1 /*
2 * Copyright (C) 2022 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 #include <unistd.h>
18
19 #include "perfetto/public/data_source.h"
20 #include "perfetto/public/producer.h"
21 #include "perfetto/public/protos/trace/test_event.pzc.h"
22 #include "perfetto/public/protos/trace/trace_packet.pzc.h"
23
24 static struct PerfettoDs custom = PERFETTO_DS_INIT();
25
main(void)26 int main(void) {
27 struct PerfettoProducerInitArgs args = PERFETTO_PRODUCER_INIT_ARGS_INIT();
28 args.backends = PERFETTO_BACKEND_SYSTEM;
29 PerfettoProducerInit(args);
30
31 PerfettoDsRegister(&custom, "com.example.custom_data_source",
32 PerfettoDsParamsDefault());
33
34 for (;;) {
35 PERFETTO_DS_TRACE(custom, ctx) {
36 struct PerfettoDsRootTracePacket root;
37 PerfettoDsTracerPacketBegin(&ctx, &root);
38
39 perfetto_protos_TracePacket_set_timestamp(&root.msg, 42);
40 {
41 struct perfetto_protos_TestEvent for_testing;
42 perfetto_protos_TracePacket_begin_for_testing(&root.msg, &for_testing);
43
44 perfetto_protos_TestEvent_set_cstr_str(&for_testing,
45 "This is a long string");
46 {
47 struct perfetto_protos_TestEvent_TestPayload payload;
48 perfetto_protos_TestEvent_begin_payload(&for_testing, &payload);
49
50 for (int i = 0; i < 1000; i++) {
51 perfetto_protos_TestEvent_TestPayload_set_cstr_str(&payload,
52 "nested");
53 }
54 perfetto_protos_TestEvent_end_payload(&for_testing, &payload);
55 }
56 perfetto_protos_TracePacket_end_for_testing(&root.msg, &for_testing);
57 }
58 PerfettoDsTracerPacketEnd(&ctx, &root);
59 }
60 sleep(1);
61 }
62 }
63