--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/classfile/javaClasses.hpp Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,904 @@
+/*
+ * Copyright 1997-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+// Interface for manipulating the basic Java classes.
+//
+// All dependencies on layout of actual Java classes should be kept here.
+// If the layout of any of the classes above changes the offsets must be adjusted.
+//
+// For most classes we hardwire the offsets for performance reasons. In certain
+// cases (e.g. java.security.AccessControlContext) we compute the offsets at
+// startup since the layout here differs between JDK1.2 and JDK1.3.
+//
+// Note that fields (static and non-static) are arranged with oops before non-oops
+// on a per class basis. The offsets below have to reflect this ordering.
+//
+// When editing the layouts please update the check_offset verification code
+// correspondingly. The names in the enums must be identical to the actual field
+// names in order for the verification code to work.
+
+
+// Interface to java.lang.String objects
+
+class java_lang_String : AllStatic {
+ private:
+ enum {
+ hc_value_offset = 0,
+ hc_offset_offset = 1,
+ hc_count_offset = 2,
+ hc_hash_offset = 3
+ };
+
+ static int value_offset;
+ static int offset_offset;
+ static int count_offset;
+ static int hash_offset;
+
+ static Handle basic_create(int length, bool tenured, TRAPS);
+ static Handle basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS);
+
+ static void set_value( oop string, typeArrayOop buffer) { string->obj_field_put(value_offset, (oop)buffer); }
+ static void set_offset(oop string, int offset) { string->int_field_put(offset_offset, offset); }
+ static void set_count( oop string, int count) { string->int_field_put(count_offset, count); }
+
+ public:
+ // Instance creation
+ static Handle create_from_unicode(jchar* unicode, int len, TRAPS);
+ static Handle create_tenured_from_unicode(jchar* unicode, int len, TRAPS);
+ static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS);
+ static Handle create_from_str(const char* utf8_str, TRAPS);
+ static oop create_oop_from_str(const char* utf8_str, TRAPS);
+ static Handle create_from_symbol(symbolHandle symbol, TRAPS);
+ static Handle create_from_platform_dependent_str(const char* str, TRAPS);
+ static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
+
+ static int value_offset_in_bytes() { return value_offset; }
+ static int count_offset_in_bytes() { return count_offset; }
+ static int offset_offset_in_bytes() { return offset_offset; }
+ static int hash_offset_in_bytes() { return hash_offset; }
+
+ // Accessors
+ static typeArrayOop value(oop java_string) {
+ assert(is_instance(java_string), "must be java_string");
+ return (typeArrayOop) java_string->obj_field(value_offset);
+ }
+ static int offset(oop java_string) {
+ assert(is_instance(java_string), "must be java_string");
+ return java_string->int_field(offset_offset);
+ }
+ static int length(oop java_string) {
+ assert(is_instance(java_string), "must be java_string");
+ return java_string->int_field(count_offset);
+ }
+ static int utf8_length(oop java_string);
+
+ // String converters
+ static char* as_utf8_string(oop java_string);
+ static char* as_utf8_string(oop java_string, int start, int len);
+ static jchar* as_unicode_string(oop java_string, int& length);
+
+ static bool equals(oop java_string, jchar* chars, int len);
+
+ // Conversion between '.' and '/' formats
+ static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
+ static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
+
+ // Conversion
+ static symbolHandle as_symbol(Handle java_string, TRAPS);
+
+ // Testers
+ static bool is_instance(oop obj) {
+ return obj != NULL && obj->klass() == SystemDictionary::string_klass();
+ }
+
+ // Debugging
+ static void print(Handle java_string, outputStream* st);
+ friend class JavaClasses;
+};
+
+
