jdk8-mips64-public/hotspot: src/share/vm/ci/ciInstanceKlass.cpp@f9be75d21404 (annotated)

src/share/vm/ci/ciInstanceKlass.cpp@f9be75d21404 (annotated)

src/share/vm/ci/ciInstanceKlass.cpp

Tue, 14 May 2013 09:41:12 -0700

author: minqi
date: Tue, 14 May 2013 09:41:12 -0700
changeset 5103: f9be75d21404
parent 4531: fcc9e7681d63
child 5110: 6f3fd5150b67
permissions: -rw-r--r--

8012902: remove use of global operator new - take 2
Summary: The fix of 8010992, disable use of global operator new and new[] which caused failure on some tests. This takes two of the bugs also add ALLOW_OPERATOR_NEW_USAGE to prevent crash for third party code calling operator new of jvm on certain platforms.
Reviewed-by: coleenp, dholmes, zgu
Contributed-by: yumin.qi@oracle.com

 /*
  * 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.
  *
  * 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 "ci/ciField.hpp"
 #include "ci/ciInstance.hpp"
 #include "ci/ciInstanceKlass.hpp"
 #include "ci/ciUtilities.hpp"
 #include "classfile/systemDictionary.hpp"
 #include "memory/allocation.hpp"
 #include "memory/allocation.inline.hpp"
 #include "oops/oop.inline.hpp"
 #include "oops/fieldStreams.hpp"
 #include "runtime/fieldDescriptor.hpp"
 // ciInstanceKlass
 //
 // This class represents a Klass* in the HotSpot virtual machine
 // whose Klass part in an InstanceKlass.
 // ------------------------------------------------------------------
 // ciInstanceKlass::ciInstanceKlass
 //
 // Loaded instance klass.
 ciInstanceKlass::ciInstanceKlass(KlassHandle h_k) :
   ciKlass(h_k), _non_static_fields(NULL)
 {
   assert(get_Klass()->oop_is_instance(), "wrong type");
   assert(get_instanceKlass()->is_loaded(), "must be at least loaded");
   InstanceKlass* ik = get_instanceKlass();
   AccessFlags access_flags = ik->access_flags();
   _flags = ciFlags(access_flags);
   _has_finalizer = access_flags.has_finalizer();
   _has_subklass = ik->subklass() != NULL;
   _init_state = ik->init_state();
   _nonstatic_field_size = ik->nonstatic_field_size();
   _has_nonstatic_fields = ik->has_nonstatic_fields();
   _nonstatic_fields = NULL; // initialized lazily by compute_nonstatic_fields:
   _implementor = NULL; // we will fill these lazily
   Thread *thread = Thread::current();
   if (ciObjectFactory::is_initialized()) {
     _loader = JNIHandles::make_local(thread, ik->class_loader());
     _protection_domain = JNIHandles::make_local(thread,
                                                 ik->protection_domain());
     _is_shared = false;
   } else {
     Handle h_loader(thread, ik->class_loader());
     Handle h_protection_domain(thread, ik->protection_domain());
     _loader = JNIHandles::make_global(h_loader);
     _protection_domain = JNIHandles::make_global(h_protection_domain);
     _is_shared = true;
   }
   // Lazy fields get filled in only upon request.
   _super  = NULL;
   _java_mirror = NULL;
   if (is_shared()) {
     if (h_k() != SystemDictionary::Object_klass()) {
       super();
     }
     //compute_nonstatic_fields();  // done outside of constructor
   }
   _field_cache = NULL;
 }
 // Version for unloaded classes:
 ciInstanceKlass::ciInstanceKlass(ciSymbol* name,
                                  jobject loader, jobject protection_domain)
   : ciKlass(name, T_OBJECT)
 {
   assert(name->byte_at(0) != '[', "not an instance klass");
   _init_state = (InstanceKlass::ClassState)0;
   _nonstatic_field_size = -1;
   _has_nonstatic_fields = false;
   _nonstatic_fields = NULL;
   _loader = loader;
   _protection_domain = protection_domain;
   _is_shared = false;
   _super = NULL;
   _java_mirror = NULL;
   _field_cache = NULL;
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::compute_shared_is_initialized
 void ciInstanceKlass::compute_shared_init_state() {
   GUARDED_VM_ENTRY(
     InstanceKlass* ik = get_instanceKlass();
     _init_state = ik->init_state();
   )
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::compute_shared_has_subklass
 bool ciInstanceKlass::compute_shared_has_subklass() {
   GUARDED_VM_ENTRY(
     InstanceKlass* ik = get_instanceKlass();
     _has_subklass = ik->subklass() != NULL;
     return _has_subklass;
   )
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::loader
 oop ciInstanceKlass::loader() {
   ASSERT_IN_VM;
   return JNIHandles::resolve(_loader);
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::loader_handle
 jobject ciInstanceKlass::loader_handle() {
   return _loader;
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::protection_domain
 oop ciInstanceKlass::protection_domain() {
   ASSERT_IN_VM;
   return JNIHandles::resolve(_protection_domain);
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::protection_domain_handle
 jobject ciInstanceKlass::protection_domain_handle() {
   return _protection_domain;
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::field_cache
 //
 // Get the field cache associated with this klass.
