| /* |
| * Copyright (c) 2016, 2019, 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/classLoaderDataGraph.hpp" |
| #include "classfile/javaClasses.inline.hpp" |
| #include "classfile/moduleEntry.hpp" |
| #include "classfile/packageEntry.hpp" |
| #include "classfile/symbolTable.hpp" |
| #include "jfr/jfr.hpp" |
| #include "jfr/jni/jfrGetAllEventClasses.hpp" |
| #include "jfr/leakprofiler/checkpoint/objectSampleCheckpoint.hpp" |
| #include "jfr/recorder/checkpoint/types/jfrTypeSet.hpp" |
| #include "jfr/recorder/checkpoint/types/jfrTypeSetUtils.hpp" |
| #include "jfr/recorder/checkpoint/types/traceid/jfrTraceId.inline.hpp" |
| #include "jfr/utilities/jfrHashtable.hpp" |
| #include "jfr/utilities/jfrTypes.hpp" |
| #include "jfr/writers/jfrTypeWriterHost.hpp" |
| #include "memory/iterator.hpp" |
| #include "memory/resourceArea.hpp" |
| #include "oops/instanceKlass.hpp" |
| #include "oops/objArrayKlass.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "utilities/accessFlags.hpp" |
| #include "utilities/bitMap.inline.hpp" |
| |
| typedef const Klass* KlassPtr; |
| typedef const PackageEntry* PkgPtr; |
| typedef const ModuleEntry* ModPtr; |
| typedef const ClassLoaderData* CldPtr; |
| typedef const Method* MethodPtr; |
| typedef const Symbol* SymbolPtr; |
| typedef const JfrSymbolId::SymbolEntry* SymbolEntryPtr; |
| typedef const JfrSymbolId::CStringEntry* CStringEntryPtr; |
| |
| static JfrCheckpointWriter* _writer = NULL; |
| static JfrCheckpointWriter* _leakp_writer = NULL; |
| static JfrArtifactSet* _artifacts = NULL; |
| static JfrArtifactClosure* _subsystem_callback = NULL; |
| static bool _class_unload = false; |
| static bool _flushpoint = false; |
| |
| // incremented on each rotation |
| static u8 checkpoint_id = 1; |
| |
| // creates a unique id by combining a checkpoint relative symbol id (2^24) |
| // with the current checkpoint id (2^40) |
| #define CREATE_SYMBOL_ID(sym_id) (((u8)((checkpoint_id << 24) | sym_id))) |
| |
| static traceid create_symbol_id(traceid artifact_id) { |
| return artifact_id != 0 ? CREATE_SYMBOL_ID(artifact_id) : 0; |
| } |
| |
| static bool current_epoch() { |
| return _class_unload || _flushpoint; |
| } |
| |
| static bool previous_epoch() { |
| return !current_epoch(); |
| } |
| |
| static bool is_complete() { |
| return !_artifacts->has_klass_entries() && current_epoch(); |
| } |
| |
| static traceid mark_symbol(KlassPtr klass, bool leakp) { |
| return klass != NULL ? create_symbol_id(_artifacts->mark(klass, leakp)) : 0; |
| } |
| |
| static traceid mark_symbol(Symbol* symbol, bool leakp) { |
| return symbol != NULL ? create_symbol_id(_artifacts->mark(symbol, leakp)) : 0; |
| } |
| |
| static traceid get_bootstrap_name(bool leakp) { |
| return create_symbol_id(_artifacts->bootstrap_name(leakp)); |
| } |
| |
| template <typename T> |
| static traceid artifact_id(const T* ptr) { |
| assert(ptr != NULL, "invariant"); |
| return TRACE_ID(ptr); |
| } |
| |
| static traceid package_id(KlassPtr klass, bool leakp) { |
| assert(klass != NULL, "invariant"); |
| PkgPtr pkg_entry = klass->package(); |
| if (pkg_entry == NULL) { |
| return 0; |
| } |
| if (leakp) { |
| SET_LEAKP(pkg_entry); |
| } |
| // package implicitly tagged already |
| return artifact_id(pkg_entry); |
| } |
| |
| static traceid module_id(PkgPtr pkg, bool leakp) { |
| assert(pkg != NULL, "invariant"); |
| ModPtr module_entry = pkg->module(); |
| if (module_entry == NULL) { |
| return 0; |
| } |
| if (leakp) { |
| SET_LEAKP(module_entry); |
| } else { |
| SET_TRANSIENT(module_entry); |
| } |
| return artifact_id(module_entry); |
| } |
| |
| static traceid method_id(KlassPtr klass, MethodPtr method) { |
| assert(klass != NULL, "invariant"); |
| assert(method != NULL, "invariant"); |
| return METHOD_ID(klass, method); |
| } |
| |
| static traceid cld_id(CldPtr cld, bool leakp) { |
| assert(cld != NULL, "invariant"); |
| assert(!cld->is_unsafe_anonymous(), "invariant"); |
| if (leakp) { |
| SET_LEAKP(cld); |
| } else { |
| SET_TRANSIENT(cld); |
| } |
| return artifact_id(cld); |
| } |
| |
| template <typename T> |
| static s4 get_flags(const T* ptr) { |
| assert(ptr != NULL, "invariant"); |
| return ptr->access_flags().get_flags(); |
| } |
| |
