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src/share/vm/classfile/javaClasses.hpp@167b70ff3abc (annotated)

src/share/vm/classfile/javaClasses.hpp

Fri, 06 May 2011 16:33:13 -0700

author

never

date

Fri, 06 May 2011 16:33:13 -0700

changeset 2895

167b70ff3abc

parent 2804

01147d8aac1d

child 2982

ddd894528dbc

permissions

-rw-r--r--

6939861: JVM should handle more conversion operations
Reviewed-by: twisti, jrose

duke@435	1	/*
jrose@2639	2	* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#ifndef SHARE_VM_CLASSFILE_JAVACLASSES_HPP
stefank@2314	26	#define SHARE_VM_CLASSFILE_JAVACLASSES_HPP
stefank@2314	27
stefank@2314	28	#include "classfile/systemDictionary.hpp"
stefank@2314	29	#include "jvmtifiles/jvmti.h"
stefank@2314	30	#include "oops/oop.hpp"
stefank@2314	31	#include "runtime/os.hpp"
stefank@2314	32	#include "utilities/utf8.hpp"
stefank@2314	33
duke@435	34	// Interface for manipulating the basic Java classes.
duke@435	35	//
duke@435	36	// All dependencies on layout of actual Java classes should be kept here.
duke@435	37	// If the layout of any of the classes above changes the offsets must be adjusted.
duke@435	38	//
duke@435	39	// For most classes we hardwire the offsets for performance reasons. In certain
duke@435	40	// cases (e.g. java.security.AccessControlContext) we compute the offsets at
duke@435	41	// startup since the layout here differs between JDK1.2 and JDK1.3.
duke@435	42	//
duke@435	43	// Note that fields (static and non-static) are arranged with oops before non-oops
duke@435	44	// on a per class basis. The offsets below have to reflect this ordering.
duke@435	45	//
duke@435	46	// When editing the layouts please update the check_offset verification code
duke@435	47	// correspondingly. The names in the enums must be identical to the actual field
duke@435	48	// names in order for the verification code to work.
duke@435	49
duke@435	50
duke@435	51	// Interface to java.lang.String objects
duke@435	52
duke@435	53	class java_lang_String : AllStatic {
duke@435	54	private:
duke@435	55	enum {
duke@435	56	hc_value_offset = 0,
jrose@567	57	hc_offset_offset = 1
jrose@567	58	//hc_count_offset = 2 -- not a word-scaled offset
jrose@567	59	//hc_hash_offset = 3 -- not a word-scaled offset
duke@435	60	};
duke@435	61
duke@435	62	static int value_offset;
duke@435	63	static int offset_offset;
duke@435	64	static int count_offset;
duke@435	65	static int hash_offset;
duke@435	66
duke@435	67	static Handle basic_create(int length, bool tenured, TRAPS);
duke@435	68	static Handle basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS);
duke@435	69
duke@435	70	static void set_value( oop string, typeArrayOop buffer) { string->obj_field_put(value_offset, (oop)buffer); }
duke@435	71	static void set_offset(oop string, int offset) { string->int_field_put(offset_offset, offset); }
duke@435	72	static void set_count( oop string, int count) { string->int_field_put(count_offset, count); }
duke@435	73
duke@435	74	public:
duke@435	75	// Instance creation
duke@435	76	static Handle create_from_unicode(jchar* unicode, int len, TRAPS);
duke@435	77	static Handle create_tenured_from_unicode(jchar* unicode, int len, TRAPS);
duke@435	78	static oop create_oop_from_unicode(jchar* unicode, int len, TRAPS);
duke@435	79	static Handle create_from_str(const char* utf8_str, TRAPS);
duke@435	80	static oop create_oop_from_str(const char* utf8_str, TRAPS);
coleenp@2497	81	static Handle create_from_symbol(Symbol* symbol, TRAPS);
duke@435	82	static Handle create_from_platform_dependent_str(const char* str, TRAPS);
duke@435	83	static Handle char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS);
duke@435	84
duke@435	85	static int value_offset_in_bytes() { return value_offset; }
duke@435	86	static int count_offset_in_bytes() { return count_offset; }
duke@435	87	static int offset_offset_in_bytes() { return offset_offset; }
duke@435	88	static int hash_offset_in_bytes() { return hash_offset; }
duke@435	89
duke@435	90	// Accessors
duke@435	91	static typeArrayOop value(oop java_string) {
duke@435	92	assert(is_instance(java_string), "must be java_string");
duke@435	93	return (typeArrayOop) java_string->obj_field(value_offset);
duke@435	94	}
duke@435	95	static int offset(oop java_string) {
duke@435	96	assert(is_instance(java_string), "must be java_string");
duke@435	97	return java_string->int_field(offset_offset);
duke@435	98	}
duke@435	99	static int length(oop java_string) {
duke@435	100	assert(is_instance(java_string), "must be java_string");
duke@435	101	return java_string->int_field(count_offset);
duke@435	102	}
duke@435	103	static int utf8_length(oop java_string);
duke@435	104
duke@435	105	// String converters
duke@435	106	static char* as_utf8_string(oop java_string);
sla@2331	107	static char* as_utf8_string(oop java_string, char* buf, int buflen);
duke@435	108	static char* as_utf8_string(oop java_string, int start, int len);
coleenp@457	109	static char* as_platform_dependent_str(Handle java_string, TRAPS);
duke@435	110	static jchar* as_unicode_string(oop java_string, int& length);
duke@435	111
never@2700	112	// Compute the hash value for a java.lang.String object which would
never@2700	113	// contain the characters passed in. This hash value is used for at
never@2700	114	// least two purposes.
never@2700	115	//
never@2700	116	// (a) As the hash value used by the StringTable for bucket selection
never@2700	117	// and comparison (stored in the HashtableEntry structures). This
never@2700	118	// is used in the String.intern() method.
never@2700	119	//
never@2700	120	// (b) As the hash value used by the String object itself, in
never@2700	121	// String.hashCode(). This value is normally calculate in Java code
never@2700	122	// in the String.hashCode method(), but is precomputed for String
never@2700	123	// objects in the shared archive file.
never@2700	124	//
never@2700	125	// For this reason, THIS ALGORITHM MUST MATCH String.hashCode().
never@2700	126	static unsigned int hash_string(jchar* s, int len) {
never@2700	127	unsigned int h = 0;
never@2700	128	while (len-- > 0) {
never@2700	129	h = 31*h + (unsigned int) *s;
never@2700	130	s++;
never@2700	131	}
never@2700	132	return h;
never@2700	133	}
never@2700	134	static unsigned int hash_string(oop java_string);
never@2700	135
duke@435	136	static bool equals(oop java_string, jchar* chars, int len);
duke@435	137
duke@435	138	// Conversion between '.' and '/' formats
duke@435	139	static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
duke@435	140	static Handle internalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '.', '/', THREAD); }
duke@435	141
duke@435	142	// Conversion
coleenp@2497	143	static Symbol* as_symbol(Handle java_string, TRAPS);
coleenp@2497	144	static Symbol* as_symbol_or_null(oop java_string);
duke@435	145
duke@435	146	// Testers
duke@435	147	static bool is_instance(oop obj) {
never@1577	148	return obj != NULL && obj->klass() == SystemDictionary::String_klass();
duke@435	149	}
duke@435	150
duke@435	151	// Debugging
duke@435	152	static void print(Handle java_string, outputStream* st);
duke@435	153	friend class JavaClasses;
duke@435	154	};
duke@435	155
duke@435	156
duke@435	157	// Interface to java.lang.Class objects
