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8079408: Reimplement TraceClassLoading, TraceClassUnloading, and TraceClassLoaderData with Unified Logging

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TraceClassLoading,  TraceClassUnloading, and TraceClassLoaderData have been reimplemented using Unified logging.

Co-authored-by: Ioi Lam <ioi.lam@oracle.com>
Reviewed-by: iklam, coleenp, dholmes, jiangli, hseigel, rprotacio
This commit is contained in:
Max Ockner 2016-02-03 11:40:30 -05:00
parent 828a52c262
commit 9cab990401
22 changed files with 358 additions and 122 deletions
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77
hotspot/src/share/vm/oops/instanceKlass.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2015, 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
@ -24,6 +24,7 @@
#include "precompiled.hpp"
#include "classfile/classFileParser.hpp"
#include "classfile/classFileStream.hpp"
#include "classfile/javaClasses.hpp"
#include "classfile/systemDictionary.hpp"
#include "classfile/verifier.hpp"
@ -35,6 +36,7 @@
#include "interpreter/oopMapCache.hpp"
#include "interpreter/rewriter.hpp"
#include "jvmtifiles/jvmti.h"
#include "logging/log.hpp"
#include "memory/heapInspection.hpp"
#include "memory/iterator.inline.hpp"
#include "memory/metadataFactory.hpp"
@ -2904,6 +2906,79 @@ const char* InstanceKlass::internal_name() const {
return external_name();
}
void InstanceKlass::print_loading_log(LogLevel::type type,
ClassLoaderData* loader_data,
const ClassFileStream* cfs) const {
ResourceMark rm;
outputStream* log;
assert(type == LogLevel::Info || type == LogLevel::Debug, "sanity");
if (type == LogLevel::Info) {
log = LogHandle(classload)::info_stream();
} else {
assert(type == LogLevel::Debug,
"print_loading_log supports only Debug and Info levels");
log = LogHandle(classload)::debug_stream();
}
// Name and class hierarchy info
log->print("%s", external_name());
// Source
if (cfs != NULL) {
if (cfs->source() != NULL) {
log->print(" source: %s", cfs->source());
} else if (loader_data == ClassLoaderData::the_null_class_loader_data()) {
Thread* THREAD = Thread::current();
Klass* caller =
THREAD->is_Java_thread()
? ((JavaThread*)THREAD)->security_get_caller_class(1)
: NULL;
// caller can be NULL, for example, during a JVMTI VM_Init hook
if (caller != NULL) {
log->print(" source: instance of %s", caller->external_name());
} else {
// source is unknown
}
} else {
Handle class_loader(loader_data->class_loader());
log->print(" source: %s", class_loader->klass()->external_name());
}
} else {
log->print(" source: shared objects file");
}
if (type == LogLevel::Debug) {
// Class hierarchy info
log->print(" klass: " INTPTR_FORMAT " super: " INTPTR_FORMAT,
p2i(this), p2i(superklass()));
if (local_interfaces() != NULL && local_interfaces()->length() > 0) {
log->print(" interfaces:");
int length = local_interfaces()->length();
for (int i = 0; i < length; i++) {
log->print(" " INTPTR_FORMAT,
p2i(InstanceKlass::cast(local_interfaces()->at(i))));
}
}
// Class loader
log->print(" loader: [");
loader_data->print_value_on(log);
log->print("]");
// Classfile checksum
if (cfs) {
log->print(" bytes: %d checksum: %08x",
cfs->length(),
ClassLoader::crc32(0, (const char*)cfs->buffer(),
cfs->length()));
}
}
log->cr();
}
#if INCLUDE_SERVICES
// Size Statistics
void InstanceKlass::collect_statistics(KlassSizeStats *sz) const {