92 lines
3.3 KiB
C++
92 lines
3.3 KiB
C++
/*
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* Copyright (c) 2020, 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/os.hpp"
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#include "runtime/globals.hpp"
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#include "runtime/stackOverflow.hpp"
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#include "utilities/align.hpp"
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#include "utilities/globalDefinitions.hpp"
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#include "utilities/ostream.hpp"
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#include "unittest.hpp"
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TEST_VM(StackOverflow, basics) {
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StackOverflow so;
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// Make up a stack range. No need to allocate anything. Size has to be large enough
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// to fit sum of all zones into them.
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address base = (address) 0x40000000;
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const size_t size = os::vm_page_size() * 100;
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address end = base - size;
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so.initialize(base, end);
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// Walking down the "stack" check for consistency of the three "in_stack_xxx" functions
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enum { normal_stack, reserved_or_yellow_zone, red_zone } where = normal_stack;
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for (address p = base - 1; p >= end; p -= os::vm_page_size()) {
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// tty->print_cr(PTR_FORMAT " %d %d %d", p2i(p),
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// (int)so.in_stack_reserved_zone(p),
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// (int)so.in_stack_yellow_reserved_zone(p),
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// (int)so.in_stack_red_zone(p));
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switch (where) {
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case normal_stack:
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ASSERT_FALSE(so.in_stack_red_zone(p));
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if (so.in_stack_yellow_reserved_zone(p)) {
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if (StackReservedPages > 0) {
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ASSERT_TRUE(so.in_stack_reserved_zone(p));
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} else {
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ASSERT_FALSE(so.in_stack_reserved_zone(p));
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}
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where = reserved_or_yellow_zone;
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} else {
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ASSERT_FALSE(so.in_stack_reserved_zone((p)));
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}
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break;
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case reserved_or_yellow_zone:
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if (so.in_stack_red_zone(p)) {
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ASSERT_FALSE(so.in_stack_yellow_reserved_zone(p));
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where = red_zone;
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} else {
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ASSERT_TRUE(so.in_stack_yellow_reserved_zone(p));
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}
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break;
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case red_zone:
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ASSERT_TRUE(so.in_stack_red_zone(p));
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ASSERT_FALSE(so.in_stack_yellow_reserved_zone(p));
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ASSERT_FALSE(so.in_stack_reserved_zone((p)));
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break;
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}
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}
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ASSERT_EQ(where, red_zone);
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// Check bases.
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ASSERT_FALSE(so.in_stack_red_zone(so.stack_red_zone_base()));
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ASSERT_TRUE(so.in_stack_red_zone(so.stack_red_zone_base() - 1));
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ASSERT_TRUE(so.in_stack_yellow_reserved_zone(so.stack_red_zone_base()));
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ASSERT_FALSE(so.in_stack_reserved_zone(so.stack_reserved_zone_base()));
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if (so.stack_reserved_zone_size() > 0) {
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ASSERT_TRUE(so.in_stack_reserved_zone(so.stack_reserved_zone_base() - 1));
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}
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}
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