54 lines
2.2 KiB
C++
54 lines
2.2 KiB
C++
/*
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* Copyright (c) 2001, 2016, 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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#include "precompiled.hpp"
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#include "gc/shared/collectedHeap.hpp"
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#include "unittest.hpp"
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TEST_VM(CollectedHeap, is_in) {
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CollectedHeap* heap = Universe::heap();
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uintptr_t epsilon = (uintptr_t) MinObjAlignment;
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uintptr_t heap_start = (uintptr_t) heap->reserved_region().start();
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uintptr_t heap_end = (uintptr_t) heap->reserved_region().end();
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// Test that NULL is not in the heap.
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ASSERT_FALSE(heap->is_in(NULL)) << "NULL is unexpectedly in the heap";
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// Test that a pointer to before the heap start is reported as outside the heap.
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ASSERT_GE(heap_start, ((uintptr_t) NULL + epsilon))
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<< "Sanity check - heap should not start at 0";
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void* before_heap = (void*) (heap_start - epsilon);
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ASSERT_FALSE(heap->is_in(before_heap)) << "before_heap: " << p2i(before_heap)
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<< " is unexpectedly in the heap";
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// Test that a pointer to after the heap end is reported as outside the heap.
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ASSERT_LE(heap_end, ((uintptr_t)-1 - epsilon))
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<< "Sanity check - heap should not end at the end of address space";
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void* after_heap = (void*) (heap_end + epsilon);
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ASSERT_FALSE(heap->is_in(after_heap)) << "after_heap: " << p2i(after_heap)
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<< " is unexpectedly in the heap";
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}
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