regtest/backends/__init__.py | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
New commits: commit fb1ffd2bf8a74e2cd08ee77f7813dfcf594a59ad Author: Thomas Freitag <[email protected]> Date: Sat Jan 7 11:47:19 2012 +0100 regtest: read stderr output before calling wait to fix a possible deadlock In the way the scripts starts it subprocesses, stderr becomes buffered for the subprocesses. And unforunately, when the buffer limit is reached, the subprocess suspends it work until it can print again on stderr. That's why the python script runs into a deadlock when the subprocess produces a lot of error messages. A small rearrange of the commands, first read the stderr output and then wait that the subprocess ends, will remove this deadlock. diff --git a/regtest/backends/__init__.py b/regtest/backends/__init__.py index 157170d..47985fb 100644 --- a/regtest/backends/__init__.py +++ b/regtest/backends/__init__.py @@ -173,11 +173,11 @@ class Backend: return True def _check_exit_status(self, p, out_path): - status = p.wait() - stderr = p.stderr.read() self.__create_stderr_file(stderr, out_path) + status = p.wait() + if not os.WIFEXITED(status): open(out_path + '.crashed', 'w').close() return False @@ -188,11 +188,11 @@ class Backend: return True def _check_exit_status2(self, p1, p2, out_path): + p1_stderr = p1.stderr.read() status1 = p1.wait() + p2_stderr = p2.stderr.read() status2 = p2.wait() - p1_stderr = p1.stderr.read() - p2_stderr = p2.stderr.read() if p1_stderr or p2_stderr: self.__create_stderr_file(p1_stderr + p2_stderr, out_path) _______________________________________________ poppler mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/poppler
