6619271: The -Xprintflags causes the VM to segv
Summary: add null checks
Reviewed-by: jrose, kvn
/*
* Copyright 2001-2002 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
class StackValueCollection : public ResourceObj {
private:
GrowableArray<StackValue*>* _values;
public:
StackValueCollection() { _values = new GrowableArray<StackValue*>(); }
StackValueCollection(int length) { _values = new GrowableArray<StackValue*>(length); }
void add(StackValue *val) const { _values->push(val); }
int size() const { return _values->length(); }
bool is_empty() const { return (size() == 0); }
StackValue* at(int i) const { return _values->at(i); }
// Get typed locals/expressions
jint int_at(int slot) const;
jlong long_at(int slot) const;
Handle obj_at(int slot) const;
jfloat float_at(int slot) const;
jdouble double_at(int slot) const;
// Set typed locals/expressions
void set_int_at(int slot, jint value);
void set_long_at(int slot, jlong value);
void set_obj_at(int slot, Handle value);
void set_float_at(int slot, jfloat value);
void set_double_at(int slot, jdouble value);
void print();
};