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src/share/vm/runtime/sharedRuntime.hpp@c89f86385056 (annotated)

src/share/vm/runtime/sharedRuntime.hpp

Fri, 20 Mar 2009 23:19:36 -0700

author

jrose

date

Fri, 20 Mar 2009 23:19:36 -0700

changeset 1100

c89f86385056

parent 1045

70998f2e05ef

child 1145

e5b0439ef4ae

permissions

-rw-r--r--

6814659: separable cleanups and subroutines for 6655638
Summary: preparatory but separable changes for method handles
Reviewed-by: kvn, never

duke@435	1	/*
jrose@1100	2	* Copyright 1997-2009 Sun Microsystems, Inc. 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	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	class AdapterHandlerEntry;
duke@435	26	class vframeStream;
duke@435	27
duke@435	28	// Runtime is the base class for various runtime interfaces
duke@435	29	// (InterpreterRuntime, CompilerRuntime, etc.). It provides
duke@435	30	// shared functionality such as exception forwarding (C++ to
duke@435	31	// Java exceptions), locking/unlocking mechanisms, statistical
duke@435	32	// information, etc.
duke@435	33
duke@435	34	class SharedRuntime: AllStatic {
duke@435	35	private:
duke@435	36	static methodHandle resolve_sub_helper(JavaThread *thread,
duke@435	37	bool is_virtual,
duke@435	38	bool is_optimized, TRAPS);
duke@435	39
duke@435	40	// Shared stub locations
duke@435	41
duke@435	42	static RuntimeStub* _wrong_method_blob;
duke@435	43	static RuntimeStub* _ic_miss_blob;
duke@435	44	static RuntimeStub* _resolve_opt_virtual_call_blob;
duke@435	45	static RuntimeStub* _resolve_virtual_call_blob;
duke@435	46	static RuntimeStub* _resolve_static_call_blob;
duke@435	47
duke@435	48	static SafepointBlob* _polling_page_safepoint_handler_blob;
duke@435	49	static SafepointBlob* _polling_page_return_handler_blob;
duke@435	50	#ifdef COMPILER2
duke@435	51	static ExceptionBlob* _exception_blob;
duke@435	52	static UncommonTrapBlob* _uncommon_trap_blob;
duke@435	53	#endif // COMPILER2
duke@435	54
duke@435	55	#ifndef PRODUCT
duke@435	56
duke@435	57	// Counters
duke@435	58	static int _nof_megamorphic_calls; // total # of megamorphic calls (through vtable)
duke@435	59
duke@435	60	#endif // !PRODUCT
duke@435	61	public:
kamg@551	62
kamg@551	63	// max bytes for each dtrace string parameter
kamg@551	64	enum { max_dtrace_string_size = 256 };
kamg@551	65
duke@435	66	// The following arithmetic routines are used on platforms that do
duke@435	67	// not have machine instructions to implement their functionality.
duke@435	68	// Do not remove these.
duke@435	69
duke@435	70	// long arithmetics
duke@435	71	static jlong lmul(jlong y, jlong x);
duke@435	72	static jlong ldiv(jlong y, jlong x);
duke@435	73	static jlong lrem(jlong y, jlong x);
duke@435	74
duke@435	75	// float and double remainder
duke@435	76	static jfloat frem(jfloat x, jfloat y);
duke@435	77	static jdouble drem(jdouble x, jdouble y);
duke@435	78
duke@435	79	// float conversion (needs to set appropriate rounding mode)
duke@435	80	static jint f2i (jfloat x);
duke@435	81	static jlong f2l (jfloat x);
duke@435	82	static jint d2i (jdouble x);
duke@435	83	static jlong d2l (jdouble x);
duke@435	84	static jfloat d2f (jdouble x);
duke@435	85	static jfloat l2f (jlong x);
duke@435	86	static jdouble l2d (jlong x);
duke@435	87
duke@435	88	// double trigonometrics and transcendentals
duke@435	89	static jdouble dsin(jdouble x);
duke@435	90	static jdouble dcos(jdouble x);
duke@435	91	static jdouble dtan(jdouble x);
duke@435	92	static jdouble dlog(jdouble x);
duke@435	93	static jdouble dlog10(jdouble x);
duke@435	94	static jdouble dexp(jdouble x);
duke@435	95	static jdouble dpow(jdouble x, jdouble y);
duke@435	96
duke@435	97
duke@435	98	// exception handling across interpreter/compiler boundaries
