02-16-2010
Quote:
Originally Posted by
darshan.ghumare
Thank you very much.
If it is shared between parent & child then I think there could be a race condition when both parent & child will try to write/read on it (Am I right?).
If there is then how this has been prevented?
These are system calls, so the kernel itself mediates it. They won't write at the same time, the kernel will impose an order. If they need a
specific order, of course, they should be synchronizing themselves via other means. Your code, for instance, synchronizes itself by waiting for the child to finish before writing "EFGH". If the parent instead waited
after it wrote, the order wouldn't be guaranteed to be dependable... You might get "EFGH" written first, or you might not.
Last edited by Corona688; 02-16-2010 at 04:23 PM..
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LEARN ABOUT DEBIAN
re-pcr
RE-PCR(1) General Commands Manual RE-PCR(1)
NAME
re-PCR -- Find sequence tagged sites (STS) in DNA sequences
SYNOPSIS
re-PCR [-hV] -p hash-file [-g gaps] [-n mism] [-lq] [primer ...]
re-PCR [-hV] -P hash-file [-g gaps] [-n mism] [-l] [-m margin] [-O+|-] [-C batchcnt] [-o outfile] [-r+|-] [primers-file ...]
re-PCR [-hV] -s hash-file [-g gaps] [-n mism] [-lq] [-m margin] [-o outfile] [-r+|-] [left right lo[-hi] [...]]
re-PCR [-hV] -S hash-file [-g gaps] [-n mism] [-lq] [-m margin] [-O+|-] [-C batchcnt] [-o outfile] [-r+|-] [stsfile ...]
DESCRIPTION
Implements reverse searching (called Reverse e-PCR) to make it feasible to search the human genome sequence and other large genomes by per-
forming STS and primer searches.
OPTIONS
-p=hash-file
Perform primer lookup using hash-file
-P=hash-file
Perform primer lookup using hash-file
-s=hash-file
Perform STS lookup using hash-file
-S=hash-file
Perform STS lookup using hash-file
-n=mism Set max allowed mismatches per primer for lookup
-g=gaps Set max allowed indels per primer for lookup
-m=margin Set variability for STS size for lookup
-l Use presize alignments (only if gaps>0)
-G Print alignments in comments
-d=min-max
Set default STS size
-r=+|- Enable/disable reverse STS lookup
-O=+|- Enable/disable syscall optimisation
-C=batchcnt
Set number of STSes per batch
-o=outfile
Set output file name
-q Quiet (no progress indicator)
EXAMPLE
famap -tN -b genome.famap org/chr_*.fa
fahash -b genome.hash -w 12 -f3 ${PWD}/genome.famap
re-PCR -s genome.hash -n1 -g1 ACTATTGATGATGA AGGTAGATGTTTTT 120-200
See famap(1) and fahash(1)
SEE ALSO
/usr/share/doc/ncbi-epcr/README.txt
bioperl(1), e-pcr(1), famap(1) and fahash(1)
AUTHORS
This manual page was written by Andreas Tille <tille@debian.org> for the Debian system (but may be used by others). Permission is granted
to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 any later version published by
the Free Software Foundation.
On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.
April 2008 RE-PCR(1)