Mercurial > hg > truffle
diff src/share/vm/prims/jvm.cpp @ 875:6a93908f268f
6857194: Add hotspot perf counters to aid class loading performance measurement
Summary: Add new jvmstat counters to measure detailed class loading time
Reviewed-by: acorn, kamg
author | mchung |
---|---|
date | Fri, 10 Jul 2009 11:10:00 -0700 |
parents | be93aad57795 |
children | abe076e3636f |
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--- a/src/share/vm/prims/jvm.cpp Fri Jun 19 07:33:25 2009 -0700 +++ b/src/share/vm/prims/jvm.cpp Fri Jul 10 11:10:00 2009 -0700 @@ -756,6 +756,20 @@ static jclass jvm_define_class_common(JNIEnv *env, const char *name, jobject loader, const jbyte *buf, jsize len, jobject pd, const char *source, TRAPS) { if (source == NULL) source = "__JVM_DefineClass__"; + assert(THREAD->is_Java_thread(), "must be a JavaThread"); + JavaThread* jt = (JavaThread*) THREAD; + + PerfClassTraceTime vmtimer(ClassLoader::perf_define_appclass_time(), + ClassLoader::perf_define_appclass_selftime(), + ClassLoader::perf_define_appclasses(), + jt->get_thread_stat()->perf_recursion_counts_addr(), + jt->get_thread_stat()->perf_timers_addr(), + PerfClassTraceTime::DEFINE_CLASS); + + if (UsePerfData) { + ClassLoader::perf_app_classfile_bytes_read()->inc(len); + } + // Since exceptions can be thrown, class initialization can take place // if name is NULL no check for class name in .class stream has to be made. symbolHandle class_name;