truffle: src/share/vm/ci/ciEnv.cpp comparison

comparison src/share/vm/ci/ciEnv.cpp @ 6725:da91efe96a93

6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>

author	coleenp
date	Sat, 01 Sep 2012 13:25:18 -0400
parents	7f813940ac35
children	137868b7aa6f

comparison

equal deleted inserted replaced

-:36d1d483d5d6
+:da91efe96a93
 /*
-* Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
+* Copyright (c) 1999, 2012, 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.
 #include "ci/ciConstant.hpp"
 #include "ci/ciEnv.hpp"
 #include "ci/ciField.hpp"
 #include "ci/ciInstance.hpp"
 #include "ci/ciInstanceKlass.hpp"
-#include "ci/ciInstanceKlassKlass.hpp"
 #include "ci/ciMethod.hpp"
 #include "ci/ciNullObject.hpp"
-#include "ci/ciObjArrayKlassKlass.hpp"
-#include "ci/ciTypeArrayKlassKlass.hpp"
 #include "ci/ciUtilities.hpp"
 #include "classfile/systemDictionary.hpp"
 #include "classfile/vmSymbols.hpp"
 #include "code/scopeDesc.hpp"
 #include "compiler/compileBroker.hpp"
 #include "gc_interface/collectedHeap.inline.hpp"
 #include "interpreter/linkResolver.hpp"
 #include "memory/allocation.inline.hpp"
 #include "memory/oopFactory.hpp"
 #include "memory/universe.inline.hpp"
-#include "oops/methodDataOop.hpp"
+#include "oops/methodData.hpp"
 #include "oops/objArrayKlass.hpp"
 #include "oops/oop.inline.hpp"
 #include "oops/oop.inline2.hpp"
 #include "prims/jvmtiExport.hpp"
 #include "runtime/init.hpp"
 //
 // This class is the top level broker for requests from the compiler
 // to the VM.
 ciObject*              ciEnv::_null_object_instance;
-ciMethodKlass*         ciEnv::_method_klass_instance;
-ciKlassKlass*          ciEnv::_klass_klass_instance;
-ciInstanceKlassKlass*  ciEnv::_instance_klass_klass_instance;
-ciTypeArrayKlassKlass* ciEnv::_type_array_klass_klass_instance;
-ciObjArrayKlassKlass*  ciEnv::_obj_array_klass_klass_instance;
 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL;
 WK_KLASSES_DO(WK_KLASS_DEFN)
 #undef WK_KLASS_DEFN
 // Assertions ensure that these instances are not accessed before
 // their initialization.
 assert(Universe::is_fully_initialized(), "must be");
-oop o = Universe::null_ptr_exception_instance();
+_NullPointerException_instance = NULL;
-assert(o != NULL, "should have been initialized");
+_ArithmeticException_instance = NULL;
-_NullPointerException_instance = get_object(o)->as_instance();
-o = Universe::arithmetic_exception_instance();
-assert(o != NULL, "should have been initialized");
-_ArithmeticException_instance = get_object(o)->as_instance();
 _ArrayIndexOutOfBoundsException_instance = NULL;
 _ArrayStoreException_instance = NULL;
 _ClassCastException_instance = NULL;
 _the_null_string = NULL;
 _the_min_jint_string = NULL;
 }
 ciEnv::~ciEnv() {
 CompilerThread* current_thread = CompilerThread::current();
 _factory->remove_symbols();
-current_thread->set_env(NULL);
+// Need safepoint to clear the env on the thread.  RedefineClasses might
+// be reading it.
+GUARDED_VM_ENTRY(current_thread->set_env(NULL);)
 }
 // ------------------------------------------------------------------
 // Cache Jvmti state
 void ciEnv::cache_jvmti_state() {
 // helper for lazy exception creation
 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) {
 VM_ENTRY_MARK;
 if (handle == NULL) {
 // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance.
