Initial Commit

lib/apscheduler/schedulers/blocking.py

@@ -0,0 +1,32 @@
+from __future__ import absolute_import
+from threading import Event
+
+from apscheduler.schedulers.base import BaseScheduler
+
+
+class BlockingScheduler(BaseScheduler):
+    """
+    A scheduler that runs in the foreground (:meth:`~apscheduler.schedulers.base.BaseScheduler.start` will block).
+    """
+
+    MAX_WAIT_TIME = 4294967  # Maximum value accepted by Event.wait() on Windows
+
+    _event = None
+
+    def start(self):
+        super(BlockingScheduler, self).start()
+        self._event = Event()
+        self._main_loop()
+
+    def shutdown(self, wait=True):
+        super(BlockingScheduler, self).shutdown(wait)
+        self._event.set()
+
+    def _main_loop(self):
+        while self.running:
+            wait_seconds = self._process_jobs()
+            self._event.wait(wait_seconds if wait_seconds is not None else self.MAX_WAIT_TIME)
+            self._event.clear()
+
+    def wakeup(self):
+        self._event.set()