duke@435	158
duke@435	159	class java_lang_Class : AllStatic {
duke@435	160	friend class VMStructs;
duke@435	161	private:
duke@435	162	// The fake offsets are added by the class loader when java.lang.Class is loaded
duke@435	163
duke@435	164	enum {
never@2658	165	hc_number_of_fake_oop_fields = 3,
never@2658	166	hc_number_of_fake_int_fields = 2
duke@435	167	};
duke@435	168
duke@435	169	static int klass_offset;
duke@435	170	static int resolved_constructor_offset;
duke@435	171	static int array_klass_offset;
duke@435	172	static int number_of_fake_oop_fields;
duke@435	173
never@2658	174	static int oop_size_offset;
never@2658	175	static int static_oop_field_count_offset;
never@2658	176
duke@435	177	static void compute_offsets();
duke@435	178	static bool offsets_computed;
duke@435	179	static int classRedefinedCount_offset;
acorn@949	180	static int parallelCapable_offset;
duke@435	181
duke@435	182	public:
duke@435	183	// Instance creation
duke@435	184	static oop create_mirror(KlassHandle k, TRAPS);
never@2658	185	static void fixup_mirror(KlassHandle k, TRAPS);
duke@435	186	static oop create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS);
duke@435	187	// Conversion
duke@435	188	static klassOop as_klassOop(oop java_class);
jrose@1100	189	static BasicType as_BasicType(oop java_class, klassOop* reference_klass = NULL);
jrose@1145	190	static BasicType as_BasicType(oop java_class, KlassHandle* reference_klass) {
jrose@1145	191	klassOop refk_oop = NULL;
jrose@1145	192	BasicType result = as_BasicType(java_class, &refk_oop);
jrose@1145	193	(*reference_klass) = KlassHandle(refk_oop);
jrose@1145	194	return result;
jrose@1145	195	}
coleenp@2497	196	static Symbol* as_signature(oop java_class, bool intern_if_not_found, TRAPS);
jrose@1100	197	static void print_signature(oop java_class, outputStream *st);
duke@435	198	// Testing
jrose@567	199	static bool is_instance(oop obj) {
never@1577	200	return obj != NULL && obj->klass() == SystemDictionary::Class_klass();
jrose@567	201	}
duke@435	202	static bool is_primitive(oop java_class);
duke@435	203	static BasicType primitive_type(oop java_class);
duke@435	204	static oop primitive_mirror(BasicType t);
duke@435	205	// JVM_NewInstance support
duke@435	206	static methodOop resolved_constructor(oop java_class);
duke@435	207	static void set_resolved_constructor(oop java_class, methodOop constructor);
duke@435	208	// JVM_NewArray support
duke@435	209	static klassOop array_klass(oop java_class);
duke@435	210	static void set_array_klass(oop java_class, klassOop klass);
duke@435	211	// compiler support for class operations
duke@435	212	static int klass_offset_in_bytes() { return klass_offset; }
duke@435	213	static int resolved_constructor_offset_in_bytes() { return resolved_constructor_offset; }
duke@435	214	static int array_klass_offset_in_bytes() { return array_klass_offset; }
duke@435	215	// Support for classRedefinedCount field
duke@435	216	static int classRedefinedCount(oop the_class_mirror);
duke@435	217	static void set_classRedefinedCount(oop the_class_mirror, int value);
acorn@949	218	// Support for parallelCapable field
acorn@949	219	static bool parallelCapable(oop the_class_mirror);
never@2658	220
never@2658	221	static int oop_size(oop java_class);
never@2658	222	static void set_oop_size(oop java_class, int size);
never@2658	223	static int static_oop_field_count(oop java_class);
never@2658	224	static void set_static_oop_field_count(oop java_class, int size);
never@2658	225
duke@435	226	// Debugging
duke@435	227	friend class JavaClasses;
duke@435	228	friend class instanceKlass; // verification code accesses offsets
duke@435	229	friend class ClassFileParser; // access to number_of_fake_fields
duke@435	230	};
duke@435	231
duke@435	232	// Interface to java.lang.Thread objects
duke@435	233
duke@435	234	class java_lang_Thread : AllStatic {
duke@435	235	private:
duke@435	236	// Note that for this class the layout changed between JDK1.2 and JDK1.3,
duke@435	237	// so we compute the offsets at startup rather than hard-wiring them.
duke@435	238	static int _name_offset;
duke@435	239	static int _group_offset;
duke@435	240	static int _contextClassLoader_offset;
duke@435	241	static int _inheritedAccessControlContext_offset;
duke@435	242	static int _priority_offset;
duke@435	243	static int _eetop_offset;
duke@435	244	static int _daemon_offset;
duke@435	245	static int _stillborn_offset;
duke@435	246	static int _stackSize_offset;
duke@435	247	static int _tid_offset;
duke@435	248	static int _thread_status_offset;
duke@435	249	static int _park_blocker_offset;
duke@435	250	static int _park_event_offset ;
duke@435	251
duke@435	252	static void compute_offsets();
duke@435	253
duke@435	254	public:
duke@435	255	// Instance creation
duke@435	256	static oop create();
duke@435	257	// Returns the JavaThread associated with the thread obj
duke@435	258	static JavaThread* thread(oop java_thread);
duke@435	259	// Set JavaThread for instance
duke@435	260	static void set_thread(oop java_thread, JavaThread* thread);
duke@435	261	// Name
duke@435	262	static typeArrayOop name(oop java_thread);
duke@435	263	static void set_name(oop java_thread, typeArrayOop name);
duke@435	264	// Priority
duke@435	265	static ThreadPriority priority(oop java_thread);
duke@435	266	static void set_priority(oop java_thread, ThreadPriority priority);
duke@435	267	// Thread group
duke@435	268	static oop threadGroup(oop java_thread);
duke@435	269	// Stillborn
duke@435	270	static bool is_stillborn(oop java_thread);
duke@435	271	static void set_stillborn(oop java_thread);
duke@435	272	// Alive (NOTE: this is not really a field, but provides the correct
duke@435	273	// definition without doing a Java call)
duke@435	274	static bool is_alive(oop java_thread);
duke@435	275	// Daemon
duke@435	276	static bool is_daemon(oop java_thread);
duke@435	277	static void set_daemon(oop java_thread);
duke@435	278	// Context ClassLoader
duke@435	279	static oop context_class_loader(oop java_thread);
duke@435	280	// Control context
duke@435	281	static oop inherited_access_control_context(oop java_thread);
duke@435	282	// Stack size hint
duke@435	283	static jlong stackSize(oop java_thread);
duke@435	284	// Thread ID
duke@435	285	static jlong thread_id(oop java_thread);
duke@435	286
duke@435	287	// Blocker object responsible for thread parking
duke@435	288	static oop park_blocker(oop java_thread);
duke@435	289
duke@435	290	// Pointer to type-stable park handler, encoded as jlong.
duke@435	291	// Should be set when apparently null
duke@435	292	// For details, see unsafe.cpp Unsafe_Unpark
duke@435	293	static jlong park_event(oop java_thread);
duke@435	294	static bool set_park_event(oop java_thread, jlong ptr);
duke@435	295
duke@435	296	// Java Thread Status for JVMTI and M&M use.
duke@435	297	// This thread status info is saved in threadStatus field of
duke@435	298	// java.lang.Thread java class.
duke@435	299	enum ThreadStatus {
duke@435	300	NEW = 0,
duke@435	301	RUNNABLE = JVMTI_THREAD_STATE_ALIVE + // runnable / running
duke@435	302	JVMTI_THREAD_STATE_RUNNABLE,
duke@435	303	SLEEPING = JVMTI_THREAD_STATE_ALIVE + // Thread.sleep()
duke@435	304	JVMTI_THREAD_STATE_WAITING +
