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xt_tic(3) Library Functions Manual xt_tic(3) NAME xt_tic() - Record current high-resolution clock time LIBRARY #include <xtend/time.h> -lxtend SYNOPSIS int xt_tic(struct timeval *start_time, struct rusage *start_usage) ARGUMENTS start_time A struct timeval structure populated by xt_tic() DESCRIPTION xt_tic() records the current time in a struct timeval structure. It is a simple wrapper around gettimeofday(2) meant for use with xt_toc(3), which reports elapsed time since the xt_tic() call. The xt_tic() and xt_toc() functions are used to accurately determine the elapsed time of a segment of code, such as a loop that is suspected to be costly. xt_tic() is inserted into the program just before the code and xt_toc() immediately after. RETURN VALUES The exit status of gettimeofday(2) EXAMPLES struct timeval start_time; struct rusage start_usage; xt_tic(&start_time, &start_usage); // Code for which elapsed time is to be measured for (c = 0; c < bignum; ++c) { ... } xt_toc(stderr, "Elapsed time for loop:n", &start_time, &start_usage); SEE ALSO xt_toc(3), xt_difftimeofday(3), gettimeofday(2) xt_tic(3)
NAME | LIBRARY | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURN VALUES | EXAMPLES | SEE ALSO
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