@Leonel you should make a PR of this. We have a program profiler, a memory
profiler would be great!
@niplhod do you know if is there a way to integrate memory profiling in
travis-ci??
Il giorno lunedì 2 febbraio 2015 00:35:50 UTC+1, Leonel Câmara ha scritto:
>
> If you have pool_size defined can you tell me if putting pool_size=0 in
> your DAL solves this problem?
>
> Anyway I got really interested in this, for some unknown to me reason, and
> decided to create a *VERY CRUDE* decorator to memory check your
> controller functions for leaks, I guess with time we could refine this if
> there's a desire to have a memory leak checker for controller functions in
> web2py. I hope it helps, if it doesn't at least it was fun to code.
>
>
> def memcheck(f):
> """
> A crude decorator to memory check your web2py controller's functions.
>
>
> False positives are possible if your controller function returns less
> than
> common stuff.
>
>
> Put it in your models and then decorate your controller functions.
>
>
> example:
>
>
> @memcheck
> def index():
> response.flash = T("Welcome to web2py!")
> return dict(message=T('Hello World'))
>
>
> BEERWARE - You should try to buy Leonel Câmara beers!
> """
> from functools import wraps
> from collections import Counter, Mapping, Iterable
> from gluon.languages import lazyT
> from gc import get_objects
>
>
> def get_value_objects(v):
> """
> Generate an object for each value in a value including itself.
> """
> if isinstance(v, basestring):
> yield v
> elif isinstance(v, lazyT):
> yield v
> yield v.s # Check lazyT symbols dict
> for i in v.s:
> for new_v in get_value_objects(i):
> yield new_v
> elif isinstance(v, Mapping):
> yield v
> for i in v.values():
> for new_v in get_value_objects(i):
> yield new_v
> elif isinstance(v, Iterable):
> yield v
> for i in v:
> for new_v in get_value_objects(i):
> yield new_v
> else:
> yield v
>
>
> @wraps(f)
> def wrapper(*args, **kwargs):
> before = Counter(type(obj) for obj in get_objects())
> result = f(*args, **kwargs)
> after = Counter(type(obj) for obj in get_objects())
> result_objs = Counter(type(obj) for obj in get_value_objects(
> result))
> count = after - before - result_objs - Counter([Counter])
> # This and other stuff put in the response or session is not a
> memory
> # leak.
> # So false positives may appear for what's not accounted here.
> if response.flash:
> count -= Counter(type(obj) for obj in get_value_objects(
> response.flash))
> if response.js:
> count -= Counter(type(obj) for obj in get_value_objects(
> response.js))
>
> # Finally we are ready to report what we have found.
> for k in count:
> print 'LEAKED: %d of type %s' % (count[k], k)
> return result
>
>
> return wrapper
>
>
>
>
--
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- http://web2py.com/book (Documentation)
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