+// Interface to java.lang.Class objects
+
+class java_lang_Class : AllStatic {
+ friend class VMStructs;
+ private:
+ // The fake offsets are added by the class loader when java.lang.Class is loaded
+
+ enum {
+ hc_klass_offset = 0,
+ hc_array_klass_offset = 1,
+ hc_resolved_constructor_offset = 2,
+ hc_number_of_fake_oop_fields = 3
+ };
+
+ static int klass_offset;
+ static int resolved_constructor_offset;
+ static int array_klass_offset;
+ static int number_of_fake_oop_fields;
+
+ static void compute_offsets();
+ static bool offsets_computed;
+ static int classRedefinedCount_offset;
+
+ public:
+ // Instance creation
+ static oop create_mirror(KlassHandle k, TRAPS);
+ static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
+ // Conversion
+ static klassOop as_klassOop(oop java_class);
+ // Testing
+ static bool is_primitive(oop java_class);
+ static BasicType primitive_type(oop java_class);
+ static oop primitive_mirror(BasicType t);
+ // JVM_NewInstance support
+ static methodOop resolved_constructor(oop java_class);
+ static void set_resolved_constructor(oop java_class, methodOop constructor);
+ // JVM_NewArray support
+ static klassOop array_klass(oop java_class);
+ static void set_array_klass(oop java_class, klassOop klass);
+ // compiler support for class operations
+ static int klass_offset_in_bytes() { return klass_offset; }
+ static int resolved_constructor_offset_in_bytes() { return resolved_constructor_offset; }
+ static int array_klass_offset_in_bytes() { return array_klass_offset; }
+ // Support for classRedefinedCount field
+ static int classRedefinedCount(oop the_class_mirror);
+ static void set_classRedefinedCount(oop the_class_mirror, int value);
+ // Debugging
+ friend class JavaClasses;
+ friend class instanceKlass; // verification code accesses offsets
+ friend class ClassFileParser; // access to number_of_fake_fields
+};
+
+// Interface to java.lang.Thread objects
+
+class java_lang_Thread : AllStatic {
+ private:
+ // Note that for this class the layout changed between JDK1.2 and JDK1.3,
+ // so we compute the offsets at startup rather than hard-wiring them.
+ static int _name_offset;
+ static int _group_offset;
+ static int _contextClassLoader_offset;
+ static int _inheritedAccessControlContext_offset;
+ static int _priority_offset;
+ static int _eetop_offset;
+ static int _daemon_offset;
+ static int _stillborn_offset;
+ static int _stackSize_offset;
+ static int _tid_offset;
+ static int _thread_status_offset;
+ static int _park_blocker_offset;
+ static int _park_event_offset ;
+
+ static void compute_offsets();
+
+ public:
+ // Instance creation
+ static oop create();
+ // Returns the JavaThread associated with the thread obj
+ static JavaThread* thread(oop java_thread);
+ // Set JavaThread for instance
+ static void set_thread(oop java_thread, JavaThread* thread);
+ // Name
+ static typeArrayOop name(oop java_thread);
+ static void set_name(oop java_thread, typeArrayOop name);
+ // Priority
+ static ThreadPriority priority(oop java_thread);
+ static void set_priority(oop java_thread, ThreadPriority priority);
+ // Thread group
+ static oop threadGroup(oop java_thread);
+ // Stillborn
+ static bool is_stillborn(oop java_thread);
+ static void set_stillborn(oop java_thread);
+ // Alive (NOTE: this is not really a field, but provides the correct
+ // definition without doing a Java call)
+ static bool is_alive(oop java_thread);
+ // Daemon
+ static bool is_daemon(oop java_thread);
+ static void set_daemon(oop java_thread);
+ // Context ClassLoader
+ static oop context_class_loader(oop java_thread);
+ // Control context
+ static oop inherited_access_control_context(oop java_thread);
+ // Stack size hint
+ static jlong stackSize(oop java_thread);
+ // Thread ID
+ static jlong thread_id(oop java_thread);
+
+ // Blocker object responsible for thread parking
+ static oop park_blocker(oop java_thread);
+
+ // Pointer to type-stable park handler, encoded as jlong.
