ut0ut.c
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上传日期:2007-04-14
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文件大小:3k
- /*******************************************************************
- Various utilities for Innobase.
- (c) 1994, 1995 Innobase Oy
- Created 5/11/1994 Heikki Tuuri
- ********************************************************************/
- #include "ut0ut.h"
- #ifdef UNIV_NONINL
- #include "ut0ut.ic"
- #endif
- #include "ut0sort.h"
- ibool ut_always_false = FALSE;
- /************************************************************
- The following function returns a clock time in milliseconds. */
- ulint
- ut_clock(void)
- {
- return((clock() * 1000) / CLOCKS_PER_SEC);
- }
- /**************************************************************
- 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)
- /*=========*/
- {
- return(time(NULL));
- }
- /**************************************************************
- 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 */
- {
- return(difftime(time2, time1));
- }
- /*****************************************************************
- 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 */
- {
- ulint i, j;
- j = 0;
- for (i = 0; i < delay * 50; i++) {
- j += i;
- }
- if (ut_always_false) {
- printf("%lu", j);
- }
-
- return(j);
- }
- /*****************************************************************
- 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 */
- {
- byte* data;
- ulint i;
- printf(" len %lu; hex ", len);
-
- data = buf;
- for (i = 0; i < len; i++) {
- printf("%02lx", (ulint)*data);
- data++;
- }
- printf("; asc ");
- data = buf;
- for (i = 0; i < len; i++) {
- if (isprint((char)(*data))) {
- printf("%c", (char)*data);
- }
- data++;
- }
- printf(";");
- }
- /*****************************************************************
- 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 */
- {
- byte* data;
- ulint n;
- ulint i;
- n = 0;
-
- n += sprintf(str + n, " len %lu; hex ", len);
-
- data = buf;
- for (i = 0; i < len; i++) {
- n += sprintf(str + n, "%02lx", (ulint)*data);
- data++;
- }
- n += sprintf(str + n, "; asc ");
- data = buf;
- for (i = 0; i < len; i++) {
- if (isprint((char)(*data))) {
- n += sprintf(str + n, "%c", (char)*data);
- }
-
- data++;
- }
- n += sprintf(str + n, ";");
- return(n);
- }
- /****************************************************************
- Sort function for ulint arrays. */
- void
- ut_ulint_sort(ulint* arr, ulint* aux_arr, ulint low, ulint high)
- /*============================================================*/
- {
- UT_SORT_FUNCTION_BODY(ut_ulint_sort, arr, aux_arr, low, high,
- ut_ulint_cmp);
- }