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annotate src/share/vm/runtime/fprofiler.hpp @ 20347:3374ec4c4448
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author | amurillo |
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date | Tue, 26 Aug 2014 13:38:33 -0700 |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, 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 | |
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28 #include "utilities/macros.hpp" |
1972 | 29 #include "runtime/timer.hpp" |
30 | |
0 | 31 // a simple flat profiler for Java |
32 | |
33 | |
34 // Forward declaration of classes defined in this header file | |
35 class ThreadProfiler; | |
36 class ThreadProfilerMark; | |
37 class FlatProfiler; | |
38 class IntervalData; | |
39 | |
40 // Declarations of classes defined only in the implementation. | |
41 class ProfilerNode; | |
42 class FlatProfilerTask; | |
43 | |
44 enum TickPosition { | |
45 tp_code, | |
46 tp_native | |
47 }; | |
48 | |
49 // One of these guys is constructed as we enter interesting regions | |
50 // and destructed as we exit the region. While we are in the region | |
51 // ticks are allotted to the region. | |
52 class ThreadProfilerMark: public StackObj { | |
53 public: | |
54 // For now, the only thread-specific region is the class loader. | |
55 enum Region { noRegion, classLoaderRegion, extraRegion, maxRegion }; | |
56 | |
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57 ThreadProfilerMark(Region) NOT_FPROF_RETURN; |
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58 ~ThreadProfilerMark() NOT_FPROF_RETURN; |
0 | 59 |
60 private: | |
61 ThreadProfiler* _pp; | |
62 Region _r; | |
63 }; | |
64 | |
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65 #if INCLUDE_FPROF |
0 | 66 |
67 class IntervalData VALUE_OBJ_CLASS_SPEC { | |
68 // Just to keep these things all together | |
69 private: | |
70 int _interpreted; | |
71 int _compiled; | |
72 int _native; | |
73 int _compiling; | |
74 public: | |
75 int interpreted() { | |
76 return _interpreted; | |
77 } | |
78 int compiled() { | |
79 return _compiled; | |
80 } | |
81 int native() { | |
82 return _native; | |
83 } | |
84 int compiling() { | |
85 return _compiling; | |
86 } | |
87 int total() { | |
88 return (interpreted() + compiled() + native() + compiling()); | |
89 } | |
90 void inc_interpreted() { | |
91 _interpreted += 1; | |
92 } | |
93 void inc_compiled() { | |
94 _compiled += 1; | |
95 } | |
96 void inc_native() { | |
97 _native += 1; | |
98 } | |
99 void inc_compiling() { | |
100 _compiling += 1; | |
101 } | |
102 void reset() { | |
103 _interpreted = 0; | |
104 _compiled = 0; | |
105 _native = 0; | |
106 _compiling = 0; | |
107 } | |
108 static void print_header(outputStream* st); | |
109 void print_data(outputStream* st); | |
110 }; | |
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111 #endif // INCLUDE_FPROF |
0 | 112 |
6197 | 113 class ThreadProfiler: public CHeapObj<mtInternal> { |
0 | 114 public: |
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115 ThreadProfiler() NOT_FPROF_RETURN; |
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116 ~ThreadProfiler() NOT_FPROF_RETURN; |
0 | 117 |
118 // Resets the profiler | |
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119 void reset() NOT_FPROF_RETURN; |
0 | 120 |
121 // Activates the profiler for a certain thread | |
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122 void engage() NOT_FPROF_RETURN; |
0 | 123 |
124 // Deactivates the profiler | |
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125 void disengage() NOT_FPROF_RETURN; |
0 | 126 |
127 // Prints the collected profiling information | |
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128 void print(const char* thread_name) NOT_FPROF_RETURN; |
0 | 129 |
130 // Garbage Collection Support | |
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131 void oops_do(OopClosure* f) NOT_FPROF_RETURN; |
0 | 132 |
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133 #if INCLUDE_FPROF |
