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src/share/vm/runtime/fprofiler.hpp@01147d8aac1d (annotated)

src/share/vm/runtime/fprofiler.hpp

Tue, 26 Apr 2011 14:04:43 -0400

author

coleenp

date

Tue, 26 Apr 2011 14:04:43 -0400

changeset 2804

01147d8aac1d

parent 2708

1d1603768966

child 3156

f08d439fab8c

permissions

-rw-r--r--

7009923: JSR 292: VM crash in JavaThread::last_frame
Summary: Handle stack overflow before the first frame is called, by printing out the called method and not walking the stack.
Reviewed-by: dholmes, phh, dsamersoff

duke@435	1	/*
trims@2708	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_RUNTIME_FPROFILER_HPP
stefank@2314	26	#define SHARE_VM_RUNTIME_FPROFILER_HPP
stefank@2314	27
stefank@2314	28	#include "runtime/timer.hpp"
stefank@2314	29	#ifdef TARGET_OS_FAMILY_linux
stefank@2314	30	# include "thread_linux.inline.hpp"
stefank@2314	31	#endif
stefank@2314	32	#ifdef TARGET_OS_FAMILY_solaris
stefank@2314	33	# include "thread_solaris.inline.hpp"
stefank@2314	34	#endif
stefank@2314	35	#ifdef TARGET_OS_FAMILY_windows
stefank@2314	36	# include "thread_windows.inline.hpp"
stefank@2314	37	#endif
stefank@2314	38
duke@435	39	// a simple flat profiler for Java
duke@435	40
duke@435	41
duke@435	42	// Forward declaration of classes defined in this header file
duke@435	43	class ThreadProfiler;
duke@435	44	class ThreadProfilerMark;
duke@435	45	class FlatProfiler;
duke@435	46	class IntervalData;
duke@435	47
duke@435	48	// Declarations of classes defined only in the implementation.
duke@435	49	class ProfilerNode;
duke@435	50	class FlatProfilerTask;
duke@435	51
duke@435	52	enum TickPosition {
duke@435	53	tp_code,
duke@435	54	tp_native
duke@435	55	};
duke@435	56
duke@435	57	// One of these guys is constructed as we enter interesting regions
duke@435	58	// and destructed as we exit the region. While we are in the region
duke@435	59	// ticks are allotted to the region.
duke@435	60	class ThreadProfilerMark: public StackObj {
duke@435	61	public:
duke@435	62	// For now, the only thread-specific region is the class loader.
duke@435	63	enum Region { noRegion, classLoaderRegion, extraRegion, maxRegion };
duke@435	64
duke@435	65	ThreadProfilerMark(Region) KERNEL_RETURN;
duke@435	66	~ThreadProfilerMark() KERNEL_RETURN;
duke@435	67
duke@435	68	private:
duke@435	69	ThreadProfiler* _pp;
duke@435	70	Region _r;
duke@435	71	};
duke@435	72
duke@435	73	#ifndef FPROF_KERNEL
duke@435	74
duke@435	75	class IntervalData VALUE_OBJ_CLASS_SPEC {
duke@435	76	// Just to keep these things all together
duke@435	77	private:
duke@435	78	int _interpreted;
duke@435	79	int _compiled;
duke@435	80	int _native;
duke@435	81	int _compiling;
duke@435	82	public:
duke@435	83	int interpreted() {
duke@435	84	return _interpreted;
duke@435	85	}
duke@435	86	int compiled() {
duke@435	87	return _compiled;
duke@435	88	}
duke@435	89	int native() {
duke@435	90	return _native;
duke@435	91	}
duke@435	92	int compiling() {
duke@435	93	return _compiling;
duke@435	94	}
duke@435	95	int total() {
duke@435	96	return (interpreted() + compiled() + native() + compiling());
duke@435	97	}
duke@435	98	void inc_interpreted() {
duke@435	99	_interpreted += 1;
duke@435	100	}
duke@435	101	void inc_compiled() {
duke@435	102	_compiled += 1;
duke@435	103	}
duke@435	104	void inc_native() {
duke@435	105	_native += 1;
duke@435	106	}
duke@435	107	void inc_compiling() {
duke@435	108	_compiling += 1;
duke@435	109	}
duke@435	110	void reset() {
duke@435	111	_interpreted = 0;
duke@435	112	_compiled = 0;
duke@435	113	_native = 0;
duke@435	114	_compiling = 0;
duke@435	115	}
duke@435	116	static void print_header(outputStream* st);
duke@435	117	void print_data(outputStream* st);
duke@435	118	};
duke@435	119	#endif // FPROF_KERNEL
duke@435	120
duke@435	121	class ThreadProfiler: public CHeapObj {
duke@435	122	public:
duke@435	123	ThreadProfiler() KERNEL_RETURN;
duke@435	124	~ThreadProfiler() KERNEL_RETURN;
duke@435	125
duke@435	126	// Resets the profiler
duke@435	127	void reset() KERNEL_RETURN;
duke@435	128
duke@435	129	// Activates the profiler for a certain thread
duke@435	130	void engage() KERNEL_RETURN;
duke@435	131
duke@435	132	// Deactivates the profiler
duke@435	133	void disengage() KERNEL_RETURN;
duke@435	134