| static bool is_unsafe_anonymous(const Klass* klass) { |
| assert(klass != NULL, "invariant"); |
| return klass->is_instance_klass() && ((const InstanceKlass*)klass)->is_unsafe_anonymous(); |
| } |
| |
| static ClassLoaderData* get_cld(const Klass* klass) { |
| assert(klass != NULL, "invariant"); |
| return is_unsafe_anonymous(klass) ? |
| InstanceKlass::cast(klass)->unsafe_anonymous_host()->class_loader_data() : klass->class_loader_data(); |
| } |
| |
| template <typename T> |
| static void set_serialized(const T* ptr) { |
| assert(ptr != NULL, "invariant"); |
| SET_SERIALIZED(ptr); |
| assert(IS_SERIALIZED(ptr), "invariant"); |
| } |
| |
| /* |
| * In C++03, functions used as template parameters must have external linkage; |
| * this restriction was removed in C++11. Change back to "static" and |
| * rename functions when C++11 becomes available. |
| * |
| * The weird naming is an effort to decrease the risk of name clashes. |
| */ |
| |
| static int write_klass(JfrCheckpointWriter* writer, KlassPtr klass, bool leakp) { |
| assert(writer != NULL, "invariant"); |
| assert(_artifacts != NULL, "invariant"); |
| assert(klass != NULL, "invariant"); |
| traceid pkg_id = 0; |
| KlassPtr theklass = klass; |
| if (theklass->is_objArray_klass()) { |
| const ObjArrayKlass* obj_arr_klass = ObjArrayKlass::cast(klass); |
| theklass = obj_arr_klass->bottom_klass(); |
| } |
| if (theklass->is_instance_klass()) { |
| pkg_id = package_id(theklass, leakp); |
| } else { |
| assert(theklass->is_typeArray_klass(), "invariant"); |
| } |
| writer->write(artifact_id(klass)); |
| writer->write(cld_id(get_cld(klass), leakp)); |
| writer->write(mark_symbol(klass, leakp)); |
| writer->write(pkg_id); |
| writer->write(get_flags(klass)); |
| return 1; |
| } |
| |
| int write__klass(JfrCheckpointWriter* writer, const void* k) { |
| assert(k != NULL, "invariant"); |
| KlassPtr klass = (KlassPtr)k; |
| set_serialized(klass); |
| return write_klass(writer, klass, false); |
| } |
| |
| int write__klass__leakp(JfrCheckpointWriter* writer, const void* k) { |
| assert(k != NULL, "invariant"); |
| KlassPtr klass = (KlassPtr)k; |
| return write_klass(writer, klass, true); |
| } |
| |
| static bool is_implied(const Klass* klass) { |
| assert(klass != NULL, "invariant"); |
| return klass->is_subclass_of(SystemDictionary::ClassLoader_klass()) || klass == SystemDictionary::Object_klass(); |
| } |
| |
| static void do_implied(Klass* klass) { |
| assert(klass != NULL, "invariant"); |
| if (is_implied(klass)) { |
| if (_leakp_writer != NULL) { |
| SET_LEAKP(klass); |
| } |
| _subsystem_callback->do_artifact(klass); |
| } |
| } |
| |
| static void do_unloaded_klass(Klass* klass) { |
| assert(klass != NULL, "invariant"); |
| assert(_subsystem_callback != NULL, "invariant"); |
| if (IS_JDK_JFR_EVENT_SUBKLASS(klass)) { |
| JfrEventClasses::increment_unloaded_event_class(); |
| } |
| if (USED_THIS_EPOCH(klass)) { |
| ObjectSampleCheckpoint::on_klass_unload(klass); |
| _subsystem_callback->do_artifact(klass); |
| return; |
| } |
| do_implied(klass); |
| } |
| |
| static void do_klass(Klass* klass) { |
| assert(klass != NULL, "invariant"); |
| assert(_subsystem_callback != NULL, "invariant"); |
| if (_flushpoint) { |
| if (USED_THIS_EPOCH(klass)) { |
| _subsystem_callback->do_artifact(klass); |
| return; |
| } |
| } else { |
| if (USED_PREV_EPOCH(klass)) { |
| _subsystem_callback->do_artifact(klass); |
| return; |
| } |
| } |
| do_implied(klass); |
| } |
| |
| static void do_klasses() { |
| if (_class_unload) { |
| ClassLoaderDataGraph::classes_unloading_do(&do_unloaded_klass); |
| return; |
| } |
| ClassLoaderDataGraph::classes_do(&do_klass); |
| } |
| |
| typedef SerializePredicate<KlassPtr> KlassPredicate; |
| typedef JfrPredicatedTypeWriterImplHost<KlassPtr, KlassPredicate, write__klass> KlassWriterImpl; |
| typedef JfrTypeWriterHost<KlassWriterImpl, TYPE_CLASS> KlassWriter; |
| typedef CompositeFunctor<KlassPtr, KlassWriter, KlassArtifactRegistrator> KlassWriterRegistration; |
| typedef JfrArtifactCallbackHost<KlassPtr, KlassWriterRegistration> KlassCallback; |
| |
| template <> |
| class LeakPredicate<const Klass*> { |
| public: |
| LeakPredicate(bool class_unload) {} |
| bool operator()(const Klass* klass) { |
