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import pyperf
from zope.interface import Interface
from zope.interface import classImplements
from zope.interface import implementedBy
from zope.interface.interface import InterfaceClass
from zope.interface.registry import Components
# Long, mostly similar names are a worst case for equality
# comparisons.
ifaces = [
InterfaceClass('I' + ('0' * 20) + str(i), (Interface,), {})
for i in range(100)
]
class IWideInheritance(*ifaces):
"""
Inherits from 100 unrelated interfaces.
"""
class WideInheritance(object):
pass
classImplements(WideInheritance, IWideInheritance)
def make_deep_inheritance():
children = []
base = Interface
for iface in ifaces:
child = InterfaceClass('IDerived' + base.__name__, (iface, base,), {})
base = child
children.append(child)
return children
deep_ifaces = make_deep_inheritance()
class DeepestInheritance(object):
pass
classImplements(DeepestInheritance, deep_ifaces[-1])
def make_implementer(iface):
c = type('Implementer' + iface.__name__, (object,), {})
classImplements(c, iface)
return c
implementers = [
make_implementer(iface)
for iface in ifaces
]
providers = [
implementer()
for implementer in implementers
]
INNER = 100
def bench_in(loops, o):
t0 = pyperf.perf_counter()
for _ in range(loops):
for _ in range(INNER):
o.__contains__(Interface)
return pyperf.perf_counter() - t0
def bench_sort(loops, objs):
import random
rand = random.Random(8675309)
shuffled = list(objs)
rand.shuffle(shuffled)
t0 = pyperf.perf_counter()
for _ in range(loops):
for _ in range(INNER):
sorted(shuffled)
return pyperf.perf_counter() - t0
def bench_query_adapter(loops, components, objs=providers):
# One time through to prime the caches
for iface in ifaces:
for provider in providers:
components.queryAdapter(provider, iface)
t0 = pyperf.perf_counter()
for _ in range(loops):
for iface in ifaces:
for provider in objs:
components.queryAdapter(provider, iface)
return pyperf.perf_counter() - t0
def bench_getattr(loops, name, get=getattr):
t0 = pyperf.perf_counter()
for _ in range(loops):
for _ in range(INNER):
get(Interface, name) # 1
get(Interface, name) # 2
get(Interface, name) # 3
get(Interface, name) # 4
get(Interface, name) # 5
get(Interface, name) # 6
get(Interface, name) # 7
get(Interface, name) # 8
get(Interface, name) # 9
get(Interface, name) # 10
return pyperf.perf_counter() - t0
runner = pyperf.Runner()
runner.bench_time_func(
'read __module__', # stored in C, accessed through __getattribute__
bench_getattr,
'__module__',
inner_loops=INNER * 10
)
runner.bench_time_func(
'read __name__', # stored in C, accessed through PyMemberDef
bench_getattr,
'__name__',
inner_loops=INNER * 10
)
runner.bench_time_func(
'read __doc__', # stored in Python instance dictionary directly
bench_getattr,
'__doc__',
inner_loops=INNER * 10
)
runner.bench_time_func(
'read providedBy', # from the class, wrapped into a method object.
bench_getattr,
'providedBy',
inner_loops=INNER * 10
)
runner.bench_time_func(
'query adapter (no registrations)',
bench_query_adapter,
Components(),
inner_loops=1
)
def populate_components():
def factory(o):
return 42
pop_components = Components()
for iface in ifaces:
for other_iface in ifaces:
pop_components.registerAdapter(factory, (iface,), other_iface, event=False)
return pop_components
runner.bench_time_func(
'query adapter (all trivial registrations)',
bench_query_adapter,
populate_components(),
inner_loops=1
)
runner.bench_time_func(
'query adapter (all trivial registrations, wide inheritance)',
bench_query_adapter,
populate_components(),
[WideInheritance()],
inner_loops=1
)
runner.bench_time_func(
'query adapter (all trivial registrations, deep inheritance)',
bench_query_adapter,
populate_components(),
[DeepestInheritance()],
inner_loops=1
)
runner.bench_time_func(
'sort interfaces',
bench_sort,
ifaces,
inner_loops=INNER,
)
runner.bench_time_func(
'sort implementedBy',
bench_sort,
[implementedBy(p) for p in implementers],
inner_loops=INNER,
)
runner.bench_time_func(
'sort mixed',
bench_sort,
[implementedBy(p) for p in implementers] + ifaces,
inner_loops=INNER,
)
runner.bench_time_func(
'contains (empty dict)',
bench_in,
{},
inner_loops=INNER
)
runner.bench_time_func(
'contains (populated dict: interfaces)',
bench_in,
{k: k for k in ifaces},
inner_loops=INNER
)
runner.bench_time_func(
'contains (populated list: interfaces)',
bench_in,
ifaces,
inner_loops=INNER
)
runner.bench_time_func(
'contains (populated dict: implementedBy)',
bench_in,
{implementedBy(p): 1 for p in implementers},
inner_loops=INNER
)
runner.bench_time_func(
'contains (populated list: implementedBy)',
bench_in,
[implementedBy(p) for p in implementers],
inner_loops=INNER
)
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