duke@435	135	// Prints the collected profiling information
duke@435	136	void print(const char* thread_name) KERNEL_RETURN;
duke@435	137
duke@435	138	// Garbage Collection Support
duke@435	139	void oops_do(OopClosure* f) KERNEL_RETURN;
duke@435	140
duke@435	141	#ifndef FPROF_KERNEL
duke@435	142	private:
duke@435	143	// for recording ticks.
duke@435	144	friend class ProfilerNode;
duke@435	145	char* area_bottom; // preallocated area for pnodes
duke@435	146	char* area_top;
duke@435	147	char* area_limit;
duke@435	148	static int table_size;
duke@435	149	ProfilerNode** table;
duke@435	150
duke@435	151	private:
sgoldman@542	152	void record_interpreted_tick(JavaThread* thread, frame fr, TickPosition where, int* ticks);
duke@435	153	void record_compiled_tick (JavaThread* thread, frame fr, TickPosition where);
duke@435	154	void interpreted_update(methodOop method, TickPosition where);
duke@435	155	void compiled_update (methodOop method, TickPosition where);
duke@435	156	void stub_update (methodOop method, const char* name, TickPosition where);
duke@435	157	void adapter_update (TickPosition where);
duke@435	158
duke@435	159	void runtime_stub_update(const CodeBlob* stub, const char* name, TickPosition where);
duke@435	160	void unknown_compiled_update (const CodeBlob* cb, TickPosition where);
duke@435	161
duke@435	162	void vm_update (TickPosition where);
duke@435	163	void vm_update (const char* name, TickPosition where);
duke@435	164
duke@435	165	void record_tick_for_running_frame(JavaThread* thread, frame fr);
duke@435	166	void record_tick_for_calling_frame(JavaThread* thread, frame fr);
duke@435	167
duke@435	168	void initialize();
duke@435	169
duke@435	170	static int entry(int value);
duke@435	171
duke@435	172
duke@435	173	private:
duke@435	174	friend class FlatProfiler;
duke@435	175	void record_tick(JavaThread* thread);
duke@435	176	bool engaged;
duke@435	177	// so we can do percentages for this thread, and quick checks for activity
duke@435	178	int thread_ticks;
duke@435	179	int compiler_ticks;
duke@435	180	int interpreter_ticks;
duke@435	181
duke@435	182	public:
duke@435	183	void inc_thread_ticks() { thread_ticks += 1; }
duke@435	184
duke@435	185	private:
duke@435	186	friend class ThreadProfilerMark;
duke@435	187	// counters for thread-specific regions
duke@435	188	bool region_flag[ThreadProfilerMark::maxRegion];
duke@435	189	int class_loader_ticks;
duke@435	190	int extra_ticks;
duke@435	191
duke@435	192	private:
duke@435	193	// other thread-specific regions
duke@435	194	int blocked_ticks;
duke@435	195	enum UnknownTickSites {
duke@435	196	ut_null_method,
duke@435	197	ut_vtable_stubs,
duke@435	198	ut_running_frame,
duke@435	199	ut_calling_frame,
duke@435	200	ut_no_pc,
duke@435	201	ut_no_last_Java_frame,
duke@435	202	ut_unknown_thread_state,
duke@435	203	ut_end
duke@435	204	};
duke@435	205	int unknown_ticks_array[ut_end];
duke@435	206	int unknown_ticks() {
duke@435	207	int result = 0;
duke@435	208	for (int ut = 0; ut < ut_end; ut += 1) {
duke@435	209	result += unknown_ticks_array[ut];
duke@435	210	}
duke@435	211	return result;
duke@435	212	}
duke@435	213
duke@435	214	elapsedTimer timer;
duke@435	215
duke@435	216	// For interval timing
duke@435	217	private:
duke@435	218	IntervalData _interval_data;
duke@435	219	IntervalData interval_data() {
duke@435	220	return _interval_data;
duke@435	221	}
duke@435	222	IntervalData* interval_data_ref() {
duke@435	223	return &_interval_data;
duke@435	224	}
duke@435	225	#endif // FPROF_KERNEL
duke@435	226	};
duke@435	227
duke@435	228	class FlatProfiler: AllStatic {
duke@435	229	public:
duke@435	230	static void reset() KERNEL_RETURN ;
duke@435	231	static void engage(JavaThread* mainThread, bool fullProfile) KERNEL_RETURN ;
duke@435	232	static void disengage() KERNEL_RETURN ;
duke@435	233	static void print(int unused) KERNEL_RETURN ;
kamg@2511	234	static bool is_active() KERNEL_RETURN_(false) ;
duke@435	235
duke@435	236	// This is NULL if each thread has its own thread profiler,
duke@435	237	// else this is the single thread profiler used by all threads.
duke@435	238	// In particular it makes a difference during garbage collection,
duke@435	239	// where you only want to traverse each thread profiler once.