duke@435	99	static address raw_exception_handler_for_return_address(address return_address);
duke@435	100	static address exception_handler_for_return_address(address return_address);
duke@435	101
ysr@777	102	#ifndef SERIALGC
ysr@777	103	// G1 write barriers
ysr@777	104	static void g1_wb_pre(oopDesc* orig, JavaThread *thread);
ysr@777	105	static void g1_wb_post(void* card_addr, JavaThread* thread);
ysr@777	106	#endif // !SERIALGC
ysr@777	107
duke@435	108	// exception handling and implicit exceptions
duke@435	109	static address compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception,
duke@435	110	bool force_unwind, bool top_frame_only);
duke@435	111	enum ImplicitExceptionKind {
duke@435	112	IMPLICIT_NULL,
duke@435	113	IMPLICIT_DIVIDE_BY_ZERO,
duke@435	114	STACK_OVERFLOW
duke@435	115	};
duke@435	116	static void throw_AbstractMethodError(JavaThread* thread);
dcubed@451	117	static void throw_IncompatibleClassChangeError(JavaThread* thread);
duke@435	118	static void throw_ArithmeticException(JavaThread* thread);
duke@435	119	static void throw_NullPointerException(JavaThread* thread);
duke@435	120	static void throw_NullPointerException_at_call(JavaThread* thread);
duke@435	121	static void throw_StackOverflowError(JavaThread* thread);
duke@435	122	static address continuation_for_implicit_exception(JavaThread* thread,
duke@435	123	address faulting_pc,
duke@435	124	ImplicitExceptionKind exception_kind);
duke@435	125
duke@435	126	// Shared stub locations
duke@435	127	static address get_poll_stub(address pc);
duke@435	128
duke@435	129	static address get_ic_miss_stub() {
duke@435	130	assert(_ic_miss_blob!= NULL, "oops");
duke@435	131	return _ic_miss_blob->instructions_begin();
duke@435	132	}
duke@435	133
duke@435	134	static address get_handle_wrong_method_stub() {
duke@435	135	assert(_wrong_method_blob!= NULL, "oops");
duke@435	136	return _wrong_method_blob->instructions_begin();
duke@435	137	}
duke@435	138
duke@435	139	#ifdef COMPILER2
duke@435	140	static void generate_uncommon_trap_blob(void);
duke@435	141	static UncommonTrapBlob* uncommon_trap_blob() { return _uncommon_trap_blob; }
duke@435	142	#endif // COMPILER2
duke@435	143
duke@435	144	static address get_resolve_opt_virtual_call_stub(){
duke@435	145	assert(_resolve_opt_virtual_call_blob != NULL, "oops");
duke@435	146	return _resolve_opt_virtual_call_blob->instructions_begin();
duke@435	147	}
duke@435	148	static address get_resolve_virtual_call_stub() {
duke@435	149	assert(_resolve_virtual_call_blob != NULL, "oops");
duke@435	150	return _resolve_virtual_call_blob->instructions_begin();
duke@435	151	}
duke@435	152	static address get_resolve_static_call_stub() {
duke@435	153	assert(_resolve_static_call_blob != NULL, "oops");
duke@435	154	return _resolve_static_call_blob->instructions_begin();
duke@435	155	}
duke@435	156
duke@435	157	static SafepointBlob* polling_page_return_handler_blob() { return _polling_page_return_handler_blob; }
duke@435	158	static SafepointBlob* polling_page_safepoint_handler_blob() { return _polling_page_safepoint_handler_blob; }
duke@435	159
duke@435	160	// Counters
duke@435	161	#ifndef PRODUCT
duke@435	162	static address nof_megamorphic_calls_addr() { return (address)&_nof_megamorphic_calls; }
duke@435	163	#endif // PRODUCT
duke@435	164
duke@435	165	// Helper routine for full-speed JVMTI exception throwing support
duke@435	166	static void throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception);
duke@435	167	static void throw_and_post_jvmti_exception(JavaThread *thread, symbolOop name, const char *message = NULL);
duke@435	168
dcubed@1045	169	// RedefineClasses() tracing support for obsolete method entry
dcubed@1045	170	static int rc_trace_method_entry(JavaThread* thread, methodOopDesc* m);
dcubed@1045	171
