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annotate src/share/vm/runtime/fprofiler.hpp @ 3763:e66f38dd58a9
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author | ysr |
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date | Wed, 08 Jun 2011 08:39:53 -0700 |
parents | 1d1603768966 |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_RUNTIME_FPROFILER_HPP |
26 #define SHARE_VM_RUNTIME_FPROFILER_HPP | |
27 | |
28 #include "runtime/timer.hpp" | |
29 #ifdef TARGET_OS_FAMILY_linux | |
30 # include "thread_linux.inline.hpp" | |
31 #endif | |
32 #ifdef TARGET_OS_FAMILY_solaris | |
33 # include "thread_solaris.inline.hpp" | |
34 #endif | |
35 #ifdef TARGET_OS_FAMILY_windows | |
36 # include "thread_windows.inline.hpp" | |
37 #endif | |
38 | |
0 | 39 // a simple flat profiler for Java |
40 | |
41 | |
42 // Forward declaration of classes defined in this header file | |
43 class ThreadProfiler; | |
44 class ThreadProfilerMark; | |
45 class FlatProfiler; | |
46 class IntervalData; | |
47 | |
48 // Declarations of classes defined only in the implementation. | |
49 class ProfilerNode; | |
50 class FlatProfilerTask; | |
51 | |
52 enum TickPosition { | |
53 tp_code, | |
54 tp_native | |
55 }; | |
56 | |
57 // One of these guys is constructed as we enter interesting regions | |
58 // and destructed as we exit the region. While we are in the region | |
59 // ticks are allotted to the region. | |
60 class ThreadProfilerMark: public StackObj { | |
61 public: | |
62 // For now, the only thread-specific region is the class loader. | |
63 enum Region { noRegion, classLoaderRegion, extraRegion, maxRegion }; | |
64 | |
65 ThreadProfilerMark(Region) KERNEL_RETURN; | |
66 ~ThreadProfilerMark() KERNEL_RETURN; | |
67 | |
68 private: | |
69 ThreadProfiler* _pp; | |
70 Region _r; | |
71 }; | |
72 | |
73 #ifndef FPROF_KERNEL | |
74 | |
75 class IntervalData VALUE_OBJ_CLASS_SPEC { | |
76 // Just to keep these things all together | |
77 private: | |
78 int _interpreted; | |
79 int _compiled; | |
80 int _native; | |
81 int _compiling; | |
82 public: | |
83 int interpreted() { | |
84 return _interpreted; | |
85 } | |
86 int compiled() { | |
87 return _compiled; | |
88 } | |
89 int native() { | |
90 return _native; | |
91 } | |
92 int compiling() { | |
93 return _compiling; | |
94 } | |
95 int total() { | |
96 return (interpreted() + compiled() + native() + compiling()); | |
97 } | |
98 void inc_interpreted() { | |
99 _interpreted += 1; | |
100 } | |
101 void inc_compiled() { | |
102 _compiled += 1; | |
103 } | |
104 void inc_native() { | |
105 _native += 1; | |
106 } | |
107 void inc_compiling() { | |
108 _compiling += 1; | |
109 } | |
110 void reset() { | |
111 _interpreted = 0; | |
112 _compiled = 0; | |
113 _native = 0; | |
114 _compiling = 0; | |
115 } | |
116 static void print_header(outputStream* st); | |
117 void print_data(outputStream* st); | |
118 }; | |
119 #endif // FPROF_KERNEL | |
120 | |
121 class ThreadProfiler: public CHeapObj { | |
122 public: | |
123 ThreadProfiler() KERNEL_RETURN; | |
124 ~ThreadProfiler() KERNEL_RETURN; | |
125 | |
126 // Resets the profiler | |
127 void reset() KERNEL_RETURN; | |
128 | |
129 // Activates the profiler for a certain thread | |
130 void engage() KERNEL_RETURN; | |
131 | |
132 // Deactivates the profiler | |
133 void disengage() KERNEL_RETURN; | |
134 | |
135 // Prints the collected profiling information | |
136 void print(const char* thread_name) KERNEL_RETURN; | |
137 | |
138 // Garbage Collection Support | |
139 void oops_do(OopClosure* f) KERNEL_RETURN; | |
140 | |
141 #ifndef FPROF_KERNEL | |
142 private: | |
143 // for recording ticks. | |
144 friend class ProfilerNode; | |
