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Diffstat (limited to 'storage/innobase/include/ut0ut.h')
| -rw-r--r-- | storage/innobase/include/ut0ut.h | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/storage/innobase/include/ut0ut.h b/storage/innobase/include/ut0ut.h new file mode 100644 index 00000000000..8938957cd12 --- /dev/null +++ b/storage/innobase/include/ut0ut.h @@ -0,0 +1,254 @@ +/********************************************************************** +Various utilities + +(c) 1994, 1995 Innobase Oy + +Created 1/20/1994 Heikki Tuuri +***********************************************************************/ + +#ifndef ut0ut_h +#define ut0ut_h + +#include "univ.i" +#include <time.h> +#ifndef MYSQL_SERVER +#include <ctype.h> +#endif + +typedef time_t ib_time_t; + +/************************************************************ +Gets the high 32 bits in a ulint. That is makes a shift >> 32, +but since there seem to be compiler bugs in both gcc and Visual C++, +we do this by a special conversion. */ + +ulint +ut_get_high32( +/*==========*/ + /* out: a >> 32 */ + ulint a); /* in: ulint */ +/********************************************************** +Calculates the minimum of two ulints. */ +UNIV_INLINE +ulint +ut_min( +/*===*/ + /* out: minimum */ + ulint n1, /* in: first number */ + ulint n2); /* in: second number */ +/********************************************************** +Calculates the maximum of two ulints. */ +UNIV_INLINE +ulint +ut_max( +/*===*/ + /* out: maximum */ + ulint n1, /* in: first number */ + ulint n2); /* in: second number */ +/******************************************************************** +Calculates minimum of two ulint-pairs. */ +UNIV_INLINE +void +ut_pair_min( +/*========*/ + ulint* a, /* out: more significant part of minimum */ + ulint* b, /* out: less significant part of minimum */ + ulint a1, /* in: more significant part of first pair */ + ulint b1, /* in: less significant part of first pair */ + ulint a2, /* in: more significant part of second pair */ + ulint b2); /* in: less significant part of second pair */ +/********************************************************** +Compares two ulints. */ +UNIV_INLINE +int +ut_ulint_cmp( +/*=========*/ + /* out: 1 if a > b, 0 if a == b, -1 if a < b */ + ulint a, /* in: ulint */ + ulint b); /* in: ulint */ +/*********************************************************** +Compares two pairs of ulints. */ +UNIV_INLINE +int +ut_pair_cmp( +/*========*/ + /* out: -1 if a < b, 0 if a == b, + 1 if a > b */ + ulint a1, /* in: more significant part of first pair */ + ulint a2, /* in: less significant part of first pair */ + ulint b1, /* in: more significant part of second pair */ + ulint b2); /* in: less significant part of second pair */ +/***************************************************************** +Calculates fast the remainder when divided by a power of two. */ +UNIV_INLINE +ulint +ut_2pow_remainder( +/*==============*/ /* out: remainder */ + ulint n, /* in: number to be divided */ + ulint m); /* in: divisor; power of 2 */ +/***************************************************************** +Calculates fast value rounded to a multiple of a power of 2. */ +UNIV_INLINE +ulint +ut_2pow_round( +/*==========*/ /* out: value of n rounded down to nearest + multiple of m */ + ulint n, /* in: number to be rounded */ + ulint m); /* in: divisor; power of 2 */ +/***************************************************************** +Calculates fast the 2-logarithm of a number, rounded upward to an +integer. */ +UNIV_INLINE +ulint +ut_2_log( +/*=====*/ + /* out: logarithm in the base 2, rounded upward */ + ulint n); /* in: number */ +/***************************************************************** +Calculates 2 to power n. */ +UNIV_INLINE +ulint +ut_2_exp( +/*=====*/ + /* out: 2 to power n */ + ulint n); /* in: number */ +/***************************************************************** +Calculates fast the number rounded up to the nearest power of 2. */ + +ulint +ut_2_power_up( +/*==========*/ + /* out: first power of 2 which is >= n */ + ulint n); /* in: number != 0 */ +/**************************************************************** +Sort function for ulint arrays. */ + +void +ut_ulint_sort(ulint* arr, ulint* aux_arr, ulint low, ulint high); +/*============================================================*/ +/************************************************************ +The following function returns elapsed CPU time in milliseconds. */ + +ulint +ut_clock(void); +/************************************************************** +Returns system time. We do not specify the format of the time returned: +the only way to manipulate it is to use the function ut_difftime. */ + +ib_time_t +ut_time(void); +/*=========*/ +/************************************************************** +Returns system time. */ + +void +ut_usectime( +/*========*/ + ulint* sec, /* out: seconds since the Epoch */ + ulint* ms); /* out: microseconds since the Epoch+*sec */ +/************************************************************** +Returns the difference of two times in seconds. */ + +double +ut_difftime( +/*========*/ + /* out: time2 - time1 expressed in seconds */ + ib_time_t time2, /* in: time */ + ib_time_t time1); /* in: time */ +/************************************************************** +Prints a timestamp to a file. */ + +void +ut_print_timestamp( +/*===============*/ + FILE* file); /* in: file where to print */ +/************************************************************** +Sprintfs a timestamp to a buffer, 13..14 chars plus terminating NUL. */ + +void +ut_sprintf_timestamp( +/*=================*/ + char* buf); /* in: buffer where to sprintf */ +/************************************************************** +Sprintfs a timestamp to a buffer with no spaces and with ':' characters +replaced by '_'. */ + +void +ut_sprintf_timestamp_without_extra_chars( +/*=====================================*/ + char* buf); /* in: buffer where to sprintf */ +/************************************************************** +Returns current year, month, day. */ + +void +ut_get_year_month_day( +/*==================*/ + ulint* year, /* out: current year */ + ulint* month, /* out: month */ + ulint* day); /* out: day */ +/***************************************************************** +Runs an idle loop on CPU. The argument gives the desired delay +in microseconds on 100 MHz Pentium + Visual C++. */ + +ulint +ut_delay( +/*=====*/ + /* out: dummy value */ + ulint delay); /* in: delay in microseconds on 100 MHz Pentium */ +/***************************************************************** +Prints the contents of a memory buffer in hex and ascii. */ + +void +ut_print_buf( +/*=========*/ + FILE* file, /* in: file where to print */ + const byte* buf, /* in: memory buffer */ + ulint len); /* in: length of the buffer */ + +/************************************************************************** +Outputs a NUL-terminated file name, quoted with apostrophes. */ + +void +ut_print_filename( +/*==============*/ + FILE* f, /* in: output stream */ + const char* name); /* in: name to print */ + +/************************************************************************** +Outputs a NUL-terminated string, quoted as an SQL identifier. */ + +struct trx_struct; + +void +ut_print_name( +/*==========*/ + FILE* f, /* in: output stream */ + struct trx_struct*trx, /* in: transaction */ + const char* name); /* in: name to print */ + +/************************************************************************** +Outputs a fixed-length string, quoted as an SQL identifier. */ + +void +ut_print_namel( +/*==========*/ + FILE* f, /* in: output stream */ + struct trx_struct*trx, /* in: transaction (NULL=no quotes) */ + const char* name, /* in: name to print */ + ulint namelen);/* in: length of name */ + +/************************************************************************** +Catenate files. */ + +void +ut_copy_file( +/*=========*/ + FILE* dest, /* in: output file */ + FILE* src); /* in: input file to be appended to output */ + +#ifndef UNIV_NONINL +#include "ut0ut.ic" +#endif + +#endif + |