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src/share/vm/opto/runtime.hpp@7b0e9cba0307 (annotated)

src/share/vm/opto/runtime.hpp

Wed, 13 Jan 2010 15:26:39 -0800

author

ysr

date

Wed, 13 Jan 2010 15:26:39 -0800

changeset 1601

7b0e9cba0307

parent 1462

39b01ab7035a

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6896647: card marks can be deferred too long
Summary: Deferred card marks are now flushed during the gc prologue. Parallel[Scavege,OldGC] and SerialGC no longer defer card marks generated by COMPILER2 as a result of ReduceInitialCardMarks. For these cases, introduced a diagnostic option to defer the card marks, only for the purposes of testing and diagnostics. CMS and G1 continue to defer card marks. Potential performance concern related to single-threaded flushing of deferred card marks in the gc prologue will be addressed in the future.
Reviewed-by: never, johnc

duke@435	1	/*
duke@435	2	* Copyright 1998-2007 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	//------------------------------OptoRuntime------------------------------------
duke@435	26	// Opto compiler runtime routines
duke@435	27	//
duke@435	28	// These are all generated from Ideal graphs. They are called with the
duke@435	29	// Java calling convention. Internally they call C++. They are made once at
duke@435	30	// startup time and Opto compiles calls to them later.
duke@435	31	// Things are broken up into quads: the signature they will be called with,
duke@435	32	// the address of the generated code, the corresponding C++ code and an
duke@435	33	// nmethod.
duke@435	34
duke@435	35	// The signature (returned by "xxx_Type()") is used at startup time by the
duke@435	36	// Generator to make the generated code "xxx_Java". Opto compiles calls
duke@435	37	// to the generated code "xxx_Java". When the compiled code gets executed,
duke@435	38	// it calls the C++ code "xxx_C". The generated nmethod is saved in the
duke@435	39	// CodeCache. Exception handlers use the nmethod to get the callee-save
duke@435	40	// register OopMaps.
duke@435	41	class CallInfo;
duke@435	42
duke@435	43	//
duke@435	44	// NamedCounters are tagged counters which can be used for profiling
duke@435	45	// code in various ways. Currently they are used by the lock coarsening code
duke@435	46	//
duke@435	47
duke@435	48	class NamedCounter : public CHeapObj {
duke@435	49	public:
duke@435	50	enum CounterTag {
duke@435	51	NoTag,
duke@435	52	LockCounter,
duke@435	53	EliminatedLockCounter,
duke@435	54	BiasedLockingCounter
duke@435	55	};
duke@435	56
duke@435	57	private:
duke@435	58	const char * _name;
duke@435	59	int _count;
duke@435	60	CounterTag _tag;
duke@435	61	NamedCounter* _next;
duke@435	62
duke@435	63	public:
duke@435	64	NamedCounter(const char *n, CounterTag tag = NoTag):
duke@435	65	_name(n),
duke@435	66	_count(0),
duke@435	67	_next(NULL),
duke@435	68	_tag(tag) {}
duke@435	69
duke@435	70	const char * name() const { return _name; }
duke@435	71	int count() const { return _count; }
duke@435	72	address addr() { return (address)&_count; }
duke@435	73	CounterTag tag() const { return _tag; }
duke@435	74	void set_tag(CounterTag tag) { _tag = tag; }
duke@435	75
duke@435	76	NamedCounter* next() const { return _next; }
duke@435	77	void set_next(NamedCounter* next) {
duke@435	78	assert(_next == NULL, "already set");
duke@435	79	_next = next;
duke@435	80	}
duke@435	81
duke@435	82	};
duke@435	83
duke@435	84	class BiasedLockingNamedCounter : public NamedCounter {
duke@435	85	private:
duke@435	86	BiasedLockingCounters _counters;
duke@435	87
duke@435	88	public:
duke@435	89	BiasedLockingNamedCounter(const char *n) :
duke@435	90	NamedCounter(n, BiasedLockingCounter), _counters() {}
duke@435	91
duke@435	92	BiasedLockingCounters* counters() { return &_counters; }
duke@435	93	};
duke@435	94
duke@435	95	typedef const TypeFunc*(*TypeFunc_generator)();
duke@435	96
duke@435	97	class OptoRuntime : public AllStatic {
duke@435	98	friend class Matcher; // allow access to stub names
duke@435	99
duke@435	100	private:
duke@435	101	// define stubs
duke@435	102	static address generate_stub(ciEnv* ci_env, TypeFunc_generator gen, address C_function, const char *name, int is_fancy_jump, bool pass_tls, bool save_arguments, bool return_pc);
duke@435	103
duke@435	104	// References to generated stubs
duke@435	105	static address _new_instance_Java;
duke@435	106	static address _new_array_Java;
duke@435	107	static address _multianewarray2_Java;
duke@435	108	static address _multianewarray3_Java;
duke@435	109	static address _multianewarray4_Java;
duke@435	110	static address _multianewarray5_Java;
ysr@777	111	static address _g1_wb_pre_Java;
ysr@777	112	static address _g1_wb_post_Java;