duke@435	172	// To be used as the entry point for unresolved native methods.
duke@435	173	static address native_method_throw_unsatisfied_link_error_entry();
duke@435	174
duke@435	175	// bytecode tracing is only used by the TraceBytecodes
duke@435	176	static intptr_t trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2) PRODUCT_RETURN0;
duke@435	177
duke@435	178	// Used to back off a spin lock that is under heavy contention
duke@435	179	static void yield_all(JavaThread* thread, int attempts = 0);
duke@435	180
duke@435	181	static oop retrieve_receiver( symbolHandle sig, frame caller );
duke@435	182
duke@435	183	static void register_finalizer(JavaThread* thread, oopDesc* obj);
duke@435	184
duke@435	185	// dtrace notifications
duke@435	186	static int dtrace_object_alloc(oopDesc* o);
duke@435	187	static int dtrace_object_alloc_base(Thread* thread, oopDesc* o);
duke@435	188	static int dtrace_method_entry(JavaThread* thread, methodOopDesc* m);
duke@435	189	static int dtrace_method_exit(JavaThread* thread, methodOopDesc* m);
duke@435	190
duke@435	191	// Utility method for retrieving the Java thread id, returns 0 if the
duke@435	192	// thread is not a well formed Java thread.
duke@435	193	static jlong get_java_tid(Thread* thread);
duke@435	194
duke@435	195
duke@435	196	// used by native wrappers to reenable yellow if overflow happened in native code
duke@435	197	static void reguard_yellow_pages();
duke@435	198
duke@435	199	/**
duke@435	200	* Fill in the "X cannot be cast to a Y" message for ClassCastException
duke@435	201	*
duke@435	202	* @param thr the current thread
duke@435	203	* @param name the name of the class of the object attempted to be cast
duke@435	204	* @return the dynamically allocated exception message (must be freed
duke@435	205	* by the caller using a resource mark)
duke@435	206	*
duke@435	207	* BCP must refer to the current 'checkcast' opcode for the frame
duke@435	208	* on top of the stack.
duke@435	209	* The caller (or one of it's callers) must use a ResourceMark
duke@435	210	* in order to correctly free the result.
duke@435	211	*/
duke@435	212	static char* generate_class_cast_message(JavaThread* thr, const char* name);
duke@435	213
duke@435	214	/**
duke@435	215	* Fill in the "X cannot be cast to a Y" message for ClassCastException
duke@435	216	*
duke@435	217	* @param name the name of the class of the object attempted to be cast
duke@435	218	* @param klass the name of the target klass attempt
duke@435	219	* @return the dynamically allocated exception message (must be freed
duke@435	220	* by the caller using a resource mark)
duke@435	221	*
duke@435	222	* This version does not require access the frame, so it can be called
duke@435	223	* from interpreted code
duke@435	224	* The caller (or one of it's callers) must use a ResourceMark
duke@435	225	* in order to correctly free the result.
duke@435	226	*/
duke@435	227	static char* generate_class_cast_message(const char* name, const char* klass);
duke@435	228
duke@435	229	// Resolves a call site- may patch in the destination of the call into the
duke@435	230	// compiled code.
duke@435	231	static methodHandle resolve_helper(JavaThread *thread,
duke@435	232	bool is_virtual,
duke@435	233	bool is_optimized, TRAPS);
duke@435	234
duke@435	235	static void generate_stubs(void);
duke@435	236
duke@435	237	private:
duke@435	238	// deopt blob
duke@435	239	static void generate_deopt_blob(void);
duke@435	240	static DeoptimizationBlob* _deopt_blob;
duke@435	241
duke@435	242	public:
duke@435	243	static DeoptimizationBlob* deopt_blob(void) { return _deopt_blob; }
duke@435	244
duke@435	245	// Resets a call-site in compiled code so it will get resolved again.
duke@435	246	static methodHandle reresolve_call_site(JavaThread *thread, TRAPS);
