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javaClasses.hpp
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javaClasses.hpp
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/*
* Copyright (c) 1997, 2021, 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.
*
*/
#ifndef SHARE_CLASSFILE_JAVACLASSES_HPP
#define SHARE_CLASSFILE_JAVACLASSES_HPP
#include "classfile/vmClasses.hpp"
#include "oops/oop.hpp"
#include "oops/instanceKlass.hpp"
#include "oops/symbol.hpp"
#include "runtime/os.hpp"
#include "utilities/vmEnums.hpp"
class RecordComponent;
// Interface for manipulating the basic Java classes.
#define BASIC_JAVA_CLASSES_DO_PART1(f) \
f(java_lang_Class) \
f(java_lang_String) \
f(java_lang_ref_Reference) \
//end
#define BASIC_JAVA_CLASSES_DO_PART2(f) \
f(java_lang_System) \
f(java_lang_ClassLoader) \
f(java_lang_Throwable) \
f(java_lang_Thread) \
f(java_lang_ThreadGroup) \
f(java_lang_InternalError) \
f(java_lang_AssertionStatusDirectives) \
f(java_lang_ref_SoftReference) \
f(java_lang_invoke_MethodHandle) \
f(java_lang_invoke_DirectMethodHandle) \
f(java_lang_invoke_MemberName) \
f(java_lang_invoke_ResolvedMethodName) \
f(java_lang_invoke_LambdaForm) \
f(java_lang_invoke_MethodType) \
f(java_lang_invoke_CallSite) \
f(java_lang_invoke_ConstantCallSite) \
f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \
f(java_security_AccessControlContext) \
f(java_lang_reflect_AccessibleObject) \
f(java_lang_reflect_Method) \
f(java_lang_reflect_Constructor) \
f(java_lang_reflect_Field) \
f(java_lang_reflect_RecordComponent) \
f(java_nio_Buffer) \
f(reflect_ConstantPool) \
f(reflect_UnsafeStaticFieldAccessorImpl) \
f(java_lang_reflect_Parameter) \
f(java_lang_Module) \
f(java_lang_StackTraceElement) \
f(java_lang_StackFrameInfo) \
f(java_lang_LiveStackFrameInfo) \
f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \
f(jdk_internal_invoke_NativeEntryPoint) \
f(jdk_internal_misc_UnsafeConstants) \
f(java_lang_boxing_object) \
f(vector_VectorPayload) \
//end
#define BASIC_JAVA_CLASSES_DO(f) \
BASIC_JAVA_CLASSES_DO_PART1(f) \
BASIC_JAVA_CLASSES_DO_PART2(f)
#define CHECK_INIT(offset) assert(offset != 0, "should be initialized"); return offset;
// Interface to java.lang.Object objects
class java_lang_Object : AllStatic {
public:
static void register_natives(TRAPS);
};
// Interface to java.lang.String objects
// The flags field is a collection of bits representing boolean values used
// internally by the VM.
#define STRING_INJECTED_FIELDS(macro) \
macro(java_lang_String, flags, byte_signature, false)
class java_lang_String : AllStatic {
private:
static int _value_offset;
static int _hash_offset;
static int _hashIsZero_offset;
static int _coder_offset;
static int _flags_offset;
static bool _initialized;
static Handle basic_create(int length, bool byte_arr, TRAPS);
static inline void set_coder(oop string, jbyte coder);
// Bitmasks for values in the injected flags field.
static const uint8_t _deduplication_forbidden_mask = 1 << 0;
static const uint8_t _deduplication_requested_mask = 1 << 1;
static int flags_offset() { CHECK_INIT(_flags_offset); }
// Return the address of the injected flags field.
static inline uint8_t* flags_addr(oop java_string);
// Test whether the designated bit of the injected flags field is set.
static inline bool is_flag_set(oop java_string, uint8_t flag_mask);
// Atomically test and set the designated bit of the injected flags field,
// returning true if the bit was already set.
static bool test_and_set_flag(oop java_string, uint8_t flag_mask);
public:
// Coders
enum Coder {
CODER_LATIN1 = 0,
CODER_UTF16 = 1
};
static void compute_offsets();
static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
// Instance creation
static Handle create_from_unicode(const jchar* unicode, int len, TRAPS);
static oop create_oop_from_unicode(const 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(Symbol* 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 void set_compact_strings(bool value);
static int value_offset() { CHECK_INIT(_value_offset); }
static int coder_offset() { CHECK_INIT(_coder_offset); }
static inline void set_value_raw(oop string, typeArrayOop buffer);
static inline void set_value(oop string, typeArrayOop buffer);
// Set the deduplication_forbidden flag true. This flag is sticky; once
// set it never gets cleared. This is set when a String is interned in
// the StringTable, to prevent string deduplication from changing the
// String's value array.
static inline void set_deduplication_forbidden(oop java_string);
// Test and set the deduplication_requested flag. Returns the old value
// of the flag. This flag is sticky; once set it never gets cleared.
