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Diffstat (limited to 'mcon/U/d_msync.U')
-rw-r--r-- | mcon/U/d_msync.U | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/mcon/U/d_msync.U b/mcon/U/d_msync.U new file mode 100644 index 0000000..978dc16 --- /dev/null +++ b/mcon/U/d_msync.U @@ -0,0 +1,49 @@ +?RCS: $Id: d_msync.U 167 2013-05-08 17:58:00Z rmanfredi $ +?RCS: +?RCS: Copyright (c) 1991-1997, 2004-2006, Raphael Manfredi +?RCS: +?RCS: You may redistribute only under the terms of the Artistic License, +?RCS: as specified in the README file that comes with the distribution. +?RCS: You may reuse parts of this distribution only within the terms of +?RCS: that same Artistic License; a copy of which may be found at the root +?RCS: of the source tree for dist 4.0. +?RCS: +?RCS: $Log: d_msync.U,v $ +?RCS: Revision 3.0.1.1 1993/12/15 08:19:17 ram +?RCS: patch15: created +?RCS: +?MAKE:d_msync: Trylink cat i_sysmman +?MAKE: -pick add $@ %< +?S:d_msync: +?S: This variable conditionally defines HAS_MSYNC if msync() is +?S: available to synchronize a mapped file. +?S:. +?C:HAS_MSYNC: +?C: This symbol, if defined, indicates that the msync system call is +?C: available to synchronize a mapped file. +?C:. +?H:#$d_msync HAS_MSYNC /**/ +?H:. +?LINT:set d_msync +: see if msync exists +$cat >try.c <<EOC +#$i_sysmman I_SYS_MMAN +#ifdef I_SYS_MMAN +#include <sys/mman.h> +#endif +int main(void) +{ + static int ret, flags; + static void *addr; + static size_t len; + flags |= MS_ASYNC; + flags |= MS_SYNC; + flags |= MS_INVALIDATE; + ret |= msync(addr, len, flags); + return ret ? 0 : 1; +} +EOC +cyn=msync +set d_msync +eval $trylink + |