-klassOop k = SystemDictionary::find(name, Handle(), Handle(), THREAD);
+Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD);
 jobject objh = NULL;
 if (!HAS_PENDING_EXCEPTION && k != NULL) {
-oop obj = instanceKlass::cast(k)->allocate_permanent_instance(THREAD);
+oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD);
 if (!HAS_PENDING_EXCEPTION)
 objh = JNIHandles::make_global(obj);
 }
 if (HAS_PENDING_EXCEPTION) {
 CLEAR_PENDING_EXCEPTION;
 }
 oop obj = JNIHandles::resolve(handle);
 return obj == NULL? NULL: get_object(obj)->as_instance();
 }
-// ------------------------------------------------------------------
-// ciEnv::ArrayIndexOutOfBoundsException_instance, etc.
 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() {
 if (_ArrayIndexOutOfBoundsException_instance == NULL) {
 _ArrayIndexOutOfBoundsException_instance
 = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle,
 vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
 return _the_min_jint_string;
 }
 // ------------------------------------------------------------------
 // ciEnv::get_method_from_handle
-ciMethod* ciEnv::get_method_from_handle(jobject method) {
+ciMethod* ciEnv::get_method_from_handle(Method* method) {
 VM_ENTRY_MARK;
-return get_object(JNIHandles::resolve(method))->as_method();
+return get_metadata(method)->as_method();
 }
-// ------------------------------------------------------------------
-// ciEnv::make_array
-ciArray* ciEnv::make_system_array(GrowableArray<ciObject*>* objects) {
-VM_ENTRY_MARK;
-int length = objects->length();
-objArrayOop a = oopFactory::new_system_objArray(length, THREAD);
-if (HAS_PENDING_EXCEPTION) {
-CLEAR_PENDING_EXCEPTION;
-record_out_of_memory_failure();
-return NULL;
-}
-for (int i = 0; i < length; i++) {
-a->obj_at_put(i, objects->at(i)->get_oop());
-}
-assert(a->is_perm(), "");
-return get_object(a)->as_array();
-}
 // ------------------------------------------------------------------
 // ciEnv::array_element_offset_in_bytes
 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) {
 VM_ENTRY_MARK;
 // ------------------------------------------------------------------
 // ciEnv::check_klass_accessiblity
 //
 // Note: the logic of this method should mirror the logic of
-// constantPoolOopDesc::verify_constant_pool_resolve.
+// ConstantPool::verify_constant_pool_resolve.
 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
-klassOop resolved_klass) {
+Klass* resolved_klass) {
 if (accessing_klass == NULL || !accessing_klass->is_loaded()) {
 return true;
 }
-if (accessing_klass->is_obj_array()) {
+if (accessing_klass->is_obj_array_klass()) {
 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
 }
 if (!accessing_klass->is_instance_klass()) {
 return true;
 }
-if (resolved_klass->klass_part()->oop_is_objArray()) {
+if (resolved_klass->oop_is_objArray()) {
 // Find the element klass, if this is an array.
 resolved_klass = objArrayKlass::cast(resolved_klass)->bottom_klass();
 }
-if (resolved_klass->klass_part()->oop_is_instance()) {
+if (resolved_klass->oop_is_instance()) {
-return Reflection::verify_class_access(accessing_klass->get_klassOop(),
+return Reflection::verify_class_access(accessing_klass->get_Klass(),
 resolved_klass,
 true);
 }
 return true;
 }
 }
 KlassHandle found_klass;
 {
 ttyUnlocker ttyul;  // release tty lock to avoid ordering problems
 MutexLocker ml(Compile_lock);
-klassOop kls;
+Klass* kls;
 if (!require_local) {
 kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader,
 KILL_COMPILE_ON_FATAL_(fail_type));
 } else {
 kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain,
 if (found_klass() == NULL && !cpool.is_null() && cpool->has_preresolution()) {
 // Look inside the constant pool for pre-resolved class entries.
 for (int i = cpool->length() - 1; i >= 1; i--) {
 if (cpool->tag_at(i).is_klass()) {
-klassOop kls = cpool->resolved_klass_at(i);
+Klass* kls = cpool->resolved_klass_at(i);
 if (Klass::cast(kls)->name() == sym) {
 found_klass = KlassHandle(THREAD, kls);
 break;
 }
 }
 }
 }
 if (found_klass() != NULL) {
 // Found it.  Build a CI handle.