duke@435	305	JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
duke@435	306	JVMTI_THREAD_STATE_SLEEPING,
duke@435	307	IN_OBJECT_WAIT = JVMTI_THREAD_STATE_ALIVE + // Object.wait()
duke@435	308	JVMTI_THREAD_STATE_WAITING +
duke@435	309	JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
duke@435	310	JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
duke@435	311	IN_OBJECT_WAIT_TIMED = JVMTI_THREAD_STATE_ALIVE + // Object.wait(long)
duke@435	312	JVMTI_THREAD_STATE_WAITING +
duke@435	313	JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
duke@435	314	JVMTI_THREAD_STATE_IN_OBJECT_WAIT,
duke@435	315	PARKED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park()
duke@435	316	JVMTI_THREAD_STATE_WAITING +
duke@435	317	JVMTI_THREAD_STATE_WAITING_INDEFINITELY +
duke@435	318	JVMTI_THREAD_STATE_PARKED,
duke@435	319	PARKED_TIMED = JVMTI_THREAD_STATE_ALIVE + // LockSupport.park(long)
duke@435	320	JVMTI_THREAD_STATE_WAITING +
duke@435	321	JVMTI_THREAD_STATE_WAITING_WITH_TIMEOUT +
duke@435	322	JVMTI_THREAD_STATE_PARKED,
duke@435	323	BLOCKED_ON_MONITOR_ENTER = JVMTI_THREAD_STATE_ALIVE + // (re-)entering a synchronization block
duke@435	324	JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER,
duke@435	325	TERMINATED = JVMTI_THREAD_STATE_TERMINATED
duke@435	326	};
duke@435	327	// Write thread status info to threadStatus field of java.lang.Thread.
duke@435	328	static void set_thread_status(oop java_thread_oop, ThreadStatus status);
duke@435	329	// Read thread status info from threadStatus field of java.lang.Thread.
duke@435	330	static ThreadStatus get_thread_status(oop java_thread_oop);
duke@435	331
duke@435	332	static const char* thread_status_name(oop java_thread_oop);
duke@435	333
duke@435	334	// Debugging
duke@435	335	friend class JavaClasses;
duke@435	336	};
duke@435	337
duke@435	338	// Interface to java.lang.ThreadGroup objects
duke@435	339
duke@435	340	class java_lang_ThreadGroup : AllStatic {
duke@435	341	private:
duke@435	342	static int _parent_offset;
duke@435	343	static int _name_offset;
duke@435	344	static int _threads_offset;
duke@435	345	static int _groups_offset;
duke@435	346	static int _maxPriority_offset;
duke@435	347	static int _destroyed_offset;
duke@435	348	static int _daemon_offset;
duke@435	349	static int _vmAllowSuspension_offset;
duke@435	350	static int _nthreads_offset;
duke@435	351	static int _ngroups_offset;
duke@435	352
duke@435	353	static void compute_offsets();
duke@435	354
duke@435	355	public:
duke@435	356	// parent ThreadGroup
duke@435	357	static oop parent(oop java_thread_group);
duke@435	358	// name
duke@435	359	static typeArrayOop name(oop java_thread_group);
duke@435	360	// ("name as oop" accessor is not necessary)
duke@435	361	// Number of threads in group
duke@435	362	static int nthreads(oop java_thread_group);
duke@435	363	// threads
duke@435	364	static objArrayOop threads(oop java_thread_group);
duke@435	365	// Number of threads in group
duke@435	366	static int ngroups(oop java_thread_group);
duke@435	367	// groups
duke@435	368	static objArrayOop groups(oop java_thread_group);
duke@435	369	// maxPriority in group
duke@435	370	static ThreadPriority maxPriority(oop java_thread_group);
duke@435	371	// Destroyed
duke@435	372	static bool is_destroyed(oop java_thread_group);
duke@435	373	// Daemon
duke@435	374	static bool is_daemon(oop java_thread_group);
duke@435	375	// vmAllowSuspension
duke@435	376	static bool is_vmAllowSuspension(oop java_thread_group);
duke@435	377	// Debugging
duke@435	378	friend class JavaClasses;
duke@435	379	};
duke@435	380
duke@435	381
duke@435	382
duke@435	383	// Interface to java.lang.Throwable objects
duke@435	384
duke@435	385	class java_lang_Throwable: AllStatic {
duke@435	386	friend class BacktraceBuilder;
duke@435	387
duke@435	388	private:
duke@435	389	// Offsets
duke@435	390	enum {
duke@435	391	hc_backtrace_offset = 0,
duke@435	392	hc_detailMessage_offset = 1,
duke@435	393	hc_cause_offset = 2, // New since 1.4
duke@435	394	hc_stackTrace_offset = 3 // New since 1.4
duke@435	395	};
duke@435	396	// Trace constants
duke@435	397	enum {
duke@435	398	trace_methods_offset = 0,
duke@435	399	trace_bcis_offset = 1,
duke@435	400	trace_next_offset = 2,
duke@435	401	trace_size = 3,
duke@435	402	trace_chunk_size = 32
duke@435	403	};
duke@435	404
duke@435	405	static int backtrace_offset;
duke@435	406	static int detailMessage_offset;
duke@435	407	static int cause_offset;
duke@435	408	static int stackTrace_offset;
duke@435	409
duke@435	410	// Printing
duke@435	411	static char* print_stack_element_to_buffer(methodOop method, int bci);
duke@435	412	static void print_to_stream(Handle stream, const char* str);
duke@435	413	// StackTrace (programmatic access, new since 1.4)
duke@435	414	static void clear_stacktrace(oop throwable);
duke@435	415	// No stack trace available
duke@435	416	static const char* no_stack_trace_message();
duke@435	417
duke@435	418	public:
duke@435	419	// Backtrace
duke@435	420	static oop backtrace(oop throwable);
duke@435	421	static void set_backtrace(oop throwable, oop value);
duke@435	422	// Needed by JVMTI to filter out this internal field.
duke@435	423	static int get_backtrace_offset() { return backtrace_offset;}
duke@435	424	static int get_detailMessage_offset() { return detailMessage_offset;}
duke@435	425	// Message
duke@435	426	static oop message(oop throwable);
duke@435	427	static oop message(Handle throwable);
duke@435	428	static void set_message(oop throwable, oop value);
duke@435	429	// Print stack trace stored in exception by call-back to Java
duke@435	430	// Note: this is no longer used in Merlin, but we still suppport
duke@435	431	// it for compatibility.
duke@435	432	static void print_stack_trace(oop throwable, oop print_stream);
duke@435	433	static void print_stack_element(Handle stream, methodOop method, int bci);
duke@435	434	static void print_stack_element(outputStream *st, methodOop method, int bci);
duke@435	435	static void print_stack_usage(Handle stream);
duke@435	436
duke@435	437	// Allocate space for backtrace (created but stack trace not filled in)
duke@435	438	static void allocate_backtrace(Handle throwable, TRAPS);
duke@435	439	// Fill in current stack trace for throwable with preallocated backtrace (no GC)
duke@435	440	static void fill_in_stack_trace_of_preallocated_backtrace(Handle throwable);
duke@435	441
duke@435	442	// Fill in current stack trace, can cause GC
coleenp@2804	443	static void fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS);
coleenp@2804	444	static void fill_in_stack_trace(Handle throwable, methodHandle method = methodHandle());
duke@435	445	// Programmatic access to stack trace
duke@435	446	static oop get_stack_trace_element(oop throwable, int index, TRAPS);
duke@435	447	static int get_stack_trace_depth(oop throwable, TRAPS);
duke@435	448	// Printing
duke@435	449	static void print(oop throwable, outputStream* st);
duke@435	450	static void print(Handle throwable, outputStream* st);
duke@435	451	static void print_stack_trace(oop throwable, outputStream* st);
duke@435	452	// Debugging
duke@435	453	friend class JavaClasses;
duke@435	454	};
duke@435	455
duke@435	456
duke@435	457	// Interface to java.lang.reflect.AccessibleObject objects