// Some GCs may use this flag when deciding whether to request
// deduplication of a String, to avoid multiple requests for the same
// object.
static inline bool test_and_set_deduplication_requested(oop java_string);
// Accessors
static inline typeArrayOop value(oop java_string);
static inline typeArrayOop value_no_keepalive(oop java_string);
static inline bool hash_is_set(oop string);
static inline bool is_latin1(oop java_string);
static inline bool deduplication_forbidden(oop java_string);
static inline bool deduplication_requested(oop java_string);
static inline int length(oop java_string);
static inline int length(oop java_string, typeArrayOop string_value);
static int utf8_length(oop java_string);
static int utf8_length(oop java_string, typeArrayOop string_value);
// String converters
static char* as_utf8_string(oop java_string);
static char* as_utf8_string(oop java_string, int& length);
static char* as_utf8_string_full(oop java_string, char* buf, int buflen, int& length);
static char* as_utf8_string(oop java_string, char* buf, int buflen);
static char* as_utf8_string(oop java_string, int start, int len);
static char* as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen);
static char* as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen);
static char* as_platform_dependent_str(Handle java_string, TRAPS);
static jchar* as_unicode_string(oop java_string, int& length, TRAPS);
static jchar* as_unicode_string_or_null(oop java_string, int& length);
// produce an ascii string with all other values quoted using \u####
static char* as_quoted_ascii(oop java_string);
// Compute the hash value for a java.lang.String object which would
// contain the characters passed in.
//
// As the hash value used by the String object itself, in
// String.hashCode(). This value is normally calculated in Java code
// in the String.hashCode method(), but is precomputed for String
// objects in the shared archive file.
// hash P(31) from Kernighan & Ritchie
//
// For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
static unsigned int hash_code(const jchar* s, int len) {
unsigned int h = 0;
while (len-- > 0) {
h = 31*h + (unsigned int) *s;
s++;
}
return h;
}
static unsigned int hash_code(const jbyte* s, int len) {
unsigned int h = 0;
while (len-- > 0) {
h = 31*h + (((unsigned int) *s) & 0xFF);
s++;
}
return h;
}
static unsigned int hash_code(oop java_string);
static bool equals(oop java_string, const jchar* chars, int len);
static bool equals(oop str1, oop str2);
static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
// Conversion between '.' and '/' formats
static Handle externalize_classname(Handle java_string, TRAPS) {
return char_converter(java_string, JVM_SIGNATURE_SLASH, JVM_SIGNATURE_DOT, THREAD);
}
// Conversion
static Symbol* as_symbol(oop java_string);
static Symbol* as_symbol_or_null(oop java_string);
// Testers
static bool is_instance(oop obj);
static inline bool is_instance_inlined(oop obj);
// Debugging
static void print(oop java_string, outputStream* st);
friend class JavaClasses;
friend class StringTable;
};
// Interface to java.lang.Class objects
#define CLASS_INJECTED_FIELDS(macro) \
macro(java_lang_Class, klass, intptr_signature, false) \
macro(java_lang_Class, array_klass, intptr_signature, false) \
macro(java_lang_Class, oop_size, int_signature, false) \
macro(java_lang_Class, static_oop_field_count, int_signature, false) \
macro(java_lang_Class, protection_domain, object_signature, false) \
macro(java_lang_Class, signers, object_signature, false) \
macro(java_lang_Class, source_file, object_signature, false) \
class java_lang_Class : AllStatic {
friend class VMStructs;
friend class JVMCIVMStructs;
private:
// The fake offsets are added by the class loader when java.lang.Class is loaded
static int _klass_offset;
static int _array_klass_offset;
static int _oop_size_offset;
static int _static_oop_field_count_offset;
static int _protection_domain_offset;
static int _init_lock_offset;
static int _signers_offset;
static int _class_loader_offset;
static int _module_offset;
static int _component_mirror_offset;
static int _name_offset;
static int _source_file_offset;
static int _classData_offset;
static int _classRedefinedCount_offset;
static bool _offsets_computed;
static GrowableArray<Klass*>* _fixup_mirror_list;
static GrowableArray<Klass*>* _fixup_module_field_list;
static void set_init_lock(oop java_class, oop init_lock);
static void set_protection_domain(oop java_class, oop protection_domain);
static void set_class_loader(oop java_class, oop class_loader);
static void set_component_mirror(oop java_class, oop comp_mirror);