+ // Should be set when apparently null
+ // For details, see unsafe.cpp Unsafe_Unpark
+ static jlong park_event(oop java_thread);
+ static bool set_park_event(oop java_thread, jlong ptr);
+
+ // Java Thread Status for JVMTI and M&M use.
+ // This thread status info is saved in threadStatus field of
+ // java.lang.Thread java class.
+ enum ThreadStatus {
+ NEW = 0,
+ RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
+ JVMTI_THREAD_STATE_RUNNABLE,
+ SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
+ JVMTI_THREAD_STATE_WAITING +
+ JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
+ JVMTI_THREAD_STATE_SLEEPING,
+ IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
+ JVMTI_THREAD_STATE_WAITING +
+ JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
+ JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
+ IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
+ JVMTI_THREAD_STATE_WAITING +
+ JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
+ JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
+ PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
+ JVMTI_THREAD_STATE_WAITING +
+ JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
+ JVMTI_THREAD_STATE_PARKED,
+ PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
+ JVMTI_THREAD_STATE_WAITING +
+ JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
+ JVMTI_THREAD_STATE_PARKED,
+ BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
+ JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
+ TERMINATED = JVMTI_THREAD_STATE_TERMINATED
+ };
+ // Write thread status info to threadStatus field of java.lang.Thread.
+ static void set_thread_status(oop java_thread_oop, ThreadStatus status);
+ // Read thread status info from threadStatus field of java.lang.Thread.
+ static ThreadStatus get_thread_status(oop java_thread_oop);
+
+ static const char* thread_status_name(oop java_thread_oop);
+
+ // Debugging
+ friend class JavaClasses;
+};
+
+// Interface to java.lang.ThreadGroup objects
+
+class java_lang_ThreadGroup : AllStatic {
+ private:
+ static int _parent_offset;
+ static int _name_offset;
+ static int _threads_offset;
+ static int _groups_offset;
+ static int _maxPriority_offset;
+ static int _destroyed_offset;
+ static int _daemon_offset;
+ static int _vmAllowSuspension_offset;
+ static int _nthreads_offset;
+ static int _ngroups_offset;
+
+ static void compute_offsets();
+
+ public:
+ // parent ThreadGroup
+ static oop parent(oop java_thread_group);
+ // name
+ static typeArrayOop name(oop java_thread_group);
+ // ("name as oop" accessor is not necessary)
+ // Number of threads in group
+ static int nthreads(oop java_thread_group);
+ // threads
+ static objArrayOop threads(oop java_thread_group);
+ // Number of threads in group
+ static int ngroups(oop java_thread_group);
+ // groups
+ static objArrayOop groups(oop java_thread_group);
+ // maxPriority in group
+ static ThreadPriority maxPriority(oop java_thread_group);
+ // Destroyed
+ static bool is_destroyed(oop java_thread_group);
+ // Daemon
+ static bool is_daemon(oop java_thread_group);
+ // vmAllowSuspension
+ static bool is_vmAllowSuspension(oop java_thread_group);
+ // Debugging
+ friend class JavaClasses;
+};
+
+
+
+// Interface to java.lang.Throwable objects
+
+class java_lang_Throwable: AllStatic {
+ friend class BacktraceBuilder;
+
+ private:
+ // Offsets
+ enum {
+ hc_backtrace_offset = 0,
+ hc_detailMessage_offset = 1,
+ hc_cause_offset = 2, // New since 1.4
+ hc_stackTrace_offset = 3 // New since 1.4
+ };
+ // Trace constants
+ enum {
+ trace_methods_offset = 0,
+ trace_bcis_offset = 1,
+ trace_next_offset = 2,
+ trace_size = 3,
+ trace_chunk_size = 32
+ };
+
+ static int backtrace_offset;
+ static int detailMessage_offset;
+ static int cause_offset;
+ static int stackTrace_offset;
+
+ // Printing
+ static char* print_stack_element_to_buffer(methodOop method, int bci);
+ static void print_to_stream(Handle stream, const char* str);
+ // StackTrace (programmatic access, new since 1.4)
+ static void clear_stacktrace(oop throwable);
+ // No stack trace available
+ static const char* no_stack_trace_message();
+
+ public:
+ // Backtrace
+ static oop backtrace(oop throwable);
+ static void set_backtrace(oop throwable, oop value);
+ // Needed by JVMTI to filter out this internal field.