duke@435	458
duke@435	459	class java_lang_reflect_AccessibleObject: AllStatic {
duke@435	460	private:
duke@435	461	// Note that to reduce dependencies on the JDK we compute these
duke@435	462	// offsets at run-time.
duke@435	463	static int override_offset;
duke@435	464
duke@435	465	static void compute_offsets();
duke@435	466
duke@435	467	public:
duke@435	468	// Accessors
duke@435	469	static jboolean override(oop reflect);
duke@435	470	static void set_override(oop reflect, jboolean value);
duke@435	471
duke@435	472	// Debugging
duke@435	473	friend class JavaClasses;
duke@435	474	};
duke@435	475
duke@435	476
duke@435	477	// Interface to java.lang.reflect.Method objects
duke@435	478
duke@435	479	class java_lang_reflect_Method : public java_lang_reflect_AccessibleObject {
duke@435	480	private:
duke@435	481	// Note that to reduce dependencies on the JDK we compute these
duke@435	482	// offsets at run-time.
duke@435	483	static int clazz_offset;
duke@435	484	static int name_offset;
duke@435	485	static int returnType_offset;
duke@435	486	static int parameterTypes_offset;
duke@435	487	static int exceptionTypes_offset;
duke@435	488	static int slot_offset;
duke@435	489	static int modifiers_offset;
duke@435	490	static int signature_offset;
duke@435	491	static int annotations_offset;
duke@435	492	static int parameter_annotations_offset;
duke@435	493	static int annotation_default_offset;
duke@435	494
duke@435	495	static void compute_offsets();
duke@435	496
duke@435	497	public:
duke@435	498	// Allocation
duke@435	499	static Handle create(TRAPS);
duke@435	500
duke@435	501	// Accessors
duke@435	502	static oop clazz(oop reflect);
duke@435	503	static void set_clazz(oop reflect, oop value);
duke@435	504
duke@435	505	static oop name(oop method);
duke@435	506	static void set_name(oop method, oop value);
duke@435	507
duke@435	508	static oop return_type(oop method);
duke@435	509	static void set_return_type(oop method, oop value);
duke@435	510
duke@435	511	static oop parameter_types(oop method);
duke@435	512	static void set_parameter_types(oop method, oop value);
duke@435	513
duke@435	514	static oop exception_types(oop method);
duke@435	515	static void set_exception_types(oop method, oop value);
duke@435	516
duke@435	517	static int slot(oop reflect);
duke@435	518	static void set_slot(oop reflect, int value);
duke@435	519
duke@435	520	static int modifiers(oop method);
duke@435	521	static void set_modifiers(oop method, int value);
duke@435	522
duke@435	523	static bool has_signature_field();
duke@435	524	static oop signature(oop method);
duke@435	525	static void set_signature(oop method, oop value);
duke@435	526
duke@435	527	static bool has_annotations_field();
duke@435	528	static oop annotations(oop method);
duke@435	529	static void set_annotations(oop method, oop value);
duke@435	530
duke@435	531	static bool has_parameter_annotations_field();
duke@435	532	static oop parameter_annotations(oop method);
duke@435	533	static void set_parameter_annotations(oop method, oop value);
duke@435	534
duke@435	535	static bool has_annotation_default_field();
duke@435	536	static oop annotation_default(oop method);
duke@435	537	static void set_annotation_default(oop method, oop value);
duke@435	538
duke@435	539	// Debugging
duke@435	540	friend class JavaClasses;
duke@435	541	};
duke@435	542
duke@435	543
duke@435	544	// Interface to java.lang.reflect.Constructor objects
duke@435	545
duke@435	546	class java_lang_reflect_Constructor : public java_lang_reflect_AccessibleObject {
duke@435	547	private:
duke@435	548	// Note that to reduce dependencies on the JDK we compute these
duke@435	549	// offsets at run-time.
duke@435	550	static int clazz_offset;
duke@435	551	static int parameterTypes_offset;
duke@435	552	static int exceptionTypes_offset;
duke@435	553	static int slot_offset;
duke@435	554	static int modifiers_offset;
duke@435	555	static int signature_offset;
duke@435	556	static int annotations_offset;
duke@435	557	static int parameter_annotations_offset;
duke@435	558
duke@435	559	static void compute_offsets();
duke@435	560
duke@435	561	public:
duke@435	562	// Allocation
duke@435	563	static Handle create(TRAPS);
duke@435	564
duke@435	565	// Accessors
duke@435	566	static oop clazz(oop reflect);
duke@435	567	static void set_clazz(oop reflect, oop value);
duke@435	568
duke@435	569	static oop parameter_types(oop constructor);
duke@435	570	static void set_parameter_types(oop constructor, oop value);
duke@435	571
duke@435	572	static oop exception_types(oop constructor);
duke@435	573	static void set_exception_types(oop constructor, oop value);
duke@435	574
duke@435	575	static int slot(oop reflect);
duke@435	576	static void set_slot(oop reflect, int value);
duke@435	577
duke@435	578	static int modifiers(oop constructor);
duke@435	579	static void set_modifiers(oop constructor, int value);
duke@435	580
duke@435	581	static bool has_signature_field();
duke@435	582	static oop signature(oop constructor);
duke@435	583	static void set_signature(oop constructor, oop value);
duke@435	584
duke@435	585	static bool has_annotations_field();
duke@435	586	static oop annotations(oop constructor);
duke@435	587	static void set_annotations(oop constructor, oop value);
duke@435	588
duke@435	589	static bool has_parameter_annotations_field();
duke@435	590	static oop parameter_annotations(oop method);
duke@435	591	static void set_parameter_annotations(oop method, oop value);
duke@435	592
duke@435	593	// Debugging
duke@435	594	friend class JavaClasses;
duke@435	595	};
duke@435	596
duke@435	597
duke@435	598	// Interface to java.lang.reflect.Field objects
duke@435	599
duke@435	600	class java_lang_reflect_Field : public java_lang_reflect_AccessibleObject {
duke@435	601	private:
duke@435	602	// Note that to reduce dependencies on the JDK we compute these
duke@435	603	// offsets at run-time.
duke@435	604	static int clazz_offset;
duke@435	605	static int name_offset;
duke@435	606	static int type_offset;
duke@435	607	static int slot_offset;
duke@435	608	static int modifiers_offset;
duke@435	609	static int signature_offset;
duke@435	610	static int annotations_offset;
duke@435	611
duke@435	612	static void compute_offsets();
duke@435	613
duke@435	614	public:
duke@435	615	// Allocation
duke@435	616	static Handle create(TRAPS);
duke@435	617
duke@435	618	// Accessors
duke@435	619	static oop clazz(oop reflect);
duke@435	620	static void set_clazz(oop reflect, oop value);
duke@435	621
duke@435	622	static oop name(oop field);
duke@435	623	static void set_name(oop field, oop value);
duke@435	624
duke@435	625	static oop type(oop field);
duke@435	626	static void set_type(oop field, oop value);
duke@435	627
duke@435	628	static int slot(oop reflect);
duke@435	629	static void set_slot(oop reflect, int value);
duke@435	630
duke@435	631	static int modifiers(oop field);
duke@435	632	static void set_modifiers(oop field, int value);
duke@435	633
duke@435	634	static bool has_signature_field();
duke@435	635	static oop signature(oop constructor);
duke@435	636	static void set_signature(oop constructor, oop value);
duke@435	637
duke@435	638	static bool has_annotations_field();
duke@435	639	static oop annotations(oop constructor);