duke@435	247
duke@435	248	// In the code prolog, if the klass comparison fails, the inline cache
duke@435	249	// misses and the call site is patched to megamorphic
duke@435	250	static methodHandle handle_ic_miss_helper(JavaThread* thread, TRAPS);
duke@435	251
duke@435	252	// Find the method that called us.
duke@435	253	static methodHandle find_callee_method(JavaThread* thread, TRAPS);
duke@435	254
duke@435	255
duke@435	256	private:
duke@435	257	static Handle find_callee_info(JavaThread* thread,
duke@435	258	Bytecodes::Code& bc,
duke@435	259	CallInfo& callinfo, TRAPS);
duke@435	260	static Handle find_callee_info_helper(JavaThread* thread,
duke@435	261	vframeStream& vfst,
duke@435	262	Bytecodes::Code& bc,
duke@435	263	CallInfo& callinfo, TRAPS);
duke@435	264
duke@435	265	static address clean_virtual_call_entry();
duke@435	266	static address clean_opt_virtual_call_entry();
duke@435	267	static address clean_static_call_entry();
duke@435	268
duke@435	269	public:
duke@435	270
duke@435	271	// Read the array of BasicTypes from a Java signature, and compute where
duke@435	272	// compiled Java code would like to put the results. Values in reg_lo and
duke@435	273	// reg_hi refer to 4-byte quantities. Values less than SharedInfo::stack0 are
duke@435	274	// registers, those above refer to 4-byte stack slots. All stack slots are
duke@435	275	// based off of the window top. SharedInfo::stack0 refers to the first usable
duke@435	276	// slot in the bottom of the frame. SharedInfo::stack0+1 refers to the memory word
duke@435	277	// 4-bytes higher. So for sparc because the register window save area is at
duke@435	278	// the bottom of the frame the first 16 words will be skipped and SharedInfo::stack0
duke@435	279	// will be just above it. (
duke@435	280	// return value is the maximum number of VMReg stack slots the convention will use.
duke@435	281	static int java_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed, int is_outgoing);
duke@435	282
duke@435	283	// Ditto except for calling C
duke@435	284	static int c_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed);
duke@435	285
duke@435	286	// Generate I2C and C2I adapters. These adapters are simple argument marshalling
duke@435	287	// blobs. Unlike adapters in the tiger and earlier releases the code in these
duke@435	288	// blobs does not create a new frame and are therefore virtually invisible
duke@435	289	// to the stack walking code. In general these blobs extend the callers stack
duke@435	290	// as needed for the conversion of argument locations.
duke@435	291
duke@435	292	// When calling a c2i blob the code will always call the interpreter even if
duke@435	293	// by the time we reach the blob there is compiled code available. This allows
duke@435	294	// the blob to pass the incoming stack pointer (the sender sp) in a known
duke@435	295	// location for the interpreter to record. This is used by the frame code
duke@435	296	// to correct the sender code to match up with the stack pointer when the
duke@435	297	// thread left the compiled code. In addition it allows the interpreter
duke@435	298	// to remove the space the c2i adapter allocated to do it argument conversion.
duke@435	299
duke@435	300	// Although a c2i blob will always run interpreted even if compiled code is
duke@435	301	// present if we see that compiled code is present the compiled call site
duke@435	302	// will be patched/re-resolved so that later calls will run compiled.
duke@435	303
duke@435	304	// Aditionally a c2i blob need to have a unverified entry because it can be reached
duke@435	305	// in situations where the call site is an inlined cache site and may go megamorphic.
duke@435	306
duke@435	307	// A i2c adapter is simpler than the c2i adapter. This is because it is assumed
