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Diffstat (limited to 'innobase/include/ut0ut.h')
| -rw-r--r-- | innobase/include/ut0ut.h | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/innobase/include/ut0ut.h b/innobase/include/ut0ut.h new file mode 100644 index 00000000000..05d4f455c58 --- /dev/null +++ b/innobase/include/ut0ut.h @@ -0,0 +1,174 @@ +/********************************************************************** +Various utilities + +(c) 1994, 1995 Innobase Oy + +Created 1/20/1994 Heikki Tuuri +***********************************************************************/ + +#ifndef ut0ut_h +#define ut0ut_h + +#include <time.h> +#include <ctype.h> + +#include "univ.i" + + +typedef time_t ib_time_t; + +/********************************************************** +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. */ +UNIV_INLINE +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 a clock 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 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 */ +/***************************************************************** +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( +/*=========*/ + byte* buf, /* in: memory buffer */ + ulint len); /* in: length of the buffer */ +/***************************************************************** +Prints the contents of a memory buffer in hex and ascii. */ + +ulint +ut_sprintf_buf( +/*===========*/ + /* out: printed length in bytes */ + char* str, /* in: buffer to print to */ + byte* buf, /* in: memory buffer */ + ulint len); /* in: length of the buffer */ + + +#ifndef UNIV_NONINL +#include "ut0ut.ic" +#endif + +#endif + |