+ static int get_backtrace_offset() { return backtrace_offset;}
+ static int get_detailMessage_offset() { return detailMessage_offset;}
+ // Message
+ static oop message(oop throwable);
+ static oop message(Handle throwable);
+ static void set_message(oop throwable, oop value);
+ // Print stack trace stored in exception by call-back to Java
+ // Note: this is no longer used in Merlin, but we still suppport
+ // it for compatibility.
+ static void print_stack_trace(oop throwable, oop print_stream);
+ static void print_stack_element(Handle stream, methodOop method, int bci);
+ static void print_stack_element(outputStream *st, methodOop method, int bci);
+ static void print_stack_usage(Handle stream);
+
+ // Allocate space for backtrace (created but stack trace not filled in)
+ static void allocate_backtrace(Handle throwable, TRAPS);
+ // Fill in current stack trace for throwable with preallocated backtrace (no GC)
+ static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
+
+ // Fill in current stack trace, can cause GC
+ static void fill_in_stack_trace(Handle throwable, TRAPS);
+ static void fill_in_stack_trace(Handle throwable);
+ // Programmatic access to stack trace
+ static oop get_stack_trace_element(oop throwable, int index, TRAPS);
+ static int get_stack_trace_depth(oop throwable, TRAPS);
+ // Printing
+ static void print(oop throwable, outputStream* st);
+ static void print(Handle throwable, outputStream* st);
+ static void print_stack_trace(oop throwable, outputStream* st);
+ // Debugging
+ friend class JavaClasses;
+};
+
+
+// Interface to java.lang.reflect.AccessibleObject objects
+
+class java_lang_reflect_AccessibleObject: AllStatic {
+ private:
+ // Note that to reduce dependencies on the JDK we compute these
+ // offsets at run-time.
+ static int override_offset;
+
+ static void compute_offsets();
+
+ public:
+ // Accessors
+ static jboolean override(oop reflect);
+ static void set_override(oop reflect, jboolean value);
+
+ // Debugging
+ friend class JavaClasses;
+};
+
+
+// Interface to java.lang.reflect.Method objects
+
+class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
+ private:
+ // Note that to reduce dependencies on the JDK we compute these
+ // offsets at run-time.
+ static int clazz_offset;
+ static int name_offset;
+ static int returnType_offset;
+ static int parameterTypes_offset;
+ static int exceptionTypes_offset;
+ static int slot_offset;
+ static int modifiers_offset;
+ static int signature_offset;
+ static int annotations_offset;
+ static int parameter_annotations_offset;
+ static int annotation_default_offset;
+
+ static void compute_offsets();
+
+ public:
+ // Allocation
+ static Handle create(TRAPS);
+
+ // Accessors
+ static oop clazz(oop reflect);
+ static void set_clazz(oop reflect, oop value);
+
+ static oop name(oop method);
+ static void set_name(oop method, oop value);
+
+ static oop return_type(oop method);
+ static void set_return_type(oop method, oop value);
+
+ static oop parameter_types(oop method);
+ static void set_parameter_types(oop method, oop value);
+
+ static oop exception_types(oop method);
+ static void set_exception_types(oop method, oop value);
+
+ static int slot(oop reflect);
+ static void set_slot(oop reflect, int value);
+
+ static int modifiers(oop method);
+ static void set_modifiers(oop method, int value);
+
+ static bool has_signature_field();
+ static oop signature(oop method);
+ static void set_signature(oop method, oop value);
+
+ static bool has_annotations_field();
+ static oop annotations(oop method);
+ static void set_annotations(oop method, oop value);
+
+ static bool has_parameter_annotations_field();
+ static oop parameter_annotations(oop method);
+ static void set_parameter_annotations(oop method, oop value);
+
+ static bool has_annotation_default_field();
+ static oop annotation_default(oop method);
+ static void set_annotation_default(oop method, oop value);
+
+ // Debugging
+ friend class JavaClasses;
+};
+
+
+// Interface to java.lang.reflect.Constructor objects
+
+class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
+ private:
+ // Note that to reduce dependencies on the JDK we compute these
+ // offsets at run-time.
