pdm/perf.py

   1 import os, sys, resource, time, socket
   2
   3 class attrinfo(object):
   4     def __init__(self, desc = None):
   5         self.desc = desc
   6
   7 class perfobj(object):
   8     def __init__(self, *args, **kwargs):
   9         super(perfobj, self).__init__()
  10
  11     def pdm_protocols(self):
  12         return []
  13
  14 class simpleattr(perfobj):
  15     def __init__(self, func, info = None, *args, **kwargs):
  16         super(simpleattr, self).__init__(*args, **kwargs)
  17         self.func = func
  18         if info is None:
  19             info = attrinfo()
  20         self.info = info
  21
  22     def readattr(self):
  23         return self.func()
  24
  25     def attrinfo(self):
  26         return self.info
  27
  28     def pdm_protocols(self):
  29         return super(simpleattr, self).pdm_protocols() + ["attr"]
  30
  31 class valueattr(perfobj):
  32     def __init__(self, init, info = None, *args, **kwargs):
  33         super(valueattr, self).__init__(*args, **kwargs)
  34         self.value = init
  35         if info is None:
  36             info = attrinfo()
  37         self.info = info
  38
  39     def readattr(self):
  40         return self.value
  41
  42     def attrinfo(self):
  43         return self.info
  44
  45     def pdm_protocols(self):
  46         return super(valueattr, self).pdm_protocols() + ["attr"]
  47
  48
  49 class eventobj(perfobj):
  50     def __init__(self, *args, **kwargs):
  51         super(eventobj, self).__init__(*args, **kwargs)
  52         self.subscribers = set()
  53
  54     def subscribe(self, cb):
  55         if cb in self.subscribers:
  56             raise ValueError("Already subscribed")
  57         self.subscribers.add(cb)
  58
  59     def unsubscribe(self, cb):
  60         self.subscribers.remove(cb)
  61
  62     def notify(self, event):
  63         for cb in self.subscribers:
  64             try:
  65                 cb(event)
  66             except: pass
  67
  68     def pdm_protocols(self):
  69         return super(eventobj, self).pdm_protocols() + ["event"]
  70
  71 class staticdir(perfobj):
  72     def __init__(self, *args, **kwargs):
  73         super(staticdir, self).__init__(*args, **kwargs)
  74         self.map = {}
  75
  76     def __setitem__(self, name, ob):
  77         self.map[name] = ob
  78
  79     def __delitem__(self, name):
  80         del self.map[name]
  81
  82     def __getitem__(self, name):
  83         return self.map[name]
  84
  85     def get(self, name, default = None):
  86         return self.map.get(name, default)
  87
  88     def listdir(self):
  89         return self.map.keys()
  90
  91     def lookup(self, name):
  92         return self.map[name]
  93
  94     def pdm_protocols(self):
  95         return super(staticdir, self).pdm_protocols() + ["dir"]
  96
  97 sysres = staticdir()
  98 itime = time.time()
  99 ires = resource.getrusage(resource.RUSAGE_SELF)
 100 def ct():
 101     ru = resource.getrusage(resource.RUSAGE_SELF)
 102     return (ru.ru_utime - ires.ru_utime) + (ru.ru_stime - ires.ru_stime)
 103 sysres["realtime"] = simpleattr(func = lambda: time.time() - itime)
 104 sysres["cputime"] = simpleattr(func = ct)
 105 sysres["utime"] = simpleattr(func = lambda: resource.getrusage(resource.RUSAGE_SELF).ru_utime - ires.ru_utime)
 106 sysres["stime"] = simpleattr(func = lambda: resource.getrusage(resource.RUSAGE_SELF).ru_stime - ires.ru_stime)
 107 sysres["maxrss"] = simpleattr(func = lambda: resource.getrusage(resource.RUSAGE_SELF).ru_maxrss)
 108 sysres["rusage"] = simpleattr(func = lambda: resource.getrusage(resource.RUSAGE_SELF))
 109
 110 sysinfo = staticdir()
 111 sysinfo["pid"] = simpleattr(func = os.getpid)
 112 sysinfo["uname"] = simpleattr(func = os.uname)
 113 sysinfo["hostname"] = simpleattr(func = socket.gethostname)
 114 sysinfo["platform"] = valueattr(init = sys.platform)