-return get_object(found_klass())->as_klass();
+return get_klass(found_klass());
 }
 if (require_local)  return NULL;
 // Not yet loaded into the VM, or not governed by loader constraints.
 ciKlass* ciEnv::get_klass_by_index_impl(constantPoolHandle cpool,
 int index,
 bool& is_accessible,
 ciInstanceKlass* accessor) {
 EXCEPTION_CONTEXT;
-KlassHandle klass(THREAD, constantPoolOopDesc::klass_at_if_loaded(cpool, index));
+KlassHandle klass; // = NULL;
 Symbol* klass_name = NULL;
+if (cpool->tag_at(index).is_symbol()) {
+klass_name = cpool->symbol_at(index);
+} else {
+// Check if it's resolved if it's not a symbol constant pool entry.
+klass = KlassHandle(THREAD, ConstantPool::klass_at_if_loaded(cpool, index));
 if (klass.is_null()) {
 // The klass has not been inserted into the constant pool.
 // Try to look it up by name.
 {
 // We have to lock the cpool to keep the oop from being resolved
 // while we are accessing it.
-ObjectLocker ol(cpool, THREAD);
+MonitorLockerEx ml(cpool->lock());
 constantTag tag = cpool->tag_at(index);
 if (tag.is_klass()) {
 // The klass has been inserted into the constant pool
 // very recently.
 klass = KlassHandle(THREAD, cpool->resolved_klass_at(index));
-} else if (tag.is_symbol()) {
-klass_name = cpool->symbol_at(index);
 } else {
 assert(cpool->tag_at(index).is_unresolved_klass(), "wrong tag");
 klass_name = cpool->unresolved_klass_at(index);
 }
 }
+}
 }
 if (klass.is_null()) {
 // Not found in constant pool.  Use the name to do the lookup.
 ciKlass* k = get_klass_by_name_impl(accessor,
 get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) {
 // Loaded only remotely.  Not linked yet.
 is_accessible = false;
 } else {
 // Linked locally, and we must also check public/private, etc.
-is_accessible = check_klass_accessibility(accessor, k->get_klassOop());
+is_accessible = check_klass_accessibility(accessor, k->get_Klass());
 }
 return k;
 }
 // Check for prior unloaded klass.  The SystemDictionary's answers
 // can vary over time but the compiler needs consistency.
-ciSymbol* name = get_symbol(klass()->klass_part()->name());
+ciSymbol* name = get_symbol(klass()->name());
 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
 if (unloaded_klass != NULL) {
 is_accessible = false;
 return unloaded_klass;
 }
 // It is known to be accessible, since it was found in the constant pool.
