USLEEP(3) BSD Library Functions Manual USLEEP(3)NAME
usleep -- suspend execution for interval of microseconds
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <unistd.h>
int
usleep(useconds_t microseconds);
DESCRIPTION
The usleep() function suspends execution of the calling process until either the number of microseconds specified by microseconds have
elapsed or a signal is delivered to the calling process and its action is to invoke a signal catching function or to terminate the process.
The suspension time may be longer than requested due to the scheduling of other activity by the system.
The microseconds argument must be less than 1,000,000. If the value of microseconds is 0, then the call has no effect.
RETURN VALUES
On successful completion, usleep() returns 0. Otherwise, it returns -1 and sets errno to indicate the error.
ERRORS
The usleep() function may fail if:
[EINVAL] The microseconds interval specified 1,000,000 or more microseconds.
SEE ALSO nanosleep(2), sleep(3)STANDARDS
The usleep() function conforms to X/Open Portability Guide Issue 4, Version 2 (``XPG4.2''). It later appeared in the POSIX standard, but in
IEEE Std 1003.1-2004 (``POSIX.1'') it was marked as legacy and the use of nanosleep(2) was recommended instead. The IEEE Std 1003.1-2008
(``POSIX.1'') revision removed usleep() from the specification.
HISTORY
The usleep() function appeared in 4.3BSD.
BSD April 29, 2010 BSD
Check Out this Related Man Page
USLEEP(3) BSD Library Functions Manual USLEEP(3)NAME
usleep -- suspend thread execution for an interval measured in microseconds
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <unistd.h>
int
usleep(useconds_t useconds);
DESCRIPTION
The usleep() function suspends execution of the calling thread until either useconds microseconds have elapsed or a signal is delivered to
the thread whose action is to invoke a signal-catching function or to terminate the thread or process. The actual time slept may be longer,
due to system latencies and possible limitations in the timer resolution of the hardware.
This function is implemented, using nanosleep(2), by pausing for useconds microseconds or until a signal occurs. Consequently, in this
implementation, sleeping has no effect on the state of process timers and there is no special handling for SIGALRM.
RETURN VALUES
The usleep() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate
the error.
ERRORS
The usleep() function will fail if:
[EINTR] A signal was delivered to the process and its action was to invoke a signal-catching function.
SEE ALSO nanosleep(2), sleep(3)HISTORY
The usleep() function appeared in 4.3BSD.
BSD February 13, 1998 BSD
Hi,
I'm using the command usleep (500000) when compiling C++ on the SunOS platform, but it does not compile on a OSF1 platform?
Any ideas?
Thanks (5 Replies)
Hi All,
Here's my question
I have a 385 MB file containing 5,000,000 records.
I need to read from the file and load into a table.
Initially i thought of doing it in a single thread (execution of a single program) but when calculated accounted 16 hours of time on a standard benchmark.
Hence... (5 Replies)
Hi!
I'm trying to sort a file.dat with the sort command. The data contained by file.dat is similar to the data set below:
100.000
99.000
110.000
55.000
113.000
33.000
25.000
9.000
15.000
It is relatively easy to sort the data in ascending or descending order, but the problem is... (11 Replies)
Hi All,
I am working with a fixed width file Forrmat.
C1 Number (10,3)
C2 Number (10,3)
e.g.
c1= 0000000100.000
c2= 0000000020.000
0000000100.0000000000020.000
I have to perform c1 - c2 . i.e. I want answer to be 0000000080.000. but I am loosing the leading zeros( only getting... (3 Replies)
Hi
I am having file like this
1 560017039 575052020 22-11-2003 8,290.00 709545 100239050 11
2 560017006 575052020 13-01-2008 20,000.00 709545 100246770 11
i want to convert it like
5600170395750520202211200300000008290000000000000709545010023905011... (8 Replies)
Hi all,
I have two files with the same number of lines
the first file is a.dat and looks like
0.000 1.000
1.000 2.000
...
the fields are tab separated
the second file is b.dat and looks like
1.2347 0.546
2.3564 0.321
...
the fields are tab separated
I would like to have a file c.dat... (4 Replies)
Hi All,
I need usleep command to use in one of my shell script. I am working on SunOS 5.9. Where usleep command is not available. Is there any way to use usleep command in SunOS.
Thanks In Advance,
chidhu (5 Replies)
Hi,
I need to delete the char " from a line but only the first 2
example:
JPY,0,XS0122118481,CCDO,IFI_CCDO,"2,210,000,000","2,210,000,000",0.00
result:
JPY,0,XS0122118481,CCDO,IFI_CCDO,2,210,000,000,"2,210,000,000",0.00
How may I go about doing this?
Thanks (2 Replies)
I have a very large file (10,000,000 lines), that contains a sample id and a property of that sample. I have another file that contains around 1,000,000 lines with sample ids that I want to remove from the original file (create a new file without these lines).
I know how to do this in Perl, but it... (9 Replies)
Hello all,
I'm in the process of writing a script, and I need to be able to add columns of time in the following format (time elapsed Net Backup logs):
000:01:03
000:00:58
000:00:49
Does anyone have a way of converting and/or adding timestamps such as these accurately?
Thanks in... (9 Replies)
is there any command in vi editor to turn this
986.000 4.026.000 775.328.625 9.319.003.000
986.000 4.036.000 775.328.625 9.318.803.000
986.000 4.046.000 775.328.625 9.318.603.000
986.000 4.056.000 775.328.625 9.318.403.000
become this... (5 Replies)
dear friends..
i have data :
20130603;ABCD;ABCD1;14030;51271;0.000;0.000;21.000
20130603;ABCD;ABCD2;14030;51272;4853.000;53591.000;40539.000
20130603;ABCD;ABCD3;14030;51273;38024.000;385068.000;396424.000
20130603;ABCD;EFGH1;14030;51334;285879.000;563964.000;141780.000... (4 Replies)
My OS is Windows 10 and I am using Cygwin.
The file 1 content is:
USE solution 2; -4.000
USE solution 3; -4.000
…
USE solution 29; -4.000
USE solution 30; -4.000
USE solution 31; -4.000
….
USE solution 89; -4.000
...
USE solution 202; -4.000
etc...
I need to replace... (8 Replies)