duke@435	640	static void set_annotations(oop constructor, oop value);
duke@435	641
duke@435	642	static bool has_parameter_annotations_field();
duke@435	643	static oop parameter_annotations(oop method);
duke@435	644	static void set_parameter_annotations(oop method, oop value);
duke@435	645
duke@435	646	static bool has_annotation_default_field();
duke@435	647	static oop annotation_default(oop method);
duke@435	648	static void set_annotation_default(oop method, oop value);
duke@435	649
duke@435	650	// Debugging
duke@435	651	friend class JavaClasses;
duke@435	652	};
duke@435	653
duke@435	654	// Interface to sun.reflect.ConstantPool objects
duke@435	655	class sun_reflect_ConstantPool {
duke@435	656	private:
duke@435	657	// Note that to reduce dependencies on the JDK we compute these
duke@435	658	// offsets at run-time.
duke@435	659	static int _cp_oop_offset;
duke@435	660
duke@435	661	static void compute_offsets();
duke@435	662
duke@435	663	public:
duke@435	664	// Allocation
duke@435	665	static Handle create(TRAPS);
duke@435	666
duke@435	667	// Accessors
duke@435	668	static oop cp_oop(oop reflect);
duke@435	669	static void set_cp_oop(oop reflect, oop value);
duke@435	670	static int cp_oop_offset() {
duke@435	671	return _cp_oop_offset;
duke@435	672	}
duke@435	673
duke@435	674	// Debugging
duke@435	675	friend class JavaClasses;
duke@435	676	};
duke@435	677
duke@435	678	// Interface to sun.reflect.UnsafeStaticFieldAccessorImpl objects
duke@435	679	class sun_reflect_UnsafeStaticFieldAccessorImpl {
duke@435	680	private:
duke@435	681	static int _base_offset;
duke@435	682	static void compute_offsets();
duke@435	683
duke@435	684	public:
duke@435	685	static int base_offset() {
duke@435	686	return _base_offset;
duke@435	687	}
duke@435	688
duke@435	689	// Debugging
duke@435	690	friend class JavaClasses;
duke@435	691	};
duke@435	692
duke@435	693	// Interface to java.lang primitive type boxing objects:
duke@435	694	// - java.lang.Boolean
duke@435	695	// - java.lang.Character
duke@435	696	// - java.lang.Float
duke@435	697	// - java.lang.Double
duke@435	698	// - java.lang.Byte
duke@435	699	// - java.lang.Short
duke@435	700	// - java.lang.Integer
duke@435	701	// - java.lang.Long
duke@435	702
duke@435	703	// This could be separated out into 8 individual classes.
duke@435	704
duke@435	705	class java_lang_boxing_object: AllStatic {
duke@435	706	private:
duke@435	707	enum {
duke@435	708	hc_value_offset = 0
duke@435	709	};
duke@435	710	static int value_offset;
kvn@600	711	static int long_value_offset;
duke@435	712
jrose@567	713	static oop initialize_and_allocate(BasicType type, TRAPS);
duke@435	714	public:
duke@435	715	// Allocation. Returns a boxed value, or NULL for invalid type.
duke@435	716	static oop create(BasicType type, jvalue* value, TRAPS);
duke@435	717	// Accessors. Returns the basic type being boxed, or T_ILLEGAL for invalid oop.
duke@435	718	static BasicType get_value(oop box, jvalue* value);
duke@435	719	static BasicType set_value(oop box, jvalue* value);
jrose@567	720	static BasicType basic_type(oop box);
jrose@567	721	static bool is_instance(oop box) { return basic_type(box) != T_ILLEGAL; }
jrose@567	722	static bool is_instance(oop box, BasicType type) { return basic_type(box) == type; }
jrose@1100	723	static void print(oop box, outputStream* st) { jvalue value; print(get_value(box, &value), &value, st); }
jrose@1100	724	static void print(BasicType type, jvalue* value, outputStream* st);
duke@435	725
kvn@600	726	static int value_offset_in_bytes(BasicType type) {
kvn@600	727	return ( type == T_LONG || type == T_DOUBLE ) ? long_value_offset :
kvn@600	728	value_offset;
kvn@600	729	}
duke@435	730
duke@435	731	// Debugging
duke@435	732	friend class JavaClasses;
duke@435	733	};
duke@435	734
duke@435	735
duke@435	736
duke@435	737	// Interface to java.lang.ref.Reference objects
duke@435	738
duke@435	739	class java_lang_ref_Reference: AllStatic {
duke@435	740	public:
duke@435	741	enum {
duke@435	742	hc_referent_offset = 0,
duke@435	743	hc_queue_offset = 1,
duke@435	744	hc_next_offset = 2,
duke@435	745	hc_discovered_offset = 3 // Is not last, see SoftRefs.
duke@435	746	};
duke@435	747	enum {
duke@435	748	hc_static_lock_offset = 0,
duke@435	749	hc_static_pending_offset = 1
duke@435	750	};
duke@435	751
duke@435	752	static int referent_offset;
duke@435	753	static int queue_offset;
duke@435	754	static int next_offset;
duke@435	755	static int discovered_offset;
duke@435	756	static int static_lock_offset;
duke@435	757	static int static_pending_offset;
duke@435	758	static int number_of_fake_oop_fields;
duke@435	759
duke@435	760	// Accessors
coleenp@548	761	static oop referent(oop ref) {
coleenp@548	762	return ref->obj_field(referent_offset);
coleenp@548	763	}
coleenp@548	764	static void set_referent(oop ref, oop value) {
coleenp@548	765	ref->obj_field_put(referent_offset, value);
coleenp@548	766	}
coleenp@548	767	static void set_referent_raw(oop ref, oop value) {
coleenp@548	768	ref->obj_field_raw_put(referent_offset, value);
coleenp@548	769	}
coleenp@548	770	static HeapWord* referent_addr(oop ref) {
coleenp@548	771	return ref->obj_field_addr<HeapWord>(referent_offset);
coleenp@548	772	}
coleenp@548	773	static oop next(oop ref) {
coleenp@548	774	return ref->obj_field(next_offset);
coleenp@548	775	}
coleenp@548	776	static void set_next(oop ref, oop value) {
coleenp@548	777	ref->obj_field_put(next_offset, value);
coleenp@548	778	}
coleenp@548	779	static void set_next_raw(oop ref, oop value) {
coleenp@548	780	ref->obj_field_raw_put(next_offset, value);
coleenp@548	781	}
coleenp@548	782	static HeapWord* next_addr(oop ref) {
coleenp@548	783	return ref->obj_field_addr<HeapWord>(next_offset);
coleenp@548	784	}
coleenp@548	785	static oop discovered(oop ref) {
coleenp@548	786	return ref->obj_field(discovered_offset);
coleenp@548	787	}
coleenp@548	788	static void set_discovered(oop ref, oop value) {
coleenp@548	789	ref->obj_field_put(discovered_offset, value);
coleenp@548	790	}
coleenp@548	791	static void set_discovered_raw(oop ref, oop value) {
coleenp@548	792	ref->obj_field_raw_put(discovered_offset, value);
coleenp@548	793	}
coleenp@548	794	static HeapWord* discovered_addr(oop ref) {
coleenp@548	795	return ref->obj_field_addr<HeapWord>(discovered_offset);
coleenp@548	796	}
coleenp@548	797	// Accessors for statics
coleenp@548	798	static oop pending_list_lock();
coleenp@548	799	static oop pending_list();
duke@435	800
coleenp@548	801	static HeapWord* pending_list_addr();
duke@435	802	};
duke@435	803
duke@435	804
duke@435	805	// Interface to java.lang.ref.SoftReference objects
duke@435	806
duke@435	807	class java_lang_ref_SoftReference: public java_lang_ref_Reference {
duke@435	808	public:
duke@435	809	enum {
duke@435	810	// The timestamp is a long field and may need to be adjusted for alignment.
kvn@600	811	hc_timestamp_offset = hc_discovered_offset + 1
duke@435	812	};
duke@435	813	enum {
duke@435	814	hc_static_clock_offset = 0
duke@435	815	};
duke@435	816
duke@435	817	static int timestamp_offset;
duke@435	818	static int static_clock_offset;
duke@435	819
duke@435	820	// Accessors
duke@435	821	static jlong timestamp(oop ref);
duke@435	822
duke@435	823	// Accessors for statics
duke@435	824	static jlong clock();
