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| author | des <des@FreeBSD.org> | 2004-01-15 10:15:04 +0000 |
|---|---|---|
| committer | des <des@FreeBSD.org> | 2004-01-15 10:15:04 +0000 |
| commit | f270054cd314ee2f822fb6cb1e04452749d4c214 (patch) | |
| tree | 17db0a692fa4e5f4c64cebaf9205ad10ff29301e /sys/kern/sys_pipe.c | |
| parent | eb1be5f02d7c125633ee09a54f1c6bbefbd1348a (diff) | |
| download | FreeBSD-src-f270054cd314ee2f822fb6cb1e04452749d4c214.zip FreeBSD-src-f270054cd314ee2f822fb6cb1e04452749d4c214.tar.gz | |
New file descriptor allocation code, derived from similar code introduced
in OpenBSD by Niels Provos. The patch introduces a bitmap of allocated
file descriptors which is used to locate available descriptors when a new
one is needed. It also moves the task of growing the file descriptor table
out of fdalloc(), reducing complexity in both fdalloc() and do_dup().
Debts of gratitude are owed to tjr@ (who provided the original patch on
which this work is based), grog@ (for the gdb(4) man page) and rwatson@
(for assistance with pxeboot(8)).
Diffstat (limited to 'sys/kern/sys_pipe.c')
| -rw-r--r-- | sys/kern/sys_pipe.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/kern/sys_pipe.c b/sys/kern/sys_pipe.c index ced206e..602def5 100644 --- a/sys/kern/sys_pipe.c +++ b/sys/kern/sys_pipe.c @@ -258,6 +258,7 @@ pipe(td, uap) FILEDESC_LOCK(fdp); if (fdp->fd_ofiles[td->td_retval[0]] == rf) { fdp->fd_ofiles[td->td_retval[0]] = NULL; + fdunused(fdp, td->td_retval[0]); FILEDESC_UNLOCK(fdp); fdrop(rf, td); } else { |
