Mercurial > hg > graal-compiler
view src/share/vm/services/classLoadingService.cpp @ 6010:720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
Summary: Change the type of fields / variables / etc. that represent region counts and indeces from size_t to uint.
Reviewed-by: iveresov, brutisso, jmasa, jwilhelm
author | tonyp |
---|---|
date | Wed, 18 Apr 2012 07:21:15 -0400 |
parents | 436b4a3231bf |
children | da91efe96a93 |
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/* * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "classfile/systemDictionary.hpp" #include "memory/allocation.hpp" #include "memory/universe.hpp" #include "oops/oop.inline.hpp" #include "runtime/mutexLocker.hpp" #include "services/classLoadingService.hpp" #include "services/memoryService.hpp" #include "utilities/dtrace.hpp" #ifdef DTRACE_ENABLED // Only bother with this argument setup if dtrace is available #ifndef USDT2 HS_DTRACE_PROBE_DECL4(hotspot, class__loaded, char*, int, oop, bool); HS_DTRACE_PROBE_DECL4(hotspot, class__unloaded, char*, int, oop, bool); #define DTRACE_CLASSLOAD_PROBE(type, clss, shared) \ { \ char* data = NULL; \ int len = 0; \ Symbol* name = (clss)->name(); \ if (name != NULL) { \ data = (char*)name->bytes(); \ len = name->utf8_length(); \ } \ HS_DTRACE_PROBE4(hotspot, class__##type, \ data, len, (clss)->class_loader(), (shared)); \ } #else /* USDT2 */ #define HOTSPOT_CLASS_unloaded HOTSPOT_CLASS_UNLOADED #define HOTSPOT_CLASS_loaded HOTSPOT_CLASS_LOADED #define DTRACE_CLASSLOAD_PROBE(type, clss, shared) \ { \ char* data = NULL; \ int len = 0; \ Symbol* name = (clss)->name(); \ if (name != NULL) { \ data = (char*)name->bytes(); \ len = name->utf8_length(); \ } \ HOTSPOT_CLASS_##type( /* type = unloaded, loaded */ \ data, len, (clss)->class_loader(), (shared)); \ } #endif /* USDT2 */ #else // ndef DTRACE_ENABLED #define DTRACE_CLASSLOAD_PROBE(type, clss, shared) #endif // counters for classes loaded from class files PerfCounter* ClassLoadingService::_classes_loaded_count = NULL; PerfCounter* ClassLoadingService::_classes_unloaded_count = NULL; PerfCounter* ClassLoadingService::_classbytes_loaded = NULL; PerfCounter* ClassLoadingService::_classbytes_unloaded = NULL; // counters for classes loaded from shared archive PerfCounter* ClassLoadingService::_shared_classes_loaded_count = NULL; PerfCounter* ClassLoadingService::_shared_classes_unloaded_count = NULL; PerfCounter* ClassLoadingService::_shared_classbytes_loaded = NULL; PerfCounter* ClassLoadingService::_shared_classbytes_unloaded = NULL; PerfVariable* ClassLoadingService::_class_methods_size = NULL; void ClassLoadingService::init() { EXCEPTION_MARK; // These counters are for java.lang.management API support. // They are created even if -XX:-UsePerfData is set and in // that case, they will be allocated on C heap. _classes_loaded_count = PerfDataManager::create_counter(JAVA_CLS, "loadedClasses", PerfData::U_Events, CHECK); _classes_unloaded_count = PerfDataManager::create_counter(JAVA_CLS, "unloadedClasses", PerfData::U_Events, CHECK); _shared_classes_loaded_count = PerfDataManager::create_counter(JAVA_CLS, "sharedLoadedClasses", PerfData::U_Events, CHECK); _shared_classes_unloaded_count = PerfDataManager::create_counter(JAVA_CLS, "sharedUnloadedClasses", PerfData::U_Events, CHECK); if (UsePerfData) { _classbytes_loaded = PerfDataManager::create_counter(SUN_CLS, "loadedBytes", PerfData::U_Bytes, CHECK); _classbytes_unloaded = PerfDataManager::create_counter(SUN_CLS, "unloadedBytes", PerfData::U_Bytes, CHECK); _shared_classbytes_loaded = PerfDataManager::create_counter(SUN_CLS, "sharedLoadedBytes", PerfData::U_Bytes, CHECK); _shared_classbytes_unloaded = PerfDataManager::create_counter(SUN_CLS, "sharedUnloadedBytes", PerfData::U_Bytes, CHECK); _class_methods_size = PerfDataManager::create_variable(SUN_CLS, "methodBytes", PerfData::U_Bytes, CHECK); } } void ClassLoadingService::notify_class_unloaded(instanceKlass* k) { DTRACE_CLASSLOAD_PROBE(unloaded, k, false); // Classes that can be unloaded must be non-shared _classes_unloaded_count->inc(); if (UsePerfData) { // add the class size size_t size = compute_class_size(k); _classbytes_unloaded->inc(size); // Compute method size & subtract from running total. // We are called during phase 1 of mark sweep, so it's // still ok to iterate through methodOops here. objArrayOop methods = k->methods(); for (int i = 0; i < methods->length(); i++) { _class_methods_size->inc(-methods->obj_at(i)->size()); } } if (TraceClassUnloading) { ResourceMark rm; tty->print_cr("[Unloading class %s]", k->external_name()); } } void ClassLoadingService::notify_class_loaded(instanceKlass* k, bool shared_class) { DTRACE_CLASSLOAD_PROBE(loaded, k, shared_class); PerfCounter* classes_counter = (shared_class ? _shared_classes_loaded_count : _classes_loaded_count); // increment the count classes_counter->inc(); if (UsePerfData) { PerfCounter* classbytes_counter = (shared_class ? _shared_classbytes_loaded : _classbytes_loaded); // add the class size size_t size = compute_class_size(k); classbytes_counter->inc(size); } } size_t ClassLoadingService::compute_class_size(instanceKlass* k) { // lifted from ClassStatistics.do_class(klassOop k) size_t class_size = 0; class_size += k->as_klassOop()->size(); if (k->oop_is_instance()) { class_size += k->methods()->size(); class_size += k->constants()->size(); class_size += k->local_interfaces()->size(); class_size += k->transitive_interfaces()->size(); // We do not have to count implementors, since we only store one! class_size += k->fields()->size(); } return class_size * oopSize; } bool ClassLoadingService::set_verbose(bool verbose) { MutexLocker m(Management_lock); // verbose will be set to the previous value bool succeed = CommandLineFlags::boolAtPut((char*)"TraceClassLoading", &verbose, MANAGEMENT); assert(succeed, "Setting TraceClassLoading flag fails"); reset_trace_class_unloading(); return verbose; } // Caller to this function must own Management_lock void ClassLoadingService::reset_trace_class_unloading() { assert(Management_lock->owned_by_self(), "Must own the Management_lock"); bool value = MemoryService::get_verbose() || ClassLoadingService::get_verbose(); bool succeed = CommandLineFlags::boolAtPut((char*)"TraceClassUnloading", &value, MANAGEMENT); assert(succeed, "Setting TraceClassUnLoading flag fails"); } GrowableArray<KlassHandle>* LoadedClassesEnumerator::_loaded_classes = NULL; Thread* LoadedClassesEnumerator::_current_thread = NULL; LoadedClassesEnumerator::LoadedClassesEnumerator(Thread* cur_thread) { assert(cur_thread == Thread::current(), "Check current thread"); int init_size = ClassLoadingService::loaded_class_count(); _klass_handle_array = new GrowableArray<KlassHandle>(init_size); // For consistency of the loaded classes, grab the SystemDictionary lock MutexLocker sd_mutex(SystemDictionary_lock); // Set _loaded_classes and _current_thread and begin enumerating all classes. // Only one thread will do the enumeration at a time. // These static variables are needed and they are used by the static method // add_loaded_class called from classes_do(). _loaded_classes = _klass_handle_array; _current_thread = cur_thread; SystemDictionary::classes_do(&add_loaded_class); // FIXME: Exclude array klasses for now // Universe::basic_type_classes_do(&add_loaded_class); }