mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
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Steffen Vogel
49d13ccae4
git-svn-id: https://zerberus.eonerc.rwth-aachen.de:8443/svn/s2ss/trunk@30 8ec27952-4edc-4aab-86aa-e87bb2611832
90 lines
2 KiB
C
90 lines
2 KiB
C
/**
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* Some helper functions
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*
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* @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
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* @copyright 2014, Institute for Automation of Complex Power Systems, EONERC
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*/
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#ifndef _UTILS_H_
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#define _UTILS_H_
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#include <stdlib.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <string.h>
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#include <netinet/ip.h>
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enum log_level
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{
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DEBUG,
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INFO,
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WARN,
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ERROR
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};
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/**
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* @brief Logs variadic messages to stdout
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* @param lvl The log level
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* @param fmt The format string (printf alike)
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*/
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void print(enum log_level lvl, const char *fmt, ...);
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/**
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* @brief Resolve host/service name by local databases and/or nameservers
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*
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* @param addr A string containing the hostname/ip and port seperated by a colon
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* @param sa A pointer to the resolved address
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* @param flags Flags for gai
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* @return
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* - 0 on success
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*/
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int resolve(const char *addr, struct sockaddr_in *sa, int flags);
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/// Check assertion and exit if failed
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#define assert(exp) do { \
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if (!(exp)) { \
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print(ERROR, "Assertion failed: '%s' in %s, %s:%d", \
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#exp, __FUNCTION__, __BASE_FILE__, __LINE__); \
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exit(EXIT_FAILURE); \
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} } while (0)
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/// Printf alike debug message with level
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#define debug(lvl, msg, ...) do { \
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if (lvl <= V) \
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print(DEBUG, msg, ##__VA_ARGS__); \
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} while (0)
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/// Printf alike info message
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#define info(msg, ...) do { \
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print(INFO, msg, ##__VA_ARGS__); \
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} while (0)
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/// Printf alike warning message
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#define warn(msg, ...) do { \
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print(WARN, msg, ##__VA_ARGS__); \
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} while (0)
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/// Print error and exit
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#define error(msg, ...) do { \
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print(ERROR, msg, ##__VA_ARGS__); \
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exit(EXIT_FAILURE); \
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} while (0)
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/// Print error and strerror(errno)
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#define perror(msg, ...) do { \
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print(ERROR, msg ": %s", ##__VA_ARGS__, \
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strerror(errno)); \
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exit(EXIT_FAILURE); \
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} while (0)
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/// Print configuration error and exit
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#define cerror(c, msg, ...) do { \
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print(ERROR, msg " in %s:%u", ##__VA_ARGS__, \
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config_setting_source_file(c), \
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config_setting_source_line(c)); \
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exit(EXIT_FAILURE); \
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} while (0)
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#endif /* _UTILS_H_ */
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