duke@435	113	static address _vtable_must_compile_Java;
duke@435	114	static address _complete_monitor_locking_Java;
duke@435	115	static address _rethrow_Java;
duke@435	116
duke@435	117	static address _slow_arraycopy_Java;
duke@435	118	static address _register_finalizer_Java;
duke@435	119
duke@435	120	# ifdef ENABLE_ZAP_DEAD_LOCALS
duke@435	121	static address _zap_dead_Java_locals_Java;
duke@435	122	static address _zap_dead_native_locals_Java;
duke@435	123	# endif
duke@435	124
duke@435	125
duke@435	126	//
duke@435	127	// Implementation of runtime methods
duke@435	128	// =================================
duke@435	129
duke@435	130	// Allocate storage for a Java instance.
duke@435	131	static void new_instance_C(klassOopDesc* instance_klass, JavaThread *thread);
duke@435	132
duke@435	133	// Allocate storage for a objArray or typeArray
duke@435	134	static void new_array_C(klassOopDesc* array_klass, int len, JavaThread *thread);
duke@435	135
ysr@1601	136	// Post-slow-path-allocation, pre-initializing-stores step for
ysr@1601	137	// implementing ReduceInitialCardMarks
ysr@1601	138	static void new_store_pre_barrier(JavaThread* thread);
duke@435	139
duke@435	140	// Allocate storage for a multi-dimensional arrays
duke@435	141	// Note: needs to be fixed for arbitrary number of dimensions
duke@435	142	static void multianewarray2_C(klassOopDesc* klass, int len1, int len2, JavaThread *thread);
duke@435	143	static void multianewarray3_C(klassOopDesc* klass, int len1, int len2, int len3, JavaThread *thread);
duke@435	144	static void multianewarray4_C(klassOopDesc* klass, int len1, int len2, int len3, int len4, JavaThread *thread);
duke@435	145	static void multianewarray5_C(klassOopDesc* klass, int len1, int len2, int len3, int len4, int len5, JavaThread *thread);
ysr@777	146	static void g1_wb_pre_C(oopDesc* orig, JavaThread* thread);
ysr@777	147	static void g1_wb_post_C(void* card_addr, JavaThread* thread);
duke@435	148
duke@435	149	public:
duke@435	150	// Slow-path Locking and Unlocking
duke@435	151	static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread);
duke@435	152	static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock);
duke@435	153
duke@435	154	private:
duke@435	155
duke@435	156	// Implicit exception support
duke@435	157	static void throw_null_exception_C(JavaThread* thread);
duke@435	158
duke@435	159	// Exception handling
duke@435	160	static address handle_exception_C (JavaThread* thread);
duke@435	161	static address handle_exception_C_helper(JavaThread* thread, nmethod*& nm);
duke@435	162	static address rethrow_C (oopDesc* exception, JavaThread *thread, address return_pc );
duke@435	163	static void deoptimize_caller_frame (JavaThread *thread, bool doit);
duke@435	164
duke@435	165	// CodeBlob support
duke@435	166	// ===================================================================
duke@435	167
duke@435	168	static ExceptionBlob* _exception_blob;
duke@435	169	static void generate_exception_blob();
duke@435	170
duke@435	171	static void register_finalizer(oopDesc* obj, JavaThread* thread);
duke@435	172
duke@435	173	// zaping dead locals, either from Java frames or from native frames
duke@435	174	# ifdef ENABLE_ZAP_DEAD_LOCALS
duke@435	175	static void zap_dead_Java_locals_C( JavaThread* thread);
duke@435	176	static void zap_dead_native_locals_C( JavaThread* thread);
duke@435	177
duke@435	178	static void zap_dead_java_or_native_locals( JavaThread*, bool (*)(frame*));
duke@435	179
duke@435	180	public:
duke@435	181	static int ZapDeadCompiledLocals_count;
duke@435	182
duke@435	183	# endif
duke@435	184
duke@435	185
duke@435	186	public:
duke@435	187
duke@435	188	static bool is_callee_saved_register(MachRegisterNumbers reg);
duke@435	189
duke@435	190	// One time only generate runtime code stubs
duke@435	191	static void generate(ciEnv* env);
duke@435	192
duke@435	193	// Returns the name of a stub
duke@435	194	static const char* stub_name(address entry);
duke@435	195
duke@435	196	// access to runtime stubs entry points for java code
duke@435	197	static address new_instance_Java() { return _new_instance_Java; }
duke@435	198	static address new_array_Java() { return _new_array_Java; }
duke@435	199	static address multianewarray2_Java() { return _multianewarray2_Java; }
duke@435	200	static address multianewarray3_Java() { return _multianewarray3_Java; }
duke@435	201	static address multianewarray4_Java() { return _multianewarray4_Java; }
duke@435	202	static address multianewarray5_Java() { return _multianewarray5_Java; }
ysr@777	203	static address g1_wb_pre_Java() { return _g1_wb_pre_Java; }
ysr@777	204	static address g1_wb_post_Java() { return _g1_wb_post_Java; }