+ static int clazz_offset;
+ static int parameterTypes_offset;
+ static int exceptionTypes_offset;
+ static int slot_offset;
+ static int modifiers_offset;
+ static int signature_offset;
+ static int annotations_offset;
+ static int parameter_annotations_offset;
+
+ static void compute_offsets();
+
+ public:
+ // Allocation
+ static Handle create(TRAPS);
+
+ // Accessors
+ static oop clazz(oop reflect);
+ static void set_clazz(oop reflect, oop value);
+
+ static oop parameter_types(oop constructor);
+ static void set_parameter_types(oop constructor, oop value);
+
+ static oop exception_types(oop constructor);
+ static void set_exception_types(oop constructor, oop value);
+
+ static int slot(oop reflect);
+ static void set_slot(oop reflect, int value);
+
+ static int modifiers(oop constructor);
+ static void set_modifiers(oop constructor, int value);
+
+ static bool has_signature_field();
+ static oop signature(oop constructor);
+ static void set_signature(oop constructor, oop value);
+
+ static bool has_annotations_field();
+ static oop annotations(oop constructor);
+ static void set_annotations(oop constructor, oop value);
+
+ static bool has_parameter_annotations_field();
+ static oop parameter_annotations(oop method);
+ static void set_parameter_annotations(oop method, oop value);
+
+ // Debugging
+ friend class JavaClasses;
+};
+
+
+// Interface to java.lang.reflect.Field objects
+
+class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
+ private:
+ // Note that to reduce dependencies on the JDK we compute these
+ // offsets at run-time.
+ static int clazz_offset;
+ static int name_offset;
+ static int type_offset;
+ static int slot_offset;
+ static int modifiers_offset;
+ static int signature_offset;
+ static int annotations_offset;
+
+ static void compute_offsets();
+
+ public:
+ // Allocation
+ static Handle create(TRAPS);
+
+ // Accessors
+ static oop clazz(oop reflect);
+ static void set_clazz(oop reflect, oop value);
+
+ static oop name(oop field);
+ static void set_name(oop field, oop value);
+
+ static oop type(oop field);
+ static void set_type(oop field, oop value);
+
+ static int slot(oop reflect);
+ static void set_slot(oop reflect, int value);
+
+ static int modifiers(oop field);
+ static void set_modifiers(oop field, int value);
+
+ static bool has_signature_field();
+ static oop signature(oop constructor);
+ static void set_signature(oop constructor, oop value);
+
+ static bool has_annotations_field();
+ static oop annotations(oop constructor);
+ static void set_annotations(oop constructor, oop value);
+
+ static bool has_parameter_annotations_field();
+ static oop parameter_annotations(oop method);
+ static void set_parameter_annotations(oop method, oop value);
+
+ static bool has_annotation_default_field();
+ static oop annotation_default(oop method);
+ static void set_annotation_default(oop method, oop value);
+
+ // Debugging
+ friend class JavaClasses;
+};
+
+// Interface to sun.reflect.ConstantPool objects
+class sun_reflect_ConstantPool {
+ private:
+ // Note that to reduce dependencies on the JDK we compute these
+ // offsets at run-time.
