• file
• revisions
• annotate
• diff
• comparison
• raw

src/share/vm/runtime/fprofiler.hpp@7ee622712fcf (annotated)

src/share/vm/runtime/fprofiler.hpp

Tue, 04 Mar 2008 09:44:24 -0500

author

sbohne

date

Tue, 04 Mar 2008 09:44:24 -0500

changeset 493

7ee622712fcf

parent 435

a61af66fc99e

child 542

93b6525e3b82

permissions

-rw-r--r--

6666698: EnableBiasedLocking with BiasedLockingStartupDelay can block Watcher thread
Summary: Enqueue VM_EnableBiasedLocking operation asynchronously
Reviewed-by: never, xlu, kbr, acorn

duke@435	1	/*
duke@435	2	* Copyright 1997-2007 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	// a simple flat profiler for Java
duke@435	26
duke@435	27
duke@435	28	// Forward declaration of classes defined in this header file
duke@435	29	class ThreadProfiler;
duke@435	30	class ThreadProfilerMark;
duke@435	31	class FlatProfiler;
duke@435	32	class IntervalData;
duke@435	33
duke@435	34	// Declarations of classes defined only in the implementation.
duke@435	35	class ProfilerNode;
duke@435	36	class FlatProfilerTask;
duke@435	37
duke@435	38	enum TickPosition {
duke@435	39	tp_code,
duke@435	40	tp_native
duke@435	41	};
duke@435	42
duke@435	43	// One of these guys is constructed as we enter interesting regions
duke@435	44	// and destructed as we exit the region. While we are in the region
duke@435	45	// ticks are allotted to the region.
duke@435	46	class ThreadProfilerMark: public StackObj {
duke@435	47	public:
duke@435	48	// For now, the only thread-specific region is the class loader.
duke@435	49	enum Region { noRegion, classLoaderRegion, extraRegion, maxRegion };
duke@435	50
duke@435	51	ThreadProfilerMark(Region) KERNEL_RETURN;
duke@435	52	~ThreadProfilerMark() KERNEL_RETURN;
duke@435	53
duke@435	54	private:
duke@435	55	ThreadProfiler* _pp;
duke@435	56	Region _r;
duke@435	57	};
duke@435	58
duke@435	59	#ifndef FPROF_KERNEL
duke@435	60
duke@435	61	class IntervalData VALUE_OBJ_CLASS_SPEC {
duke@435	62	// Just to keep these things all together
duke@435	63	private:
duke@435	64	int _interpreted;
duke@435	65	int _compiled;
duke@435	66	int _native;
duke@435	67	int _compiling;
duke@435	68	public:
duke@435	69	int interpreted() {
duke@435	70	return _interpreted;
duke@435	71	}
duke@435	72	int compiled() {
duke@435	73	return _compiled;
duke@435	74	}
duke@435	75	int native() {
duke@435	76	return _native;
duke@435	77	}
duke@435	78	int compiling() {
duke@435	79	return _compiling;
duke@435	80	}
duke@435	81	int total() {
duke@435	82	return (interpreted() + compiled() + native() + compiling());
duke@435	83	}
duke@435	84	void inc_interpreted() {
duke@435	85	_interpreted += 1;
duke@435	86	}
duke@435	87	void inc_compiled() {
duke@435	88	_compiled += 1;
duke@435	89	}
duke@435	90	void inc_native() {
duke@435	91	_native += 1;
duke@435	92	}
duke@435	93	void inc_compiling() {
duke@435	94	_compiling += 1;
duke@435	95	}
duke@435	96	void reset() {
duke@435	97	_interpreted = 0;
duke@435	98	_compiled = 0;
duke@435	99	_native = 0;
duke@435	100	_compiling = 0;
duke@435	101	}
duke@435	102	static void print_header(outputStream* st);
duke@435	103	void print_data(outputStream* st);
duke@435	104	};
duke@435	105	#endif // FPROF_KERNEL
duke@435	106
duke@435	107	class ThreadProfiler: public CHeapObj {
duke@435	108	public:
duke@435	109	ThreadProfiler() KERNEL_RETURN;
duke@435	110	~ThreadProfiler() KERNEL_RETURN;
duke@435	111
duke@435	112	// Resets the profiler
duke@435	113	void reset() KERNEL_RETURN;
duke@435	114
duke@435	115	// Activates the profiler for a certain thread
duke@435	116	void engage() KERNEL_RETURN;
duke@435	117
duke@435	118	// Deactivates the profiler
duke@435	119	void disengage() KERNEL_RETURN;
duke@435	120
duke@435	121	// Prints the collected profiling information
duke@435	122	void print(const char* thread_name) KERNEL_RETURN;
duke@435	123
duke@435	124	// Garbage Collection Support
duke@435	125	void oops_do(OopClosure* f) KERNEL_RETURN;
duke@435	126
duke@435	127	#ifndef FPROF_KERNEL
duke@435	128	private:
duke@435	129	// for recording ticks.