 is_accessible = true;
-return get_object(klass())->as_klass();
+return get_klass(klass());
 }
 // ------------------------------------------------------------------
 // ciEnv::get_klass_by_index
 //
 bool ignore_will_link;
 EXCEPTION_CONTEXT;
 int index = pool_index;
 if (cache_index >= 0) {
 assert(index < 0, "only one kind of index at a time");
-ConstantPoolCacheEntry* cpc_entry = cpool->cache()->entry_at(cache_index);
+oop obj = cpool->resolved_references()->obj_at(cache_index);
-index = cpc_entry->constant_pool_index();
-oop obj = cpc_entry->f1_as_instance();
 if (obj != NULL) {
-assert(obj->is_instance() || obj->is_array(), "must be a Java reference");
 ciObject* ciobj = get_object(obj);
 return ciConstant(T_OBJECT, ciobj);
 }
+index = cpool->object_to_cp_index(cache_index);
 }
 constantTag tag = cpool->tag_at(index);
 if (tag.is_int()) {
 return ciConstant(T_INT, (jint)cpool->int_at(index));
 } else if (tag.is_long()) {
 return ciConstant((jlong)cpool->long_at(index));
 } else if (tag.is_float()) {
 return ciConstant((jfloat)cpool->float_at(index));
 } else if (tag.is_double()) {
 return ciConstant((jdouble)cpool->double_at(index));
-} else if (tag.is_string() || tag.is_unresolved_string()) {
+} else if (tag.is_string()) {
 oop string = NULL;
+assert(cache_index >= 0, "should have a cache index");
 if (cpool->is_pseudo_string_at(index)) {
-string = cpool->pseudo_string_at(index);
+string = cpool->pseudo_string_at(index, cache_index);
 } else {
-string = cpool->string_at(index, THREAD);
+string = cpool->string_at(index, cache_index, THREAD);
 if (HAS_PENDING_EXCEPTION) {
 CLEAR_PENDING_EXCEPTION;
 record_out_of_memory_failure();
 return ciConstant();
 }
 assert (klass->is_instance_klass() || klass->is_array_klass(),
 "must be an instance or array klass ");
 return ciConstant(T_OBJECT, klass->java_mirror());
 } else if (tag.is_object()) {
 oop obj = cpool->object_at(index);
-assert(obj->is_instance() || obj->is_array(), "must be a Java reference");
 ciObject* ciobj = get_object(obj);
 return ciConstant(T_OBJECT, ciobj);
 } else if (tag.is_method_type()) {
 // must execute Java code to link this CP entry into cache[i].f1
 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
 // ------------------------------------------------------------------
 // ciEnv::lookup_method
 //
 // Perform an appropriate method lookup based on accessor, holder,
 // name, signature, and bytecode.
-methodOop ciEnv::lookup_method(instanceKlass*  accessor,
+Method* ciEnv::lookup_method(InstanceKlass*  accessor,
-instanceKlass*  holder,
+InstanceKlass*  holder,
 Symbol*       name,
 Symbol*       sig,
 Bytecodes::Code bc) {
 EXCEPTION_CONTEXT;
 KlassHandle h_accessor(THREAD, accessor);
 // ciEnv::get_method_by_index_impl
 ciMethod* ciEnv::get_method_by_index_impl(constantPoolHandle cpool,
 int index, Bytecodes::Code bc,
 ciInstanceKlass* accessor) {
 if (bc == Bytecodes::_invokedynamic) {
-ConstantPoolCacheEntry* secondary_entry = cpool->cache()->secondary_entry_at(index);
+ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index);
-const bool is_resolved = !secondary_entry->is_f1_null();
+bool is_resolved = !cpce->is_f1_null();
 // FIXME: code generation could allow for null (unlinked) call site
 // The call site could be made patchable as follows:
 // Load the appendix argument from the constant pool.
 // Test the appendix argument and jump to a known deopt routine if it is null.
 // Jump through a patchable call site, which is initially a deopt routine.
 // Patch the call site to the nmethod entry point of the static compiled lambda form.
 // As with other two-component call sites, both values must be independently verified.
 if (is_resolved) {
-// Get the invoker methodOop and the extra argument from the constant pool.
+// Get the invoker Method* from the constant pool.
-methodOop adapter = secondary_entry->f2_as_vfinal_method();
+// (The appendix argument, if any, will be noted in the method's signature.)
-return get_object(adapter)->as_method();
+Method* adapter = cpce->f1_as_method();
+return get_method(adapter);
 }
 // Fake a method that is equivalent to a declared method.
