EMIT_CONSTRAINT_PD_DIAGNOSTIC_FLAG,
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                                   EMIT_CONSTRAINT_EXPERIMENTAL_FLAG,
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                                   EMIT_CONSTRAINT_NOTPRODUCT_FLAG,
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                                   IGNORE_RANGE,
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                                   EMIT_CONSTRAINT_CHECK,
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                                   IGNORE_WRITEABLE));
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#endif // COMPILER2
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}
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JVMFlagConstraint* JVMFlagConstraintList::find(const char* name) {
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  JVMFlagConstraint* found = NULL;
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  for (int i=0; i<length(); i++) {
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    JVMFlagConstraint* constraint = at(i);
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    if (strcmp(constraint->name(), name) == 0) {
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      found = constraint;
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      break;
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    }
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  }
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  return found;
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}
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// Find constraints by name and return only if found constraint's type is equal or lower than current validating type.
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JVMFlagConstraint* JVMFlagConstraintList::find_if_needs_check(const char* name) {
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  JVMFlagConstraint* found = NULL;
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  JVMFlagConstraint* constraint = find(name);
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  if (constraint && (constraint->type() <= _validating_type)) {
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    found = constraint;
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  }
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  return found;
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}
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// Check constraints for specific constraint type.
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bool JVMFlagConstraintList::check_constraints(JVMFlagConstraint::ConstraintType type) {
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  guarantee(type > _validating_type, "Constraint check is out of order.");
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  _validating_type = type;
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  bool status = true;
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  for (int i=0; i<length(); i++) {
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    JVMFlagConstraint* constraint = at(i);
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    if (type != constraint->type()) continue;
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    if (constraint->apply(true) != JVMFlag::SUCCESS) status = false;
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  }
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  return status;
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}