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Diffstat (limited to 'gnulib/doc/pastposix-functions/usleep.texi')
| m--------- | gnulib | 0 | ||||
| -rw-r--r-- | gnulib/doc/pastposix-functions/usleep.texi | 28 |
2 files changed, 28 insertions, 0 deletions
diff --git a/gnulib b/gnulib deleted file mode 160000 -Subproject 4fc10daa05477586fea99b6b3ca02a87d1102fa diff --git a/gnulib/doc/pastposix-functions/usleep.texi b/gnulib/doc/pastposix-functions/usleep.texi new file mode 100644 index 00000000..8ca0da9e --- /dev/null +++ b/gnulib/doc/pastposix-functions/usleep.texi @@ -0,0 +1,28 @@ +@node usleep +@section @code{usleep} +@findex usleep + +POSIX specification: @url{http://www.opengroup.org/susv3xsh/usleep.html} + +Gnulib module: usleep + +Portability problems fixed by Gnulib: +@itemize +@item +On some systems, @code{usleep} rejects attempts to sleep longer than 1 +second, as allowed by POSIX: +mingw. +@item +This function is missing on some platforms. However, the replacement +is designed to be lightweight, and may round to the neareset second; +use @code{select} or @code{nanosleep} if better resolution is needed: +IRIX 5.3, Solaris 2.4, older mingw, BeOS. +@end itemize + +Portability problems not fixed by Gnulib: +@itemize +@item +According to POSIX, the @code{usleep} function may interfere with the program's +use of the @code{SIGALRM} signal. On Linux, it doesn't; on other platforms, +it may. +@end itemize |