Mercurial > hg > truffle

diff src/share/vm/prims/jvm.cpp @ 875:6a93908f268f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
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
line wrap: on
line diff
--- 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;