kernel
/
git
mirror of https://git.kernel.org/pub/scm/git/git.git
1
0
Fork 0
Code Releases Activity

Git.pm: add new temp_is_locked function 

The temp_is_locked function can be used to determine whether
or not a given name previously passed to temp_acquire is
currently locked.

Signed-off-by: Kyle J. McKay <mackyle@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
maint
Kyle J. McKay 2013-07-06 21:20:48 -07:00 committed by Junio C Hamano
parent edca415256
commit 4e63dcc86c
1 changed files with 31 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
perl/Git.pm
View File

@ -61,7 +61,7 @@ require Exporter;
remote_refs prompt
get_tz_offset
credential credential_read credential_write
temp_acquire temp_release temp_reset temp_path);
temp_acquire temp_is_locked temp_release temp_reset temp_path);


=head1 DESCRIPTION
@ -1206,6 +1206,35 @@ sub temp_acquire {
$temp_fd;
}

=item temp_is_locked ( NAME )

Returns true if the internal lock created by a previous C<temp_acquire()>
call with C<NAME> is still in effect.

When temp_acquire is called on a C<NAME>, it internally locks the temporary
file mapped to C<NAME>. That lock will not be released until C<temp_release()>
is called with either the original C<NAME> or the L<File::Handle> that was
returned from the original call to temp_acquire.

Subsequent attempts to call C<temp_acquire()> with the same C<NAME> will fail
unless there has been an intervening C<temp_release()> call for that C<NAME>
(or its corresponding L<File::Handle> that was returned by the original
C<temp_acquire()> call).

If true is returned by C<temp_is_locked()> for a C<NAME>, an attempt to
C<temp_acquire()> the same C<NAME> will cause an error unless
C<temp_release> is first called on that C<NAME> (or its corresponding
L<File::Handle> that was returned by the original C<temp_acquire()> call).

=cut

sub temp_is_locked {
my ($self, $name) = _maybe_self(@_);
my $temp_fd = \$TEMP_FILEMAP{$name};

defined $$temp_fd && $$temp_fd->opened && $TEMP_FILES{$$temp_fd}{locked};
}

=item temp_release ( NAME )

=item temp_release ( FILEHANDLE )
@ -1248,7 +1277,7 @@ sub _temp_cache {

my $temp_fd = \$TEMP_FILEMAP{$name};
if (defined $$temp_fd and $$temp_fd->opened) {
if ($TEMP_FILES{$$temp_fd}{locked}) {
if (temp_is_locked($name)) {
throw Error::Simple("Temp file with moniker '" .
$name . "' already in use");
}