duke@435	308	// that the interpreter before it does any call dispatch will record the current
duke@435	309	// stack pointer in the interpreter frame. On return it will restore the stack
duke@435	310	// pointer as needed. This means the i2c adapter code doesn't need any special
duke@435	311	// handshaking path with compiled code to keep the stack walking correct.
duke@435	312
duke@435	313	static AdapterHandlerEntry* generate_i2c2i_adapters(MacroAssembler *_masm,
duke@435	314	int total_args_passed,
duke@435	315	int max_arg,
duke@435	316	const BasicType *sig_bt,
duke@435	317	const VMRegPair *regs);
duke@435	318
duke@435	319	// OSR support
duke@435	320
duke@435	321	// OSR_migration_begin will extract the jvm state from an interpreter
duke@435	322	// frame (locals, monitors) and store the data in a piece of C heap
duke@435	323	// storage. This then allows the interpreter frame to be removed from the
duke@435	324	// stack and the OSR nmethod to be called. That method is called with a
duke@435	325	// pointer to the C heap storage. This pointer is the return value from
duke@435	326	// OSR_migration_begin.
duke@435	327
duke@435	328	static intptr_t* OSR_migration_begin( JavaThread *thread);
duke@435	329
duke@435	330	// OSR_migration_end is a trivial routine. It is called after the compiled
duke@435	331	// method has extracted the jvm state from the C heap that OSR_migration_begin
duke@435	332	// created. It's entire job is to simply free this storage.
duke@435	333	static void OSR_migration_end ( intptr_t* buf);
duke@435	334
duke@435	335	// Convert a sig into a calling convention register layout
duke@435	336	// and find interesting things about it.
duke@435	337	static VMRegPair* find_callee_arguments(symbolOop sig, bool is_static, int *arg_size);
duke@435	338	static VMReg name_for_receiver();
duke@435	339
duke@435	340	// "Top of Stack" slots that may be unused by the calling convention but must
duke@435	341	// otherwise be preserved.
duke@435	342	// On Intel these are not necessary and the value can be zero.
duke@435	343	// On Sparc this describes the words reserved for storing a register window
duke@435	344	// when an interrupt occurs.
duke@435	345	static uint out_preserve_stack_slots();
duke@435	346
duke@435	347	// Save and restore a native result
duke@435	348	static void save_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots );
duke@435	349	static void restore_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots );
duke@435	350
duke@435	351	// Generate a native wrapper for a given method. The method takes arguments
duke@435	352	// in the Java compiled code convention, marshals them to the native
duke@435	353	// convention (handlizes oops, etc), transitions to native, makes the call,
duke@435	354	// returns to java state (possibly blocking), unhandlizes any result and
duke@435	355	// returns.
duke@435	356	static nmethod *generate_native_wrapper(MacroAssembler* masm,
duke@435	357	methodHandle method,
duke@435	358	int total_args_passed,
duke@435	359	int max_arg,
duke@435	360	BasicType *sig_bt,
duke@435	361	VMRegPair *regs,
duke@435	362	BasicType ret_type );
duke@435	363
kamg@551	364	#ifdef HAVE_DTRACE_H
kamg@551	365	// Generate a dtrace wrapper for a given method. The method takes arguments
kamg@551	366	// in the Java compiled code convention, marshals them to the native
kamg@551	367	// convention (handlizes oops, etc), transitions to native, makes the call,
kamg@551	368	// returns to java state (possibly blocking), unhandlizes any result and
kamg@551	369	// returns.
kamg@551	370	static nmethod *generate_dtrace_nmethod(MacroAssembler* masm,
kamg@551	371	methodHandle method);
kamg@551	372
kamg@551	373	// dtrace support to convert a Java string to utf8
