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 <>
 perl/ | 31 ++++++++++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

diff --git a/perl/ b/perl/
index 7a252ef..204fdc6 100644
--- a/perl/
+++ b/perl/
@@ -61,7 +61,7 @@ require Exporter;
                 remote_refs prompt
                 credential credential_read credential_write
-                temp_acquire temp_release temp_reset temp_path);
+                temp_acquire temp_is_locked temp_release temp_reset temp_path);
@@ -1206,6 +1206,35 @@ sub temp_acquire {
+=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).
+sub temp_is_locked {
+       my ($self, $name) = _maybe_self(@_);
+       my $temp_fd = \$TEMP_FILEMAP{$name};
+       defined $$temp_fd && $$temp_fd->opened && 
 =item temp_release ( NAME )
 =item temp_release ( FILEHANDLE )

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