+ static int _cp_oop_offset;
+
+ static void compute_offsets();
+
+ public:
+ // Allocation
+ static Handle create(TRAPS);
+
+ // Accessors
+ static oop cp_oop(oop reflect);
+ static void set_cp_oop(oop reflect, oop value);
+ static int cp_oop_offset() {
+ return _cp_oop_offset;
+ }
+
+ // Debugging
+ friend class JavaClasses;
+};
+
+// Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects
+class sun_reflect_UnsafeStaticFieldAccessorImpl {
+ private:
+ static int _base_offset;
+ static void compute_offsets();
+
+ public:
+ static int base_offset() {
+ return _base_offset;
+ }
+
+ // Debugging
+ friend class JavaClasses;
+};
+
+// Interface to java.lang primitive type boxing objects:
+// - java.lang.Boolean
+// - java.lang.Character
+// - java.lang.Float
+// - java.lang.Double
+// - java.lang.Byte
+// - java.lang.Short
+// - java.lang.Integer
+// - java.lang.Long
+
+// This could be separated out into 8 individual classes.
+
+class java_lang_boxing_object: AllStatic {
+ private:
+ enum {
+ hc_value_offset = 0
+ };
+ static int value_offset;
+
+ static oop initialize_and_allocate(klassOop klass, TRAPS);
+ public:
+ // Allocation. Returns a boxed value, or NULL for invalid type.
+ static oop create(BasicType type, jvalue* value, TRAPS);
+ // Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
+ static BasicType get_value(oop box, jvalue* value);
+ static BasicType set_value(oop box, jvalue* value);
+
+ static int value_offset_in_bytes() { return value_offset; }
+
+ // Debugging
+ friend class JavaClasses;
+};
+
+
+
+// Interface to java.lang.ref.Reference objects
+
+class java_lang_ref_Reference: AllStatic {
+ public:
+ enum {
+ hc_referent_offset = 0,
+ hc_queue_offset = 1,
+ hc_next_offset = 2,
+ hc_discovered_offset = 3 // Is not last, see SoftRefs.
+ };
+ enum {
+ hc_static_lock_offset = 0,
+ hc_static_pending_offset = 1
+ };
+
+ static int referent_offset;
+ static int queue_offset;
+ static int next_offset;
+ static int discovered_offset;
+ static int static_lock_offset;
+ static int static_pending_offset;
+ static int number_of_fake_oop_fields;
+
+ // Accessors
+ static oop referent(oop ref) { return *referent_addr(ref); }
+ static void set_referent(oop ref, oop value);
+ static oop* referent_addr(oop ref);
+
+ static oop next(oop ref) { return *next_addr(ref); }
+ static void set_next(oop ref, oop value);
+ static oop* next_addr(oop ref);
+
+ static oop discovered(oop ref) { return *discovered_addr(ref); }
+ static void set_discovered(oop ref, oop value);
+ static oop* discovered_addr(oop ref);
+
+ // Accessors for statics
+ static oop pending_list_lock() { return *pending_list_lock_addr(); }
+ static oop pending_list() { return *pending_list_addr(); }
+
+ static oop* pending_list_lock_addr();
+ static oop* pending_list_addr();
+};
+
+
+// Interface to java.lang.ref.SoftReference objects
+
+class java_lang_ref_SoftReference: public java_lang_ref_Reference {
+ public:
+ enum {
+ // The timestamp is a long field and may need to be adjusted for alignment.
+ hc_timestamp_offset = align_object_offset_(hc_discovered_offset + 1)
+ };
+ enum {
+ hc_static_clock_offset = 0
+ };
+
+ static int timestamp_offset;
+ static int static_clock_offset;
+
+ // Accessors
+ static jlong timestamp(oop ref);
+
+ // Accessors for statics
+ static jlong clock();
+ static void set_clock(jlong value);
+};
+
+
+// Interface to java.security.AccessControlContext objects
+
+class java_security_AccessControlContext: AllStatic {
+ private:
+ // Note that for this class the layout changed between JDK1.2 and JDK1.3,
+ // so we compute the offsets at startup rather than hard-wiring them.
