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In Linux 2.6, the return value of times() changed

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Michael Kerrisk 2004-12-08 09:26:32 +00:00
parent 8b6aacb004
commit e263839c06
1 changed files with 6 additions and 5 deletions
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11
man2/times.2
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@ -30,6 +30,7 @@
.\" Added note on non-standard behaviour when SIGCHLD is ignored.
.\" Modified 2004-11-16, mtk, Noted that the non-conformance when
.\" SIGCHLD is being ignored is fixed in 2.6.9; other minor changes
.\" Modified 2004-12-08, mtk, in 2.6 times() return value changed
.\"
.TH TIMES 2 2002-06-14 "Linux" "Linux Programmer's Manual"
.SH NAME
@ -96,11 +97,11 @@ All times reported are in clock ticks.
.SH "RETURN VALUE"
.BR times ()
returns the number of clock ticks that have elapsed since
an arbitrary point in the past. For Linux this point is
the moment the system was booted.
.\" FIXME In Linux 2.6, the arbitrary point no longer appears
.\" to be since system boot -- what is it then? MTK, Nov 04
This return value may overflow the possible range of type
an arbitrary point in the past.
For Linux 2.4 and earlier this point is the moment the system was booted.
Since Linux 2.6, this point is (2^32/HZ) - 300 (i.e., about 429 million)
seconds before system boot time.
The return value may overflow the possible range of type
.I clock_t.
On error, \fI(clock_t) \-1\fP is returned, and
.I errno