kamg@551	374	static void get_utf(oopDesc* src, address dst);
kamg@551	375	#endif // def HAVE_DTRACE_H
kamg@551	376
duke@435	377	// A compiled caller has just called the interpreter, but compiled code
duke@435	378	// exists. Patch the caller so he no longer calls into the interpreter.
duke@435	379	static void fixup_callers_callsite(methodOopDesc* moop, address ret_pc);
duke@435	380
duke@435	381	// Slow-path Locking and Unlocking
duke@435	382	static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread);
duke@435	383	static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock);
duke@435	384
duke@435	385	// Resolving of calls
duke@435	386	static address resolve_static_call_C (JavaThread *thread);
duke@435	387	static address resolve_virtual_call_C (JavaThread *thread);
duke@435	388	static address resolve_opt_virtual_call_C(JavaThread *thread);
duke@435	389
duke@435	390	// arraycopy, the non-leaf version. (See StubRoutines for all the leaf calls.)
duke@435	391	static void slow_arraycopy_C(oopDesc* src, jint src_pos,
duke@435	392	oopDesc* dest, jint dest_pos,
duke@435	393	jint length, JavaThread* thread);
duke@435	394
duke@435	395	// handle ic miss with caller being compiled code
duke@435	396	// wrong method handling (inline cache misses, zombie methods)
duke@435	397	static address handle_wrong_method(JavaThread* thread);
duke@435	398	static address handle_wrong_method_ic_miss(JavaThread* thread);
duke@435	399
duke@435	400	#ifndef PRODUCT
duke@435	401
duke@435	402	// Collect and print inline cache miss statistics
duke@435	403	private:
duke@435	404	enum { maxICmiss_count = 100 };
duke@435	405	static int _ICmiss_index; // length of IC miss histogram
duke@435	406	static int _ICmiss_count[maxICmiss_count]; // miss counts
duke@435	407	static address _ICmiss_at[maxICmiss_count]; // miss addresses
duke@435	408	static void trace_ic_miss(address at);
duke@435	409
duke@435	410	public:
duke@435	411	static int _monitor_enter_ctr; // monitor enter slow
duke@435	412	static int _monitor_exit_ctr; // monitor exit slow
duke@435	413	static int _throw_null_ctr; // throwing a null-pointer exception
duke@435	414	static int _ic_miss_ctr; // total # of IC misses
duke@435	415	static int _wrong_method_ctr;
duke@435	416	static int _resolve_static_ctr;
duke@435	417	static int _resolve_virtual_ctr;
duke@435	418	static int _resolve_opt_virtual_ctr;
duke@435	419	static int _implicit_null_throws;
duke@435	420	static int _implicit_div0_throws;
duke@435	421
duke@435	422	static int _jbyte_array_copy_ctr; // Slow-path byte array copy
duke@435	423	static int _jshort_array_copy_ctr; // Slow-path short array copy
duke@435	424	static int _jint_array_copy_ctr; // Slow-path int array copy
duke@435	425	static int _jlong_array_copy_ctr; // Slow-path long array copy
duke@435	426	static int _oop_array_copy_ctr; // Slow-path oop array copy
duke@435	427	static int _checkcast_array_copy_ctr; // Slow-path oop array copy, with cast
duke@435	428	static int _unsafe_array_copy_ctr; // Slow-path includes alignment checks
duke@435	429	static int _generic_array_copy_ctr; // Slow-path includes type decoding
duke@435	430	static int _slow_array_copy_ctr; // Slow-path failed out to a method call
duke@435	431
duke@435	432	static int _new_instance_ctr; // 'new' object requires GC
duke@435	433	static int _new_array_ctr; // 'new' array requires GC
duke@435	434	static int _multi1_ctr, _multi2_ctr, _multi3_ctr, _multi4_ctr, _multi5_ctr;
duke@435	435	static int _find_handler_ctr; // find exception handler
duke@435	436	static int _rethrow_ctr; // rethrow exception
duke@435	437	static int _mon_enter_stub_ctr; // monitor enter stub
duke@435	438	static int _mon_exit_stub_ctr; // monitor exit stub
duke@435	439	static int _mon_enter_ctr; // monitor enter slow