static void initialize_mirror_fields(Klass* k, Handle mirror, Handle protection_domain,
Handle classData, TRAPS);
static void set_mirror_module_field(JavaThread* current, Klass* K, Handle mirror, Handle module);
public:
static void allocate_fixup_lists();
static void compute_offsets();
// Instance creation
static void create_mirror(Klass* k, Handle class_loader, Handle module,
Handle protection_domain, Handle classData, TRAPS);
static void fixup_mirror(Klass* k, TRAPS);
static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
static void update_archived_primitive_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
static void update_archived_mirror_native_pointers(oop archived_mirror) NOT_CDS_JAVA_HEAP_RETURN;
// Archiving
static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
static void archive_basic_type_mirrors() NOT_CDS_JAVA_HEAP_RETURN;
static oop archive_mirror(Klass* k) NOT_CDS_JAVA_HEAP_RETURN_(NULL);
static oop process_archived_mirror(Klass* k, oop mirror, oop archived_mirror)
NOT_CDS_JAVA_HEAP_RETURN_(NULL);
static bool restore_archived_mirror(Klass *k, Handle class_loader, Handle module,
Handle protection_domain,
TRAPS) NOT_CDS_JAVA_HEAP_RETURN_(false);
static void fixup_module_field(Klass* k, Handle module);
// Conversion
static Klass* as_Klass(oop java_class);
static Klass* as_Klass_raw(oop java_class);
static void set_klass(oop java_class, Klass* klass);
static BasicType as_BasicType(oop java_class, Klass** reference_klass = NULL);
static Symbol* as_signature(oop java_class, bool intern_if_not_found);
static void print_signature(oop java_class, outputStream *st);
static const char* as_external_name(oop java_class);
// Testing
static bool is_instance(oop obj);
static bool is_primitive(oop java_class);
static BasicType primitive_type(oop java_class);
static oop primitive_mirror(BasicType t);
// JVM_NewArray support
static Klass* array_klass_acquire(oop java_class);
static void release_set_array_klass(oop java_class, Klass* klass);
// compiler support for class operations
static int klass_offset() { CHECK_INIT(_klass_offset); }
static int array_klass_offset() { CHECK_INIT(_array_klass_offset); }
// Support for classRedefinedCount field
static int classRedefinedCount(oop the_class_mirror);
static void set_classRedefinedCount(oop the_class_mirror, int value);
// Support for embedded per-class oops
static oop protection_domain(oop java_class);
static oop init_lock(oop java_class);
static void clear_init_lock(oop java_class) {
set_init_lock(java_class, NULL);
}
static oop component_mirror(oop java_class);
static objArrayOop signers(oop java_class);
static void set_signers(oop java_class, objArrayOop signers);
static oop class_data(oop java_class);
static void set_class_data(oop java_class, oop classData);
static int component_mirror_offset() { return _component_mirror_offset; }
static oop class_loader(oop java_class);
static void set_module(oop java_class, oop module);
static oop module(oop java_class);
static oop name(Handle java_class, TRAPS);
static oop source_file(oop java_class);
static void set_source_file(oop java_class, oop source_file);
static int oop_size(oop java_class);
static int oop_size_raw(oop java_class);
static void set_oop_size(HeapWord* java_class, int size);
static int static_oop_field_count(oop java_class);
static int static_oop_field_count_raw(oop java_class);
static void set_static_oop_field_count(oop java_class, int size);
static GrowableArray<Klass*>* fixup_mirror_list() {
return _fixup_mirror_list;
}
static void set_fixup_mirror_list(GrowableArray<Klass*>* v) {
_fixup_mirror_list = v;
}
static GrowableArray<Klass*>* fixup_module_field_list() {
return _fixup_module_field_list;
}
static void set_fixup_module_field_list(GrowableArray<Klass*>* v) {
_fixup_module_field_list = v;
}
// Debugging
friend class JavaClasses;
};
// 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 _interrupted_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 void compute_offsets();
public:
static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
// Returns the JavaThread associated with the thread obj
static JavaThread* thread(oop java_thread);
static JavaThread* thread_acquire(oop java_thread);
// Set JavaThread for instance
static void set_thread(oop java_thread, JavaThread* thread);
static void release_set_thread(oop java_thread, JavaThread* thread);
// Interrupted status
static bool interrupted(oop java_thread);
static void set_interrupted(oop java_thread, bool val);
// Name
static oop name(oop java_thread);
static void set_name(oop java_thread, oop 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);
// Write thread status info to threadStatus field of java.lang.Thread.