| assert(klass != NULL, "invariant"); |
| return IS_LEAKP(klass) || is_implied(klass); |
| } |
| }; |
| |
| typedef LeakPredicate<KlassPtr> LeakKlassPredicate; |
| typedef JfrPredicatedTypeWriterImplHost<KlassPtr, LeakKlassPredicate, write__klass__leakp> LeakKlassWriterImpl; |
| typedef JfrTypeWriterHost<LeakKlassWriterImpl, TYPE_CLASS> LeakKlassWriter; |
| |
| typedef CompositeFunctor<KlassPtr, LeakKlassWriter, KlassWriter> CompositeKlassWriter; |
| typedef CompositeFunctor<KlassPtr, CompositeKlassWriter, KlassArtifactRegistrator> CompositeKlassWriterRegistration; |
| typedef JfrArtifactCallbackHost<KlassPtr, CompositeKlassWriterRegistration> CompositeKlassCallback; |
| |
| static bool write_klasses() { |
| assert(!_artifacts->has_klass_entries(), "invariant"); |
| assert(_writer != NULL, "invariant"); |
| KlassArtifactRegistrator reg(_artifacts); |
| KlassWriter kw(_writer, _class_unload); |
| KlassWriterRegistration kwr(&kw, ®); |
| if (_leakp_writer == NULL) { |
| KlassCallback callback(&kwr); |
| _subsystem_callback = &callback; |
| do_klasses(); |
| } else { |
| LeakKlassWriter lkw(_leakp_writer, _artifacts, _class_unload); |
| CompositeKlassWriter ckw(&lkw, &kw); |
| CompositeKlassWriterRegistration ckwr(&ckw, ®); |
| CompositeKlassCallback callback(&ckwr); |
| _subsystem_callback = &callback; |
| do_klasses(); |
| } |
| if (is_complete()) { |
| return false; |
| } |
| _artifacts->tally(kw); |
| return true; |
| } |
| |
| template <typename T> |
| static void do_previous_epoch_artifact(JfrArtifactClosure* callback, T* value) { |
| assert(callback != NULL, "invariant"); |
| assert(value != NULL, "invariant"); |
| if (USED_PREV_EPOCH(value)) { |
| callback->do_artifact(value); |
| assert(IS_NOT_SERIALIZED(value), "invariant"); |
| return; |
| } |
| if (IS_SERIALIZED(value)) { |
| CLEAR_SERIALIZED(value); |
| } |
| assert(IS_NOT_SERIALIZED(value), "invariant"); |
| } |
| |
| static int write_package(JfrCheckpointWriter* writer, PkgPtr pkg, bool leakp) { |
| assert(writer != NULL, "invariant"); |
| assert(_artifacts != NULL, "invariant"); |
| assert(pkg != NULL, "invariant"); |
| writer->write(artifact_id(pkg)); |
| writer->write(mark_symbol(pkg->name(), leakp)); |
| writer->write(module_id(pkg, leakp)); |
| writer->write((bool)pkg->is_exported()); |
| return 1; |
| } |
| |
| int write__package(JfrCheckpointWriter* writer, const void* p) { |
| assert(p != NULL, "invariant"); |
| PkgPtr pkg = (PkgPtr)p; |
| set_serialized(pkg); |
| return write_package(writer, pkg, false); |
| } |
| |
| int write__package__leakp(JfrCheckpointWriter* writer, const void* p) { |
| assert(p != NULL, "invariant"); |
| PkgPtr pkg = (PkgPtr)p; |
| CLEAR_LEAKP(pkg); |
| return write_package(writer, pkg, true); |
| } |
| |
| static void do_package(PackageEntry* entry) { |
| do_previous_epoch_artifact(_subsystem_callback, entry); |
| } |
| |
| static void do_packages() { |
| ClassLoaderDataGraph::packages_do(&do_package); |
| } |
| |
| class PackageFieldSelector { |
| public: |
| typedef PkgPtr TypePtr; |
| static TypePtr select(KlassPtr klass) { |
| assert(klass != NULL, "invariant"); |
| return ((InstanceKlass*)klass)->package(); |
| } |
| }; |
| |
| typedef SerializePredicate<PkgPtr> PackagePredicate; |
| typedef JfrPredicatedTypeWriterImplHost<PkgPtr, PackagePredicate, write__package> PackageWriterImpl; |
| typedef JfrTypeWriterHost<PackageWriterImpl, TYPE_PACKAGE> PackageWriter; |
| typedef CompositeFunctor<PkgPtr, PackageWriter, ClearArtifact<PkgPtr> > PackageWriterWithClear; |
| typedef KlassToFieldEnvelope<PackageFieldSelector, PackageWriter> KlassPackageWriter; |
| typedef JfrArtifactCallbackHost<PkgPtr, PackageWriterWithClear> PackageCallback; |
| |
| typedef LeakPredicate<PkgPtr> LeakPackagePredicate; |
| typedef JfrPredicatedTypeWriterImplHost<PkgPtr, LeakPackagePredicate, write__package__leakp> LeakPackageWriterImpl; |
| typedef JfrTypeWriterHost<LeakPackageWriterImpl, TYPE_PACKAGE> LeakPackageWriter; |
| |
| typedef CompositeFunctor<PkgPtr, LeakPackageWriter, PackageWriter> CompositePackageWriter; |
| typedef KlassToFieldEnvelope<PackageFieldSelector, CompositePackageWriter> KlassCompositePackageWriter; |