duke@435	440	static int _mon_exit_ctr; // monitor exit slow
duke@435	441	static int _partial_subtype_ctr; // SubRoutines::partial_subtype_check
duke@435	442
duke@435	443	// Statistics code
duke@435	444	// stats for "normal" compiled calls (non-interface)
duke@435	445	static int _nof_normal_calls; // total # of calls
duke@435	446	static int _nof_optimized_calls; // total # of statically-bound calls
duke@435	447	static int _nof_inlined_calls; // total # of inlined normal calls
duke@435	448	static int _nof_static_calls; // total # of calls to static methods or super methods (invokespecial)
duke@435	449	static int _nof_inlined_static_calls; // total # of inlined static calls
duke@435	450	// stats for compiled interface calls
duke@435	451	static int _nof_interface_calls; // total # of compiled calls
duke@435	452	static int _nof_optimized_interface_calls; // total # of statically-bound interface calls
duke@435	453	static int _nof_inlined_interface_calls; // total # of inlined interface calls
duke@435	454	static int _nof_megamorphic_interface_calls;// total # of megamorphic interface calls
duke@435	455	// stats for runtime exceptions
duke@435	456	static int _nof_removable_exceptions; // total # of exceptions that could be replaced by branches due to inlining
duke@435	457
duke@435	458	public: // for compiler
duke@435	459	static address nof_normal_calls_addr() { return (address)&_nof_normal_calls; }
duke@435	460	static address nof_optimized_calls_addr() { return (address)&_nof_optimized_calls; }
duke@435	461	static address nof_inlined_calls_addr() { return (address)&_nof_inlined_calls; }
duke@435	462	static address nof_static_calls_addr() { return (address)&_nof_static_calls; }
duke@435	463	static address nof_inlined_static_calls_addr() { return (address)&_nof_inlined_static_calls; }
duke@435	464	static address nof_interface_calls_addr() { return (address)&_nof_interface_calls; }
duke@435	465	static address nof_optimized_interface_calls_addr() { return (address)&_nof_optimized_interface_calls; }
duke@435	466	static address nof_inlined_interface_calls_addr() { return (address)&_nof_inlined_interface_calls; }
duke@435	467	static address nof_megamorphic_interface_calls_addr() { return (address)&_nof_megamorphic_interface_calls; }
duke@435	468	static void print_call_statistics(int comp_total);
duke@435	469	static void print_statistics();
duke@435	470	static void print_ic_miss_histogram();
duke@435	471
duke@435	472	#endif // PRODUCT
duke@435	473	};
duke@435	474
duke@435	475
duke@435	476	// ---------------------------------------------------------------------------
duke@435	477	// Implementation of AdapterHandlerLibrary
duke@435	478	//
duke@435	479	// This library manages argument marshaling adapters and native wrappers.
duke@435	480	// There are 2 flavors of adapters: I2C and C2I.
duke@435	481	//
duke@435	482	// The I2C flavor takes a stock interpreted call setup, marshals the arguments
duke@435	483	// for a Java-compiled call, and jumps to Rmethod-> code()->
duke@435	484	// instructions_begin(). It is broken to call it without an nmethod assigned.
duke@435	485	// The usual behavior is to lift any register arguments up out of the stack
duke@435	486	// and possibly re-pack the extra arguments to be contigious. I2C adapters
duke@435	487	// will save what the interpreter's stack pointer will be after arguments are
duke@435	488	// popped, then adjust the interpreter's frame size to force alignment and
duke@435	489	// possibly to repack the arguments. After re-packing, it jumps to the
duke@435	490	// compiled code start. There are no safepoints in this adapter code and a GC
duke@435	491	// cannot happen while marshaling is in progress.
duke@435	492	//
