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1# Sequence 1 defaults to track for "t1" and extra_counter_values for "c1".
2packet {
3  trusted_packet_sequence_id: 1
4  timestamp: 0
5  incremental_state_cleared: true
6  track_descriptor {
7    uuid: 1
8    parent_uuid: 3
9    thread {
10      pid: 5
11      tid: 1
12      thread_name: "t1"
13    }
14  }
15  trace_packet_defaults {
16    track_event_defaults {
17      track_uuid: 1
18      extra_counter_track_uuids: 10  # Counter "c1", defined below.
19    }
20  }
21}
22
23# Process track for the thread.
24packet {
25  trusted_packet_sequence_id: 1
26  timestamp: 0
27  track_descriptor {
28    uuid: 3
29    process {
30      pid: 5
31      process_name: "Browser"
32    }
33    chrome_process {}
34  }
35}
36
37# Counter track "c1", a thread-scoped counter for "t1".
38packet {
39  trusted_packet_sequence_id: 1
40  timestamp: 0
41  track_descriptor {
42    uuid: 10
43    parent_uuid: 1
44    counter {
45      type: 1                # COUNTER_THREAD_TIME_NS.
46      unit_multiplier: 1000  # provided in ys.
47      is_incremental: true   # use delta encoding.
48    }
49  }
50}
51
52# Sequence 2 has no defaults. Define a new global counter "MySizeCounter".
53packet {
54  trusted_packet_sequence_id: 2
55  timestamp: 0
56  incremental_state_cleared: true
57  track_descriptor {
58    uuid: 11
59    name: "MySizeCounter"
60    counter {
61      unit: 3  # UNIT_SIZE_BYTES.
62    }
63  }
64}
65
66# Should appear on default track "t1" with extra_counter_values for "c1".
67packet {
68  trusted_packet_sequence_id: 1
69  sequence_flags: 2  # SEQ_NEEDS_INCREMENTAL_STATE
70  timestamp: 1000
71  track_event {
72    categories: "cat"
73    name: "event1_on_t1"
74    type: 1                     # TYPE_SLICE_BEGIN.
75    extra_counter_values: 1000  # First value, so effectively absolute.
76  }
77}
78
79# End for event above.
80packet {
81  trusted_packet_sequence_id: 1
82  sequence_flags: 2  # SEQ_NEEDS_INCREMENTAL_STATE
83  timestamp: 1100
84  track_event {
85    type: 2                   # TYPE_SLICE_END.
86    extra_counter_values: 10  # Absolute: 1010.
87  }
88}
89
90# Resetting incremental state on sequence 1 will restart counter at 0.
91packet {
92  trusted_packet_sequence_id: 1
93  timestamp: 2000
94  incremental_state_cleared: true
95  track_descriptor {
96    uuid: 1
97    parent_uuid: 3
98    thread {
99      pid: 5
100      tid: 1
101      thread_name: "t1"
102    }
103  }
104  trace_packet_defaults {
105    track_event_defaults {
106      track_uuid: 1
107      extra_counter_track_uuids: 10  # Counter "c1", defined below.
108    }
109  }
110}
111
112# Reemit process track for the thread.
113packet {
114  trusted_packet_sequence_id: 1
115  timestamp: 2000
116  track_descriptor {
117    uuid: 3
118    process {
119      pid: 5
120      process_name: "Browser"
121    }
122  }
123}
124
125# Reemit counter descriptor, too.
126packet {
127  trusted_packet_sequence_id: 1
128  timestamp: 2000
129  track_descriptor {
130    uuid: 10
131    parent_uuid: 1
132    counter {
133      type: 1                # COUNTER_THREAD_TIME_NS.
134      unit_multiplier: 1000  # provided in us.
135      is_incremental: true   # use delta encoding.
136    }
137  }
138}
139
140# Should appear on default track "t1" with extra_counter_values for "c1".
141packet {
142  trusted_packet_sequence_id: 1
143  sequence_flags: 2  # SEQ_NEEDS_INCREMENTAL_STATE
144  timestamp: 2000
145  track_event {
146    categories: "cat"
147    name: "event2_on_t1"
148    type: 1                     # TYPE_SLICE_BEGIN.
149    extra_counter_values: 2000  # First value after reset, so absolute.
150  }
151}
152
153# Nested value that happens to be emitted at the same timestamp but different
154# thread time value.
155packet {
156  trusted_packet_sequence_id: 1
157  sequence_flags: 2  # SEQ_NEEDS_INCREMENTAL_STATE
158  timestamp: 2000
159  track_event {
160    categories: "cat"
161    name: "event3_on_t1"
162    type: 1                     # TYPE_SLICE_BEGIN.
163    extra_counter_values: 10    # Absolute: 2010
164  }
165}
166
167# End for event above.
168packet {
169  trusted_packet_sequence_id: 1
170  sequence_flags: 2  # SEQ_NEEDS_INCREMENTAL_STATE
171  timestamp: 2200
172  track_event {
173    type: 2                   # TYPE_SLICE_END.
