diff options
Diffstat (limited to 'man2/getitimer.2')
| -rw-r--r-- | man2/getitimer.2 | 52 |
1 files changed, 27 insertions, 25 deletions
diff --git a/man2/getitimer.2 b/man2/getitimer.2 index c207254f3..422a04e38 100644 --- a/man2/getitimer.2 +++ b/man2/getitimer.2 @@ -10,7 +10,7 @@ .\" 2005-04-06 mtk, Matthias Lang <matthias@corelatus.se> .\" Noted MAX_SEC_IN_JIFFIES ceiling .\" -.TH getitimer 2 2023-02-12 "Linux man-pages 6.03" +.TH getitimer 2 2023-05-03 "Linux man-pages 6.05.01" .SH NAME getitimer, setitimer \- get or set value of an interval timer .SH LIBRARY @@ -74,7 +74,7 @@ struct itimerval { struct timeval it_interval; /* Interval for periodic timer */ struct timeval it_value; /* Time until next expiration */ }; - +\& struct timeval { time_t tv_sec; /* seconds */ suseconds_t tv_usec; /* microseconds */ @@ -159,7 +159,32 @@ or (since Linux 2.6.22) one of the fields in the structure pointed to by .I new_value contains a value outside the range [0, 999999]. +.SH VERSIONS +The standards are silent on the meaning of the call: +.PP +.in +4n +.EX +setitimer(which, NULL, &old_value); +.EE +.in +.PP +Many systems (Solaris, the BSDs, and perhaps others) +treat this as equivalent to: +.PP +.in +4n +.EX +getitimer(which, &old_value); +.EE +.in +.PP +In Linux, this is treated as being equivalent to a call in which the +.I new_value +fields are zero; that is, the timer is disabled. +.IR "Don't use this Linux misfeature" : +it is nonportable and unnecessary. .SH STANDARDS +POSIX.1-2008. +.SH HISTORY POSIX.1-2001, SVr4, 4.4BSD (this call first appeared in 4.2BSD). POSIX.1-2008 marks .BR getitimer () @@ -194,29 +219,6 @@ and the three interfaces and .BR usleep (3) unspecified. -.PP -The standards are silent on the meaning of the call: -.PP -.in +4n -.EX -setitimer(which, NULL, &old_value); -.EE -.in -.PP -Many systems (Solaris, the BSDs, and perhaps others) -treat this as equivalent to: -.PP -.in +4n -.EX -getitimer(which, &old_value); -.EE -.in -.PP -In Linux, this is treated as being equivalent to a call in which the -.I new_value -fields are zero; that is, the timer is disabled. -.IR "Don't use this Linux misfeature" : -it is nonportable and unnecessary. .SH BUGS The generation and delivery of a signal are distinct, and only one instance of each of the signals listed above may be pending |