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1 /*
2  * Copyright (C) 2019 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef INCLUDE_PERFETTO_EXT_BASE_METATRACE_EVENTS_H_
18 #define INCLUDE_PERFETTO_EXT_BASE_METATRACE_EVENTS_H_
19 
20 #include <stdint.h>
21 
22 namespace perfetto {
23 namespace metatrace {
24 
25 enum Tags : uint32_t {
26   TAG_NONE = 0,
27   TAG_ANY = uint32_t(-1),
28   TAG_FTRACE = 1 << 0,
29   TAG_PROC_POLLERS = 1 << 1,
30   TAG_TRACE_WRITER = 1 << 2,
31   TAG_TRACE_SERVICE = 1 << 3,
32   TAG_PRODUCER = 1 << 4,
33 };
34 
35 // The macros below generate matching enums and arrays of string literals.
36 // This is to avoid maintaining string maps manually.
37 
38 // clang-format off
39 
40 // DO NOT remove or reshuffle items in this list, only append. The ID of these
41 // events are an ABI, the trace processor relies on these to open old traces.
42 #define PERFETTO_METATRACE_EVENTS(F) \
43   F(EVENT_ZERO_UNUSED), \
44   F(FTRACE_CPU_READER_READ), /*unused*/ \
45   F(FTRACE_DRAIN_CPUS), /*unused*/ \
46   F(FTRACE_UNBLOCK_READERS), /*unused*/ \
47   F(FTRACE_CPU_READ_NONBLOCK), /*unused*/ \
48   F(FTRACE_CPU_READ_BLOCK), /*unused*/ \
49   F(FTRACE_CPU_SPLICE_NONBLOCK), /*unused*/ \
50   F(FTRACE_CPU_SPLICE_BLOCK), /*unused*/ \
51   F(FTRACE_CPU_WAIT_CMD), /*unused*/ \
52   F(FTRACE_CPU_RUN_CYCLE), /*unused*/ \
53   F(FTRACE_CPU_FLUSH), \
54   F(FTRACE_CPU_DRAIN), /*unused*/ \
55   F(READ_SYS_STATS), \
56   F(PS_WRITE_ALL_PROCESSES), \
57   F(PS_ON_PIDS), \
58   F(PS_ON_RENAME_PIDS), \
59   F(PS_WRITE_ALL_PROCESS_STATS), \
60   F(TRACE_WRITER_COMMIT_STARTUP_WRITER_BATCH), \
61   F(FTRACE_READ_TICK), \
62   F(FTRACE_CPU_READ_CYCLE), \
63   F(FTRACE_CPU_READ_BATCH), \
64   F(KALLSYMS_PARSE), \
65   F(PROFILER_READ_TICK), \
66   F(PROFILER_READ_CPU), \
67   F(PROFILER_UNWIND_TICK), \
68   F(PROFILER_UNWIND_SAMPLE), \
69   F(PROFILER_UNWIND_INITIAL_ATTEMPT), \
70   F(PROFILER_UNWIND_ATTEMPT), \
71   F(PROFILER_MAPS_PARSE), \
72   F(PROFILER_MAPS_REPARSE), \
73   F(PROFILER_UNWIND_CACHE_CLEAR)
74 
75 // Append only, see above.
76 //
77 // Values that aren't used as counters:
78 // * FTRACE_SERVICE_COMMIT_DATA is a bit-packed representation of an event, see
79 //   tracing_service_impl.cc for the format.
80 // * PROFILER_UNWIND_CURRENT_PID represents the PID that is being unwound.
81 //
82 #define PERFETTO_METATRACE_COUNTERS(F) \
83   F(COUNTER_ZERO_UNUSED),\
84   F(FTRACE_PAGES_DRAINED), \
85   F(PS_PIDS_SCANNED), \
86   F(TRACE_SERVICE_COMMIT_DATA), \
87   F(PROFILER_UNWIND_QUEUE_SZ), \
88   F(PROFILER_UNWIND_CURRENT_PID)
89 
90 // clang-format on
91 
92 #define PERFETTO_METATRACE_IDENTITY(name) name
93 #define PERFETTO_METATRACE_TOSTRING(name) #name
94 
95 enum Events : uint16_t {
96   PERFETTO_METATRACE_EVENTS(PERFETTO_METATRACE_IDENTITY),
97   EVENTS_MAX
98 };
99 constexpr char const* kEventNames[] = {
100     PERFETTO_METATRACE_EVENTS(PERFETTO_METATRACE_TOSTRING)};
101 
102 enum Counters : uint16_t {
103   PERFETTO_METATRACE_COUNTERS(PERFETTO_METATRACE_IDENTITY),
104   COUNTERS_MAX
105 };
106 constexpr char const* kCounterNames[] = {
107     PERFETTO_METATRACE_COUNTERS(PERFETTO_METATRACE_TOSTRING)};
108 
SuppressUnusedVarsInAmalgamatedBuild()109 inline void SuppressUnusedVarsInAmalgamatedBuild() {
110   (void)kCounterNames;
111   (void)kEventNames;
112 }
113 
114 }  // namespace metatrace
115 }  // namespace perfetto
116 
117 #endif  // INCLUDE_PERFETTO_EXT_BASE_METATRACE_EVENTS_H_
118