Commit 0af8360e authored by Dan Sheppard's avatar Dan Sheppard
Browse files

Flock-style locking for log files. Needed to automate parts of the Vega

pipeline and run them on the LSF.
parent f2c4ce31
......@@ -64,6 +64,7 @@ use POSIX qw(strftime);
use Cwd qw(abs_path);
use DBI;
use Data::Dumper;
use Fcntl qw(:flock SEEK_END);
my $species_c = 1; #counter to be used for each database connection made
......@@ -1191,6 +1192,30 @@ sub log {
=head2 lock_log
Description : Use flock-style locks to lock log and fastforward to end.
Useful if log is being written to by multiple processes.
sub lock_log {
my ($self) = @_;
flock($self->{'_log_filehandle'},LOCK_EX) || die "Cannot lock log";
seek($self->{'_log_filehandle'},0,SEEK_END) || die "Cannot seek log";
=head2 unlock_log
Description : Unlock log previously locked by lock_log.
sub unlock_log {
my ($self) = @_;
# flush is implicit in flock
flock($self->{'_log_filehandle'},LOCK_UN) || die "Cannot unlock log";
=head2 log_warning
Arg[1] : String $txt - the warning text to log
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