1 files changed, 47 insertions, 0 deletions
diff --git a/u1db/tests/commandline/__init__.py b/u1db/tests/commandline/__init__.py
new file mode 100644
index 00000000..007cecd3
--- /dev/null
+++ b/u1db/tests/commandline/__init__.py
@@ -0,0 +1,47 @@
+# Copyright 2011 Canonical Ltd.
+#
+# This file is part of u1db.
+#
+# u1db is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License version 3
+# as published by the Free Software Foundation.
+#
+# u1db is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with u1db.  If not, see <http://www.gnu.org/licenses/>.
+
+import errno
+import time
+
+
+def safe_close(process, timeout=0.1):
+    """Shutdown the process in the nicest fashion you can manage.
+
+    :param process: A subprocess.Popen object.
+    :param timeout: We'll try to send 'SIGTERM' but if the process is alive
+        longer that 'timeout', we'll send SIGKILL.
+    """
+    if process.poll() is not None:
+        return
+    try:
+        process.terminate()
+    except OSError, e:
+        if e.errno in (errno.ESRCH,):
+            # Process has exited
+            return
+    tend = time.time() + timeout
+    while time.time() < tend:
+        if process.poll() is not None:
+            return
+        time.sleep(0.01)
+    try:
+        process.kill()
+    except OSError, e:
+        if e.errno in (errno.ESRCH,):
+            # Process has exited
+            return
+    process.wait()