projects / unix-history / blame
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1 | .\" Copyright (c) 1989 The Regents of the University of California. |
| 2 | .\" All rights reserved. | |
| 3 | .\" | |
| 4 | .\" Redistribution and use in source and binary forms are permitted | |
| 5 | .\" provided that the above copyright notice and this paragraph are | |
| 6 | .\" duplicated in all such forms and that any documentation, | |
| 7 | .\" advertising materials, and other materials related to such | |
| 8 | .\" distribution and use acknowledge that the software was developed | |
| 9 | .\" by the University of California, Berkeley. The name of the | |
| 10 | .\" University may not be used to endorse or promote products derived | |
| 11 | .\" from this software without specific prior written permission. | |
| 12 | .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
| 13 | .\" IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
| 14 | .\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
| 15 | .\" | |
| 16 | .\" @(#)clock.3 5.1 (Berkeley) %G% | |
| 17 | .\" | |
| 18 | .TH CLOCK 3 "" | |
| 19 | .AT 3 | |
| 20 | .SH NAME | |
| 21 | clock - determine processor time used | |
| 22 | .SH SYNOPSIS | |
| 23 | .nf | |
| 24 | #include <sys/types.h> | |
| 25 | ||
| 26 | clock_t | |
| 27 | clock() | |
| 28 | .fi | |
| 29 | .SH DESCRIPTION | |
| 30 | .I Clock | |
| 31 | returns the amount of processor time used since the process | |
| 32 | invocation, measured in | |
| 33 | .IR CLK_TCK 's. | |
| 34 | .PP | |
| 35 | On error, | |
| 36 | .I clock | |
| 37 | returns -1. | |
| 38 | .SH "SEE ALSO" | |
| 39 | getrusage(2) |