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6603316: Improve instrumentation for classes loaded at startup

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Reviewed-by: xlu, mchung
This commit is contained in:
Karen Kinnear 2009-03-25 13:09:28 -04:00
parent 472349069b
commit 101468324d
4 changed files with 37 additions and 9 deletions
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15
hotspot/src/share/vm/prims/jni.cpp
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@ -301,6 +301,10 @@ JNI_ENTRY(jclass, jni_DefineClass(JNIEnv *env, const char *name, jobject loaderR
klassOop k = SystemDictionary::resolve_from_stream(class_name, class_loader,
Handle(), &st, CHECK_NULL);
if (TraceClassResolution && k != NULL) {
trace_class_resolution(k);
}
cls = (jclass)JNIHandles::make_local(
env, Klass::cast(k)->java_mirror());
return cls;
@ -365,6 +369,10 @@ JNI_ENTRY(jclass, jni_FindClass(JNIEnv *env, const char *name))
result = find_class_from_class_loader(env, sym, true, loader,
protection_domain, true, thread);
if (TraceClassResolution && result != NULL) {
trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result)));
}
// If we were the first invocation of jni_FindClass, we enable compilation again
// rather than just allowing invocation counter to overflow and decay.
// Controlled by flag DelayCompilationDuringStartup.
@ -2646,7 +2654,12 @@ static jclass lookupOne(JNIEnv* env, const char* name, TRAPS) {
Handle protection_domain; // null protection domain
symbolHandle sym = oopFactory::new_symbol_handle(name, CHECK_NULL);
return find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
jclass result = find_class_from_class_loader(env, sym, true, loader, protection_domain, true, CHECK_NULL);
if (TraceClassResolution && result != NULL) {
trace_class_resolution(java_lang_Class::as_klassOop(JNIHandles::resolve_non_null(result)));
}
return result;
}
// These lookups are done with the NULL (bootstrap) ClassLoader to