duke@435	493	// The C2I flavor takes a stock compiled call setup plus the target method in
duke@435	494	// Rmethod, marshals the arguments for an interpreted call and jumps to
duke@435	495	// Rmethod->_i2i_entry. On entry, the interpreted frame has not yet been
duke@435	496	// setup. Compiled frames are fixed-size and the args are likely not in the
duke@435	497	// right place. Hence all the args will likely be copied into the
duke@435	498	// interpreter's frame, forcing that frame to grow. The compiled frame's
duke@435	499	// outgoing stack args will be dead after the copy.
duke@435	500	//
duke@435	501	// Native wrappers, like adapters, marshal arguments. Unlike adapters they
duke@435	502	// also perform an offical frame push & pop. They have a call to the native
duke@435	503	// routine in their middles and end in a return (instead of ending in a jump).
duke@435	504	// The native wrappers are stored in real nmethods instead of the BufferBlobs
duke@435	505	// used by the adapters. The code generation happens here because it's very
duke@435	506	// similar to what the adapters have to do.
duke@435	507
duke@435	508	class AdapterHandlerEntry : public CHeapObj {
duke@435	509	private:
duke@435	510	address _i2c_entry;
duke@435	511	address _c2i_entry;
duke@435	512	address _c2i_unverified_entry;
duke@435	513
duke@435	514	public:
kamg@551	515
kamg@551	516	// The name we give all buffer blobs
kamg@551	517	static const char* name;
kamg@551	518
duke@435	519	AdapterHandlerEntry(address i2c_entry, address c2i_entry, address c2i_unverified_entry):
duke@435	520	_i2c_entry(i2c_entry),
duke@435	521	_c2i_entry(c2i_entry),
duke@435	522	_c2i_unverified_entry(c2i_unverified_entry) {
duke@435	523	}
duke@435	524
duke@435	525	address get_i2c_entry() { return _i2c_entry; }
duke@435	526	address get_c2i_entry() { return _c2i_entry; }
duke@435	527	address get_c2i_unverified_entry() { return _c2i_unverified_entry; }
kamg@551	528
duke@435	529	void relocate(address new_base);
duke@435	530	#ifndef PRODUCT
duke@435	531	void print();
duke@435	532	#endif /* PRODUCT */
duke@435	533	};
duke@435	534
duke@435	535	class AdapterHandlerLibrary: public AllStatic {
duke@435	536	private:
kamg@551	537	static u_char _buffer[]; // the temporary code buffer
kamg@551	538	static GrowableArray<uint64_t>* _fingerprints; // the fingerprint collection
kamg@551	539	static GrowableArray<AdapterHandlerEntry*> * _handlers; // the corresponding handlers
duke@435	540	enum {
duke@435	541	AbstractMethodHandler = 1 // special handler for abstract methods
duke@435	542	};
duke@435	543	static void initialize();
duke@435	544	static int get_create_adapter_index(methodHandle method);
kamg@551	545	static address get_i2c_entry( int index ) {
kamg@551	546	return get_entry(index)->get_i2c_entry();
kamg@551	547	}
kamg@551	548	static address get_c2i_entry( int index ) {
kamg@551	549	return get_entry(index)->get_c2i_entry();
kamg@551	550	}
kamg@551	551	static address get_c2i_unverified_entry( int index ) {
kamg@551	552	return get_entry(index)->get_c2i_unverified_entry();
kamg@551	553	}
duke@435	554
duke@435	555	public:
kamg@551	556	static AdapterHandlerEntry* get_entry( int index ) { return _handlers->at(index); }
duke@435	557	static nmethod* create_native_wrapper(methodHandle method);
kamg@551	558	static AdapterHandlerEntry* get_adapter(methodHandle method) {
kamg@551	559	return get_entry(get_create_adapter_index(method));
kamg@551	560	}
kamg@551	561	#ifdef HAVE_DTRACE_H
kamg@551	562	static nmethod* create_dtrace_nmethod (methodHandle method);
kamg@551	563	#endif // HAVE_DTRACE_H
duke@435	564
duke@435	565	#ifndef PRODUCT
duke@435	566	static void print_handler(CodeBlob* b);
duke@435	567	static bool contains(CodeBlob* b);
duke@435	568	#endif /* PRODUCT */
duke@435	569
duke@435	570	};