145 char* area_bottom; // preallocated area for pnodes | |
146 char* area_top; | |
147 char* area_limit; | |
148 static int table_size; | |
149 ProfilerNode** table; | |
150 | |
151 private: | |
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152 void record_interpreted_tick(JavaThread* thread, frame fr, TickPosition where, int* ticks); |
0 | 153 void record_compiled_tick (JavaThread* thread, frame fr, TickPosition where); |
154 void interpreted_update(methodOop method, TickPosition where); | |
155 void compiled_update (methodOop method, TickPosition where); | |
156 void stub_update (methodOop method, const char* name, TickPosition where); | |
157 void adapter_update (TickPosition where); | |
158 | |
159 void runtime_stub_update(const CodeBlob* stub, const char* name, TickPosition where); | |
160 void unknown_compiled_update (const CodeBlob* cb, TickPosition where); | |
161 | |
162 void vm_update (TickPosition where); | |
163 void vm_update (const char* name, TickPosition where); | |
164 | |
165 void record_tick_for_running_frame(JavaThread* thread, frame fr); | |
166 void record_tick_for_calling_frame(JavaThread* thread, frame fr); | |
167 | |
168 void initialize(); | |
169 | |
170 static int entry(int value); | |
171 | |
172 | |
173 private: | |
174 friend class FlatProfiler; | |
175 void record_tick(JavaThread* thread); | |
176 bool engaged; | |
177 // so we can do percentages for this thread, and quick checks for activity | |
178 int thread_ticks; | |
179 int compiler_ticks; | |
180 int interpreter_ticks; | |
181 | |
182 public: | |
183 void inc_thread_ticks() { thread_ticks += 1; } | |
184 | |
185 private: | |
186 friend class ThreadProfilerMark; | |
187 // counters for thread-specific regions | |
188 bool region_flag[ThreadProfilerMark::maxRegion]; | |
189 int class_loader_ticks; | |
190 int extra_ticks; | |
191 | |
192 private: | |
193 // other thread-specific regions | |
194 int blocked_ticks; | |
195 enum UnknownTickSites { | |
196 ut_null_method, | |
197 ut_vtable_stubs, | |
198 ut_running_frame, | |
199 ut_calling_frame, | |
200 ut_no_pc, | |
201 ut_no_last_Java_frame, | |
202 ut_unknown_thread_state, | |
203 ut_end | |
204 }; | |
205 int unknown_ticks_array[ut_end]; | |
206 int unknown_ticks() { | |
207 int result = 0; | |
208 for (int ut = 0; ut < ut_end; ut += 1) { | |
209 result += unknown_ticks_array[ut]; | |
210 } | |
211 return result; | |
212 } | |
213 | |
214 elapsedTimer timer; | |
215 | |
216 // For interval timing | |
217 private: | |
218 IntervalData _interval_data; | |
219 IntervalData interval_data() { | |
220 return _interval_data; | |
221 } | |
222 IntervalData* interval_data_ref() { | |
223 return &_interval_data; | |
224 } | |
225 #endif // FPROF_KERNEL | |
226 }; | |
227 | |
228 class FlatProfiler: AllStatic { | |
229 public: | |
230 static void reset() KERNEL_RETURN ; | |
231 static void engage(JavaThread* mainThread, bool fullProfile) KERNEL_RETURN ; | |
232 static void disengage() KERNEL_RETURN ; | |
233 static void print(int unused) KERNEL_RETURN ; | |
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234 static bool is_active() KERNEL_RETURN_(false) ; |
0 | 235 |
236 // This is NULL if each thread has its own thread profiler, | |
237 // else this is the single thread profiler used by all threads. | |
238 // In particular it makes a difference during garbage collection, | |
239 // where you only want to traverse each thread profiler once. | |
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240 static ThreadProfiler* get_thread_profiler() KERNEL_RETURN_(NULL); |
0 | 241 |
242 // Garbage Collection Support | |
243 static void oops_do(OopClosure* f) KERNEL_RETURN ; | |
244 | |
