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8005849: JEP 167: Event-Based JVM Tracing

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Co-authored-by: Karen Kinnear <karen.kinnear@oracle.com>
Co-authored-by: Bengt Rutisson <bengt.rutisson@oracle.com>
Co-authored-by: Calvin Cheung <calvin.cheung@oracle.com>
Co-authored-by: Erik Gahlin <erik.gahlin@oracle.com>
Co-authored-by: Erik Helin <erik.helin@oracle.com>
Co-authored-by: Jesper Wilhelmsson <jesper.wilhelmsson@oracle.com>
Co-authored-by: Keith McGuigan <keith.mcguigan@oracle.com>
Co-authored-by: Mattias Tobiasson <mattias.tobiasson@oracle.com>
Co-authored-by: Markus Gronlund <markus.gronlund@oracle.com>
Co-authored-by: Mikael Auno <mikael.auno@oracle.com>
Co-authored-by: Nils Eliasson <nils.eliasson@oracle.com>
Co-authored-by: Nils Loodin <nils.loodin@oracle.com>
Co-authored-by: Rickard Backman <rickard.backman@oracle.com>
Co-authored-by: Stefan Karlsson <stefan.karlsson@oracle.com>
Co-authored-by: Yekaterina Kantserova <yekaterina.kantserova@oracle.com>
Reviewed-by: acorn, coleenp, sla
This commit is contained in:
Staffan Larsen 2013-06-10 11:30:51 +02:00
parent 6b2c468c35
commit 718f3252f6
195 changed files with 7628 additions and 1484 deletions
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61
hotspot/src/share/vm/classfile/classLoaderData.cpp
View file

@ -64,6 +64,11 @@
#include "utilities/growableArray.hpp"
#include "utilities/ostream.hpp"
#if INCLUDE_TRACE
#include "trace/tracing.hpp"
#endif
ClassLoaderData * ClassLoaderData::_the_null_class_loader_data = NULL;
ClassLoaderData::ClassLoaderData(Handle h_class_loader, bool is_anonymous, Dependencies dependencies) :
@ -120,6 +125,12 @@ void ClassLoaderData::classes_do(KlassClosure* klass_closure) {
}
}
void ClassLoaderData::classes_do(void f(Klass * const)) {
for (Klass* k = _klasses; k != NULL; k = k->next_link()) {
f(k);
}
}
void ClassLoaderData::classes_do(void f(InstanceKlass*)) {
for (Klass* k = _klasses; k != NULL; k = k->next_link()) {
if (k->oop_is_instance()) {
@ -583,6 +594,19 @@ void ClassLoaderDataGraph::classes_do(KlassClosure* klass_closure) {
}
}
void ClassLoaderDataGraph::classes_do(void f(Klass* const)) {
for (ClassLoaderData* cld = _head; cld != NULL; cld = cld->next()) {
cld->classes_do(f);
}
}
void ClassLoaderDataGraph::classes_unloading_do(void f(Klass* const)) {
assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint!");
for (ClassLoaderData* cld = _unloading; cld != NULL; cld = cld->next()) {
cld->classes_do(f);
}
}
GrowableArray<ClassLoaderData*>* ClassLoaderDataGraph::new_clds() {
assert(_head == NULL || _saved_head != NULL, "remember_new_clds(true) not called?");
@ -687,6 +711,11 @@ bool ClassLoaderDataGraph::do_unloading(BoolObjectClosure* is_alive_closure) {
dead->set_next(_unloading);
_unloading = dead;
}
if (seen_dead_loader) {
post_class_unload_events();
}
return seen_dead_loader;
}
@ -702,6 +731,20 @@ void ClassLoaderDataGraph::purge() {
Metaspace::purge();
}
void ClassLoaderDataGraph::post_class_unload_events(void) {
#if INCLUDE_TRACE
assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint!");
if (Tracing::enabled()) {
if (Tracing::is_event_enabled(TraceClassUnloadEvent)) {
assert(_unloading != NULL, "need class loader data unload list!");
_class_unload_time = Tracing::time();
classes_unloading_do(&class_unload_event);
}
Tracing::on_unloading_classes();
}
#endif
}
// CDS support
// Global metaspaces for writing information to the shared archive. When
@ -769,3 +812,21 @@ void ClassLoaderData::print_value_on(outputStream* out) const {
class_loader()->print_value_on(out);
}
}
#if INCLUDE_TRACE
TracingTime ClassLoaderDataGraph::_class_unload_time;
void ClassLoaderDataGraph::class_unload_event(Klass* const k) {
// post class unload event
EventClassUnload event(UNTIMED);
event.set_endtime(_class_unload_time);
event.set_unloadedClass(k);
oop defining_class_loader = k->class_loader();
event.set_definingClassLoader(defining_class_loader != NULL ?
defining_class_loader->klass() : (Klass*)NULL);
event.commit();
}
#endif /* INCLUDE_TRACE */