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// SPDX-License-Identifier: BSD-3-Clause
/* Copyright 2020, Intel Corporation */
/*
* log-example.c -- an example of how to use and control behavior of the log.
*/
#include <stdarg.h>
#include <stdio.h>
#include "librpma.h"
extern void log_worker_is_doing_something(void);
static void
user_log_function(int level, const char *file_name, const int line_no,
const char *func_name, const char *message_format, ...)
{
if (((NULL != file_name) && (NULL == func_name)) ||
(NULL == message_format)) {
return;
}
if (fprintf(stderr, "Custom log handling: \n") < 0)
return;
if (NULL != file_name) {
if (fprintf(stderr, "%s %4d %s:\n", file_name, line_no,
func_name) < 0) {
return;
}
}
if (fprintf(stderr, "level: %d ", level) < 0)
return;
va_list args;
va_start(args, message_format);
if (vfprintf(stderr, message_format, args) < 0) {
va_end(args);
return;
}
va_end(args);
if (NULL != file_name)
fprintf(stderr, "\n");
}
int
main(int argc, char *argv[])
{
/*
* log messages to be produced to syslog as well as stderr
*/
printf("Let's write messages to stderr and syslog\n");
rpma_log_set_threshold(RPMA_LOG_THRESHOLD,
RPMA_LOG_LEVEL_DEBUG);
rpma_log_set_threshold(RPMA_LOG_THRESHOLD_AUX,
RPMA_LOG_LEVEL_DEBUG);
log_worker_is_doing_something();
printf(
"Use: \n$ sudo tail -n 60 /var/log/syslog | grep rpma\nto see messages in the syslog.");
/*
* log messages to be transferred only to custom user function
*/
rpma_log_set_function(user_log_function);
printf(
"Let's use custom log function to write messages to stderr\nNo message should be written to syslog\n");
log_worker_is_doing_something();
rpma_log_set_function(RPMA_LOG_USE_DEFAULT_FUNCTION);
return 0;
}
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