duke@435	825	static void set_clock(jlong value);
duke@435	826	};
duke@435	827
duke@435	828
jrose@2639	829	// Interface to java.lang.invoke.MethodHandle objects
jrose@1145	830
jrose@1145	831	class MethodHandleEntry;
jrose@1145	832
jrose@2639	833	class java_lang_invoke_MethodHandle: AllStatic {
jrose@1145	834	friend class JavaClasses;
jrose@1145	835
jrose@1145	836	private:
jrose@1145	837	static int _vmentry_offset; // assembly code trampoline for MH
jrose@1145	838	static int _vmtarget_offset; // class-specific target reference
jrose@1145	839	static int _type_offset; // the MethodType of this MH
jrose@1145	840	static int _vmslots_offset; // OPTIONAL hoisted type.form.vmslots
jrose@1145	841
jrose@1145	842	static void compute_offsets();
jrose@1145	843
jrose@1145	844	public:
jrose@1145	845	// Accessors
jrose@1145	846	static oop type(oop mh);
jrose@1145	847	static void set_type(oop mh, oop mtype);
jrose@1145	848
jrose@1145	849	static oop vmtarget(oop mh);
jrose@1145	850	static void set_vmtarget(oop mh, oop target);
jrose@1145	851
jrose@1145	852	static MethodHandleEntry* vmentry(oop mh);
jrose@1145	853	static void set_vmentry(oop mh, MethodHandleEntry* data);
jrose@1145	854
jrose@1145	855	static int vmslots(oop mh);
jrose@1145	856	static void init_vmslots(oop mh);
jrose@1145	857	static int compute_vmslots(oop mh);
jrose@1145	858
jrose@1145	859	// Testers
jrose@1145	860	static bool is_subclass(klassOop klass) {
jrose@1145	861	return Klass::cast(klass)->is_subclass_of(SystemDictionary::MethodHandle_klass());
jrose@1145	862	}
jrose@1145	863	static bool is_instance(oop obj) {
jrose@1145	864	return obj != NULL && is_subclass(obj->klass());
jrose@1145	865	}
jrose@1145	866
jrose@1145	867	// Accessors for code generation:
jrose@1145	868	static int type_offset_in_bytes() { return _type_offset; }
jrose@1145	869	static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
jrose@1145	870	static int vmentry_offset_in_bytes() { return _vmentry_offset; }
jrose@1145	871	static int vmslots_offset_in_bytes() { return _vmslots_offset; }
jrose@1145	872	};
jrose@1145	873
jrose@2639	874	class java_lang_invoke_DirectMethodHandle: public java_lang_invoke_MethodHandle {
jrose@1145	875	friend class JavaClasses;
jrose@1145	876
jrose@1145	877	private:
jrose@1145	878	// _vmtarget_offset; // method or class or interface
jrose@1145	879	static int _vmindex_offset; // negative or vtable idx or itable idx
jrose@1145	880	static void compute_offsets();
jrose@1145	881
jrose@1145	882	public:
jrose@1145	883	// Accessors
jrose@1145	884	static int vmindex(oop mh);
jrose@1145	885	static void set_vmindex(oop mh, int index);
jrose@1145	886
jrose@1145	887	// Testers
jrose@1145	888	static bool is_subclass(klassOop klass) {
jrose@1145	889	return Klass::cast(klass)->is_subclass_of(SystemDictionary::DirectMethodHandle_klass());
jrose@1145	890	}
jrose@1145	891	static bool is_instance(oop obj) {
jrose@1145	892	return obj != NULL && is_subclass(obj->klass());
jrose@1145	893	}
jrose@1145	894
jrose@1145	895	// Accessors for code generation:
jrose@1145	896	static int vmindex_offset_in_bytes() { return _vmindex_offset; }
jrose@1145	897	};
jrose@1145	898
jrose@2639	899	class java_lang_invoke_BoundMethodHandle: public java_lang_invoke_MethodHandle {
jrose@1145	900	friend class JavaClasses;
jrose@1145	901
jrose@1145	902	private:
jrose@1145	903	static int _argument_offset; // argument value bound into this MH
jrose@1145	904	static int _vmargslot_offset; // relevant argument slot (<= vmslots)
jrose@1145	905	static void compute_offsets();
jrose@1145	906
jrose@1145	907	public:
jrose@1145	908	static oop argument(oop mh);
jrose@1145	909	static void set_argument(oop mh, oop ref);
jrose@1145	910
jrose@1145	911	static jint vmargslot(oop mh);
jrose@1145	912	static void set_vmargslot(oop mh, jint slot);
jrose@1145	913
jrose@1145	914	// Testers
jrose@1145	915	static bool is_subclass(klassOop klass) {
jrose@1145	916	return Klass::cast(klass)->is_subclass_of(SystemDictionary::BoundMethodHandle_klass());
jrose@1145	917	}
jrose@1145	918	static bool is_instance(oop obj) {
jrose@1145	919	return obj != NULL && is_subclass(obj->klass());
jrose@1145	920	}
jrose@1145	921
jrose@1145	922	static int argument_offset_in_bytes() { return _argument_offset; }
jrose@1145	923	static int vmargslot_offset_in_bytes() { return _vmargslot_offset; }
jrose@1145	924	};
jrose@1145	925
jrose@2639	926	class java_lang_invoke_AdapterMethodHandle: public java_lang_invoke_BoundMethodHandle {
jrose@1145	927	friend class JavaClasses;
jrose@1145	928
jrose@1145	929	private:
jrose@1145	930	static int _conversion_offset; // type of conversion to apply
jrose@1145	931	static void compute_offsets();
jrose@1145	932
jrose@1145	933	public:
jrose@1145	934	static int conversion(oop mh);
jrose@1145	935	static void set_conversion(oop mh, int conv);
jrose@1145	936
jrose@1145	937	// Testers
jrose@1145	938	static bool is_subclass(klassOop klass) {
jrose@1145	939	return Klass::cast(klass)->is_subclass_of(SystemDictionary::AdapterMethodHandle_klass());
jrose@1145	940	}
jrose@1145	941	static bool is_instance(oop obj) {
jrose@1145	942	return obj != NULL && is_subclass(obj->klass());
jrose@1145	943	}
jrose@1145	944
jrose@1145	945	// Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
jrose@1145	946	enum {
jrose@1145	947	OP_RETYPE_ONLY = 0x0, // no argument changes; straight retype
jrose@1474	948	OP_RETYPE_RAW = 0x1, // straight retype, trusted (void->int, Object->T)
jrose@1474	949	OP_CHECK_CAST = 0x2, // ref-to-ref conversion; requires a Class argument
jrose@1474	950	OP_PRIM_TO_PRIM = 0x3, // converts from one primitive to another
jrose@1474	951	OP_REF_TO_PRIM = 0x4, // unboxes a wrapper to produce a primitive
never@2895	952	OP_PRIM_TO_REF = 0x5, // boxes a primitive into a wrapper
jrose@1474	953	OP_SWAP_ARGS = 0x6, // swap arguments (vminfo is 2nd arg)
jrose@1474	954	OP_ROT_ARGS = 0x7, // rotate arguments (vminfo is displaced arg)
jrose@1474	955	OP_DUP_ARGS = 0x8, // duplicates one or more arguments (at TOS)
jrose@1474	956	OP_DROP_ARGS = 0x9, // remove one or more argument slots
never@2895	957	OP_COLLECT_ARGS = 0xA, // combine arguments using an auxiliary function
jrose@1474	958	OP_SPREAD_ARGS = 0xB, // expand in place a varargs array (of known size)
never@2895	959	OP_FOLD_ARGS = 0xC, // combine but do not remove arguments; prepend result
never@2895	960	//OP_UNUSED_13 = 0xD, // unused code, perhaps for reified argument lists
jrose@1474	961	CONV_OP_LIMIT = 0xE, // limit of CONV_OP enumeration
jrose@1145	962
jrose@1145	963	CONV_OP_MASK = 0xF00, // this nybble contains the conversion op field
never@2895	964	CONV_TYPE_MASK = 0x0F, // fits T_ADDRESS and below
jrose@1145	965	CONV_VMINFO_MASK = 0x0FF, // LSB is reserved for JVM use
jrose@1145	966	CONV_VMINFO_SHIFT = 0, // position of bits in CONV_VMINFO_MASK
jrose@1145	967	CONV_OP_SHIFT = 8, // position of bits in CONV_OP_MASK
jrose@1145	968	CONV_DEST_TYPE_SHIFT = 12, // byte 2 has the adapter BasicType (if needed)
jrose@1145	969	CONV_SRC_TYPE_SHIFT = 16, // byte 2 has the source BasicType (if needed)
jrose@1145	970	CONV_STACK_MOVE_SHIFT = 20, // high 12 bits give signed SP change
jrose@1145	971	CONV_STACK_MOVE_MASK = (1 << (32 - CONV_STACK_MOVE_SHIFT)) - 1
