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comparison src/share/vm/classfile/classFileParser.cpp @ 875:6a93908f268f

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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 e5b0439ef4ae
children 494244ae0171
comparison
equal deleted inserted replaced
812:85d0690f7d12 875:6a93908f268f
545 545
546 objArrayHandle ClassFileParser::parse_interfaces(constantPoolHandle cp, 546 objArrayHandle ClassFileParser::parse_interfaces(constantPoolHandle cp,
547 int length, 547 int length,
548 Handle class_loader, 548 Handle class_loader,
549 Handle protection_domain, 549 Handle protection_domain,
550 PerfTraceTime* vmtimer,
551 symbolHandle class_name, 550 symbolHandle class_name,
552 TRAPS) { 551 TRAPS) {
553 ClassFileStream* cfs = stream(); 552 ClassFileStream* cfs = stream();
554 assert(length > 0, "only called for length>0"); 553 assert(length > 0, "only called for length>0");
555 objArrayHandle nullHandle; 554 objArrayHandle nullHandle;
573 // Don't need to check legal name because it's checked when parsing constant pool. 572 // Don't need to check legal name because it's checked when parsing constant pool.
574 // But need to make sure it's not an array type. 573 // But need to make sure it's not an array type.
575 guarantee_property(unresolved_klass->byte_at(0) != JVM_SIGNATURE_ARRAY, 574 guarantee_property(unresolved_klass->byte_at(0) != JVM_SIGNATURE_ARRAY,
576 "Bad interface name in class file %s", CHECK_(nullHandle)); 575 "Bad interface name in class file %s", CHECK_(nullHandle));
577 576
578 vmtimer->suspend(); // do not count recursive loading twice
579 // Call resolve_super so classcircularity is checked 577 // Call resolve_super so classcircularity is checked
580 klassOop k = SystemDictionary::resolve_super_or_fail(class_name, 578 klassOop k = SystemDictionary::resolve_super_or_fail(class_name,
581 unresolved_klass, class_loader, protection_domain, 579 unresolved_klass, class_loader, protection_domain,
582 false, CHECK_(nullHandle)); 580 false, CHECK_(nullHandle));
583 interf = KlassHandle(THREAD, k); 581 interf = KlassHandle(THREAD, k);
584 vmtimer->resume();
585 582
586 if (LinkWellKnownClasses) // my super type is well known to me 583 if (LinkWellKnownClasses) // my super type is well known to me
587 cp->klass_at_put(interface_index, interf()); // eagerly resolve 584 cp->klass_at_put(interface_index, interf()); // eagerly resolve
588 } 585 }
589 586
2556 unsigned char *cached_class_file_bytes = NULL; 2553 unsigned char *cached_class_file_bytes = NULL;
2557 jint cached_class_file_length; 2554 jint cached_class_file_length;
2558 2555
2559 ClassFileStream* cfs = stream(); 2556 ClassFileStream* cfs = stream();
2560 // Timing 2557 // Timing
2561 PerfTraceTime vmtimer(ClassLoader::perf_accumulated_time()); 2558 assert(THREAD->is_Java_thread(), "must be a JavaThread");
2559 JavaThread* jt = (JavaThread*) THREAD;
2560
2561 PerfClassTraceTime ctimer(ClassLoader::perf_class_parse_time(),
2562 ClassLoader::perf_class_parse_selftime(),
2563 NULL,
2564 jt->get_thread_stat()->perf_recursion_counts_addr(),
2565 jt->get_thread_stat()->perf_timers_addr(),
2566 PerfClassTraceTime::PARSE_CLASS);
2562 2567
2563 _has_finalizer = _has_empty_finalizer = _has_vanilla_constructor = false; 2568 _has_finalizer = _has_empty_finalizer = _has_vanilla_constructor = false;
2564 2569
2565 if (JvmtiExport::should_post_class_file_load_hook()) { 2570 if (JvmtiExport::should_post_class_file_load_hook()) {
2566 unsigned char* ptr = cfs->buffer(); 2571 unsigned char* ptr = cfs->buffer();
2736 u2 itfs_len = cfs->get_u2_fast(); 2741 u2 itfs_len = cfs->get_u2_fast();
2737 objArrayHandle local_interfaces; 2742 objArrayHandle local_interfaces;
2738 if (itfs_len == 0) { 2743 if (itfs_len == 0) {
2739 local_interfaces = objArrayHandle(THREAD, Universe::the_empty_system_obj_array()); 2744 local_interfaces = objArrayHandle(THREAD, Universe::the_empty_system_obj_array());
2740 } else { 2745 } else {
2741 local_interfaces = parse_interfaces(cp, itfs_len, class_loader, protection_domain, &vmtimer, _class_name, CHECK_(nullHandle)); 2746 local_interfaces = parse_interfaces(cp, itfs_len, class_loader, protection_domain, _class_name, CHECK_(nullHandle));
2742 } 2747 }
2743 2748
2744 // Fields (offsets are filled in later) 2749 // Fields (offsets are filled in later)
2745 struct FieldAllocationCount fac = {0,0,0,0,0,0,0,0,0,0}; 2750 struct FieldAllocationCount fac = {0,0,0,0,0,0,0,0,0,0};
2746 objArrayHandle fields_annotations; 2751 objArrayHandle fields_annotations;
2780 sk, 2785 sk,
2781 class_loader, 2786 class_loader,
2782 protection_domain, 2787 protection_domain,
2783 true, 2788 true,
2784 CHECK_(nullHandle)); 2789 CHECK_(nullHandle));
2790
2785 KlassHandle kh (THREAD, k); 2791 KlassHandle kh (THREAD, k);
2786 super_klass = instanceKlassHandle(THREAD, kh()); 2792 super_klass = instanceKlassHandle(THREAD, kh());
2787 if (LinkWellKnownClasses) // my super class is well known to me 2793 if (LinkWellKnownClasses) // my super class is well known to me
2788 cp->klass_at_put(super_class_index, super_klass()); // eagerly resolve 2794 cp->klass_at_put(super_class_index, super_klass()); // eagerly resolve
2789 } 2795 }