245 // Support for disassembler to inspect the PCRecorder | |
246 | |
247 // Returns the start address for a given pc | |
248 // NULL is returned if the PCRecorder is inactive | |
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249 static address bucket_start_for(address pc) KERNEL_RETURN_(NULL); |
0 | 250 |
251 enum { MillisecsPerTick = 10 }; // ms per profiling ticks | |
252 | |
253 // Returns the number of ticks recorded for the bucket | |
254 // pc belongs to. | |
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255 static int bucket_count_for(address pc) KERNEL_RETURN_(0); |
0 | 256 |
257 #ifndef FPROF_KERNEL | |
258 | |
259 private: | |
260 static bool full_profile() { | |
261 return full_profile_flag; | |
262 } | |
263 | |
264 friend class ThreadProfiler; | |
265 // the following group of ticks cover everything that's not attributed to individual Java methods | |
266 static int received_gc_ticks; // ticks during which gc was active | |
267 static int vm_operation_ticks; // total ticks in vm_operations other than GC | |
268 static int threads_lock_ticks; // the number of times we couldn't get the Threads_lock without blocking | |
269 static int blocked_ticks; // ticks when the thread was blocked. | |
270 static int class_loader_ticks; // total ticks in class loader | |
271 static int extra_ticks; // total ticks an extra temporary measuring | |
272 static int compiler_ticks; // total ticks in compilation | |
273 static int interpreter_ticks; // ticks in unknown interpreted method | |
274 static int deopt_ticks; // ticks in deoptimization | |
275 static int unknown_ticks; // ticks that cannot be categorized | |
276 static int received_ticks; // ticks that were received by task | |
277 static int delivered_ticks; // ticks that were delivered by task | |
278 static int non_method_ticks() { | |
279 return | |
280 ( received_gc_ticks | |
281 + vm_operation_ticks | |
282 + deopt_ticks | |
283 + threads_lock_ticks | |
284 + blocked_ticks | |
285 + compiler_ticks | |
286 + interpreter_ticks | |
287 + unknown_ticks ); | |
288 } | |
289 static elapsedTimer timer; | |
290 | |
291 // Counts of each of the byte codes | |
292 static int* bytecode_ticks; | |
293 static int* bytecode_ticks_stub; | |
294 static void print_byte_code_statistics(); | |
295 | |
296 // the ticks below are for continuous profiling (to adjust recompilation, etc.) | |
297 static int all_ticks; // total count of ticks received so far | |
298 static int all_int_ticks; // ticks in interpreter | |
299 static int all_comp_ticks; // ticks in compiled code (+ native) | |
300 static bool full_profile_flag; // collecting full profile? | |
301 | |
302 // to accumulate thread-specific data | |
303 // if we aren't profiling individual threads. | |
304 static ThreadProfiler* thread_profiler; | |
305 static ThreadProfiler* vm_thread_profiler; | |
306 | |
307 static void allocate_table(); | |
308 | |
309 // The task that periodically interrupts things. | |
310 friend class FlatProfilerTask; | |
311 static FlatProfilerTask* task; | |
312 static void record_vm_operation(); | |
313 static void record_vm_tick(); | |
314 static void record_thread_ticks(); | |
315 | |
316 // For interval analysis | |
317 private: | |
318 static int interval_ticks_previous; // delivered_ticks from the last interval | |
319 static void interval_record_thread(ThreadProfiler* tp); // extract ticks from ThreadProfiler. | |
320 static void interval_print(); // print interval data. | |
321 static void interval_reset(); // reset interval data. | |
322 enum {interval_print_size = 10}; | |
323 static IntervalData* interval_data; | |
324 #endif // FPROF_KERNEL | |
325 }; | |
1972 | 326 |
327 #endif // SHARE_VM_RUNTIME_FPROFILER_HPP |