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comparison test/runtime/NMT/MallocSiteHashOverflow.java @ 20628:80260967f994

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8061969: [TESTBUG] MallocSiteHashOverflow.java should be enabled for 32-bit platforms Reviewed-by: ctornqvi, coleenp
author gtriantafill
date Wed, 05 Nov 2014 08:22:17 -0800
parents 3f9ff5e261c6
children ec2c6fdd1ce6
comparison
equal deleted inserted replaced
20627:e7b3d177adda 20628:80260967f994
22 */ 22 */
23 23
24 /* 24 /*
25 * @test 25 * @test
26 * @summary Test corner case that overflows malloc site hashtable bucket 26 * @summary Test corner case that overflows malloc site hashtable bucket
27 * @requires sun.arch.data.model == "32"
27 * @key nmt jcmd stress 28 * @key nmt jcmd stress
28 * @library /testlibrary /testlibrary/whitebox 29 * @library /testlibrary /testlibrary/whitebox
29 * @ignore - This test is disabled since it will stress NMT and timeout during normal testing 30 * @ignore 8062870
30 * @build MallocSiteHashOverflow 31 * @build MallocSiteHashOverflow
31 * @run main ClassFileInstaller sun.hotspot.WhiteBox 32 * @run main ClassFileInstaller sun.hotspot.WhiteBox
32 * @run main/othervm/timeout=480 -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail MallocSiteHashOverflow 33 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail MallocSiteHashOverflow
33 */ 34 */
34 35
35 import com.oracle.java.testlibrary.*; 36 import com.oracle.java.testlibrary.*;
36 import sun.hotspot.WhiteBox; 37 import sun.hotspot.WhiteBox;
37 38
38 public class MallocSiteHashOverflow { 39 public class MallocSiteHashOverflow {
39 private static long K = 1024; 40
40 public static void main(String args[]) throws Exception { 41 public static void main(String args[]) throws Exception {
41 String vm_name = System.getProperty("java.vm.name");
42 42
43 // 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 // For 32-bit systems, create 257 malloc sites with the same hash bucket to overflow a hash bucket
44 // For 64-bit systems, create 64K + 1 malloc sites with the same hash bucket to overflow a hash bucket
45 long entries = 257; 45 long entries = 257;
46 if (Platform.is64bit()) {
47 entries = 64 * K + 1;
48 }
49 46
50 OutputAnalyzer output; 47 OutputAnalyzer output;
51 WhiteBox wb = WhiteBox.getWhiteBox(); 48 WhiteBox wb = WhiteBox.getWhiteBox();
49 int MAX_HASH_SIZE = wb.NMTGetHashSize();
52 50
53 // Grab my own PID 51 // Grab my own PID
54 String pid = Integer.toString(ProcessTools.getProcessId()); 52 String pid = Integer.toString(ProcessTools.getProcessId());
55 ProcessBuilder pb = new ProcessBuilder(); 53 ProcessBuilder pb = new ProcessBuilder();
56 54
57 wb.NMTOverflowHashBucket(entries); 55 // Verify that current tracking level is "detail"
58
59 // Run 'jcmd <pid> VM.native_memory summary'
60 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "statistics"}); 56 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "statistics"});
61 output = new OutputAnalyzer(pb.start()); 57 output = new OutputAnalyzer(pb.start());
62 output.shouldContain("Tracking level has been downgraded due to lack of resources"); 58 output.shouldContain("Native Memory Tracking Statistics");
59
60 // Attempt to cause NMT to downgrade tracking level by allocating small amounts
61 // of memory with random pseudo call stack
62 int pc = 1;
63 for (int i = 0; i < entries; i++) {
64 long addr = wb.NMTMallocWithPseudoStack(1, pc);
65 if (addr == 0) {
66 throw new RuntimeException("NMTMallocWithPseudoStack: out of memory");
67 }
68 // We free memory here since it doesn't affect pseudo malloc alloc site hash table entries
69 wb.NMTFree(addr);
70 pc += MAX_HASH_SIZE;
71 if (i == entries) {
72 // Verify that tracking has been downgraded
73 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "statistics"});
74 output = new OutputAnalyzer(pb.start());
75 output.shouldContain("Tracking level has been downgraded due to lack of resources");
76 }
77 }
63 } 78 }
64 } 79 }