9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 #include "precompiled.hpp"
  25 #include "gc/shared/collectedHeap.hpp"
  26 #include "unittest.hpp"
  27 
  28 TEST_VM(CollectedHeap, is_in) {
  29   CollectedHeap* heap = Universe::heap();
  30 
  31   uintptr_t epsilon = (uintptr_t) MinObjAlignment;
  32   uintptr_t heap_start = (uintptr_t) heap->reserved_region().start();
  33   uintptr_t heap_end = (uintptr_t) heap->reserved_region().end();
  34 
  35   // Test that NULL is not in the heap.
  36   ASSERT_FALSE(heap->is_in(NULL)) << "NULL is unexpectedly in the heap";
  37 
  38   // Test that a pointer to before the heap start is reported as outside the heap.
  39   ASSERT_GE(heap_start, ((uintptr_t) NULL + epsilon))
  40           << "Sanity check - heap should not start at 0";
  41 
  42   void* before_heap = (void*) (heap_start - epsilon);
  43   ASSERT_FALSE(heap->is_in(before_heap)) << "before_heap: " << p2i(before_heap)
  44           << " is unexpectedly in the heap";
  45 
  46   // Test that a pointer to after the heap end is reported as outside the heap.
  47   ASSERT_LE(heap_end, ((uintptr_t)-1 - epsilon))
  48           << "Sanity check - heap should not end at the end of address space";
  49 

   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 #include "precompiled.hpp"
  25 #include "gc/shared/collectedHeap.hpp"
  26 #include "unittest.hpp"
  27 
  28 TEST_VM(CollectedHeap, is_in) {
  29   CollectedHeap* heap = GC::gc()->heap();
  30 
  31   uintptr_t epsilon = (uintptr_t) MinObjAlignment;
  32   uintptr_t heap_start = (uintptr_t) heap->reserved_region().start();
  33   uintptr_t heap_end = (uintptr_t) heap->reserved_region().end();
  34 
  35   // Test that NULL is not in the heap.
  36   ASSERT_FALSE(heap->is_in(NULL)) << "NULL is unexpectedly in the heap";
  37 
  38   // Test that a pointer to before the heap start is reported as outside the heap.
  39   ASSERT_GE(heap_start, ((uintptr_t) NULL + epsilon))
  40           << "Sanity check - heap should not start at 0";
  41 
  42   void* before_heap = (void*) (heap_start - epsilon);
  43   ASSERT_FALSE(heap->is_in(before_heap)) << "before_heap: " << p2i(before_heap)
  44           << " is unexpectedly in the heap";
  45 
  46   // Test that a pointer to after the heap end is reported as outside the heap.
  47   ASSERT_LE(heap_end, ((uintptr_t)-1 - epsilon))
  48           << "Sanity check - heap should not end at the end of address space";
  49