jrose@1145	972	};
jrose@1145	973
jrose@1145	974	static int conversion_offset_in_bytes() { return _conversion_offset; }
jrose@1145	975	};
jrose@1145	976
jrose@1145	977
jrose@2639	978	// Interface to java.lang.invoke.MemberName objects
jrose@1145	979	// (These are a private interface for Java code to query the class hierarchy.)
jrose@1145	980
jrose@2639	981	class java_lang_invoke_MemberName: AllStatic {
jrose@1145	982	friend class JavaClasses;
jrose@1145	983
jrose@1145	984	private:
jrose@2639	985	// From java.lang.invoke.MemberName:
jrose@1145	986	// private Class<?> clazz; // class in which the method is defined
jrose@1145	987	// private String name; // may be null if not yet materialized
jrose@1145	988	// private Object type; // may be null if not yet materialized
jrose@1145	989	// private int flags; // modifier bits; see reflect.Modifier
jrose@1145	990	// private Object vmtarget; // VM-specific target value
jrose@1145	991	// private int vmindex; // method index within class or interface
jrose@1145	992	static int _clazz_offset;
jrose@1145	993	static int _name_offset;
jrose@1145	994	static int _type_offset;
jrose@1145	995	static int _flags_offset;
jrose@1145	996	static int _vmtarget_offset;
jrose@1145	997	static int _vmindex_offset;
jrose@1145	998
jrose@1145	999	static void compute_offsets();
jrose@1145	1000
jrose@1145	1001	public:
jrose@1145	1002	// Accessors
jrose@1145	1003	static oop clazz(oop mname);
jrose@1145	1004	static void set_clazz(oop mname, oop clazz);
jrose@1145	1005
jrose@1145	1006	static oop type(oop mname);
jrose@1145	1007	static void set_type(oop mname, oop type);
jrose@1145	1008
jrose@1145	1009	static oop name(oop mname);
jrose@1145	1010	static void set_name(oop mname, oop name);
jrose@1145	1011
jrose@1145	1012	static int flags(oop mname);
jrose@1145	1013	static void set_flags(oop mname, int flags);
jrose@1145	1014
jrose@1145	1015	static int modifiers(oop mname) { return (u2) flags(mname); }
jrose@1145	1016	static void set_modifiers(oop mname, int mods)
jrose@1145	1017	{ set_flags(mname, (flags(mname) &~ (u2)-1) | (u2)mods); }
jrose@1145	1018
jrose@1145	1019	static oop vmtarget(oop mname);
jrose@1145	1020	static void set_vmtarget(oop mname, oop target);
jrose@1145	1021
jrose@1145	1022	static int vmindex(oop mname);
jrose@1145	1023	static void set_vmindex(oop mname, int index);
jrose@1145	1024
jrose@1145	1025	// Testers
jrose@1145	1026	static bool is_subclass(klassOop klass) {
jrose@1145	1027	return Klass::cast(klass)->is_subclass_of(SystemDictionary::MemberName_klass());
jrose@1145	1028	}
jrose@1145	1029	static bool is_instance(oop obj) {
jrose@1145	1030	return obj != NULL && is_subclass(obj->klass());
jrose@1145	1031	}
jrose@1145	1032
jrose@1145	1033	// Relevant integer codes (keep these in synch. with MethodHandleNatives.Constants):
jrose@1145	1034	enum {
jrose@1145	1035	MN_IS_METHOD = 0x00010000, // method (not constructor)
jrose@1145	1036	MN_IS_CONSTRUCTOR = 0x00020000, // constructor
jrose@1145	1037	MN_IS_FIELD = 0x00040000, // field
jrose@1145	1038	MN_IS_TYPE = 0x00080000, // nested type
jrose@1145	1039	MN_SEARCH_SUPERCLASSES = 0x00100000, // for MHN.getMembers
jrose@1145	1040	MN_SEARCH_INTERFACES = 0x00200000, // for MHN.getMembers
jrose@1145	1041	VM_INDEX_UNINITIALIZED = -99
jrose@1145	1042	};
jrose@1145	1043
jrose@1145	1044	// Accessors for code generation:
jrose@1145	1045	static int clazz_offset_in_bytes() { return _clazz_offset; }
jrose@1145	1046	static int type_offset_in_bytes() { return _type_offset; }
jrose@1145	1047	static int name_offset_in_bytes() { return _name_offset; }
jrose@1145	1048	static int flags_offset_in_bytes() { return _flags_offset; }
jrose@1145	1049	static int vmtarget_offset_in_bytes() { return _vmtarget_offset; }
jrose@1145	1050	static int vmindex_offset_in_bytes() { return _vmindex_offset; }
jrose@1145	1051	};
jrose@1145	1052
jrose@1145	1053
jrose@2639	1054	// Interface to java.lang.invoke.MethodType objects
jrose@1145	1055
jrose@2639	1056	class java_lang_invoke_MethodType: AllStatic {
jrose@1145	1057	friend class JavaClasses;
jrose@1145	1058
jrose@1145	1059	private:
jrose@1145	1060	static int _rtype_offset;
jrose@1145	1061	static int _ptypes_offset;
jrose@1145	1062	static int _form_offset;
jrose@1145	1063
jrose@1145	1064	static void compute_offsets();
jrose@1145	1065
jrose@1145	1066	public:
jrose@1145	1067	// Accessors
jrose@1145	1068	static oop rtype(oop mt);
jrose@1145	1069	static objArrayOop ptypes(oop mt);
jrose@1145	1070	static oop form(oop mt);
jrose@1145	1071
jrose@1145	1072	static oop ptype(oop mt, int index);
twisti@1568	1073	static int ptype_count(oop mt);
jrose@1145	1074
coleenp@2497	1075	static Symbol* as_signature(oop mt, bool intern_if_not_found, TRAPS);
jrose@1145	1076	static void print_signature(oop mt, outputStream* st);
jrose@1145	1077
jrose@1145	1078	static bool is_instance(oop obj) {
jrose@1145	1079	return obj != NULL && obj->klass() == SystemDictionary::MethodType_klass();
jrose@1145	1080	}
jrose@1145	1081
jrose@1145	1082	// Accessors for code generation:
jrose@1145	1083	static int rtype_offset_in_bytes() { return _rtype_offset; }
jrose@1145	1084	static int ptypes_offset_in_bytes() { return _ptypes_offset; }
jrose@1145	1085	static int form_offset_in_bytes() { return _form_offset; }
jrose@1145	1086	};
jrose@1145	1087
jrose@2639	1088	class java_lang_invoke_MethodTypeForm: AllStatic {
jrose@1145	1089	friend class JavaClasses;
jrose@1145	1090
jrose@1145	1091	private:
jrose@1145	1092	static int _vmslots_offset; // number of argument slots needed
never@2895	1093	static int _vmlayout_offset; // object describing internal calling sequence
jrose@1145	1094	static int _erasedType_offset; // erasedType = canonical MethodType
jrose@2148	1095	static int _genericInvoker_offset; // genericInvoker = adapter for invokeGeneric
jrose@1145	1096
jrose@1145	1097	static void compute_offsets();
jrose@1145	1098
jrose@1145	1099	public:
jrose@1145	1100	// Accessors
jrose@1145	1101	static int vmslots(oop mtform);
jrose@1145	1102	static oop erasedType(oop mtform);
jrose@2148	1103	static oop genericInvoker(oop mtform);
jrose@1145	1104
never@2895	1105	static oop vmlayout(oop mtform);
never@2895	1106	static oop init_vmlayout(oop mtform, oop cookie);
never@2895	1107
jrose@1145	1108	// Accessors for code generation:
jrose@1145	1109	static int vmslots_offset_in_bytes() { return _vmslots_offset; }
never@2895	1110	static int vmlayout_offset_in_bytes() { return _vmlayout_offset; }
jrose@1145	1111	static int erasedType_offset_in_bytes() { return _erasedType_offset; }
jrose@2148	1112	static int genericInvoker_offset_in_bytes() { return _genericInvoker_offset; }
jrose@1145	1113	};
jrose@1145	1114
jrose@1145	1115
jrose@2639	1116	// Interface to java.lang.invoke.CallSite objects
jrose@1161	1117
jrose@2639	1118	class java_lang_invoke_CallSite: AllStatic {
jrose@1161	1119	friend class JavaClasses;
jrose@1161	1120
jrose@1161	1121	private:
jrose@1161	1122	static int _target_offset;
jrose@1862	1123	static int _caller_method_offset;
jrose@1862	1124	static int _caller_bci_offset;
jrose@1161	1125
jrose@1161	1126	static void compute_offsets();
jrose@1161	1127
jrose@1161	1128	public:
jrose@1161	1129	// Accessors
