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 /*
  25  * @test
  26  * @summary Test corner case that overflows malloc site hashtable bucket
  27  * @requires sun.arch.data.model == "32"
  28  * @key nmt jcmd stress
  29  * @library /testlibrary /../../test/lib
  30  * @build MallocSiteHashOverflow
  31  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  32  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail MallocSiteHashOverflow
  33  */
  34 
  35 import jdk.test.lib.*;
  36 import sun.hotspot.WhiteBox;
  37 
  38 public class MallocSiteHashOverflow {
  39 
  40     public static void main(String args[]) throws Exception {
  41 
  42         // Size of entries based on malloc tracking header defined in mallocTracker.hpp
  43         // For 32-bit systems, create 257 malloc sites with the same hash bucket to overflow a hash bucket
  44         long entries = 257;
  45 
  46         OutputAnalyzer output;
  47         WhiteBox wb = WhiteBox.getWhiteBox();
  48         int MAX_HASH_SIZE = wb.NMTGetHashSize();
  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 /*
  25  * @test
  26  * @summary Test corner case that overflows malloc site hashtable bucket
  27  * @requires sun.arch.data.model == "32"
  28  * @key nmt jcmd stress
  29  * @library /testlibrary /test/lib
  30  * @build MallocSiteHashOverflow
  31  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  32  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail MallocSiteHashOverflow
  33  */
  34 
  35 import jdk.test.lib.*;
  36 import sun.hotspot.WhiteBox;
  37 
  38 public class MallocSiteHashOverflow {
  39 
  40     public static void main(String args[]) throws Exception {
  41 
  42         // Size of entries based on malloc tracking header defined in mallocTracker.hpp
  43         // For 32-bit systems, create 257 malloc sites with the same hash bucket to overflow a hash bucket
  44         long entries = 257;
  45 
  46         OutputAnalyzer output;
  47         WhiteBox wb = WhiteBox.getWhiteBox();
  48         int MAX_HASH_SIZE = wb.NMTGetHashSize();
  49