174    extra_counter_values: 10  # Absolute: 2020.
175  }
176}
177
178# End for event for "event2_on_t1".
179packet {
180  trusted_packet_sequence_id: 1
181  sequence_flags: 2  # SEQ_NEEDS_INCREMENTAL_STATE
182  timestamp: 2200
183  track_event {
184    type: 2                   # TYPE_SLICE_END.
185    extra_counter_values: 10  # Absolute: 2030.
186  }
187}
188
189# Counter type event for "MySizeCounter" on sequence 1.
190packet {
191  trusted_packet_sequence_id: 1
192  timestamp: 3000
193  track_event {
194    track_uuid: 11       # "MySizeCounter".
195    type: 4              # TYPE_COUNTER.
196    counter_value: 1024  # Absolute.
197  }
198}
199
200# Counter type event for "MySizeCounter" on sequence 2.
201packet {
202  trusted_packet_sequence_id: 2
203  timestamp: 3100
204  track_event {
205    track_uuid: 11       # "MySizeCounter".
206    type: 4              # TYPE_COUNTER.
207    counter_value: 2048  # Absolute.
208  }
209}
210
211# Override the default extra_counter_values.
212packet {
213  trusted_packet_sequence_id: 1
214  sequence_flags: 2  # SEQ_NEEDS_INCREMENTAL_STATE
215  timestamp: 4000
216  track_event {
217    categories: "cat"
218    name: "event4_on_t1"
219    type: 3                        # TYPE_INSTANT.
220    extra_counter_track_uuids: 10  # "c1".
221    extra_counter_track_uuids: 11  # "MySizeCounter".
222    extra_counter_values: 10       # Absolute: 2040.
223    extra_counter_values: 1024     # Absolute: 2040.
224  }
225}
226
227# Sequence 3 defaults to track for "t4" and uses legacy thread time and
228# instruction count.
229packet {
230  trusted_packet_sequence_id: 3
231  timestamp: 0
232  incremental_state_cleared: true
233  track_descriptor {
234    uuid: 4
235    parent_uuid: 3
236    thread {
237      pid: 5
238      tid: 4
239      thread_name: "t4"
240    }
241  }
242  trace_packet_defaults {
243    track_event_defaults {
244      track_uuid: 4
245    }
246  }
247}
248
249packet {
250  trusted_packet_sequence_id: 3
251  timestamp: 4000
252  track_event {
253    categories: "cat"
254    name: "event1_on_t3"
255    type: 1                        # TYPE_SLICE_BEGIN.
256    thread_time_absolute_us: 10
257    thread_instruction_count_absolute: 20
258  }
259}
260
261packet {
262  trusted_packet_sequence_id: 3
263  timestamp: 4100
264  track_event {
265    categories: "cat"
266    name: "event1_on_t3"
267    type: 2                        # TYPE_SLICE_END.
268    thread_time_absolute_us: 15
269    thread_instruction_count_absolute: 25
270  }
271}
272
273packet {
274  trusted_packet_sequence_id: 1
275  timestamp: 4200
276  incremental_state_cleared: true
277  track_descriptor {
278    uuid: 12
279    name: "MyDoubleCounter"
280    counter {
281    }
282  }
283}
284
285# Floating point counter value.
286packet {
287  trusted_packet_sequence_id: 1
288  timestamp: 4200
289  track_event {
290    track_uuid: 12                   # "MyDoubleCounter".
291    type: 4                          # TYPE_COUNTER.
292    double_counter_value: 3.1415926  # Floating point.
293  }
294}
295
296# Floating point extra counter value.
297packet {
298  trusted_packet_sequence_id: 1
299  sequence_flags: 2  # SEQ_NEEDS_INCREMENTAL_STATE
300  timestamp: 4300
301  track_event {
302    categories: "cat"
303    name: "float_counter_on_t1"
304    type: 3                               # TYPE_INSTANT.
305    extra_double_counter_track_uuids: 12  # "MyDoubleCounter".
306    extra_double_counter_values: 0.5
307  }
308}
309
310# Floating point extra counter value with sequence defaults (used together with
311# an integer counter).
312packet {
313  trusted_packet_sequence_id: 1
314  timestamp: 4400
315  trace_packet_defaults {
316    track_event_defaults {
317      track_uuid: 1
318      extra_counter_track_uuids: 11         # "MySizeCounter"
319      extra_double_counter_track_uuids: 12  # "MyDoubleCounter"
320    }
321  }
322}
323
324packet {
325  trusted_packet_sequence_id: 1
326  sequence_flags: 2  # SEQ_NEEDS_INCREMENTAL_STATE
327  timestamp: 4500
328  track_event {
329    categories: "cat"
330    name: "float_counter_on_t1"
331    type: 3                        # TYPE_INSTANT.
332    extra_counter_values: 4096
333    extra_double_counter_values: 2.71828
334  }
335}