0 | 134 private: |
135 // for recording ticks. | |
136 friend class ProfilerNode; | |
137 char* area_bottom; // preallocated area for pnodes | |
138 char* area_top; | |
139 char* area_limit; | |
140 static int table_size; | |
141 ProfilerNode** table; | |
142 | |
143 private: | |
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144 void record_interpreted_tick(JavaThread* thread, frame fr, TickPosition where, int* ticks); |
0 | 145 void record_compiled_tick (JavaThread* thread, frame fr, TickPosition where); |
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146 void interpreted_update(Method* method, TickPosition where); |
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147 void compiled_update (Method* method, TickPosition where); |
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148 void stub_update (Method* method, const char* name, TickPosition where); |
0 | 149 void adapter_update (TickPosition where); |
150 | |
151 void runtime_stub_update(const CodeBlob* stub, const char* name, TickPosition where); | |
152 void unknown_compiled_update (const CodeBlob* cb, TickPosition where); | |
153 | |
154 void vm_update (TickPosition where); | |
155 void vm_update (const char* name, TickPosition where); | |
156 | |
157 void record_tick_for_running_frame(JavaThread* thread, frame fr); | |
158 void record_tick_for_calling_frame(JavaThread* thread, frame fr); | |
159 | |
160 void initialize(); | |
161 | |
162 static int entry(int value); | |
163 | |
164 | |
165 private: | |
166 friend class FlatProfiler; | |
167 void record_tick(JavaThread* thread); | |
168 bool engaged; | |
169 // so we can do percentages for this thread, and quick checks for activity | |
170 int thread_ticks; | |
171 int compiler_ticks; | |
172 int interpreter_ticks; | |
173 | |
174 public: | |
175 void inc_thread_ticks() { thread_ticks += 1; } | |
176 | |
177 private: | |
178 friend class ThreadProfilerMark; | |
179 // counters for thread-specific regions | |
180 bool region_flag[ThreadProfilerMark::maxRegion]; | |
181 int class_loader_ticks; | |
182 int extra_ticks; | |
183 | |
184 private: | |
185 // other thread-specific regions | |
186 int blocked_ticks; | |
187 enum UnknownTickSites { | |
188 ut_null_method, | |
189 ut_vtable_stubs, | |
190 ut_running_frame, | |
191 ut_calling_frame, | |
192 ut_no_pc, | |
193 ut_no_last_Java_frame, | |
194 ut_unknown_thread_state, | |
195 ut_end | |
196 }; | |
197 int unknown_ticks_array[ut_end]; | |
198 int unknown_ticks() { | |
199 int result = 0; | |
200 for (int ut = 0; ut < ut_end; ut += 1) { | |
201 result += unknown_ticks_array[ut]; | |
202 } | |
203 return result; | |
204 } | |
205 | |
206 elapsedTimer timer; | |
207 | |
208 // For interval timing | |
209 private: | |
210 IntervalData _interval_data; | |
211 IntervalData interval_data() { | |
212 return _interval_data; | |
213 } | |
214 IntervalData* interval_data_ref() { | |
215 return &_interval_data; | |
216 } | |
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217 #endif // INCLUDE_FPROF |
0 | 218 }; |
219 | |
220 class FlatProfiler: AllStatic { | |
221 public: | |
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222 static void reset() NOT_FPROF_RETURN ; |
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223 static void engage(JavaThread* mainThread, bool fullProfile) NOT_FPROF_RETURN ; |
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224 static void disengage() NOT_FPROF_RETURN ; |
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225 static void print(int unused) NOT_FPROF_RETURN ; |
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226 static bool is_active() NOT_FPROF_RETURN_(false) ; |
0 | 227 |
228 // This is NULL if each thread has its own thread profiler, | |
229 // else this is the single thread profiler used by all threads. | |
230 // In particular it makes a difference during garbage collection, | |
231 // where you only want to traverse each thread profiler once. | |
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232 static ThreadProfiler* get_thread_profiler() NOT_FPROF_RETURN_(NULL); |
