X-Git-Url: http://dolda2000.com/gitweb/?a=blobdiff_plain;f=pdm%2Fperf.py;h=7c0d561effaf32b8e33f2d9b8a55702af3ca441a;hb=HEAD;hp=786ab98f8e991d9cd2ff675fc4c7833d5d000276;hpb=5463509c7f8c15ae648eea644bea001a043d8b09;p=pdm.git diff --git a/pdm/perf.py b/pdm/perf.py index 786ab98..307dccb 100644 --- a/pdm/perf.py +++ b/pdm/perf.py @@ -5,46 +5,62 @@ for implementing PERF interfaces in common ways, and uses those classes to implement some standard PERF objects that can be used by PERF clients connecting to any PERF server. -See the documentation for pdm.srv.perf for a description of the +See the documentation for L{pdm.srv.perf} for a description of the various PERF interfaces. It contains two named PERF objects: - * sysres -- A directory containing the following objects pertaining - to the resource usage of the server process: - * realtime -- An attribute returning the amount of real time - since the PDM module was imported (which likely - coincides with the amount of time the server process - has been running). - * cputime -- An attribute returning the amount of CPU time - consumed by the server process (in both user and - kernel mode). - * utime -- An attribute returning the amount of CPU time the - server process has spent in user mode. - * stime -- An attribute returning the amount of CPU time the - server process has spent in kernel mode. - * maxrss -- An attribute returning the largest resident set size - the server process has used during its lifetime. - * rusage -- An attribute returning the current rusage of the - server process. -* sysinfo -- A directory containing the following objects pertaining - to the environment of the server process: - * pid -- An attribute returning the PID of the server process. - * uname -- An attribute returning the uname information of the - system. - * hostname -- An attribute returning the hostname of the system. - * platform -- An attribute returning the Python build platform. + - sysres -- A directory containing the following objects pertaining + to the resource usage of the server process: + + - realtime -- An attribute returning the amount of real time since + the PDM module was imported (which likely coincides with the + amount of time the server process has been running). + + - cputime -- An attribute returning the amount of CPU time + consumed by the server process (in both user and kernel mode). + + - utime -- An attribute returning the amount of CPU time the + server process has spent in user mode. + + - stime -- An attribute returning the amount of CPU time the + server process has spent in kernel mode. + + - maxrss -- An attribute returning the largest resident set size + the server process has used during its lifetime. + + - rusage -- An attribute returning the current rusage of the + server process. + + - sysinfo -- A directory containing the following objects pertaining + to the environment of the server process: + + - pid -- An attribute returning the PID of the server process. + + - uname -- An attribute returning the uname information of the + system. + + - hostname -- An attribute returning the hostname of the system. + + - platform -- An attribute returning the Python build platform. """ -import os, sys, resource, time, socket, threading +import os, sys, time, socket, threading __all__ = ["attrinfo", "simpleattr", "valueattr", "eventobj", "staticdir", "event", "procevent", "startevent", "finishevent"] +class error(Exception): + pass +class nosuchname(LookupError, error): + pass +class nosuchproto(error): + pass + class attrinfo(object): """The return value of the `attrinfo' method on `attr' objects as - described in pdm.srv.perf. + described in L{pdm.srv.perf}. Currently contains a single data field, `desc', which should have a human-readable description of the purpose of the attribute. @@ -54,7 +70,7 @@ class attrinfo(object): class perfobj(object): def __init__(self, *args, **kwargs): - super(perfobj, self).__init__() + super().__init__() def pdm_protocols(self): return [] @@ -65,7 +81,7 @@ 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() @@ -78,7 +94,7 @@ class simpleattr(perfobj): 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 @@ -86,7 +102,7 @@ class valueattr(perfobj): 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() @@ -99,7 +115,7 @@ class valueattr(perfobj): 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 @@ -107,7 +123,7 @@ class eventobj(perfobj): 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): @@ -120,13 +136,13 @@ class eventobj(perfobj): def notify(self, event): """Notify all subscribers with the given event object.""" - for cb in self.subscribers: + for cb in list(self.subscribers): try: cb(event) 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 @@ -134,7 +150,7 @@ class staticdir(perfobj): 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): @@ -150,13 +166,37 @@ class staticdir(perfobj): 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"] + +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): + 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) + return 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 @@ -200,7 +240,7 @@ 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: @@ -209,7 +249,7 @@ class procevent(event): 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 @@ -218,24 +258,39 @@ class finishevent(procevent): 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() itime = time.time() -ires = resource.getrusage(resource.RUSAGE_SELF) -def ct(): - ru = resource.getrusage(resource.RUSAGE_SELF) - return (ru.ru_utime - ires.ru_utime) + (ru.ru_stime - ires.ru_stime) sysres["realtime"] = simpleattr(func = lambda: time.time() - itime) -sysres["cputime"] = simpleattr(func = ct) -sysres["utime"] = simpleattr(func = lambda: resource.getrusage(resource.RUSAGE_SELF).ru_utime - ires.ru_utime) -sysres["stime"] = simpleattr(func = lambda: resource.getrusage(resource.RUSAGE_SELF).ru_stime - ires.ru_stime) -sysres["maxrss"] = simpleattr(func = lambda: resource.getrusage(resource.RUSAGE_SELF).ru_maxrss) -sysres["rusage"] = simpleattr(func = lambda: resource.getrusage(resource.RUSAGE_SELF)) +try: + import resource +except ImportError: + pass +else: + ires = resource.getrusage(resource.RUSAGE_SELF) + def ct(): + ru = resource.getrusage(resource.RUSAGE_SELF) + return (ru.ru_utime - ires.ru_utime) + (ru.ru_stime - ires.ru_stime) + sysres["cputime"] = simpleattr(func = ct) + sysres["utime"] = simpleattr(func = lambda: resource.getrusage(resource.RUSAGE_SELF).ru_utime - ires.ru_utime) + sysres["stime"] = simpleattr(func = lambda: resource.getrusage(resource.RUSAGE_SELF).ru_stime - ires.ru_stime) + sysres["maxrss"] = simpleattr(func = lambda: resource.getrusage(resource.RUSAGE_SELF).ru_maxrss) + sysres["rusage"] = simpleattr(func = lambda: resource.getrusage(resource.RUSAGE_SELF)) sysinfo = staticdir() sysinfo["pid"] = simpleattr(func = os.getpid) sysinfo["uname"] = simpleattr(func = os.uname) sysinfo["hostname"] = simpleattr(func = socket.gethostname) sysinfo["platform"] = valueattr(init = sys.platform) + +def reload(modname): + mod = sys.modules.get(modname) + if mod is None: + raise ValueError(modname) + import importlib + importlib.reload(mod) + +sysctl = simplefunc(exit=lambda status=0: os._exit(status), + reload=reload)