CVS commit: src

["Kamil Rytarowski" <kamil%netbsd.org@localhost>]

Module Name:    src
Committed By:   kamil
Date:           Tue Oct  4 09:41:41 UTC 2016

Modified Files:
        src/distrib/sets/lists/comp: mi
        src/include: time.h
        src/lib/libc/gen: Makefile.inc
Added Files:
        src/lib/libc/gen: timespec_get.3 timespec_get.c

Log Message:
Add timespec_get(3) in <time.h> and enable unconditionally struct timespec

These changes conforms to the C11 standard
References:
 - 7.27.1/3 Components of time (struct timespec)
 - 7.27.2.5 The timespec_get function

According to ISO/IEC 9899:201x (draft) <time.h> defines the timespec
structure and declares the timespec_get(3) function with TIME_UTC
definition.

According to a C++17 standard draft <ctime> offers the same interface in
the std:: namespace.

The timespec_get function modifies the timespec object pointed by ts
to hold the current calendar time in the given base. The standard notes
only the TIME_UTC base with implementation defined value, set it to 1
as zero is reserved for error handling. Once operation was successful this
function returns passed base, otherwise exits with zero.

The timespec struct was already part of the POSIX standard in <time.h>.

Enable this interface unconditionally in the header to allow to use it
in a code prior C11 and C++17 as an extension.

Review notes from <christos>


To generate a diff of this commit:
cvs rdiff -u -r1.2063 -r1.2064 src/distrib/sets/lists/comp/mi
cvs rdiff -u -r1.46 -r1.47 src/include/time.h
cvs rdiff -u -r1.195 -r1.196 src/lib/libc/gen/Makefile.inc
cvs rdiff -u -r0 -r1.1 src/lib/libc/gen/timespec_get.3 \
    src/lib/libc/gen/timespec_get.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.