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author | Jim Meyering <jim@meyering.net> | 1999-12-25 22:15:23 +0000 |
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committer | Jim Meyering <jim@meyering.net> | 1999-12-25 22:15:23 +0000 |
commit | 0ac76a646bf5c84126310b52742176aaa5d3e591 (patch) | |
tree | c166831158db5ed823ac75c4847ad6e51aba9a98 /lib/nanosleep.c | |
parent | 64003d937bd510d7f3e0d279d9a351afd32a362e (diff) | |
download | coreutils-0ac76a646bf5c84126310b52742176aaa5d3e591.tar.xz |
*** empty log message ***
Diffstat (limited to 'lib/nanosleep.c')
-rw-r--r-- | lib/nanosleep.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/lib/nanosleep.c b/lib/nanosleep.c new file mode 100644 index 000000000..b833c01f4 --- /dev/null +++ b/lib/nanosleep.c @@ -0,0 +1,62 @@ +/* Provide a replacement for the POSIX nanosleep function. + Copyright (C) 1999 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* written by Jim Meyering */ + +#include <config.h> + +#include <sys/types.h> + +#include <time.h> +/* FIXME: is including both like this kosher? */ +#include <sys/time.h> + +static interrupted; + +/* Sleep for USEC microseconds. */ + +static void +usleep (const struct timespec *ts_delay) +{ + struct timeval tv_delay; + tv_delay.tv_sec = ts_delay->tv_sec; + tv_delay.tv_usec = 1000 * ts_delay->tv_nsec; + select (0, (void *) 0, (void *) 0, (void *) 0, tv_delay); +} + +int +nanosleep (const struct timespec *requested_delay, + struct timespec *remaining_delay) +{ + interrupted = 0; + + /* set up sig handler -- but maybe only do this the first time? */ + /* FIXME */ + + usleep (requested_delay); + + if (interrupted) + { + /* Calculate time remaining. */ + /* FIXME: the code in sleep doesn't use this, so there's no + rush to implement it. */ + } + + /* FIXME: Restore sig handler? */ + + return interrupted; +} |