duke@435	130	friend class ProfilerNode;
duke@435	131	char* area_bottom; // preallocated area for pnodes
duke@435	132	char* area_top;
duke@435	133	char* area_limit;
duke@435	134	static int table_size;
duke@435	135	ProfilerNode** table;
duke@435	136
duke@435	137	private:
duke@435	138	void record_interpreted_tick(frame fr, TickPosition where, int* ticks);
duke@435	139	void record_compiled_tick (JavaThread* thread, frame fr, TickPosition where);
duke@435	140	void interpreted_update(methodOop method, TickPosition where);
duke@435	141	void compiled_update (methodOop method, TickPosition where);
duke@435	142	void stub_update (methodOop method, const char* name, TickPosition where);
duke@435	143	void adapter_update (TickPosition where);
duke@435	144
duke@435	145	void runtime_stub_update(const CodeBlob* stub, const char* name, TickPosition where);
duke@435	146	void unknown_compiled_update (const CodeBlob* cb, TickPosition where);
duke@435	147
duke@435	148	void vm_update (TickPosition where);
duke@435	149	void vm_update (const char* name, TickPosition where);
duke@435	150
duke@435	151	void record_tick_for_running_frame(JavaThread* thread, frame fr);
duke@435	152	void record_tick_for_calling_frame(JavaThread* thread, frame fr);
duke@435	153
duke@435	154	void initialize();
duke@435	155
duke@435	156	static int entry(int value);
duke@435	157
duke@435	158
duke@435	159	private:
duke@435	160	friend class FlatProfiler;
duke@435	161	void record_tick(JavaThread* thread);
duke@435	162	bool engaged;
duke@435	163	// so we can do percentages for this thread, and quick checks for activity
duke@435	164	int thread_ticks;
duke@435	165	int compiler_ticks;
duke@435	166	int interpreter_ticks;
duke@435	167
duke@435	168	public:
duke@435	169	void inc_thread_ticks() { thread_ticks += 1; }
duke@435	170
duke@435	171	private:
duke@435	172	friend class ThreadProfilerMark;
duke@435	173	// counters for thread-specific regions
duke@435	174	bool region_flag[ThreadProfilerMark::maxRegion];
duke@435	175	int class_loader_ticks;
duke@435	176	int extra_ticks;
duke@435	177
duke@435	178	private:
duke@435	179	// other thread-specific regions
duke@435	180	int blocked_ticks;
duke@435	181	enum UnknownTickSites {
duke@435	182	ut_null_method,
duke@435	183	ut_vtable_stubs,
duke@435	184	ut_running_frame,
duke@435	185	ut_calling_frame,
duke@435	186	ut_no_pc,
duke@435	187	ut_no_last_Java_frame,
duke@435	188	ut_unknown_thread_state,
duke@435	189	ut_end
duke@435	190	};
duke@435	191	int unknown_ticks_array[ut_end];
duke@435	192	int unknown_ticks() {
duke@435	193	int result = 0;
duke@435	194	for (int ut = 0; ut < ut_end; ut += 1) {
duke@435	195	result += unknown_ticks_array[ut];
duke@435	196	}
duke@435	197	return result;
duke@435	198	}
duke@435	199
duke@435	200	elapsedTimer timer;
duke@435	201
duke@435	202	// For interval timing
duke@435	203	private:
duke@435	204	IntervalData _interval_data;
duke@435	205	IntervalData interval_data() {
duke@435	206	return _interval_data;
duke@435	207	}
duke@435	208	IntervalData* interval_data_ref() {
duke@435	209	return &_interval_data;
duke@435	210	}
duke@435	211	#endif // FPROF_KERNEL
duke@435	212	};
duke@435	213
duke@435	214	class FlatProfiler: AllStatic {
duke@435	215	public:
duke@435	216	static void reset() KERNEL_RETURN ;
duke@435	217	static void engage(JavaThread* mainThread, bool fullProfile) KERNEL_RETURN ;
duke@435	218	static void disengage() KERNEL_RETURN ;
duke@435	219	static void print(int unused) KERNEL_RETURN ;
duke@435	220	static bool is_active() KERNEL_RETURN_(return false;) ;
duke@435	221
duke@435	222	// This is NULL if each thread has its own thread profiler,
duke@435	223	// else this is the single thread profiler used by all threads.
duke@435	224	// In particular it makes a difference during garbage collection,
duke@435	225	// where you only want to traverse each thread profiler once.
duke@435	226	static ThreadProfiler* get_thread_profiler() KERNEL_RETURN_(return NULL;);
duke@435	227
duke@435	228	// Garbage Collection Support
duke@435	229	static void oops_do(OopClosure* f) KERNEL_RETURN ;