0 | 233 |
234 // Garbage Collection Support | |
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235 static void oops_do(OopClosure* f) NOT_FPROF_RETURN ; |
0 | 236 |
237 // Support for disassembler to inspect the PCRecorder | |
238 | |
239 // Returns the start address for a given pc | |
240 // NULL is returned if the PCRecorder is inactive | |
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241 static address bucket_start_for(address pc) NOT_FPROF_RETURN_(NULL); |
0 | 242 |
243 enum { MillisecsPerTick = 10 }; // ms per profiling ticks | |
244 | |
245 // Returns the number of ticks recorded for the bucket | |
246 // pc belongs to. | |
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247 static int bucket_count_for(address pc) NOT_FPROF_RETURN_(0); |
0 | 248 |
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249 #if INCLUDE_FPROF |
0 | 250 |
251 private: | |
252 static bool full_profile() { | |
253 return full_profile_flag; | |
254 } | |
255 | |
256 friend class ThreadProfiler; | |
257 // the following group of ticks cover everything that's not attributed to individual Java methods | |
258 static int received_gc_ticks; // ticks during which gc was active | |
259 static int vm_operation_ticks; // total ticks in vm_operations other than GC | |
260 static int threads_lock_ticks; // the number of times we couldn't get the Threads_lock without blocking | |
261 static int blocked_ticks; // ticks when the thread was blocked. | |
262 static int class_loader_ticks; // total ticks in class loader | |
263 static int extra_ticks; // total ticks an extra temporary measuring | |
264 static int compiler_ticks; // total ticks in compilation | |
265 static int interpreter_ticks; // ticks in unknown interpreted method | |
266 static int deopt_ticks; // ticks in deoptimization | |
267 static int unknown_ticks; // ticks that cannot be categorized | |
268 static int received_ticks; // ticks that were received by task | |
269 static int delivered_ticks; // ticks that were delivered by task | |
270 static int non_method_ticks() { | |
271 return | |
272 ( received_gc_ticks | |
273 + vm_operation_ticks | |
274 + deopt_ticks | |
275 + threads_lock_ticks | |
276 + blocked_ticks | |
277 + compiler_ticks | |
278 + interpreter_ticks | |
279 + unknown_ticks ); | |
280 } | |
281 static elapsedTimer timer; | |
282 | |
283 // Counts of each of the byte codes | |
284 static int* bytecode_ticks; | |
285 static int* bytecode_ticks_stub; | |
286 static void print_byte_code_statistics(); | |
287 | |
288 // the ticks below are for continuous profiling (to adjust recompilation, etc.) | |
289 static int all_ticks; // total count of ticks received so far | |
290 static int all_int_ticks; // ticks in interpreter | |
291 static int all_comp_ticks; // ticks in compiled code (+ native) | |
292 static bool full_profile_flag; // collecting full profile? | |
293 | |
294 // to accumulate thread-specific data | |
295 // if we aren't profiling individual threads. | |
296 static ThreadProfiler* thread_profiler; | |
297 static ThreadProfiler* vm_thread_profiler; | |
298 | |
299 static void allocate_table(); | |
300 | |
301 // The task that periodically interrupts things. | |
302 friend class FlatProfilerTask; | |
303 static FlatProfilerTask* task; | |
304 static void record_vm_operation(); | |
305 static void record_vm_tick(); | |
306 static void record_thread_ticks(); | |
307 | |
308 // For interval analysis | |
309 private: | |
310 static int interval_ticks_previous; // delivered_ticks from the last interval | |
311 static void interval_record_thread(ThreadProfiler* tp); // extract ticks from ThreadProfiler. | |
312 static void interval_print(); // print interval data. | |
313 static void interval_reset(); // reset interval data. | |
314 enum {interval_print_size = 10}; | |
315 static IntervalData* interval_data; | |
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316 #endif // INCLUDE_FPROF |
0 | 317 }; |
1972 | 318 |
319 #endif // SHARE_VM_RUNTIME_FPROFILER_HPP |