8 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Is it possible to display the clock (timing) on the screen all the time. (3 Replies)
Discussion started by: vino.paal
3 Replies
2. Programming
#include<iostream>
#include<time.h>
using namespace std;
int main()
{
system("date");
clock_t start = clock();
int i=9*8;
while(i--)
{
int j=9999999;
while(j--);
}
clock_t end = clock();
double elapsed =... (4 Replies)
Discussion started by: johnbach
4 Replies
3. Solaris
Hi there!!!
Need your help in solving some tricky problems.
Since clock() as such is buggy on SUN OS 5 we have started using gettimeofday() in our RTOS applications based on Solaris 9.
The problems we actually encountered previously were - the applications kind of freeze/hang eternally on... (1 Reply)
Discussion started by: smanu
1 Replies
4. UNIX for Advanced & Expert Users
Hi
We had a AIX box built last year but was set to the correct GMT time, but using DST time zone. In march this year the clocks went forward without issues. (if I remember a couple of weeks early due to the DST zone)
This year we decided to change the clock to the correct time zone before... (0 Replies)
Discussion started by: markab2
0 Replies
5. UNIX for Dummies Questions & Answers
Hi,
Is there a chance that the clock() call returns 0 eternally???
Using BSD. My RTOS application freezes inconsistently only on particular hosts. When debugging it, I came to see that the RTOS timer does not tick at times. The underlying system call is clock() & it always returns zero when the... (4 Replies)
Discussion started by: smanu
4 Replies
6. Programming
Hey all,
i need a program to get the CPU ticks at certain points of my program. So, i thought about using the clock function, but i'm having a hard time figuring out how it really works. I wrote this simple program to try to understand it but it made me feel more confused:
#include <stdio.h>... (5 Replies)
Discussion started by: kastrup_carioca
5 Replies
7. UNIX Desktop Questions & Answers
Guys could you please tell me which appropriate command is used to set hardware (BIOS) clock so that the system keeps time when it reboots & how it's used. I use Linux
Thank you (2 Replies)
Discussion started by: joseph kembo
2 Replies
8. UNIX for Dummies Questions & Answers
Hey ppl, i was wonddering, in mandrake, how to get the clok to display the time in non-military format....hehe thank you im just tired of looking at 18:00 hehe thank you (2 Replies)
Discussion started by: LolapaloL
2 Replies
clock(3) Library Functions Manual clock(3)
NAME
clock - Reports CPU time used
LIBRARY
Standard C Library (libc.so, libc.a)
SYNOPSIS
#include <time.h>
clock_t clock (void);
STANDARDS
Interfaces documented on this reference page conform to industry standards as follows:
clock(): XPG4, XPG4-UNIX
Refer to the standards(5) reference page for more information about industry standards and associated tags.
DESCRIPTION
The clock() function reports the amount of processor time used by the calling process and each of its terminated child processes for which
a wait function has been executed. When a child process does not wait for its children, its child-process times are not included in its
times.
RETURN VALUES
The clock() function returns the amount of processor time (in microseconds) used since the first call to clock(). To convert the time to
seconds, divide it by CLOCKS_PER_SEC (which is defined to be 1,000,000 in <time.h>). If the processor time used is not available or its
value cannot be represented, the clock() function returns (clock_t)-1.
RELATED INFORMATION
Functions: ctime(3), getrusage(2), times(3), wait(2)
Standards: standards(5) delim off
clock(3)