kamg@2511	240	static ThreadProfiler* get_thread_profiler() KERNEL_RETURN_(NULL);
duke@435	241
duke@435	242	// Garbage Collection Support
duke@435	243	static void oops_do(OopClosure* f) KERNEL_RETURN ;
duke@435	244
duke@435	245	// Support for disassembler to inspect the PCRecorder
duke@435	246
duke@435	247	// Returns the start address for a given pc
duke@435	248	// NULL is returned if the PCRecorder is inactive
kamg@2511	249	static address bucket_start_for(address pc) KERNEL_RETURN_(NULL);
duke@435	250
duke@435	251	enum { MillisecsPerTick = 10 }; // ms per profiling ticks
duke@435	252
duke@435	253	// Returns the number of ticks recorded for the bucket
duke@435	254	// pc belongs to.
kamg@2511	255	static int bucket_count_for(address pc) KERNEL_RETURN_(0);
duke@435	256
duke@435	257	#ifndef FPROF_KERNEL
duke@435	258
duke@435	259	private:
duke@435	260	static bool full_profile() {
duke@435	261	return full_profile_flag;
duke@435	262	}
duke@435	263
duke@435	264	friend class ThreadProfiler;
duke@435	265	// the following group of ticks cover everything that's not attributed to individual Java methods
duke@435	266	static int received_gc_ticks; // ticks during which gc was active
duke@435	267	static int vm_operation_ticks; // total ticks in vm_operations other than GC
duke@435	268	static int threads_lock_ticks; // the number of times we couldn't get the Threads_lock without blocking
duke@435	269	static int blocked_ticks; // ticks when the thread was blocked.
duke@435	270	static int class_loader_ticks; // total ticks in class loader
duke@435	271	static int extra_ticks; // total ticks an extra temporary measuring
duke@435	272	static int compiler_ticks; // total ticks in compilation
duke@435	273	static int interpreter_ticks; // ticks in unknown interpreted method
duke@435	274	static int deopt_ticks; // ticks in deoptimization
duke@435	275	static int unknown_ticks; // ticks that cannot be categorized
duke@435	276	static int received_ticks; // ticks that were received by task
duke@435	277	static int delivered_ticks; // ticks that were delivered by task
duke@435	278	static int non_method_ticks() {
duke@435	279	return
duke@435	280	( received_gc_ticks
duke@435	281	+ vm_operation_ticks
duke@435	282	+ deopt_ticks
duke@435	283	+ threads_lock_ticks
duke@435	284	+ blocked_ticks
duke@435	285	+ compiler_ticks
duke@435	286	+ interpreter_ticks
duke@435	287	+ unknown_ticks );
duke@435	288	}
duke@435	289	static elapsedTimer timer;
duke@435	290
duke@435	291	// Counts of each of the byte codes
duke@435	292	static int* bytecode_ticks;
duke@435	293	static int* bytecode_ticks_stub;
duke@435	294	static void print_byte_code_statistics();
duke@435	295
duke@435	296	// the ticks below are for continuous profiling (to adjust recompilation, etc.)
duke@435	297	static int all_ticks; // total count of ticks received so far
duke@435	298	static int all_int_ticks; // ticks in interpreter
duke@435	299	static int all_comp_ticks; // ticks in compiled code (+ native)
duke@435	300	static bool full_profile_flag; // collecting full profile?
duke@435	301
duke@435	302	// to accumulate thread-specific data
duke@435	303	// if we aren't profiling individual threads.
duke@435	304	static ThreadProfiler* thread_profiler;
duke@435	305	static ThreadProfiler* vm_thread_profiler;
duke@435	306
duke@435	307	static void allocate_table();
duke@435	308
duke@435	309	// The task that periodically interrupts things.
duke@435	310	friend class FlatProfilerTask;
duke@435	311	static FlatProfilerTask* task;
duke@435	312	static void record_vm_operation();
duke@435	313	static void record_vm_tick();
duke@435	314	static void record_thread_ticks();
duke@435	315
duke@435	316	// For interval analysis
duke@435	317	private:
duke@435	318	static int interval_ticks_previous; // delivered_ticks from the last interval
duke@435	319	static void interval_record_thread(ThreadProfiler* tp); // extract ticks from ThreadProfiler.
duke@435	320	static void interval_print(); // print interval data.
duke@435	321	static void interval_reset(); // reset interval data.
duke@435	322	enum {interval_print_size = 10};
duke@435	323	static IntervalData* interval_data;
duke@435	324	#endif // FPROF_KERNEL
duke@435	325	};
stefank@2314	326
stefank@2314	327	#endif // SHARE_VM_RUNTIME_FPROFILER_HPP