diff options
| -rw-r--r-- | pym/_emerge/AsynchronousLock.py | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/pym/_emerge/AsynchronousLock.py b/pym/_emerge/AsynchronousLock.py index fe9d36210..863c88b6a 100644 --- a/pym/_emerge/AsynchronousLock.py +++ b/pym/_emerge/AsynchronousLock.py @@ -23,12 +23,19 @@ class AsynchronousLock(AsynchronousTask): """ This uses the portage.locks module to acquire a lock asynchronously, using either a thread (if available) or a subprocess. + + The default behavior is to use a process instead of a thread, since + there is currently no way to interrupt a thread that is waiting for + a lock (notably, SIGINT doesn't work because python delivers all + signals to the main thread). """ __slots__ = ('path', 'scheduler',) + \ ('_imp', '_force_async', '_force_dummy', '_force_process', \ '_force_thread', '_waiting') + _use_process_by_default = True + def _start(self): if not self._force_async: @@ -43,7 +50,8 @@ class AsynchronousLock(AsynchronousTask): return if self._force_process or \ - (not self._force_thread and threading is dummy_threading): + (not self._force_thread and \ + (self._use_process_by_default or threading is dummy_threading)): self._imp = _LockProcess(path=self.path, scheduler=self.scheduler) else: self._imp = _LockThread(path=self.path, |