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timer_create.2: NOTES: add "C library/kernel ABI differences" subheading 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2014-05-15 22:38:28 +02:00
parent c8c02fadd4
commit de76572d12
1 changed files with 10 additions and 9 deletions
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19
man2/timer_create.2
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@ -229,7 +229,16 @@ Return the overrun count for the last timer expiration.
.IP * .IP *
.BR timer_delete (2): .BR timer_delete (2):
Disarm and delete a timer. Disarm and delete a timer.
.PP
Since Linux 3.10, the
.IR /proc/[pid]/timers
file can be used to list the POSIX timers for the process with PID
.IR pid .
See
.BR proc (5)
for further information.
.\"
.SS C library/kernel ABI differences
Part of the implementation of the POSIX timers API is provided by glibc. Part of the implementation of the POSIX timers API is provided by glibc.
In particular: In particular:
.IP * 3 .IP * 3
@ -250,14 +259,6 @@ glibc provided an incomplete user-space implementation
timers only) using POSIX threads, timers only) using POSIX threads,
and current glibc falls back to this implementation on systems and current glibc falls back to this implementation on systems
running pre-2.6 Linux kernels. running pre-2.6 Linux kernels.
Since Linux 3.10, the
.IR /proc/[pid]/timers
file can be used to list the POSIX timers for the process with PID
.IR pid .
See
.BR proc (5)
for further information.
.SH EXAMPLE .SH EXAMPLE
The program below takes two arguments: a sleep period in seconds, The program below takes two arguments: a sleep period in seconds,
and a timer frequency in nanoseconds. and a timer frequency in nanoseconds.