| typedef KlassToFieldEnvelope<PackageFieldSelector, PackageWriterWithClear> KlassPackageWriterWithClear; |
| typedef CompositeFunctor<PkgPtr, CompositePackageWriter, ClearArtifact<PkgPtr> > CompositePackageWriterWithClear; |
| typedef JfrArtifactCallbackHost<PkgPtr, CompositePackageWriterWithClear> CompositePackageCallback; |
| |
| static void write_packages() { |
| assert(_writer != NULL, "invariant"); |
| PackageWriter pw(_writer, _class_unload); |
| KlassPackageWriter kpw(&pw); |
| if (current_epoch()) { |
| _artifacts->iterate_klasses(kpw); |
| _artifacts->tally(pw); |
| return; |
| } |
| assert(previous_epoch(), "invariant"); |
| if (_leakp_writer == NULL) { |
| _artifacts->iterate_klasses(kpw); |
| ClearArtifact<PkgPtr> clear; |
| PackageWriterWithClear pwwc(&pw, &clear); |
| PackageCallback callback(&pwwc); |
| _subsystem_callback = &callback; |
| do_packages(); |
| } else { |
| LeakPackageWriter lpw(_leakp_writer, _class_unload); |
| CompositePackageWriter cpw(&lpw, &pw); |
| KlassCompositePackageWriter kcpw(&cpw); |
| _artifacts->iterate_klasses(kcpw); |
| ClearArtifact<PkgPtr> clear; |
| CompositePackageWriterWithClear cpwwc(&cpw, &clear); |
| CompositePackageCallback callback(&cpwwc); |
| _subsystem_callback = &callback; |
| do_packages(); |
| } |
| _artifacts->tally(pw); |
| } |
| |
| static int write_module(JfrCheckpointWriter* writer, ModPtr mod, bool leakp) { |
| assert(mod != NULL, "invariant"); |
| assert(_artifacts != NULL, "invariant"); |
| writer->write(artifact_id(mod)); |
| writer->write(mark_symbol(mod->name(), leakp)); |
| writer->write(mark_symbol(mod->version(), leakp)); |
| writer->write(mark_symbol(mod->location(), leakp)); |
| writer->write(cld_id(mod->loader_data(), leakp)); |
| return 1; |
| } |
| |
| int write__module(JfrCheckpointWriter* writer, const void* m) { |
| assert(m != NULL, "invariant"); |
| ModPtr mod = (ModPtr)m; |
| set_serialized(mod); |
| return write_module(writer, mod, false); |
| } |
| |
| int write__module__leakp(JfrCheckpointWriter* writer, const void* m) { |
| assert(m != NULL, "invariant"); |
| ModPtr mod = (ModPtr)m; |
| CLEAR_LEAKP(mod); |
| return write_module(writer, mod, true); |
| } |
| |
| static void do_module(ModuleEntry* entry) { |
| do_previous_epoch_artifact(_subsystem_callback, entry); |
| } |
| |
| static void do_modules() { |
| ClassLoaderDataGraph::modules_do(&do_module); |
| } |
| |
| class ModuleFieldSelector { |
| public: |
| typedef ModPtr TypePtr; |
| static TypePtr select(KlassPtr klass) { |
| assert(klass != NULL, "invariant"); |
| PkgPtr pkg = klass->package(); |
| return pkg != NULL ? pkg->module() : NULL; |
| } |
| }; |
| |
| typedef SerializePredicate<ModPtr> ModulePredicate; |
| typedef JfrPredicatedTypeWriterImplHost<ModPtr, ModulePredicate, write__module> ModuleWriterImpl; |
| typedef JfrTypeWriterHost<ModuleWriterImpl, TYPE_MODULE> ModuleWriter; |
| typedef CompositeFunctor<ModPtr, ModuleWriter, ClearArtifact<ModPtr> > ModuleWriterWithClear; |
| typedef JfrArtifactCallbackHost<ModPtr, ModuleWriterWithClear> ModuleCallback; |
| typedef KlassToFieldEnvelope<ModuleFieldSelector, ModuleWriter> KlassModuleWriter; |
| |
| typedef LeakPredicate<ModPtr> LeakModulePredicate; |
| typedef JfrPredicatedTypeWriterImplHost<ModPtr, LeakModulePredicate, write__module__leakp> LeakModuleWriterImpl; |
| typedef JfrTypeWriterHost<LeakModuleWriterImpl, TYPE_MODULE> LeakModuleWriter; |
| |
| typedef CompositeFunctor<ModPtr, LeakModuleWriter, ModuleWriter> CompositeModuleWriter; |
| typedef KlassToFieldEnvelope<ModuleFieldSelector, CompositeModuleWriter> KlassCompositeModuleWriter; |
| typedef CompositeFunctor<ModPtr, CompositeModuleWriter, ClearArtifact<ModPtr> > CompositeModuleWriterWithClear; |
| typedef JfrArtifactCallbackHost<ModPtr, CompositeModuleWriterWithClear> CompositeModuleCallback; |
| |
| static void write_modules() { |
| assert(_writer != NULL, "invariant"); |
| ModuleWriter mw(_writer, _class_unload); |
| KlassModuleWriter kmw(&mw); |
| if (current_epoch()) { |
| _artifacts->iterate_klasses(kmw); |
| _artifacts->tally(mw); |
| return; |
| } |
| assert(previous_epoch(), "invariant"); |
| if (_leakp_writer == NULL) { |
| _artifacts->iterate_klasses(kmw); |
| ClearArtifact<ModPtr> clear; |
| ModuleWriterWithClear mwwc(&mw, &clear); |
