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multi-category.c
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multi-category.c
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/*
* Copyright (C) 2021 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _GNU_SOURCE
#define _GNU_SOURCE // for nanosleep
#endif
#include <assert.h>
#include <stdio.h>
#include <unistd.h>
#include <time.h>
#include "multi-category.h"
PERCETTO_CATEGORY_DEFINE(MY_PERCETTO_CATEGORIES);
PERCETTO_TRACK_DEFINE(squirrels, PERCETTO_TRACK_COUNTER);
static int trace_init(void) {
int ret;
ret = PERCETTO_INIT(PERCETTO_CLOCK_DONT_CARE);
if (ret != 0)
return ret;
ret = PERCETTO_REGISTER_TRACK(squirrels);
return ret;
}
static void test(void) {
TRACE_EVENT(cat, __func__);
TRACE_EVENT_BEGIN_DATA(dog, "test2", PERCETTO_S("begin"));
const char* test3 = "instant";
(void)test3; // avoid unused warning when trace macros are disabled.
TRACE_INSTANT(dog, test3);
TRACE_EVENT_END(dog);
// Counter
static int count = 1;
count++;
TRACE_COUNTER(dbg_or_dog, squirrels, count);
// Debug annotations
TRACE_DATUM(dog, PERCETTO_BOOL("have_squirrels", count));
TRACE_DATA(dog, "my_data", PERCETTO_DOUBLE("inverse", 1.0 / count),
PERCETTO_P(&count));
TRACE_DATA(dog, "more_data", PERCETTO_UINT("a", 2),
PERCETTO_INT("b", -5), PERCETTO_STRING("str", "debug string"));
}
int main(void) {
const int event_count = 100;
int i;
int ret;
ret = trace_init();
if (ret != 0) {
fprintf(stderr, "failed to init tracing: %d\n", ret);
return -1;
}
// Run forever to test consecutive trace sessions.
for (;;) {
for (i = 0; i < event_count; i++)
test();
struct timespec t = {0, 10000000};
nanosleep(&t, NULL);
}
return 0;
}