/* * Copyright (c) Artem Bityutskiy, 2007, 2008 * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See * the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #ifndef __MTD_UTILS_COMMON_H__ #define __MTD_UTILS_COMMON_H__ #include <stdio.h> #include <ctype.h> #include <string.h> #include <errno.h> /* * Note, the user is supposed to define its PROGRAM_NAME before including this * header. */ #ifdef __cplusplus extern "C" { #endif #define MIN(a ,b) ((a) < (b) ? (a) : (b)) #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) /* Verbose messages */ #define verbose(verbose, fmt, ...) do { \ if (verbose) \ printf(PROGRAM_NAME ": " fmt "\n", ##__VA_ARGS__); \ } while(0) /* Normal messages */ #define normsg(fmt, ...) do { \ printf(PROGRAM_NAME ": " fmt "\n", ##__VA_ARGS__); \ } while(0) #define normsg_cont(fmt, ...) do { \ printf(PROGRAM_NAME ": " fmt, ##__VA_ARGS__); \ } while(0) #define normsg_cont(fmt, ...) do { \ printf(PROGRAM_NAME ": " fmt, ##__VA_ARGS__); \ } while(0) /* Error messages */ #define errmsg(fmt, ...) ({ \ fprintf(stderr, PROGRAM_NAME ": error!: " fmt "\n", ##__VA_ARGS__); \ -1; \ }) /* System error messages */ #define sys_errmsg(fmt, ...) ({ \ int _err = errno; \ size_t _i; \ fprintf(stderr, PROGRAM_NAME ": error!: " fmt "\n", ##__VA_ARGS__); \ for (_i = 0; _i < sizeof(PROGRAM_NAME) + 1; _i++) \ fprintf(stderr, " "); \ fprintf(stderr, "error %d (%s)\n", _err, strerror(_err)); \ -1; \ }) /* Warnings */ #define warnmsg(fmt, ...) do { \ fprintf(stderr, PROGRAM_NAME ": warning!: " fmt "\n", ##__VA_ARGS__); \ } while(0) static inline int is_power_of_2(unsigned long long n) { return (n != 0 && ((n & (n - 1)) == 0)); } #ifdef __cplusplus } #endif #endif /* !__MTD_UTILS_COMMON_H__ */