diff options
Diffstat (limited to 'man2/clock_getres.2')
| -rw-r--r-- | man2/clock_getres.2 | 41 |
1 files changed, 21 insertions, 20 deletions
diff --git a/man2/clock_getres.2 b/man2/clock_getres.2 index ae514e622e..86a0e9afee 100644 --- a/man2/clock_getres.2 +++ b/man2/clock_getres.2 @@ -327,25 +327,6 @@ T} Thread safety MT-Safe .ad .sp 1 .SH VERSIONS -These system calls first appeared in Linux 2.6. -.SH STANDARDS -POSIX.1-2001, POSIX.1-2008, SUSv2. -.PP -On POSIX systems on which these functions are available, the symbol -.B _POSIX_TIMERS -is defined in \fI<unistd.h>\fP to a value greater than 0. -The symbols -.BR _POSIX_MONOTONIC_CLOCK , -.BR _POSIX_CPUTIME , -.B _POSIX_THREAD_CPUTIME -indicate that -.BR CLOCK_MONOTONIC , -.BR CLOCK_PROCESS_CPUTIME_ID , -.B CLOCK_THREAD_CPUTIME_ID -are available. -(See also -.BR sysconf (3).) -.SH NOTES POSIX.1 specifies the following: .RS .PP @@ -370,12 +351,32 @@ clocks using On Linux, these clocks are not settable (i.e., no process has "appropriate privileges"). .\" See http://bugzilla.kernel.org/show_bug.cgi?id=11972 -.\" .SS C library/kernel differences On some architectures, an implementation of .BR clock_gettime () is provided in the .BR vdso (7). +.SH STANDARDS +POSIX.1-2008. +.SH HISTORY +POSIX.1-2001, SUSv2. +Linux 2.6. +.PP +On POSIX systems on which these functions are available, the symbol +.B _POSIX_TIMERS +is defined in \fI<unistd.h>\fP to a value greater than 0. +The symbols +.BR _POSIX_MONOTONIC_CLOCK , +.BR _POSIX_CPUTIME , +.B _POSIX_THREAD_CPUTIME +indicate that +.BR CLOCK_MONOTONIC , +.BR CLOCK_PROCESS_CPUTIME_ID , +.B CLOCK_THREAD_CPUTIME_ID +are available. +(See also +.BR sysconf (3).) +POSIX.1-2008 makes thes APIs mandatory. .\" .SS Historical note for SMP systems Before Linux added kernel support for |