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Diffstat (limited to 'extra/mariabackup/common.h')
| -rw-r--r-- | extra/mariabackup/common.h | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/extra/mariabackup/common.h b/extra/mariabackup/common.h new file mode 100644 index 00000000..89b189e3 --- /dev/null +++ b/extra/mariabackup/common.h @@ -0,0 +1,189 @@ +/****************************************************** +Copyright (c) 2011-2013 Percona LLC and/or its affiliates. + +Common declarations for XtraBackup. + +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; version 2 of the License. + +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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA + +*******************************************************/ + +#ifndef XB_COMMON_H +#define XB_COMMON_H + +#include <my_global.h> +#include <mysql_version.h> +#include <fcntl.h> +#include <stdarg.h> +#include <my_sys.h> + + +/** Determine if (i) is a user tablespace id or not. */ +# define fil_is_user_tablespace_id(i) (i != 0 \ + && !srv_is_undo_tablespace(i)) + +#ifdef _MSC_VER +#define stat _stati64 +#define PATH_MAX MAX_PATH +#endif + +#ifndef HAVE_VASPRINTF +static inline int vasprintf(char **strp, const char *fmt, va_list args) +{ + int len; +#ifdef _MSC_VER + len = _vscprintf(fmt, args); +#else + len = vsnprintf(NULL, 0, fmt, args); +#endif + if (len < 0) + { + return -1; + } + *strp = (char *)malloc(len + 1); + if (!*strp) + { + return -1; + } + vsprintf(*strp, fmt, args); + return len; +} + +static inline int asprintf(char **strp, const char *fmt,...) +{ + va_list args; + va_start(args, fmt); + int len = vasprintf(strp, fmt, args); + va_end(args); + return len; +} +#endif + +#define xb_a(expr) \ + do { \ + if (!(expr)) { \ + fprintf(stderr,"Assertion \"%s\" failed at %s:%lu\n", \ + #expr, __FILE__, (ulong) __LINE__); \ + abort(); \ + } \ + } while (0); + +#ifdef XB_DEBUG +#define xb_ad(expr) xb_a(expr) +#else +#define xb_ad(expr) +#endif + +#define XB_DELTA_INFO_SUFFIX ".meta" + +static inline int msg1(uint thread_num, const char *prefix, const char *fmt, va_list args) +{ + int result; + time_t t = time(NULL); + char date[100]; + char *line; + strftime(date, sizeof(date), "%Y-%m-%d %H:%M:%S", localtime(&t)); + result = vasprintf(&line, fmt, args); + if (result != -1) { + if (fmt && fmt[strlen(fmt)] != '\n') + result = fprintf(stderr, "[%02u] %s%s %s\n", thread_num, prefix, date, line); + else + result = fprintf(stderr, "[%02u] %s%s %s", thread_num, prefix, date, line); + free(line); + } + return result; +} + +static inline ATTRIBUTE_FORMAT(printf, 2, 3) int msg(unsigned int thread_num, const char *fmt, ...) +{ + int result; + va_list args; + va_start(args, fmt); + result = msg1(thread_num,"", fmt, args); + va_end(args); + return result; +} + +static inline ATTRIBUTE_FORMAT(printf, 1, 2) int msg(const char *fmt, ...) +{ + int result; + va_list args; + va_start(args, fmt); + result = msg1(0, "", fmt, args); + va_end(args); + return result; +} + +static inline ATTRIBUTE_FORMAT(printf, 1,2) ATTRIBUTE_NORETURN void die(const char *fmt, ...) +{ + va_list args; + va_start(args, fmt); + msg1(0, "FATAL ERROR: ", fmt, args); + va_end(args); + fflush(stderr); + _exit(EXIT_FAILURE); +} + + +/* Use POSIX_FADV_NORMAL when available */ + +#ifdef POSIX_FADV_NORMAL +# define USE_POSIX_FADVISE +#else +# define POSIX_FADV_NORMAL +# define POSIX_FADV_SEQUENTIAL +# define POSIX_FADV_DONTNEED +# define posix_fadvise(a,b,c,d) do {} while(0) +#endif + +/*********************************************************************** +Computes bit shift for a given value. If the argument is not a power +of 2, returns 0.*/ +static inline unsigned get_bit_shift(size_t value) +{ + unsigned shift; + + if (value == 0) + return 0; + + for (shift = 0; !(value & 1); shift++) { + value >>= 1; + } + return (value >> 1) ? 0 : shift; +} + +/**************************************************************************** +Read 'len' bytes from 'fd'. It is identical to my_read(..., MYF(MY_FULL_IO)), +i.e. tries to combine partial reads into a single block of size 'len', except +that it bails out on EOF or error, and returns the number of successfully read +bytes instead. */ +static inline size_t +xb_read_full(File fd, uchar *buf, size_t len) +{ + size_t tlen = 0; + size_t tbytes; + + while (tlen < len) { + tbytes = my_read(fd, buf, len - tlen, MYF(MY_WME)); + if (tbytes == 0 || tbytes == MY_FILE_ERROR) { + break; + } + + buf += tbytes; + tlen += tbytes; + } + + return tlen; +} + +#endif |