Merge branch 'master' into python3

diff --combined pdm/perf.py
index bad3112,f0e6c89..fd4daa6
--- 1/pdm/perf.py
--- 2/pdm/perf.py
+++ b/pdm/perf.py
@@@ -63,7 -63,7 +63,7 @@@ class attrinfo(object)
  
  class perfobj(object):
      def __init__(self, *args, **kwargs):
 -        super(perfobj, self).__init__()
 +        super().__init__()
      
      def pdm_protocols(self):
          return []
@@@ -74,7 -74,7 +74,7 @@@ class simpleattr(perfobj)
      read.
      """
      def __init__(self, func, info = None, *args, **kwargs):
 -        super(simpleattr, self).__init__(*args, **kwargs)
 +        super().__init__(*args, **kwargs)
          self.func = func
          if info is None:
              info = attrinfo()
@@@ -87,7 -87,7 +87,7 @@@
          return self.info
  
      def pdm_protocols(self):
 -        return super(simpleattr, self).pdm_protocols() + ["attr"]
 +        return super().pdm_protocols() + ["attr"]
  
  class valueattr(perfobj):
      """An implementation of the `attr' interface, which is initialized
@@@ -95,7 -95,7 +95,7 @@@
      updates to the value are reflected in subsequent reads.
      """
      def __init__(self, init, info = None, *args, **kwargs):
 -        super(valueattr, self).__init__(*args, **kwargs)
 +        super().__init__(*args, **kwargs)
          self.value = init
          if info is None:
              info = attrinfo()
@@@ -108,7 -108,7 +108,7 @@@
          return self.info
  
      def pdm_protocols(self):
 -        return super(valueattr, self).pdm_protocols() + ["attr"]
 +        return super().pdm_protocols() + ["attr"]
  
  class eventobj(perfobj):
      """An implementation of the `event' interface. It keeps track of
@@@ -116,7 -116,7 +116,7 @@@
      subscribers when submitted with the `notify' method.
      """
      def __init__(self, *args, **kwargs):
 -        super(eventobj, self).__init__(*args, **kwargs)
 +        super().__init__(*args, **kwargs)
          self.subscribers = set()
  
      def subscribe(self, cb):
@@@ -135,7 -135,7 +135,7 @@@
              except: pass
  
      def pdm_protocols(self):
 -        return super(eventobj, self).pdm_protocols() + ["event"]
 +        return super().pdm_protocols() + ["event"]
  
  class staticdir(perfobj):
      """An implementation of the `dir' interface. Put other PERF
@@@ -143,7 -143,7 +143,7 @@@
      return them to requesting clients.
      """
      def __init__(self, *args, **kwargs):
 -        super(staticdir, self).__init__(*args, **kwargs)
 +        super().__init__(*args, **kwargs)
          self.map = {}
  
      def __setitem__(self, name, ob):
@@@ -159,14 -159,38 +159,38 @@@
          return self.map.get(name, default)
  
      def listdir(self):
 -        return self.map.keys()
 +        return list(self.map.keys())
  
      def lookup(self, name):
          return self.map[name]
  
      def pdm_protocols(self):
 -        return super(staticdir, self).pdm_protocols() + ["dir"]
 +        return super().pdm_protocols() + ["dir"]
  
 -        super(simplefunc, self).__init__(*args)
+ class simplefunc(perfobj):
+     """An implementation of the `invoke' interface. Put callables in
+     it using the normal dict assignment syntax, and it will call them
+     when invoked with the corresponding method name. Additionally, it
+     updates itself with any keyword-arguments it is initialized with."""
+     def __init__(self, *args, **kwargs):
 -        return super(simplefunc, self).pdm_protocols() + ["invoke"]
++        super().__init__(*args)
+         self.map = {}
+         self.map.update(kwargs)
+ 
+     def __setitem__(self, name, func):
+         self.map[name] = func
+ 
+     def __delitem__(self, name):
+         del self.map[name]
+ 
+     def invoke(self, method, *args, **kwargs):
+         if method not in self.map:
+             raise AttributeError(method)
+         self.map[method](*args, **kwargs)
+ 
+     def pdm_protocols(self):
++        return super().pdm_protocols() + ["invoke"]
+ 
  class event(object):
      """This class should be subclassed by all event objects sent via
      the `event' interface. Its main utility is that it keeps track of
@@@ -209,7 -233,7 +233,7 @@@ class procevent(event)
      `finishevent' emitted when the connection is closed.
      """
      def __init__(self, id):
 -        super(procevent, self).__init__()
 +        super().__init__()
          if isinstance(id, procevent):
              self.id = id.id
          else:
@@@ -218,7 -242,7 +242,7 @@@
  class startevent(procevent):
      """A subclass of `procevent'. See its documentation for details."""
      def __init__(self):
 -        super(startevent, self).__init__(getprocid())
 +        super().__init__(getprocid())
  
  class finishevent(procevent):
      """A subclass of `procevent'. Intended to be emitted when a
@@@ -227,7 -251,7 +251,7 @@@
      distinction is meaningful. The `start' parameter should be the
      `startevent' instance used when the process was initiated."""
      def __init__(self, start, aborted = False):
 -        super(finishevent, self).__init__(start)
 +        super().__init__(start)
          self.aborted = aborted
  
  sysres = staticdir()
@@@ -253,3 -277,5 +277,5 @@@ sysinfo["pid"] = simpleattr(func = os.g
  sysinfo["uname"] = simpleattr(func = os.uname)
  sysinfo["hostname"] = simpleattr(func = socket.gethostname)
  sysinfo["platform"] = valueattr(init = sys.platform)
+ 
+ sysctl = simplefunc(exit=lambda status=0: os._exit(status))