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https://git.rwth-aachen.de/acs/public/villas/node/
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114 lines
3 KiB
C
114 lines
3 KiB
C
/** Various 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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* @file
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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 <sched.h>
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#include <string.h>
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#include <sys/types.h>
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#include "log.h"
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#ifdef __GNUC__
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#define EXPECT(x, v) __builtin_expect(x, v)
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#else
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#define EXPECT(x, v) (x)
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#endif
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/* Some color escape codes for pretty log messages */
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#define GRY(str) "\e[30m" str "\e[0m" /**< Print str in gray */
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#define RED(str) "\e[31m" str "\e[0m" /**< Print str in red */
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#define GRN(str) "\e[32m" str "\e[0m" /**< Print str in green */
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#define YEL(str) "\e[33m" str "\e[0m" /**< Print str in yellow */
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#define BLU(str) "\e[34m" str "\e[0m" /**< Print str in blue */
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#define MAG(str) "\e[35m" str "\e[0m" /**< Print str in magenta */
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#define CYN(str) "\e[36m" str "\e[0m" /**< Print str in cyan */
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#define WHT(str) "\e[37m" str "\e[0m" /**< Print str in white */
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#define BLD(str) "\e[1m" str "\e[0m" /**< Print str in bold */
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/* Alternate character set */
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#define ACS(chr) "\e(0" chr "\e(B"
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#define ACS_VERTICAL "|"
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#define ACS_HORIZONTAL ACS("\x71")
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//#define ACS_VERTICAL ACS("\x78")
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#define ACS_VERTRIGHT ACS("\x74")
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/* UTF-8 Line drawing characters */
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#define UTF8_BOX "\xE2\x96\x88"
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#define UTF8_VERTICAL "\xE2\x94\x82"
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#define UTF8_VERTRIGHT "\xE2\x94\x9C"
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/* CPP stringification */
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#define XSTR(x) STR(x)
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#define STR(x) #x
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/** Calculate the number of elements in an array. */
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#define ARRAY_LEN(a) ( sizeof (a) / sizeof (a)[0] )
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/** Swap two values by using a local third one. */
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#define SWAP(a, b) do { \
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__typeof__(a) tmp = a; \
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a = b; \
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b = tmp; \
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} while(0)
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/* Forward declarations */
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struct settings;
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struct timespec;
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/** The main thread id.
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* This is used to notify the main thread about
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* the program termination.
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* See error() macros.
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*/
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extern pthread_t _mtid;
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/** Safely append a format string to an existing string.
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*
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* This function is similar to strlcat() from BSD.
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*/
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int strap(char *dest, size_t size, const char *fmt, ...);
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/** Variable arguments (stdarg) version of strap() */
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int vstrap(char *dest, size_t size, const char *fmt, va_list va);
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/** Convert integer to cpu_set_t.
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*
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* @param set A cpu bitmask
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* @return The opaque cpu_set_t datatype
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*/
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cpu_set_t to_cpu_set(int set);
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/** Allocate and initialize memory. */
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void * alloc(size_t bytes);
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/** Get delta between two timespec structs */
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double timespec_delta(struct timespec *start, struct timespec *end);
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/** Get period as timespec from rate */
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struct timespec timespec_rate(double rate);
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/** A system(2) emulator with popen / pclose(2) and proper output handling */
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int system2(const char* cmd, ...);
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/** Call quit() in the main thread. */
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void die();
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/** Check assertion and exit if failed. */
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#define assert(exp) do { \
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if (EXPECT(!exp, 0)) { \
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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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#endif /* _UTILS_H_ */
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