static void set_thread_status(oop java_thread_oop, JavaThreadStatus status);
// Read thread status info from threadStatus field of java.lang.Thread.
static JavaThreadStatus 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 _nthreads_offset;
static int _ngroups_offset;
static void compute_offsets();
public:
static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
// parent ThreadGroup
static oop parent(oop java_thread_group);
// name
static const char* 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);
// Debugging
friend class JavaClasses;
};
// Interface to java.lang.Throwable objects
class java_lang_Throwable: AllStatic {
friend class BacktraceBuilder;
friend class BacktraceIterator;
private:
// Trace constants
enum {
trace_methods_offset = 0,
trace_bcis_offset = 1,
trace_mirrors_offset = 2,
trace_names_offset = 3,
trace_next_offset = 4,
trace_hidden_offset = 5,
trace_size = 6,
trace_chunk_size = 32
};
static int _backtrace_offset;
static int _detailMessage_offset;
static int _stackTrace_offset;
static int _depth_offset;
static int _cause_offset;
static int _static_unassigned_stacktrace_offset;
// StackTrace (programmatic access, new since 1.4)
static void clear_stacktrace(oop throwable);
// Stacktrace (post JDK 1.7.0 to allow immutability protocol to be followed)
static void set_stacktrace(oop throwable, oop st_element_array);
static oop unassigned_stacktrace();
public:
// Backtrace
static oop backtrace(oop throwable);
static void set_backtrace(oop throwable, oop value);
static int depth(oop throwable);
static void set_depth(oop throwable, int value);
// Message
static int get_detailMessage_offset() { CHECK_INIT(_detailMessage_offset); }
static oop message(oop throwable);
static const char* message_as_utf8(oop throwable);
static void set_message(oop throwable, oop value);
static oop cause(oop throwable);
static void print_stack_element(outputStream *st, Method* method, int bci);
static void compute_offsets();
static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
// 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, const methodHandle& method, TRAPS);
static void fill_in_stack_trace(Handle throwable, const methodHandle& method = methodHandle());
// Programmatic access to stack trace
static void get_stack_trace_elements(Handle throwable, objArrayHandle stack_trace, TRAPS);
// For recreating class initialization error exceptions.
static Handle create_initialization_error(JavaThread* current, Handle throwable);
// Printing
static void print(oop throwable, outputStream* st);
static void print_stack_trace(Handle throwable, outputStream* st);
static void java_printStackTrace(Handle throwable, TRAPS);
// Debugging
friend class JavaClasses;
// Gets the method and bci of the top frame (TOS). Returns false if this failed.
static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
};
// 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:
static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
// 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:
static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
// Allocation
static Handle create(TRAPS);
// Accessors
static oop clazz(oop reflect);
static void set_clazz(oop reflect, oop value);
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 int slot(oop reflect);
static void set_slot(oop reflect, int value);
static void set_exception_types(oop method, oop value);
static void set_modifiers(oop method, int value);
static void set_signature(oop method, oop value);
static void set_annotations(oop method, oop value);
static void set_parameter_annotations(oop method, oop value);
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:
static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
// 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 int slot(oop reflect);
static void set_slot(oop reflect, int value);
static void set_exception_types(oop constructor, oop value);
static void set_modifiers(oop constructor, int value);
static void set_signature(oop constructor, oop value);
static void set_annotations(oop constructor, oop value);
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 _trusted_final_offset;
static int _signature_offset;
static int _annotations_offset;
static void compute_offsets();
public:
static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
// 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 void set_trusted_final(oop field);
static void set_signature(oop constructor, oop value);
static void set_annotations(oop constructor, oop value);
// Debugging
friend class JavaClasses;
};
class java_lang_reflect_Parameter {
private:
// Note that to reduce dependencies on the JDK we compute these
// offsets at run-time.
static int _name_offset;
static int _modifiers_offset;
static int _index_offset;
static int _executable_offset;
static void compute_offsets();
public:
static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
// Allocation
static Handle create(TRAPS);
// Accessors
static oop name(oop field);
static void set_name(oop field, oop value);
static int index(oop reflect);
static void set_index(oop reflect, int value);
static int modifiers(oop reflect);
static void set_modifiers(oop reflect, int value);
static oop executable(oop constructor);
static void set_executable(oop constructor, oop value);
friend class JavaClasses;
};
#define MODULE_INJECTED_FIELDS(macro) \
macro(java_lang_Module, module_entry, intptr_signature, false)
class java_lang_Module {
private:
static int _loader_offset;
static int _name_offset;
static int _module_entry_offset;
static void compute_offsets();
public:
static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
// Allocation
static Handle create(Handle loader, Handle module_name, TRAPS);
// Testers
static bool is_instance(oop obj);
// Accessors
static oop loader(oop module);
static void set_loader(oop module, oop value);
static oop name(oop module);
static void set_name(oop module, oop value);
static ModuleEntry* module_entry(oop module);
static ModuleEntry* module_entry_raw(oop module);
static void set_module_entry(oop module, ModuleEntry* module_entry);
friend class JavaClasses;
};
// Interface to jdk.internal.reflect.ConstantPool objects
class reflect_ConstantPool {
private:
// Note that to reduce dependencies on the JDK we compute these
// offsets at run-time.