 ciConstantPoolCache* ciInstanceKlass::field_cache() {
   if (is_shared()) {
     return NULL;
   }
   if (_field_cache == NULL) {
     assert(!is_java_lang_Object(), "Object has no fields");
     Arena* arena = CURRENT_ENV->arena();
     _field_cache = new (arena) ciConstantPoolCache(arena, 5);
   }
   return _field_cache;
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::get_canonical_holder
 //
 ciInstanceKlass* ciInstanceKlass::get_canonical_holder(int offset) {
   #ifdef ASSERT
   if (!(offset >= 0 && offset < layout_helper())) {
     tty->print("*** get_canonical_holder(%d) on ", offset);
     this->print();
     tty->print_cr(" ***");
   };
   assert(offset >= 0 && offset < layout_helper(), "offset must be tame");
   #endif
   if (offset < instanceOopDesc::base_offset_in_bytes()) {
     // All header offsets belong properly to java/lang/Object.
     return CURRENT_ENV->Object_klass();
   }
   ciInstanceKlass* self = this;
   for (;;) {
     assert(self->is_loaded(), "must be loaded to have size");
     ciInstanceKlass* super = self->super();
     if (super == NULL || super->nof_nonstatic_fields() == 0 ||
         !super->contains_field_offset(offset)) {
       return self;
     } else {
       self = super;  // return super->get_canonical_holder(offset)
     }
   }
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::is_java_lang_Object
 //
 // Is this klass java.lang.Object?
 bool ciInstanceKlass::is_java_lang_Object() const {
   return equals(CURRENT_ENV->Object_klass());
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::uses_default_loader
 bool ciInstanceKlass::uses_default_loader() {
   // Note:  We do not need to resolve the handle or enter the VM
   // in order to test null-ness.
   return _loader == NULL;
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::is_in_package
 //
 // Is this klass in the given package?
 bool ciInstanceKlass::is_in_package(const char* packagename, int len) {
   // To avoid class loader mischief, this test always rejects application classes.
   if (!uses_default_loader())
     return false;
   GUARDED_VM_ENTRY(
     return is_in_package_impl(packagename, len);
   )
 }
 bool ciInstanceKlass::is_in_package_impl(const char* packagename, int len) {
   ASSERT_IN_VM;
   // If packagename contains trailing '/' exclude it from the
   // prefix-test since we test for it explicitly.
   if (packagename[len - 1] == '/')
     len--;
   if (!name()->starts_with(packagename, len))
     return false;
   // Test if the class name is something like "java/lang".
   if ((len + 1) > name()->utf8_length())
     return false;
   // Test for trailing '/'
   if ((char) name()->byte_at(len) != '/')
     return false;
   // Make sure it's not actually in a subpackage:
   if (name()->index_of_at(len+1, "/", 1) >= 0)
     return false;
   return true;
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::print_impl
 //
 // Implementation of the print method.
 void ciInstanceKlass::print_impl(outputStream* st) {
   ciKlass::print_impl(st);
   GUARDED_VM_ENTRY(st->print(" loader=0x%x", (address)loader());)
   if (is_loaded()) {
     st->print(" loaded=true initialized=%s finalized=%s subklass=%s size=%d flags=",
               bool_to_str(is_initialized()),
               bool_to_str(has_finalizer()),
               bool_to_str(has_subklass()),
               layout_helper());
     _flags.print_klass_flags();
     if (_super) {
       st->print(" super=");
       _super->print_name();
     }
     if (_java_mirror) {
       st->print(" mirror=PRESENT");
     }
   } else {
     st->print(" loaded=false");
   }
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::super
 //
 // Get the superklass of this klass.
 ciInstanceKlass* ciInstanceKlass::super() {
   assert(is_loaded(), "must be loaded");
   if (_super == NULL && !is_java_lang_Object()) {
     GUARDED_VM_ENTRY(
       Klass* super_klass = get_instanceKlass()->super();
       _super = CURRENT_ENV->get_instance_klass(super_klass);
     )
   }
   return _super;
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::java_mirror
 //
 // Get the instance of java.lang.Class corresponding to this klass.
