0,0 → 1,78 |
/* NetWare can not use this implementation of clock, since it does not |
have times or any similar function. It provides its own version of |
clock in clib.nlm. If we can not use clib.nlm, then we must write |
clock in sys/netware. */ |
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#ifdef CLOCK_PROVIDED |
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int _dummy_clock = 1; |
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#else |
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/* |
* clock.c |
* Original Author: G. Haley |
* |
* Determines the processor time used by the program since invocation. The time |
* in seconds is the value returned divided by the value of the macro CLK_TCK. |
* If the processor time used is not available, (clock_t) -1 is returned. |
*/ |
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/* |
FUNCTION |
<<clock>>---cumulative processor time |
|
INDEX |
clock |
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ANSI_SYNOPSIS |
#include <time.h> |
clock_t clock(void); |
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TRAD_SYNOPSIS |
#include <time.h> |
clock_t clock(); |
|
DESCRIPTION |
Calculates the best available approximation of the cumulative amount |
of time used by your program since it started. To convert the result |
into seconds, divide by the macro <<CLOCKS_PER_SEC>>. |
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RETURNS |
The amount of processor time used so far by your program, in units |
defined by the machine-dependent macro <<CLOCKS_PER_SEC>>. If no |
measurement is available, the result is (clock_t)<<-1>>. |
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PORTABILITY |
ANSI C requires <<clock>> and <<CLOCKS_PER_SEC>>. |
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Supporting OS subroutine required: <<times>>. |
*/ |
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#include <time.h> |
#include <sys/times.h> |
#include <reent.h> |
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clock_t |
_DEFUN (_times_r, (ptr, ptms), |
struct _reent *ptr _AND |
struct tms *ptms) |
{ |
return -1; |
} |
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clock_t |
clock () |
{ |
struct tms tim_s; |
clock_t res; |
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if ((res = (clock_t) _times_r (_REENT, &tim_s)) != -1) |
res = (clock_t) (tim_s.tms_utime + tim_s.tms_stime + |
tim_s.tms_cutime + tim_s.tms_cstime); |
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return res; |
} |
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#endif /* CLOCK_PROVIDED */ |