static int _oop_offset;
static void compute_offsets();
public:
static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
// Allocation
static Handle create(TRAPS);
// Accessors
static void set_cp(oop reflect, ConstantPool* value);
static int oop_offset() { CHECK_INIT(_oop_offset); }
static ConstantPool* get_cp(oop reflect);
// Debugging
friend class JavaClasses;
};
// Interface to jdk.internal.reflect.UnsafeStaticFieldAccessorImpl objects
class reflect_UnsafeStaticFieldAccessorImpl {
private:
static int _base_offset;
static void compute_offsets();
public:
static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
static int base_offset() { CHECK_INIT(_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:
static int _value_offset;
static int _long_value_offset;
static void compute_offsets();
static oop initialize_and_allocate(BasicType type, 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 BasicType basic_type(oop box);
static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
static void print(BasicType type, jvalue* value, outputStream* st);
static int value_offset(BasicType type) {
return is_double_word_type(type) ? _long_value_offset : _value_offset;
}
static void serialize_offsets(SerializeClosure* f);
// Debugging
friend class JavaClasses;
};
// Interface to java.lang.ref.Reference objects
class java_lang_ref_Reference: AllStatic {
static int _referent_offset;
static int _queue_offset;
static int _next_offset;
static int _discovered_offset;
static bool _offsets_initialized;
public:
// Accessors
static inline oop weak_referent_no_keepalive(oop ref);
static inline oop phantom_referent_no_keepalive(oop ref);
static inline oop unknown_referent_no_keepalive(oop ref);
static inline void clear_referent(oop ref);
static inline HeapWord* referent_addr_raw(oop ref);
static inline oop next(oop ref);
static inline void set_next(oop ref, oop value);
static inline void set_next_raw(oop ref, oop value);
static inline HeapWord* next_addr_raw(oop ref);
static inline oop discovered(oop ref);
static inline void set_discovered(oop ref, oop value);
static inline void set_discovered_raw(oop ref, oop value);
static inline HeapWord* discovered_addr_raw(oop ref);
static bool is_referent_field(oop obj, ptrdiff_t offset);
static inline bool is_final(oop ref);
static inline bool is_phantom(oop ref);
static inline bool is_weak(oop ref);
static inline bool is_soft(oop ref);
static int referent_offset() { CHECK_INIT(_referent_offset); }
static int queue_offset() { CHECK_INIT(_queue_offset); }
static int next_offset() { CHECK_INIT(_next_offset); }
static int discovered_offset() { CHECK_INIT(_discovered_offset); }
static void compute_offsets();
static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
};
// Interface to java.lang.ref.SoftReference objects
class java_lang_ref_SoftReference: public java_lang_ref_Reference {
static int _timestamp_offset;
static int _static_clock_offset;
public:
// Accessors
static jlong timestamp(oop ref);
// Accessors for statics
static jlong clock();
static void set_clock(jlong value);
static void compute_offsets();
static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
};
// Interface to java.lang.invoke.MethodHandle objects
class java_lang_invoke_MethodHandle: AllStatic {
friend class JavaClasses;
private:
static int _type_offset; // the MethodType of this MH
static int _form_offset; // the LambdaForm of this MH
static void compute_offsets();
public:
static void serialize_offsets(SerializeClosure* f) NOT_CDS_RETURN;
// Accessors
static oop type(oop mh);
static void set_type(oop mh, oop mtype);
static oop form(oop mh);
static void set_form(oop mh, oop lform);
// Testers
static bool is_subclass(Klass* klass) {
return klass->is_subclass_of(vmClasses::MethodHandle_klass());
}
static bool is_instance(oop obj);
// Accessors for code generation:
static int type_offset() { CHECK_INIT(_type_offset); }
static int form_offset() { CHECK_INIT(_form_offset); }
};
// Interface to java.lang.invoke.DirectMethodHandle objects
class java_lang_invoke_DirectMethodHandle: AllStatic {
friend class JavaClasses;
private: