/*
* Copyright (c) 2015, 2018, 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 "classfile/stringTable.hpp"
#include "classfile/symbolTable.hpp"
#include "gc/shared/jvmFlagConstraintsGC.hpp"
#include "runtime/arguments.hpp"
#include "runtime/flags/jvmFlag.hpp"
#include "runtime/flags/jvmFlagConstraintList.hpp"
#include "runtime/flags/jvmFlagConstraintsCompiler.hpp"
#include "runtime/flags/jvmFlagConstraintsRuntime.hpp"
#include "runtime/globals.hpp"
#include "runtime/globals_extension.hpp"
#include "runtime/os.hpp"
#include "utilities/macros.hpp"
class JVMFlagConstraint_bool : public JVMFlagConstraint {
JVMFlagConstraintFunc_bool _constraint;
public:
JVMFlagConstraint_bool(const JVMFlag* flag,
JVMFlagConstraintFunc_bool func,
ConstraintType type) : JVMFlagConstraint(flag, type), _constraint(func) {}
JVMFlag::Error apply(bool verbose) {
return _constraint(_flag->get_bool(), verbose);
}
JVMFlag::Error apply_bool(bool value, bool verbose) {
return _constraint(value, verbose);
}
};
class JVMFlagConstraint_int : public JVMFlagConstraint {
JVMFlagConstraintFunc_int _constraint;
public:
JVMFlagConstraint_int(const JVMFlag* flag,
JVMFlagConstraintFunc_int func,
ConstraintType type) : JVMFlagConstraint(flag, type), _constraint(func) {}
JVMFlag::Error apply(bool verbose) {
return _constraint(_flag->get_int(), verbose);
}
JVMFlag::Error apply_int(int value, bool verbose) {
return _constraint(value, verbose);
}
};
class JVMFlagConstraint_intx : public JVMFlagConstraint {
JVMFlagConstraintFunc_intx _constraint;
public:
JVMFlagConstraint_intx(const JVMFlag* flag,
JVMFlagConstraintFunc_intx func,
ConstraintType type) : JVMFlagConstraint(flag, type), _constraint(func) {}
JVMFlag::Error apply(bool verbose) {
return _constraint(_flag->get_intx(), verbose);
}
JVMFlag::Error apply_intx(intx value, bool verbose) {
return _constraint(value, verbose);
}
};
class JVMFlagConstraint_uint : public JVMFlagConstraint {
JVMFlagConstraintFunc_uint _constraint;
public:
JVMFlagConstraint_uint(const JVMFlag* flag,
JVMFlagConstraintFunc_uint func,
ConstraintType type) : JVMFlagConstraint(flag, type), _constraint(func) {}
JVMFlag::Error apply(bool verbose) {
return _constraint(_flag->get_uint(), verbose);
}
JVMFlag::Error apply_uint(uint value, bool verbose) {
return _constraint(value, verbose);
}
};
class JVMFlagConstraint_uintx : public JVMFlagConstraint {
JVMFlagConstraintFunc_uintx _constraint;
public:
JVMFlagConstraint_uintx(const JVMFlag* flag,
JVMFlagConstraintFunc_uintx func,
ConstraintType type) : JVMFlagConstraint(flag, type), _constraint(func) {}
JVMFlag::Error apply(bool verbose) {
return _constraint(_flag->get_uintx(), verbose);
}
JVMFlag::Error apply_uintx(uintx value, bool verbose) {
return _constraint(value, verbose);
}
};
class JVMFlagConstraint_uint64_t : public JVMFlagConstraint {
JVMFlagConstraintFunc_uint64_t _constraint;
public:
JVMFlagConstraint_uint64_t(const JVMFlag* flag,
JVMFlagConstraintFunc_uint64_t func,
ConstraintType type) : JVMFlagConstraint(flag, type), _constraint(func) {}
JVMFlag::Error apply(bool verbose) {
return _constraint(_flag->get_uint64_t(), verbose);
}
JVMFlag::Error apply_uint64_t(uint64_t value, bool verbose) {
return _constraint(value, verbose);
}
};
class JVMFlagConstraint_size_t : public JVMFlagConstraint {
JVMFlagConstraintFunc_size_t _constraint;
public:
JVMFlagConstraint_size_t(const JVMFlag* flag,
JVMFlagConstraintFunc_size_t func,
ConstraintType type) : JVMFlagConstraint(flag, type), _constraint(func) {}
JVMFlag::Error apply(bool verbose) {
return _constraint(_flag->get_size_t(), verbose);
}
JVMFlag::Error apply_size_t(size_t value, bool verbose) {
return _constraint(value, verbose);
}
};
class JVMFlagConstraint_double : public JVMFlagConstraint {
JVMFlagConstraintFunc_double _constraint;
public:
JVMFlagConstraint_double(const JVMFlag* flag,
JVMFlagConstraintFunc_double func,
ConstraintType type) : JVMFlagConstraint(flag, type), _constraint(func) {}
JVMFlag::Error apply(bool verbose) {
return _constraint(_flag->get_double(), verbose);
}
JVMFlag::Error apply_double(double value, bool verbose) {
return _constraint(value, verbose);
}
};
// No constraint emitting
void emit_constraint_no(...) { /* NOP */ }
// No constraint emitting if function argument is NOT provided
void emit_constraint_bool(const JVMFlag* /*flag*/) { /* NOP */ }
void emit_constraint_ccstr(const JVMFlag* /*flag*/) { /* NOP */ }
void emit_constraint_ccstrlist(const JVMFlag* /*flag*/) { /* NOP */ }
void emit_constraint_int(const JVMFlag* /*flag*/) { /* NOP */ }
void emit_constraint_intx(const JVMFlag* /*flag*/) { /* NOP */ }
void emit_constraint_uint(const JVMFlag* /*flag*/) { /* NOP */ }
void emit_constraint_uintx(const JVMFlag* /*flag*/) { /* NOP */ }
void emit_constraint_uint64_t(const JVMFlag* /*flag*/) { /* NOP */ }
void emit_constraint_size_t(const JVMFlag* /*flag*/) { /* NOP */ }
void emit_constraint_double(const JVMFlag* /*flag*/) { /* NOP */ }
// JVMFlagConstraint emitting code functions if function argument is provided
void emit_constraint_bool(const JVMFlag* flag, JVMFlagConstraintFunc_bool func, JVMFlagConstraint::ConstraintType type) {
JVMFlagConstraintList::add(new JVMFlagConstraint_bool(flag, func, type));
}
void emit_constraint_int(const JVMFlag* flag, JVMFlagConstraintFunc_int func, JVMFlagConstraint::ConstraintType type) {
JVMFlagConstraintList::add(new JVMFlagConstraint_int(flag, func, type));
}
void emit_constraint_intx(const JVMFlag* flag, JVMFlagConstraintFunc_intx func, JVMFlagConstraint::ConstraintType type) {
JVMFlagConstraintList::add(new JVMFlagConstraint_intx(flag, func, type));
}
void emit_constraint_uint(const JVMFlag* flag, JVMFlagConstraintFunc_uint func, JVMFlagConstraint::ConstraintType type) {
JVMFlagConstraintList::add(new JVMFlagConstraint_uint(flag, func, type));
}
void emit_constraint_uintx(const JVMFlag* flag, JVMFlagConstraintFunc_uintx func, JVMFlagConstraint::ConstraintType type) {
JVMFlagConstraintList::add(new JVMFlagConstraint_uintx(flag, func, type));
}
void emit_constraint_uint64_t(const JVMFlag* flag, JVMFlagConstraintFunc_uint64_t func, JVMFlagConstraint::ConstraintType type) {
JVMFlagConstraintList::add(new JVMFlagConstraint_uint64_t(flag, func, type));
}
void emit_constraint_size_t(const JVMFlag* flag, JVMFlagConstraintFunc_size_t func, JVMFlagConstraint::ConstraintType type) {
JVMFlagConstraintList::add(new JVMFlagConstraint_size_t(flag, func, type));
}
void emit_constraint_double(const JVMFlag* flag, JVMFlagConstraintFunc_double func, JVMFlagConstraint::ConstraintType type) {
JVMFlagConstraintList::add(new JVMFlagConstraint_double(flag, func, type));
}
// Generate code to call emit_constraint_xxx function
#define EMIT_CONSTRAINT_START (void)(0
#define EMIT_CONSTRAINT(type, name) ); emit_constraint_##type(JVMFlagEx::flag_from_enum(FLAG_MEMBER_ENUM(name))
#define EMIT_CONSTRAINT_NO ); emit_constraint_no(0
#define EMIT_CONSTRAINT_PRODUCT_FLAG(type, name, value, doc) EMIT_CONSTRAINT(type, name)