duke@435	230
duke@435	231	// Support for disassembler to inspect the PCRecorder
duke@435	232
duke@435	233	// Returns the start address for a given pc
duke@435	234	// NULL is returned if the PCRecorder is inactive
duke@435	235	static address bucket_start_for(address pc) KERNEL_RETURN_(return NULL;);
duke@435	236
duke@435	237	enum { MillisecsPerTick = 10 }; // ms per profiling ticks
duke@435	238
duke@435	239	// Returns the number of ticks recorded for the bucket
duke@435	240	// pc belongs to.
duke@435	241	static int bucket_count_for(address pc) KERNEL_RETURN_(return 0;);
duke@435	242
duke@435	243	#ifndef FPROF_KERNEL
duke@435	244
duke@435	245	private:
duke@435	246	static bool full_profile() {
duke@435	247	return full_profile_flag;
duke@435	248	}
duke@435	249
duke@435	250	friend class ThreadProfiler;
duke@435	251	// the following group of ticks cover everything that's not attributed to individual Java methods
duke@435	252	static int received_gc_ticks; // ticks during which gc was active
duke@435	253	static int vm_operation_ticks; // total ticks in vm_operations other than GC
duke@435	254	static int threads_lock_ticks; // the number of times we couldn't get the Threads_lock without blocking
duke@435	255	static int blocked_ticks; // ticks when the thread was blocked.
duke@435	256	static int class_loader_ticks; // total ticks in class loader
duke@435	257	static int extra_ticks; // total ticks an extra temporary measuring
duke@435	258	static int compiler_ticks; // total ticks in compilation
duke@435	259	static int interpreter_ticks; // ticks in unknown interpreted method
duke@435	260	static int deopt_ticks; // ticks in deoptimization
duke@435	261	static int unknown_ticks; // ticks that cannot be categorized
duke@435	262	static int received_ticks; // ticks that were received by task
duke@435	263	static int delivered_ticks; // ticks that were delivered by task
duke@435	264	static int non_method_ticks() {
duke@435	265	return
duke@435	266	( received_gc_ticks
duke@435	267	+ vm_operation_ticks
duke@435	268	+ deopt_ticks
duke@435	269	+ threads_lock_ticks
duke@435	270	+ blocked_ticks
duke@435	271	+ compiler_ticks
duke@435	272	+ interpreter_ticks
duke@435	273	+ unknown_ticks );
duke@435	274	}
duke@435	275	static elapsedTimer timer;
duke@435	276
duke@435	277	// Counts of each of the byte codes
duke@435	278	static int* bytecode_ticks;
duke@435	279	static int* bytecode_ticks_stub;
duke@435	280	static void print_byte_code_statistics();
duke@435	281
duke@435	282	// the ticks below are for continuous profiling (to adjust recompilation, etc.)
duke@435	283	static int all_ticks; // total count of ticks received so far
duke@435	284	static int all_int_ticks; // ticks in interpreter
duke@435	285	static int all_comp_ticks; // ticks in compiled code (+ native)
duke@435	286	static bool full_profile_flag; // collecting full profile?
duke@435	287
duke@435	288	// to accumulate thread-specific data
duke@435	289	// if we aren't profiling individual threads.
duke@435	290	static ThreadProfiler* thread_profiler;
duke@435	291	static ThreadProfiler* vm_thread_profiler;
duke@435	292
duke@435	293	static void allocate_table();
duke@435	294
duke@435	295	// The task that periodically interrupts things.
duke@435	296	friend class FlatProfilerTask;
duke@435	297	static FlatProfilerTask* task;
duke@435	298	static void record_vm_operation();
duke@435	299	static void record_vm_tick();
duke@435	300	static void record_thread_ticks();
duke@435	301
duke@435	302	// For interval analysis
duke@435	303	private:
duke@435	304	static int interval_ticks_previous; // delivered_ticks from the last interval
duke@435	305	static void interval_record_thread(ThreadProfiler* tp); // extract ticks from ThreadProfiler.
duke@435	306	static void interval_print(); // print interval data.
duke@435	307	static void interval_reset(); // reset interval data.
duke@435	308	enum {interval_print_size = 10};
duke@435	309	static IntervalData* interval_data;
duke@435	310	#endif // FPROF_KERNEL
duke@435	311	};