duke@435	205	static address vtable_must_compile_stub() { return _vtable_must_compile_Java; }
duke@435	206	static address complete_monitor_locking_Java() { return _complete_monitor_locking_Java; }
duke@435	207
duke@435	208	static address slow_arraycopy_Java() { return _slow_arraycopy_Java; }
duke@435	209	static address register_finalizer_Java() { return _register_finalizer_Java; }
duke@435	210
duke@435	211
duke@435	212	# ifdef ENABLE_ZAP_DEAD_LOCALS
duke@435	213	static address zap_dead_locals_stub(bool is_native) { return is_native
duke@435	214	? _zap_dead_native_locals_Java
duke@435	215	: _zap_dead_Java_locals_Java; }
duke@435	216	static MachNode* node_to_call_zap_dead_locals(Node* n, int block_num, bool is_native);
duke@435	217	# endif
duke@435	218
duke@435	219	static ExceptionBlob* exception_blob() { return _exception_blob; }
duke@435	220
duke@435	221	// Leaf routines helping with method data update
duke@435	222	static void profile_receiver_type_C(DataLayout* data, oopDesc* receiver);
duke@435	223
duke@435	224	// Implicit exception support
duke@435	225	static void throw_div0_exception_C (JavaThread* thread);
duke@435	226	static void throw_stack_overflow_error_C(JavaThread* thread);
duke@435	227
duke@435	228	// Exception handling
duke@435	229	static address rethrow_stub() { return _rethrow_Java; }
duke@435	230
duke@435	231
duke@435	232	// Type functions
duke@435	233	// ======================================================
duke@435	234
duke@435	235	static const TypeFunc* new_instance_Type(); // object allocation (slow case)
duke@435	236	static const TypeFunc* new_array_Type (); // [a]newarray (slow case)
duke@435	237	static const TypeFunc* multianewarray_Type(int ndim); // multianewarray
duke@435	238	static const TypeFunc* multianewarray2_Type(); // multianewarray
duke@435	239	static const TypeFunc* multianewarray3_Type(); // multianewarray
duke@435	240	static const TypeFunc* multianewarray4_Type(); // multianewarray
duke@435	241	static const TypeFunc* multianewarray5_Type(); // multianewarray
ysr@777	242	static const TypeFunc* g1_wb_pre_Type();
ysr@777	243	static const TypeFunc* g1_wb_post_Type();
duke@435	244	static const TypeFunc* complete_monitor_enter_Type();
duke@435	245	static const TypeFunc* complete_monitor_exit_Type();
duke@435	246	static const TypeFunc* uncommon_trap_Type();
duke@435	247	static const TypeFunc* athrow_Type();
duke@435	248	static const TypeFunc* rethrow_Type();
duke@435	249	static const TypeFunc* Math_D_D_Type(); // sin,cos & friends
duke@435	250	static const TypeFunc* Math_DD_D_Type(); // mod,pow & friends
duke@435	251	static const TypeFunc* modf_Type();
duke@435	252	static const TypeFunc* l2f_Type();
duke@435	253	static const TypeFunc* current_time_millis_Type();
duke@435	254
duke@435	255	static const TypeFunc* flush_windows_Type();
duke@435	256
duke@435	257	// arraycopy routine types
duke@435	258	static const TypeFunc* fast_arraycopy_Type(); // bit-blasters
duke@435	259	static const TypeFunc* checkcast_arraycopy_Type();
duke@435	260	static const TypeFunc* generic_arraycopy_Type();
duke@435	261	static const TypeFunc* slow_arraycopy_Type(); // the full routine
duke@435	262
duke@435	263	// leaf on stack replacement interpreter accessor types
duke@435	264	static const TypeFunc* osr_end_Type();
duke@435	265
duke@435	266	// leaf methodData routine types
duke@435	267	static const TypeFunc* profile_receiver_type_Type();
duke@435	268
duke@435	269	// leaf on stack replacement interpreter accessor types
duke@435	270	static const TypeFunc* fetch_int_Type();
duke@435	271	static const TypeFunc* fetch_long_Type();
duke@435	272	static const TypeFunc* fetch_float_Type();
duke@435	273	static const TypeFunc* fetch_double_Type();
duke@435	274	static const TypeFunc* fetch_oop_Type();
duke@435	275	static const TypeFunc* fetch_monitor_Type();
duke@435	276
duke@435	277	static const TypeFunc* register_finalizer_Type();
duke@435	278
duke@435	279	// Dtrace support
duke@435	280	static const TypeFunc* dtrace_method_entry_exit_Type();
duke@435	281	static const TypeFunc* dtrace_object_alloc_Type();
duke@435	282
duke@435	283	# ifdef ENABLE_ZAP_DEAD_LOCALS
duke@435	284	static const TypeFunc* zap_dead_locals_Type();
duke@435	285	# endif
duke@435	286
duke@435	287	private:
duke@435	288	static NamedCounter * volatile _named_counters;
duke@435	289
duke@435	290	public:
duke@435	291	// helper function which creates a named counter labeled with the
duke@435	292	// if they are available
duke@435	293	static NamedCounter* new_named_counter(JVMState* jvms, NamedCounter::CounterTag tag);
duke@435	294
duke@435	295	// dumps all the named counters
duke@435	296	static void print_named_counters();
duke@435	297
duke@435	298	};