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/*
* lttng-clock-override-test.c
*
* SPDX-FileCopyrightText: 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
* SPDX-FileCopyrightText: 2015 Jonthan Rajotte <jonathan.rajotte-julien@efficios.com>
*
* SPDX-License-Identifier: MIT
*
* Based on lttng-clock-override-example.c from LTTng-ust example
*
*/
#include <common/compat/time.hpp>
#include <lttng/lttng-export.h>
#include <lttng/ust-clock.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static uint64_t plugin_read64(void)
{
/* Freeze time */
return 0;
}
static uint64_t plugin_freq(void)
{
return 1000; /* 1KHz clock (very coarse!) */
}
static int plugin_uuid(char *uuid)
{
const char myuuid[] = "83c63deb-7aa4-48fb-abda-946f400d76e6";
memcpy(uuid, myuuid, LTTNG_UST_UUID_STR_LEN);
return 0;
}
static const char *plugin_name(void)
{
return "lttng_test_clock_override";
}
static const char *plugin_description(void)
{
return "Freeze time with 1KHz for regression test";
}
LTTNG_EXPORT void lttng_ust_clock_plugin_init(void);
void lttng_ust_clock_plugin_init(void)
{
int ret;
ret = lttng_ust_trace_clock_set_read64_cb(plugin_read64);
if (ret) {
fprintf(stderr,
"Error setting clock override read64 callback: %s\n",
strerror(-ret));
goto error;
}
ret = lttng_ust_trace_clock_set_freq_cb(plugin_freq);
if (ret) {
fprintf(stderr, "Error setting clock override freq callback: %s\n", strerror(-ret));
goto error;
}
ret = lttng_ust_trace_clock_set_uuid_cb(plugin_uuid);
if (ret) {
fprintf(stderr, "Error setting clock override uuid callback: %s\n", strerror(-ret));
goto error;
}
ret = lttng_ust_trace_clock_set_name_cb(plugin_name);
if (ret) {
fprintf(stderr, "Error setting clock override name callback: %s\n", strerror(-ret));
goto error;
}
ret = lttng_ust_trace_clock_set_description_cb(plugin_description);
if (ret) {
fprintf(stderr,
"Error setting clock override description callback: %s\n",
strerror(-ret));
goto error;
}
ret = lttng_ust_enable_trace_clock_override();
if (ret) {
fprintf(stderr, "Error enabling clock override: %s\n", strerror(-ret));
goto error;
}
return;
error:
exit(EXIT_FAILURE);
}
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