-ciInstanceKlass* holder    = get_object(SystemDictionary::MethodHandle_klass())->as_instance_klass();
+ciInstanceKlass* holder    = get_instance_klass(SystemDictionary::MethodHandle_klass());
 ciSymbol*        name      = ciSymbol::invokeBasic_name();
 ciSymbol*        signature = get_symbol(cpool->signature_ref_at(index));
 return get_unloaded_method(holder, name, signature, accessor);
 } else {
 const int holder_index = cpool->klass_ref_index_at(index);
 Symbol* name_sym = cpool->name_ref_at(index);
 Symbol* sig_sym  = cpool->signature_ref_at(index);
 if (cpool->has_preresolution()
 || (holder == ciEnv::MethodHandle_klass() &&
-MethodHandles::is_signature_polymorphic_name(holder->get_klassOop(), name_sym))) {
+MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) {
 // Short-circuit lookups for JSR 292-related call sites.
 // That is, do not rely only on name-based lookups, because they may fail
 // if the names are not resolvable in the boot class loader (7056328).
 switch (bc) {
 case Bytecodes::_invokevirtual:
 case Bytecodes::_invokeinterface:
 case Bytecodes::_invokespecial:
 case Bytecodes::_invokestatic:
 {
-methodOop m = constantPoolOopDesc::method_at_if_loaded(cpool, index);
+Method* m = ConstantPool::method_at_if_loaded(cpool, index);
 if (m != NULL) {
-return get_object(m)->as_method();
+return get_method(m);
 }
 }
 break;
 }
 }
 if (holder_is_accessible) {  // Our declared holder is loaded.
-instanceKlass* lookup = declared_holder->get_instanceKlass();
+InstanceKlass* lookup = declared_holder->get_instanceKlass();
-methodOop m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc);
+Method* m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc);
 if (m != NULL &&
 (bc == Bytecodes::_invokestatic
-?  instanceKlass::cast(m->method_holder())->is_not_initialized()
+?  InstanceKlass::cast(m->method_holder())->is_not_initialized()
-: !instanceKlass::cast(m->method_holder())->is_loaded())) {
+: !InstanceKlass::cast(m->method_holder())->is_loaded())) {
 m = NULL;
 }
 if (m != NULL) {
 // We found the method.
-return get_object(m)->as_method();
+return get_method(m);
 }
 }
 // Either the declared holder was not loaded, or the method could
 // not be found.  Create a dummy ciMethod to represent the failed
 // First, check non-klass dependencies as we might return early and
 // not check klass dependencies if the system dictionary
 // modification counter hasn't changed (see below).
 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
 if (deps.is_klass_type())  continue;  // skip klass dependencies
-klassOop witness = deps.check_dependency();
+Klass* witness = deps.check_dependency();
 if (witness != NULL) {
 record_failure("invalid non-klass dependency");
 return;
 }
 }
 if (!counter_changed && !verify_deps)  return;
 int klass_violations = 0;
 for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
 if (!deps.is_klass_type())  continue;  // skip non-klass dependencies
-klassOop witness = deps.check_dependency();
+Klass* witness = deps.check_dependency();
 if (witness != NULL) {
 klass_violations++;
 if (!counter_changed) {
 // Dependence failed but counter didn't change.  Log a message
 // describing what failed and allow the assert at the end to
 // Check for {class loads, evolution, breakpoints, ...} during compilation
 validate_compile_task_dependencies(target);
 }
-methodHandle method(THREAD, target->get_methodOop());
+methodHandle method(THREAD, target->get_Method());
 if (failing()) {
 // While not a true deoptimization, it is a preemptive decompile.
-methodDataOop mdo = method()->method_data();
+MethodData* mdo = method()->method_data();
 if (mdo != NULL) {
 mdo->inc_decompile_count();
 }
 // All buffers in the CodeBuffer are allocated in the CodeCache.
 tty->print_cr("Installing osr method (%d) %s @ %d",
 comp_level,
 method_name,
 entry_bci);
 }
-instanceKlass::cast(method->method_holder())->add_osr_nmethod(nm);
+InstanceKlass::cast(method->method_holder())->add_osr_nmethod(nm);
 }
 }
 }
 // JVMTI -- compiled method notification (must be done outside lock)

Mercurial > hg > truffle

comparison src/share/vm/ci/ciEnv.cpp @ 6725:da91efe96a93