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| xt_toc(3) | FreeBSD Library Functions Manual | xt_toc(3) |
LIBRARY
#include <xtend/time.h> -lxtend
SYNOPSIS
unsigned long xt_toc(FILE *stream, const char *message, struct timeval *start_time, struct rusage *start_usage)
ARGUMENTS
stream FILE stream to which output is sent message Optional message to print before time stats, or NULL start_time A struct timeval structure populated by xt_tic()
DESCRIPTION
xt_toc() reports the elapsed time, user time, and system time since start_time and start_usage, which should have been populated by xt_tic(3) at the beginning of the interval being measured. Time is reported in microseconds, and if elapsed time is greater than one second, days, hours, and seconds are also reported.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 time difference in microsecondsEXAMPLES
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_tic(3), difftimeofday(3), gettimeofday(2)
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