+ static int _context_offset;
+ static int _privilegedContext_offset;
+ static int _isPrivileged_offset;
+
+ static void compute_offsets();
+ public:
+ static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
+
+ // Debugging/initialization
+ friend class JavaClasses;
+};
+
+
+// Interface to java.lang.ClassLoader objects
+
+class java_lang_ClassLoader : AllStatic {
+ private:
+ enum {
+ hc_parent_offset = 0
+ };
+
+ static int parent_offset;
+
+ public:
+ static oop parent(oop loader);
+
+ static bool is_trusted_loader(oop loader);
+
+ // Fix for 4474172
+ static oop non_reflection_class_loader(oop loader);
+
+ // Debugging
+ friend class JavaClasses;
+};
+
+
+// Interface to java.lang.System objects
+
+class java_lang_System : AllStatic {
+ private:
+ enum {
+ hc_static_in_offset = 0,
+ hc_static_out_offset = 1,
+ hc_static_err_offset = 2
+ };
+
+ static int offset_of_static_fields;
+ static int static_in_offset;
+ static int static_out_offset;
+ static int static_err_offset;
+
+ static void compute_offsets();
+
+ public:
+ static int in_offset_in_bytes();
+ static int out_offset_in_bytes();
+ static int err_offset_in_bytes();
+
+ // Debugging
+ friend class JavaClasses;
+};
+
+
+// Interface to java.lang.StackTraceElement objects
+
+class java_lang_StackTraceElement: AllStatic {
+ private:
+ enum {
+ hc_declaringClass_offset = 0,
+ hc_methodName_offset = 1,
+ hc_fileName_offset = 2,
+ hc_lineNumber_offset = 3
+ };
+
+ static int declaringClass_offset;
+ static int methodName_offset;
+ static int fileName_offset;
+ static int lineNumber_offset;
+
+ public:
+ // Setters
+ static void set_declaringClass(oop element, oop value);
+ static void set_methodName(oop element, oop value);
+ static void set_fileName(oop element, oop value);
+ static void set_lineNumber(oop element, int value);
+
+ // Create an instance of StackTraceElement
+ static oop create(methodHandle m, int bci, TRAPS);
+
+ // Debugging
+ friend class JavaClasses;
+};
+
+
+// Interface to java.lang.AssertionStatusDirectives objects
+
+class java_lang_AssertionStatusDirectives: AllStatic {
+ private:
+ enum {
+ hc_classes_offset,
+ hc_classEnabled_offset,
+ hc_packages_offset,
+ hc_packageEnabled_offset,
+ hc_deflt_offset
+ };
+
+ static int classes_offset;
+ static int classEnabled_offset;
+ static int packages_offset;
+ static int packageEnabled_offset;
+ static int deflt_offset;
+
+ public:
+ // Setters
+ static void set_classes(oop obj, oop val);
+ static void set_classEnabled(oop obj, oop val);
+ static void set_packages(oop obj, oop val);
+ static void set_packageEnabled(oop obj, oop val);
+ static void set_deflt(oop obj, bool val);
+ // Debugging
+ friend class JavaClasses;
+};
+
+
+class java_nio_Buffer: AllStatic {
+ private:
+ static int _limit_offset;
+
+ public:
+ static int limit_offset();
+ static void compute_offsets();
+};
+
+class sun_misc_AtomicLongCSImpl: AllStatic {
+ private:
+ static int _value_offset;
+
+ public:
+ static int value_offset();
+ static void compute_offsets();
+};
+
+class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
+ private:
+ static int _owner_offset;
+ public:
+ static void initialize(TRAPS);
+ static oop get_owner_threadObj(oop obj);
+};
+
+// Interface to hard-coded offset checking
+
+class JavaClasses : AllStatic {
+ private:
+ static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
+ static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
+ public:
+ static void compute_hard_coded_offsets();
+ static void compute_offsets();
+ static void check_offsets() PRODUCT_RETURN;
+};