jrose@1161	1130	static oop target(oop site);
jrose@1161	1131	static void set_target(oop site, oop target);
jrose@1161	1132
jrose@1862	1133	static oop caller_method(oop site);
jrose@1862	1134	static void set_caller_method(oop site, oop ref);
jrose@1862	1135
jrose@1862	1136	static jint caller_bci(oop site);
jrose@1862	1137	static void set_caller_bci(oop site, jint bci);
jrose@1161	1138
twisti@1570	1139	// Testers
twisti@1570	1140	static bool is_subclass(klassOop klass) {
twisti@1570	1141	return Klass::cast(klass)->is_subclass_of(SystemDictionary::CallSite_klass());
twisti@1570	1142	}
twisti@1570	1143	static bool is_instance(oop obj) {
twisti@1570	1144	return obj != NULL && is_subclass(obj->klass());
twisti@1570	1145	}
twisti@1570	1146
jrose@1161	1147	// Accessors for code generation:
jrose@1161	1148	static int target_offset_in_bytes() { return _target_offset; }
jrose@1862	1149	static int caller_method_offset_in_bytes() { return _caller_method_offset; }
jrose@1862	1150	static int caller_bci_offset_in_bytes() { return _caller_bci_offset; }
jrose@1161	1151	};
jrose@1145	1152
jrose@1145	1153
duke@435	1154	// Interface to java.security.AccessControlContext objects
duke@435	1155
duke@435	1156	class java_security_AccessControlContext: AllStatic {
duke@435	1157	private:
duke@435	1158	// Note that for this class the layout changed between JDK1.2 and JDK1.3,
duke@435	1159	// so we compute the offsets at startup rather than hard-wiring them.
duke@435	1160	static int _context_offset;
duke@435	1161	static int _privilegedContext_offset;
duke@435	1162	static int _isPrivileged_offset;
duke@435	1163
duke@435	1164	static void compute_offsets();
duke@435	1165	public:
duke@435	1166	static oop create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS);
duke@435	1167
duke@435	1168	// Debugging/initialization
duke@435	1169	friend class JavaClasses;
duke@435	1170	};
duke@435	1171
duke@435	1172
duke@435	1173	// Interface to java.lang.ClassLoader objects
duke@435	1174
duke@435	1175	class java_lang_ClassLoader : AllStatic {
duke@435	1176	private:
duke@435	1177	enum {
duke@435	1178	hc_parent_offset = 0
duke@435	1179	};
duke@435	1180
duke@435	1181	static int parent_offset;
duke@435	1182
duke@435	1183	public:
duke@435	1184	static oop parent(oop loader);
duke@435	1185
duke@435	1186	static bool is_trusted_loader(oop loader);
duke@435	1187
duke@435	1188	// Fix for 4474172
duke@435	1189	static oop non_reflection_class_loader(oop loader);
duke@435	1190
duke@435	1191	// Debugging
duke@435	1192	friend class JavaClasses;
duke@435	1193	};
duke@435	1194
duke@435	1195
duke@435	1196	// Interface to java.lang.System objects
duke@435	1197
duke@435	1198	class java_lang_System : AllStatic {
duke@435	1199	private:
duke@435	1200	enum {
duke@435	1201	hc_static_in_offset = 0,
duke@435	1202	hc_static_out_offset = 1,
duke@435	1203	hc_static_err_offset = 2
duke@435	1204	};
duke@435	1205
duke@435	1206	static int static_in_offset;
duke@435	1207	static int static_out_offset;
duke@435	1208	static int static_err_offset;
duke@435	1209
duke@435	1210	public:
duke@435	1211	static int in_offset_in_bytes();
duke@435	1212	static int out_offset_in_bytes();
duke@435	1213	static int err_offset_in_bytes();
duke@435	1214
duke@435	1215	// Debugging
duke@435	1216	friend class JavaClasses;
duke@435	1217	};
duke@435	1218
duke@435	1219
duke@435	1220	// Interface to java.lang.StackTraceElement objects
duke@435	1221
duke@435	1222	class java_lang_StackTraceElement: AllStatic {
duke@435	1223	private:
duke@435	1224	enum {
duke@435	1225	hc_declaringClass_offset = 0,
duke@435	1226	hc_methodName_offset = 1,
duke@435	1227	hc_fileName_offset = 2,
duke@435	1228	hc_lineNumber_offset = 3
duke@435	1229	};
duke@435	1230
duke@435	1231	static int declaringClass_offset;
duke@435	1232	static int methodName_offset;
duke@435	1233	static int fileName_offset;
duke@435	1234	static int lineNumber_offset;
duke@435	1235
duke@435	1236	public:
duke@435	1237	// Setters
duke@435	1238	static void set_declaringClass(oop element, oop value);
duke@435	1239	static void set_methodName(oop element, oop value);
duke@435	1240	static void set_fileName(oop element, oop value);
duke@435	1241	static void set_lineNumber(oop element, int value);
duke@435	1242
duke@435	1243	// Create an instance of StackTraceElement
duke@435	1244	static oop create(methodHandle m, int bci, TRAPS);
duke@435	1245
duke@435	1246	// Debugging
duke@435	1247	friend class JavaClasses;
duke@435	1248	};
duke@435	1249
duke@435	1250
duke@435	1251	// Interface to java.lang.AssertionStatusDirectives objects
duke@435	1252
duke@435	1253	class java_lang_AssertionStatusDirectives: AllStatic {
duke@435	1254	private:
duke@435	1255	enum {
duke@435	1256	hc_classes_offset,
duke@435	1257	hc_classEnabled_offset,
duke@435	1258	hc_packages_offset,
duke@435	1259	hc_packageEnabled_offset,
duke@435	1260	hc_deflt_offset
duke@435	1261	};
duke@435	1262
duke@435	1263	static int classes_offset;
duke@435	1264	static int classEnabled_offset;
duke@435	1265	static int packages_offset;
duke@435	1266	static int packageEnabled_offset;
duke@435	1267	static int deflt_offset;
duke@435	1268
duke@435	1269	public:
duke@435	1270	// Setters
duke@435	1271	static void set_classes(oop obj, oop val);
duke@435	1272	static void set_classEnabled(oop obj, oop val);
duke@435	1273	static void set_packages(oop obj, oop val);
duke@435	1274	static void set_packageEnabled(oop obj, oop val);
duke@435	1275	static void set_deflt(oop obj, bool val);
duke@435	1276	// Debugging
duke@435	1277	friend class JavaClasses;
duke@435	1278	};
duke@435	1279
duke@435	1280
duke@435	1281	class java_nio_Buffer: AllStatic {
duke@435	1282	private:
duke@435	1283	static int _limit_offset;
duke@435	1284
duke@435	1285	public:
duke@435	1286	static int limit_offset();
duke@435	1287	static void compute_offsets();
duke@435	1288	};
duke@435	1289
duke@435	1290	class sun_misc_AtomicLongCSImpl: AllStatic {
duke@435	1291	private:
duke@435	1292	static int _value_offset;
duke@435	1293
duke@435	1294	public:
duke@435	1295	static int value_offset();
duke@435	1296	static void compute_offsets();
duke@435	1297	};
duke@435	1298
duke@435	1299	class java_util_concurrent_locks_AbstractOwnableSynchronizer : AllStatic {
duke@435	1300	private:
duke@435	1301	static int _owner_offset;
duke@435	1302	public:
duke@435	1303	static void initialize(TRAPS);
duke@435	1304	static oop get_owner_threadObj(oop obj);
duke@435	1305	};
duke@435	1306
duke@435	1307	// Interface to hard-coded offset checking
duke@435	1308
duke@435	1309	class JavaClasses : AllStatic {
duke@435	1310	private:
duke@435	1311	static bool check_offset(const char *klass_name, int offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
duke@435	1312	static bool check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
jrose@567	1313	static bool check_constant(const char *klass_name, int constant, const char *field_name, const char* field_sig) PRODUCT_RETURN0;
duke@435	1314	public:
duke@435	1315	static void compute_hard_coded_offsets();
duke@435	1316	static void compute_offsets();
duke@435	1317	static void check_offsets() PRODUCT_RETURN;
duke@435	1318	};
stefank@2314	1319
stefank@2314	1320	#endif // SHARE_VM_CLASSFILE_JAVACLASSES_HPP