| ModuleCallback callback(&mwwc); |
| _subsystem_callback = &callback; |
| do_modules(); |
| } else { |
| LeakModuleWriter lmw(_leakp_writer, _class_unload); |
| CompositeModuleWriter cmw(&lmw, &mw); |
| KlassCompositeModuleWriter kcpw(&cmw); |
| _artifacts->iterate_klasses(kcpw); |
| ClearArtifact<ModPtr> clear; |
| CompositeModuleWriterWithClear cmwwc(&cmw, &clear); |
| CompositeModuleCallback callback(&cmwwc); |
| _subsystem_callback = &callback; |
| do_modules(); |
| } |
| _artifacts->tally(mw); |
| } |
| |
| static int write_classloader(JfrCheckpointWriter* writer, CldPtr cld, bool leakp) { |
| assert(cld != NULL, "invariant"); |
| assert(!cld->is_unsafe_anonymous(), "invariant"); |
| // class loader type |
| const Klass* class_loader_klass = cld->class_loader_klass(); |
| if (class_loader_klass == NULL) { |
| // (primordial) boot class loader |
| writer->write(artifact_id(cld)); // class loader instance id |
| writer->write((traceid)0); // class loader type id (absence of) |
| writer->write(get_bootstrap_name(leakp)); // maps to synthetic name -> "bootstrap" |
| } else { |
| writer->write(artifact_id(cld)); // class loader instance id |
| writer->write(artifact_id(class_loader_klass)); // class loader type id |
| writer->write(mark_symbol(cld->name(), leakp)); // class loader instance name |
| } |
| return 1; |
| } |
| |
| int write__classloader(JfrCheckpointWriter* writer, const void* c) { |
| assert(c != NULL, "invariant"); |
| CldPtr cld = (CldPtr)c; |
| set_serialized(cld); |
| return write_classloader(writer, cld, false); |
| } |
| |
| int write__classloader__leakp(JfrCheckpointWriter* writer, const void* c) { |
| assert(c != NULL, "invariant"); |
| CldPtr cld = (CldPtr)c; |
| CLEAR_LEAKP(cld); |
| return write_classloader(writer, cld, true); |
| } |
| |
| static void do_class_loader_data(ClassLoaderData* cld) { |
| do_previous_epoch_artifact(_subsystem_callback, cld); |
| } |
| |
| class KlassCldFieldSelector { |
| public: |
| typedef CldPtr TypePtr; |
| static TypePtr select(KlassPtr klass) { |
| assert(klass != NULL, "invariant"); |
| return get_cld(klass); |
| } |
| }; |
| |
| class ModuleCldFieldSelector { |
| public: |
| typedef CldPtr TypePtr; |
| static TypePtr select(KlassPtr klass) { |
| assert(klass != NULL, "invariant"); |
| ModPtr mod = ModuleFieldSelector::select(klass); |
| return mod != NULL ? mod->loader_data() : NULL; |
| } |
| }; |
| |
| class CLDCallback : public CLDClosure { |
| public: |
| CLDCallback() {} |
| void do_cld(ClassLoaderData* cld) { |
| assert(cld != NULL, "invariant"); |
| if (cld->is_unsafe_anonymous()) { |
| return; |
| } |
| do_class_loader_data(cld); |
| } |
| }; |
| |
| static void do_class_loaders() { |
| CLDCallback cld_cb; |
| ClassLoaderDataGraph::loaded_cld_do(&cld_cb); |
| } |
| |
| typedef SerializePredicate<CldPtr> CldPredicate; |
| typedef JfrPredicatedTypeWriterImplHost<CldPtr, CldPredicate, write__classloader> CldWriterImpl; |
| typedef JfrTypeWriterHost<CldWriterImpl, TYPE_CLASSLOADER> CldWriter; |
| typedef CompositeFunctor<CldPtr, CldWriter, ClearArtifact<CldPtr> > CldWriterWithClear; |
| typedef JfrArtifactCallbackHost<CldPtr, CldWriterWithClear> CldCallback; |
| typedef KlassToFieldEnvelope<KlassCldFieldSelector, CldWriter> KlassCldWriter; |
| typedef KlassToFieldEnvelope<ModuleCldFieldSelector, CldWriter> ModuleCldWriter; |
| typedef CompositeFunctor<KlassPtr, KlassCldWriter, ModuleCldWriter> KlassAndModuleCldWriter; |
| |
| typedef LeakPredicate<CldPtr> LeakCldPredicate; |
| typedef JfrPredicatedTypeWriterImplHost<CldPtr, LeakCldPredicate, write__classloader__leakp> LeakCldWriterImpl; |
| typedef JfrTypeWriterHost<LeakCldWriterImpl, TYPE_CLASSLOADER> LeakCldWriter; |
| |
| typedef CompositeFunctor<CldPtr, LeakCldWriter, CldWriter> CompositeCldWriter; |
| typedef KlassToFieldEnvelope<KlassCldFieldSelector, CompositeCldWriter> KlassCompositeCldWriter; |
| typedef KlassToFieldEnvelope<ModuleCldFieldSelector, CompositeCldWriter> ModuleCompositeCldWriter; |
| typedef CompositeFunctor<KlassPtr, KlassCompositeCldWriter, ModuleCompositeCldWriter> KlassAndModuleCompositeCldWriter; |
| typedef CompositeFunctor<CldPtr, CompositeCldWriter, ClearArtifact<CldPtr> > CompositeCldWriterWithClear; |
| typedef JfrArtifactCallbackHost<CldPtr, CompositeCldWriterWithClear> CompositeCldCallback; |
| |
| static void write_classloaders() { |
| assert(_writer != NULL, "invariant"); |
| CldWriter cldw(_writer, _class_unload); |
| KlassCldWriter kcw(&cldw); |
| ModuleCldWriter mcw(&cldw); |
| KlassAndModuleCldWriter kmcw(&kcw, &mcw); |
| if (current_epoch()) { |
| _artifacts->iterate_klasses(kmcw); |
| _artifacts->tally(cldw); |
| return; |
| } |
| assert(previous_epoch(), "invariant"); |
| if (_leakp_writer == NULL) { |
| _artifacts->iterate_klasses(kmcw); |
| ClearArtifact<CldPtr> clear; |
| CldWriterWithClear cldwwc(&cldw, &clear); |
| CldCallback callback(&cldwwc); |
| _subsystem_callback = &callback; |
| do_class_loaders(); |
| } else { |
| LeakCldWriter lcldw(_leakp_writer, _class_unload); |
| CompositeCldWriter ccldw(&lcldw, &cldw); |
| KlassCompositeCldWriter kccldw(&ccldw); |
| ModuleCompositeCldWriter mccldw(&ccldw); |
| KlassAndModuleCompositeCldWriter kmccldw(&kccldw, &mccldw); |
| _artifacts->iterate_klasses(kmccldw); |
| ClearArtifact<CldPtr> clear; |
| CompositeCldWriterWithClear ccldwwc(&ccldw, &clear); |
| CompositeCldCallback callback(&ccldwwc); |
| _subsystem_callback = &callback; |
| do_class_loaders(); |
| } |
| _artifacts->tally(cldw); |
| } |
| |
| static u1 get_visibility(MethodPtr method) { |
| assert(method != NULL, "invariant"); |
| return const_cast<Method*>(method)->is_hidden() ? (u1)1 : (u1)0; |
| } |
| |
| template <> |
| void set_serialized<Method>(MethodPtr method) { |
| assert(method != NULL, "invariant"); |
| SET_METHOD_SERIALIZED(method); |
| assert(IS_METHOD_SERIALIZED(method), "invariant"); |
| } |
| |
| static int write_method(JfrCheckpointWriter* writer, MethodPtr method, bool leakp) { |
| assert(writer != NULL, "invariant"); |
| assert(method != NULL, "invariant"); |
| assert(_artifacts != NULL, "invariant"); |
| KlassPtr klass = method->method_holder(); |
| assert(klass != NULL, "invariant"); |
| writer->write(method_id(klass, method)); |
| writer->write(artifact_id(klass)); |
| writer->write(mark_symbol(method->name(), leakp)); |
| writer->write(mark_symbol(method->signature(), leakp)); |
| writer->write((u2)get_flags(method)); |
| writer->write(get_visibility(method)); |
| return 1; |
| } |
| |
| int write__method(JfrCheckpointWriter* writer, const void* m) { |
| assert(m != NULL, "invariant"); |
| MethodPtr method = (MethodPtr)m; |
| set_serialized(method); |
| return write_method(writer, method, false); |
| } |
| |
| int write__method__leakp(JfrCheckpointWriter* writer, const void* m) { |
| assert(m != NULL, "invariant"); |
| MethodPtr method = (MethodPtr)m; |
| return write_method(writer, method, true); |
| } |
| |
| class BitMapFilter { |
| ResourceBitMap _bitmap; |
| public: |
| explicit BitMapFilter(int length = 0) : _bitmap((size_t)length) {} |
| bool operator()(size_t idx) { |
| if (_bitmap.size() == 0) { |
| return true; |
| } |
| if (_bitmap.at(idx)) { |
| return false; |
| } |
| _bitmap.set_bit(idx); |
| return true; |
| } |
| }; |
| |
| class AlwaysTrue { |
| public: |
| explicit AlwaysTrue(int length = 0) {} |
| bool operator()(size_t idx) { |
| return true; |
| } |
| }; |
| |
| template <typename MethodCallback, typename KlassCallback, class Filter, bool leakp> |
| class MethodIteratorHost { |
| private: |
| MethodCallback _method_cb; |
| KlassCallback _klass_cb; |
| MethodUsedPredicate<leakp> _method_used_predicate; |
| MethodFlagPredicate<leakp> _method_flag_predicate; |
| public: |
| MethodIteratorHost(JfrCheckpointWriter* writer, |
| bool current_epoch = false, |
| bool class_unload = false, |
| bool skip_header = false) : |
| _method_cb(writer, class_unload, skip_header), |
| _klass_cb(writer, class_unload, skip_header), |
| _method_used_predicate(current_epoch), |
| _method_flag_predicate(current_epoch) {} |
| |
| bool operator()(KlassPtr klass) { |
| if (_method_used_predicate(klass)) { |
| const InstanceKlass* ik = InstanceKlass::cast(klass); |
| const int len = ik->methods()->length(); |
| Filter filter(ik->previous_versions() != NULL ? len : 0); |
| while (ik != NULL) { |
| for (int i = 0; i < len; ++i) { |
| MethodPtr method = ik->methods()->at(i); |
| if (_method_flag_predicate(method) && filter(i)) { |
| _method_cb(method); |
| } |
| } |
| // There can be multiple versions of the same method running |
| // due to redefinition. Need to inspect the complete set of methods. |
| ik = ik->previous_versions(); |
| } |
| } |
| return _klass_cb(klass); |
| } |
| |
| int count() const { return _method_cb.count(); } |
| void add(int count) { _method_cb.add(count); } |
| }; |
| |
| template <typename T, template <typename> class Impl> |
| class Wrapper { |
| Impl<T> _t; |
| public: |
| Wrapper(JfrCheckpointWriter*, bool, bool) : _t() {} |
| bool operator()(T const& value) { |
| return _t(value); |
| } |
| }; |
| |
| template <typename T> |
| class EmptyStub { |
| public: |
| bool operator()(T const& value) { return true; } |
| }; |
| |
| typedef SerializePredicate<MethodPtr> MethodPredicate; |
| typedef JfrPredicatedTypeWriterImplHost<MethodPtr, MethodPredicate, write__method> MethodWriterImplTarget; |
| typedef Wrapper<KlassPtr, EmptyStub> KlassCallbackStub; |
| typedef JfrTypeWriterHost<MethodWriterImplTarget, TYPE_METHOD> MethodWriterImpl; |
| typedef MethodIteratorHost<MethodWriterImpl, KlassCallbackStub, BitMapFilter, false> MethodWriter; |
| |
| typedef LeakPredicate<MethodPtr> LeakMethodPredicate; |
| typedef JfrPredicatedTypeWriterImplHost<MethodPtr, LeakMethodPredicate, write__method__leakp> LeakMethodWriterImplTarget; |
| typedef JfrTypeWriterHost<LeakMethodWriterImplTarget, TYPE_METHOD> LeakMethodWriterImpl; |
| typedef MethodIteratorHost<LeakMethodWriterImpl, KlassCallbackStub, BitMapFilter, true> LeakMethodWriter; |
| typedef MethodIteratorHost<LeakMethodWriterImpl, KlassCallbackStub, BitMapFilter, true> LeakMethodWriter; |
| typedef CompositeFunctor<KlassPtr, LeakMethodWriter, MethodWriter> CompositeMethodWriter; |
| |
| static void write_methods() { |
| assert(_writer != NULL, "invariant"); |
| MethodWriter mw(_writer, current_epoch(), _class_unload); |
| if (_leakp_writer == NULL) { |
| _artifacts->iterate_klasses(mw); |
| } else { |
| LeakMethodWriter lpmw(_leakp_writer, current_epoch(), _class_unload); |
| CompositeMethodWriter cmw(&lpmw, &mw); |
| _artifacts->iterate_klasses(cmw); |
| } |
| _artifacts->tally(mw); |
| } |
| |
| template <> |
| void set_serialized<JfrSymbolId::SymbolEntry>(SymbolEntryPtr ptr) { |
| assert(ptr != NULL, "invariant"); |
| ptr->set_serialized(); |
| assert(ptr->is_serialized(), "invariant"); |
| } |
| |
| template <> |
| void set_serialized<JfrSymbolId::CStringEntry>(CStringEntryPtr ptr) { |
| assert(ptr != NULL, "invariant"); |
| ptr->set_serialized(); |
| assert(ptr->is_serialized(), "invariant"); |
| } |
| |
| static int write_symbol(JfrCheckpointWriter* writer, SymbolEntryPtr entry, bool leakp) { |
| assert(writer != NULL, "invariant"); |
| assert(entry != NULL, "invariant"); |
| ResourceMark rm; |
| writer->write(create_symbol_id(entry->id())); |
| writer->write(entry->value()->as_C_string()); |
| return 1; |
| } |
| |
| int write__symbol(JfrCheckpointWriter* writer, const void* e) { |
| assert(e != NULL, "invariant"); |
| SymbolEntryPtr entry = (SymbolEntryPtr)e; |
| set_serialized(entry); |
| return write_symbol(writer, entry, false); |
| } |
| |
| int write__symbol__leakp(JfrCheckpointWriter* writer, const void* e) { |
| assert(e != NULL, "invariant"); |
| SymbolEntryPtr entry = (SymbolEntryPtr)e; |
| return write_symbol(writer, entry, true); |
| } |
| |
| static int write_cstring(JfrCheckpointWriter* writer, CStringEntryPtr entry, bool leakp) { |
| assert(writer != NULL, "invariant"); |
| assert(entry != NULL, "invariant"); |
| writer->write(create_symbol_id(entry->id())); |
| writer->write(entry->value()); |
| return 1; |
| } |
| |
| int write__cstring(JfrCheckpointWriter* writer, const void* e) { |
| assert(e != NULL, "invariant"); |
| CStringEntryPtr entry = (CStringEntryPtr)e; |
| set_serialized(entry); |
| return write_cstring(writer, entry, false); |
| } |
| |
| int write__cstring__leakp(JfrCheckpointWriter* writer, const void* e) { |
| assert(e != NULL, "invariant"); |
| CStringEntryPtr entry = (CStringEntryPtr)e; |
| return write_cstring(writer, entry, true); |
| } |
| |
| typedef SymbolPredicate<SymbolEntryPtr, false> SymPredicate; |
| typedef JfrPredicatedTypeWriterImplHost<SymbolEntryPtr, SymPredicate, write__symbol> SymbolEntryWriterImpl; |
| typedef JfrTypeWriterHost<SymbolEntryWriterImpl, TYPE_SYMBOL> SymbolEntryWriter; |
| typedef SymbolPredicate<CStringEntryPtr, false> CStringPredicate; |
| typedef JfrPredicatedTypeWriterImplHost<CStringEntryPtr, CStringPredicate, write__cstring> CStringEntryWriterImpl; |
| typedef JfrTypeWriterHost<CStringEntryWriterImpl, TYPE_SYMBOL> CStringEntryWriter; |
| |
| typedef SymbolPredicate<SymbolEntryPtr, true> LeakSymPredicate; |
| typedef JfrPredicatedTypeWriterImplHost<SymbolEntryPtr, LeakSymPredicate, write__symbol__leakp> LeakSymbolEntryWriterImpl; |
| typedef JfrTypeWriterHost<LeakSymbolEntryWriterImpl, TYPE_SYMBOL> LeakSymbolEntryWriter; |
| typedef CompositeFunctor<SymbolEntryPtr, LeakSymbolEntryWriter, SymbolEntryWriter> CompositeSymbolWriter; |
| typedef SymbolPredicate<CStringEntryPtr, true> LeakCStringPredicate; |
| typedef JfrPredicatedTypeWriterImplHost<CStringEntryPtr, LeakCStringPredicate, write__cstring__leakp> LeakCStringEntryWriterImpl; |
| typedef JfrTypeWriterHost<LeakCStringEntryWriterImpl, TYPE_SYMBOL> LeakCStringEntryWriter; |
| typedef CompositeFunctor<CStringEntryPtr, LeakCStringEntryWriter, CStringEntryWriter> CompositeCStringWriter; |
| |
| static void write_symbols_with_leakp() { |
| assert(_leakp_writer != NULL, "invariant"); |
| SymbolEntryWriter sw(_writer, _class_unload); |
| LeakSymbolEntryWriter lsw(_leakp_writer, _class_unload); |
| CompositeSymbolWriter csw(&lsw, &sw); |
| _artifacts->iterate_symbols(csw); |
| CStringEntryWriter ccsw(_writer, _class_unload, true); // skip header |
| LeakCStringEntryWriter lccsw(_leakp_writer, _class_unload, true); // skip header |
| CompositeCStringWriter cccsw(&lccsw, &ccsw); |
| _artifacts->iterate_cstrings(cccsw); |
| sw.add(ccsw.count()); |
| lsw.add(lccsw.count()); |
| _artifacts->tally(sw); |
| } |
| |
| static void write_symbols() { |
| assert(_writer != NULL, "invariant"); |
| if (_leakp_writer != NULL) { |
| write_symbols_with_leakp(); |
| return; |
| } |
| SymbolEntryWriter sw(_writer, _class_unload); |
| _artifacts->iterate_symbols(sw); |
| CStringEntryWriter csw(_writer, _class_unload, true); // skip header |
| _artifacts->iterate_cstrings(csw); |
| sw.add(csw.count()); |
| _artifacts->tally(sw); |
| } |
| |
| static bool clear_artifacts = false; |
| |
| void JfrTypeSet::clear() { |
| clear_artifacts = true; |
| } |
| |
| typedef Wrapper<KlassPtr, ClearArtifact> ClearKlassBits; |
| typedef Wrapper<MethodPtr, ClearArtifact> ClearMethodFlag; |
| typedef MethodIteratorHost<ClearMethodFlag, ClearKlassBits, AlwaysTrue, false> ClearKlassAndMethods; |
| |
| static size_t teardown() { |
| assert(_artifacts != NULL, "invariant"); |
| const size_t total_count = _artifacts->total_count(); |
| if (previous_epoch()) { |
| assert(_writer != NULL, "invariant"); |
| ClearKlassAndMethods clear(_writer); |
| _artifacts->iterate_klasses(clear); |
| JfrTypeSet::clear(); |
| ++checkpoint_id; |
| } |
| return total_count; |
| } |
| |
| static void setup(JfrCheckpointWriter* writer, JfrCheckpointWriter* leakp_writer, bool class_unload, bool flushpoint) { |
| _writer = writer; |
| _leakp_writer = leakp_writer; |
| _class_unload = class_unload; |
| _flushpoint = flushpoint; |
| if (_artifacts == NULL) { |
| _artifacts = new JfrArtifactSet(class_unload); |
| } else { |
| _artifacts->initialize(class_unload, clear_artifacts); |
| } |
| clear_artifacts = false; |
| assert(_artifacts != NULL, "invariant"); |
| assert(!_artifacts->has_klass_entries(), "invariant"); |
| } |
| |
| /** |
| * Write all "tagged" (in-use) constant artifacts and their dependencies. |
| */ |
| size_t JfrTypeSet::serialize(JfrCheckpointWriter* writer, JfrCheckpointWriter* leakp_writer, bool class_unload, bool flushpoint) { |
| assert(writer != NULL, "invariant"); |
| ResourceMark rm; |
| setup(writer, leakp_writer, class_unload, flushpoint); |
| // write order is important because an individual write step |
| // might tag an artifact to be written in a subsequent step |
| if (!write_klasses()) { |
| return 0; |
| } |
| write_packages(); |
| write_modules(); |
| write_classloaders(); |
| write_methods(); |
| write_symbols(); |
| return teardown(); |
| } |