#define EMIT_CONSTRAINT_DIAGNOSTIC_FLAG(type, name, value, doc) EMIT_CONSTRAINT(type, name)
#define EMIT_CONSTRAINT_EXPERIMENTAL_FLAG(type, name, value, doc) EMIT_CONSTRAINT(type, name)
#define EMIT_CONSTRAINT_MANAGEABLE_FLAG(type, name, value, doc) EMIT_CONSTRAINT(type, name)
#define EMIT_CONSTRAINT_PRODUCT_RW_FLAG(type, name, value, doc) EMIT_CONSTRAINT(type, name)
#define EMIT_CONSTRAINT_PD_PRODUCT_FLAG(type, name, doc) EMIT_CONSTRAINT(type, name)
#define EMIT_CONSTRAINT_PD_DIAGNOSTIC_FLAG(type, name, doc) EMIT_CONSTRAINT(type, name)
#ifndef PRODUCT
#define EMIT_CONSTRAINT_DEVELOPER_FLAG(type, name, value, doc) EMIT_CONSTRAINT(type, name)
#define EMIT_CONSTRAINT_PD_DEVELOPER_FLAG(type, name, doc) EMIT_CONSTRAINT(type, name)
#define EMIT_CONSTRAINT_NOTPRODUCT_FLAG(type, name, value, doc) EMIT_CONSTRAINT(type, name)
#else
#define EMIT_CONSTRAINT_DEVELOPER_FLAG(type, name, value, doc) EMIT_CONSTRAINT_NO
#define EMIT_CONSTRAINT_PD_DEVELOPER_FLAG(type, name, doc) EMIT_CONSTRAINT_NO
#define EMIT_CONSTRAINT_NOTPRODUCT_FLAG(type, name, value, doc) EMIT_CONSTRAINT_NO
#endif
#ifdef _LP64
#define EMIT_CONSTRAINT_LP64_PRODUCT_FLAG(type, name, value, doc) EMIT_CONSTRAINT(type, name)
#else
#define EMIT_CONSTRAINT_LP64_PRODUCT_FLAG(type, name, value, doc) EMIT_CONSTRAINT_NO
#endif
#define EMIT_CONSTRAINT_END );
// Generate func argument to pass into emit_constraint_xxx functions
#define EMIT_CONSTRAINT_CHECK(func, type) , func, JVMFlagConstraint::type
// the "name" argument must be a string literal
#define INITIAL_CONSTRAINTS_SIZE 72
GrowableArray<JVMFlagConstraint*>* JVMFlagConstraintList::_constraints = NULL;
JVMFlagConstraint::ConstraintType JVMFlagConstraintList::_validating_type = JVMFlagConstraint::AtParse;
// Check the ranges of all flags that have them or print them out and exit if requested
void JVMFlagConstraintList::init(void) {
_constraints = new (ResourceObj::C_HEAP, mtArguments) GrowableArray<JVMFlagConstraint*>(INITIAL_CONSTRAINTS_SIZE, true);
EMIT_CONSTRAINT_START
ALL_FLAGS(EMIT_CONSTRAINT_DEVELOPER_FLAG,
EMIT_CONSTRAINT_PD_DEVELOPER_FLAG,
EMIT_CONSTRAINT_PRODUCT_FLAG,
EMIT_CONSTRAINT_PD_PRODUCT_FLAG,
EMIT_CONSTRAINT_DIAGNOSTIC_FLAG,
EMIT_CONSTRAINT_PD_DIAGNOSTIC_FLAG,
EMIT_CONSTRAINT_EXPERIMENTAL_FLAG,
EMIT_CONSTRAINT_NOTPRODUCT_FLAG,
EMIT_CONSTRAINT_MANAGEABLE_FLAG,
EMIT_CONSTRAINT_PRODUCT_RW_FLAG,
EMIT_CONSTRAINT_LP64_PRODUCT_FLAG,
IGNORE_RANGE,
EMIT_CONSTRAINT_CHECK,
IGNORE_WRITEABLE)
EMIT_CONSTRAINT_END
}
JVMFlagConstraint* JVMFlagConstraintList::find(const JVMFlag* flag) {
JVMFlagConstraint* found = NULL;
for (int i=0; i<length(); i++) {
JVMFlagConstraint* constraint = at(i);
if (constraint->flag() == flag) {
found = constraint;
break;
}
}
return found;
}
// Find constraints and return only if found constraint's type is equal or lower than current validating type.
JVMFlagConstraint* JVMFlagConstraintList::find_if_needs_check(const JVMFlag* flag) {
JVMFlagConstraint* found = NULL;
JVMFlagConstraint* constraint = find(flag);
if (constraint != NULL && (constraint->type() <= _validating_type)) {
found = constraint;
}
return found;
}
// Check constraints for specific constraint type.
bool JVMFlagConstraintList::check_constraints(JVMFlagConstraint::ConstraintType type) {
guarantee(type > _validating_type, "Constraint check is out of order.");
_validating_type = type;
bool status = true;
for (int i=0; i<length(); i++) {
JVMFlagConstraint* constraint = at(i);
if (type != constraint->type()) continue;
if (constraint->apply(true) != JVMFlag::SUCCESS) status = false;
}
return status;
}