Continuing refactoring of runners + status additions

anvil/shell.py

@@ -14,6 +14,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import errno
 import fileinput
 import getpass
 import grp
@@ -354,6 +355,20 @@ def _array_begins_with(haystack, needle):
     return True
 
 
+def is_running(pid):
+    # Check proc
+    if exists("/proc/%s" % (pid)):
+        return True
+    # Try a slightly more aggressive way...
+    try:
+        os.kill(pid, 0)
+    except OSError as e:
+        if e.errno == errno.EPERM:
+            return True
+        return False
+    return True
+
+
 def mkdirslist(path):
     LOG.debug("Determining potential paths to create for target path %r" % (path))
     dirs_possible = _explode_form_path(path)