 // Cache it on this->_java_mirror.
 ciInstance* ciInstanceKlass::java_mirror() {
   if (is_shared()) {
     return ciKlass::java_mirror();
   }
   if (_java_mirror == NULL) {
     _java_mirror = ciKlass::java_mirror();
   }
   return _java_mirror;
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::unique_concrete_subklass
 ciInstanceKlass* ciInstanceKlass::unique_concrete_subklass() {
   if (!is_loaded())     return NULL; // No change if class is not loaded
   if (!is_abstract())   return NULL; // Only applies to abstract classes.
   if (!has_subklass())  return NULL; // Must have at least one subklass.
   VM_ENTRY_MARK;
   InstanceKlass* ik = get_instanceKlass();
   Klass* up = ik->up_cast_abstract();
   assert(up->oop_is_instance(), "must be InstanceKlass");
   if (ik == up) {
     return NULL;
   }
   return CURRENT_THREAD_ENV->get_instance_klass(up);
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::has_finalizable_subclass
 bool ciInstanceKlass::has_finalizable_subclass() {
   if (!is_loaded())     return true;
   VM_ENTRY_MARK;
   return Dependencies::find_finalizable_subclass(get_instanceKlass()) != NULL;
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::get_field_by_offset
 ciField* ciInstanceKlass::get_field_by_offset(int field_offset, bool is_static) {
   if (!is_static) {
     for (int i = 0, len = nof_nonstatic_fields(); i < len; i++) {
       ciField* field = _nonstatic_fields->at(i);
       int  field_off = field->offset_in_bytes();
       if (field_off == field_offset)
         return field;
       if (field_off > field_offset)
         break;
       // could do binary search or check bins, but probably not worth it
     }
     return NULL;
   }
   VM_ENTRY_MARK;
   InstanceKlass* k = get_instanceKlass();
   fieldDescriptor fd;
   if (!k->find_field_from_offset(field_offset, is_static, &fd)) {
     return NULL;
   }
   ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
   return field;
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::get_field_by_name
 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) {
   VM_ENTRY_MARK;
   InstanceKlass* k = get_instanceKlass();
   fieldDescriptor fd;
   Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd);
   if (def == NULL) {
     return NULL;
   }
   ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
   return field;
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::non_static_fields.
 class NonStaticFieldFiller: public FieldClosure {
   GrowableArray<ciField*>* _arr;
   ciEnv* _curEnv;
 public:
   NonStaticFieldFiller(ciEnv* curEnv, GrowableArray<ciField*>* arr) :
     _curEnv(curEnv), _arr(arr)
   {}
   void do_field(fieldDescriptor* fd) {
     ciField* field = new (_curEnv->arena()) ciField(fd);
     _arr->append(field);
   }
 };
 GrowableArray<ciField*>* ciInstanceKlass::non_static_fields() {
   if (_non_static_fields == NULL) {
     VM_ENTRY_MARK;
     ciEnv* curEnv = ciEnv::current();
     InstanceKlass* ik = get_instanceKlass();
     int max_n_fields = ik->java_fields_count();
     Arena* arena = curEnv->arena();
     _non_static_fields =
       new (arena) GrowableArray<ciField*>(arena, max_n_fields, 0, NULL);
     NonStaticFieldFiller filler(curEnv, _non_static_fields);
     ik->do_nonstatic_fields(&filler);
   }
   return _non_static_fields;
 }
 static int sort_field_by_offset(ciField** a, ciField** b) {
   return (*a)->offset_in_bytes() - (*b)->offset_in_bytes();
   // (no worries about 32-bit overflow...)
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::compute_nonstatic_fields
 int ciInstanceKlass::compute_nonstatic_fields() {
   assert(is_loaded(), "must be loaded");
   if (_nonstatic_fields != NULL)
     return _nonstatic_fields->length();
   if (!has_nonstatic_fields()) {
     Arena* arena = CURRENT_ENV->arena();
     _nonstatic_fields = new (arena) GrowableArray<ciField*>(arena, 0, 0, NULL);
     return 0;
   }
   assert(!is_java_lang_Object(), "bootstrap OK");
   // Size in bytes of my fields, including inherited fields.
   int fsize = nonstatic_field_size() * heapOopSize;
   ciInstanceKlass* super = this->super();
   GrowableArray<ciField*>* super_fields = NULL;
   if (super != NULL && super->has_nonstatic_fields()) {
     int super_fsize  = super->nonstatic_field_size() * heapOopSize;
     int super_flen   = super->nof_nonstatic_fields();
     super_fields = super->_nonstatic_fields;
     assert(super_flen == 0 || super_fields != NULL, "first get nof_fields");
     // See if I am no larger than my super; if so, I can use his fields.
     if (fsize == super_fsize) {
       _nonstatic_fields = super_fields;
       return super_fields->length();
     }
   }
   GrowableArray<ciField*>* fields = NULL;
   GUARDED_VM_ENTRY({
       fields = compute_nonstatic_fields_impl(super_fields);
     });
   if (fields == NULL) {
     // This can happen if this class (java.lang.Class) has invisible fields.
     _nonstatic_fields = super_fields;
     return super_fields->length();
   }
   int flen = fields->length();
   // Now sort them by offset, ascending.
   // (In principle, they could mix with superclass fields.)
   fields->sort(sort_field_by_offset);
   _nonstatic_fields = fields;
   return flen;
 }
 GrowableArray<ciField*>*
 ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>*
                                                super_fields) {
   ASSERT_IN_VM;
   Arena* arena = CURRENT_ENV->arena();
   int flen = 0;
   GrowableArray<ciField*>* fields = NULL;
   InstanceKlass* k = get_instanceKlass();
   for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
     if (fs.access_flags().is_static())  continue;
     flen += 1;
   }
   // allocate the array:
   if (flen == 0) {
     return NULL;  // return nothing if none are locally declared
   }
   if (super_fields != NULL) {
     flen += super_fields->length();
   }
   fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, NULL);
   if (super_fields != NULL) {
     fields->appendAll(super_fields);
   }
   for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
     if (fs.access_flags().is_static())  continue;
     fieldDescriptor fd;
     fd.initialize(k, fs.index());
     ciField* field = new (arena) ciField(&fd);
     fields->append(field);
   }
   assert(fields->length() == flen, "sanity");
   return fields;
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::find_method
 //
 // Find a method in this klass.
 ciMethod* ciInstanceKlass::find_method(ciSymbol* name, ciSymbol* signature) {
   VM_ENTRY_MARK;
   InstanceKlass* k = get_instanceKlass();
   Symbol* name_sym = name->get_symbol();
   Symbol* sig_sym= signature->get_symbol();
   Method* m = k->find_method(name_sym, sig_sym);
   if (m == NULL)  return NULL;
   return CURRENT_THREAD_ENV->get_method(m);
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::is_leaf_type
 bool ciInstanceKlass::is_leaf_type() {
   assert(is_loaded(), "must be loaded");
   if (is_shared()) {
     return is_final();  // approximately correct
   } else {
     return !_has_subklass && (nof_implementors() == 0);
   }
 }
 // ------------------------------------------------------------------
 // ciInstanceKlass::implementor
 //
 // Report an implementor of this interface.
 // Note that there are various races here, since my copy
 // of _nof_implementors might be out of date with respect
 // to results returned by InstanceKlass::implementor.
 // This is OK, since any dependencies we decide to assert
 // will be checked later under the Compile_lock.
 ciInstanceKlass* ciInstanceKlass::implementor() {
   ciInstanceKlass* impl = _implementor;
   if (impl == NULL) {
     // Go into the VM to fetch the implementor.
     {
       VM_ENTRY_MARK;
       Klass* k = get_instanceKlass()->implementor();
       if (k != NULL) {
         if (k == get_instanceKlass()) {
           // More than one implementors. Use 'this' in this case.
           impl = this;
         } else {
           impl = CURRENT_THREAD_ENV->get_instance_klass(k);
         }
       }
     }
     // Memoize this result.
     if (!is_shared()) {
       _implementor = impl;
     }
   }
   return impl;
 }
 // Utility class for printing of the contents of the static fields for
 // use by compilation replay.  It only prints out the information that
 // could be consumed by the compiler, so for primitive types it prints
 // out the actual value.  For Strings it's the actual string value.
 // For array types it it's first level array size since that's the
 // only value which statically unchangeable.  For all other reference
 // types it simply prints out the dynamic type.
 class StaticFinalFieldPrinter : public FieldClosure {
   outputStream* _out;
   const char*   _holder;
  public:
   StaticFinalFieldPrinter(outputStream* out, const char* holder) :
     _out(out),
     _holder(holder) {
   }
   void do_field(fieldDescriptor* fd) {
     if (fd->is_final() && !fd->has_initial_value()) {
       ResourceMark rm;
       oop mirror = fd->field_holder()->java_mirror();
       _out->print("staticfield %s %s %s ", _holder, fd->name()->as_quoted_ascii(), fd->signature()->as_quoted_ascii());
       switch (fd->field_type()) {
         case T_BYTE:    _out->print_cr("%d", mirror->byte_field(fd->offset()));   break;
         case T_BOOLEAN: _out->print_cr("%d", mirror->bool_field(fd->offset()));   break;
         case T_SHORT:   _out->print_cr("%d", mirror->short_field(fd->offset()));  break;
         case T_CHAR:    _out->print_cr("%d", mirror->char_field(fd->offset()));   break;
         case T_INT:     _out->print_cr("%d", mirror->int_field(fd->offset()));    break;
         case T_LONG:    _out->print_cr(INT64_FORMAT, mirror->long_field(fd->offset()));   break;
         case T_FLOAT: {
           float f = mirror->float_field(fd->offset());
           _out->print_cr("%d", *(int*)&f);
           break;
         }
         case T_DOUBLE: {
           double d = mirror->double_field(fd->offset());
           _out->print_cr(INT64_FORMAT, *(jlong*)&d);
           break;
         }
         case T_ARRAY: {
           oop value =  mirror->obj_field_acquire(fd->offset());
           if (value == NULL) {
             _out->print_cr("null");
           } else {
             typeArrayOop ta = (typeArrayOop)value;
             _out->print("%d", ta->length());
             if (value->is_objArray()) {
               objArrayOop oa = (objArrayOop)value;
               const char* klass_name  = value->klass()->name()->as_quoted_ascii();
               _out->print(" %s", klass_name);
             }
             _out->cr();
           }
           break;
         }
         case T_OBJECT: {
           oop value =  mirror->obj_field_acquire(fd->offset());
           if (value == NULL) {
             _out->print_cr("null");
           } else if (value->is_instance()) {
             if (value->is_a(SystemDictionary::String_klass())) {
               _out->print("\"");
               _out->print_raw(java_lang_String::as_quoted_ascii(value));
               _out->print_cr("\"");
             } else {
               const char* klass_name  = value->klass()->name()->as_quoted_ascii();
               _out->print_cr(klass_name);
             }
           } else {
             ShouldNotReachHere();
           }
           break;
         }
         default:
           ShouldNotReachHere();
         }
     }
   }
 };
 void ciInstanceKlass::dump_replay_data(outputStream* out) {
   ASSERT_IN_VM;
   ResourceMark rm;
   InstanceKlass* ik = get_instanceKlass();
   ConstantPool*  cp = ik->constants();
   // Try to record related loaded classes
   Klass* sub = ik->subklass();
   while (sub != NULL) {
     if (sub->oop_is_instance()) {
       out->print_cr("instanceKlass %s", sub->name()->as_quoted_ascii());
     }
     sub = sub->next_sibling();
   }
   // Dump out the state of the constant pool tags.  During replay the
   // tags will be validated for things which shouldn't change and
   // classes will be resolved if the tags indicate that they were
   // resolved at compile time.
   out->print("ciInstanceKlass %s %d %d %d", ik->name()->as_quoted_ascii(),
              is_linked(), is_initialized(), cp->length());
   for (int index = 1; index < cp->length(); index++) {
     out->print(" %d", cp->tags()->at(index));
   }
   out->cr();
   if (is_initialized()) {
     //  Dump out the static final fields in case the compilation relies
     //  on their value for correct replay.
     StaticFinalFieldPrinter sffp(out, ik->name()->as_quoted_ascii());
     ik->do_local_static_fields(&sffp);
   }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/ci/ciInstanceKlass.cpp@f9be75d21404 (annotated)

src/share/vm/ci/ciInstanceKlass.cpp