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8151342: Add module name/version to class histogram output

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Add additional column to histogram containing module@version

Reviewed-by: sundar, gtriantafill
This commit is contained in:
Harold Seigel 2016-04-28 13:44:36 -04:00
parent 7d20b786fd
commit d30adc68f2
2 changed files with 32 additions and 20 deletions
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23
hotspot/src/share/vm/memory/heapInspection.cpp
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@ -24,6 +24,7 @@
#include "precompiled.hpp"
#include "classfile/classLoaderData.hpp"
#include "classfile/moduleEntry.hpp"
#include "classfile/systemDictionary.hpp"
#include "gc/shared/collectedHeap.hpp"
#include "gc/shared/genCollectedHeap.hpp"
@ -105,10 +106,20 @@ void KlassInfoEntry::print_on(outputStream* st) const {
ResourceMark rm;
// simplify the formatting (ILP32 vs LP64) - always cast the numbers to 64-bit
st->print_cr(INT64_FORMAT_W(13) " " UINT64_FORMAT_W(13) " %s",
(int64_t)_instance_count,
(uint64_t)_instance_words * HeapWordSize,
name());
ModuleEntry* module = _klass->module();
if (module->is_named()) {
st->print_cr(INT64_FORMAT_W(13) " " UINT64_FORMAT_W(13) " %s (%s@%s)",
(int64_t)_instance_count,
(uint64_t)_instance_words * HeapWordSize,
name(),
module->name()->as_C_string(),
module->version() != NULL ? module->version()->as_C_string() : "");
} else {
st->print_cr(INT64_FORMAT_W(13) " " UINT64_FORMAT_W(13) " %s",
(int64_t)_instance_count,
(uint64_t)_instance_words * HeapWordSize,
name());
}
}
KlassInfoEntry* KlassInfoBucket::lookup(Klass* const k) {
@ -647,8 +658,8 @@ void KlassInfoHisto::print_histo_on(outputStream* st, bool print_stats,
if (print_stats) {
print_class_stats(st, csv_format, columns);
} else {
st->print_cr(" num #instances #bytes class name");
st->print_cr("----------------------------------------------");
st->print_cr(" num #instances #bytes class name (module)");
st->print_cr("-------------------------------------------------------");
print_elements(st);
}
}

29
hotspot/test/serviceability/dcmd/gc/ClassHistogramTest.java
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -57,33 +57,34 @@ public class ClassHistogramTest {
/*
* example output:
* num #instances #bytes class name
* ----------------------------------------------
* 1: 1647 1133752 [B
* 2: 6198 383168 [C
* 3: 1464 165744 java.lang.Class
* 4: 6151 147624 java.lang.String
* 5: 2304 73728 java.util.concurrent.ConcurrentHashMap$Node
* 6: 1199 64280 [Ljava.lang.Object;
* num #instances #bytes class name (module)
* -------------------------------------------------------
* 1: 7991 757792 [B (java.base@9-internal)
* 2: 1811 217872 java.lang.Class (java.base@9-internal)
* 3: 6724 215168 java.util.HashMap$Node (java.base@9-internal)
* 4: 7852 188448 java.lang.String (java.base@9-internal)
* 5: 1378 105040 [Ljava.util.HashMap$Node; (java.base@9-internal)
* 6: 1863 95096 [Ljava.lang.Object; (java.base@9-internal)
* ...
*/
/* Require at least one java.lang.Class */
output.shouldMatch("^\\s+\\d+:\\s+\\d+\\s+\\d+\\s+java.lang.Class\\s*$");
output.shouldMatch("^\\s+\\d+:\\s+\\d+\\s+\\d+\\s+java.lang.Class \\(java.base@\\S*\\)\\s*$");
/* Require at least one java.lang.String */
output.shouldMatch("^\\s+\\d+:\\s+\\d+\\s+\\d+\\s+java.lang.String\\s*$");
output.shouldMatch("^\\s+\\d+:\\s+\\d+\\s+\\d+\\s+java.lang.String \\(java.base@\\S*\\)\\s*$");
/* Require at least one java.lang.Object */
output.shouldMatch("^\\s+\\d+:\\s+\\d+\\s+\\d+\\s+java.lang.Object\\s*$");
output.shouldMatch("^\\s+\\d+:\\s+\\d+\\s+\\d+\\s+java.lang.Object \\(java.base@\\S*\\)\\s*$");
/* Require at exactly one TestClass[] */
output.shouldMatch("^\\s+\\d+:\\s+1\\s+\\d+\\s+" +
Pattern.quote(TestClass[].class.getName()) + "\\s*$");
Pattern.quote(TestClass[].class.getName()) + "\\s*$");
/* Require at exactly 1024 TestClass */
output.shouldMatch("^\\s+\\d+:\\s+1024\\s+\\d+\\s+" +
Pattern.quote(TestClass.class.getName()) + "\\s*$");
Pattern.quote(TestClass.class.getName()) + "\\s*$");
}
@Test