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cpyquickhelper: python + C++ in different ways

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cpyquickhelper is a template to create a module with C functions in different ways. It implements function measure_time:

from cpyquickhelper.numbers import measure_time
from math import cos

res = measure_time(lambda: cos(0.5))
print(res)
{'average': 3.909366205334663e-06, 'deviation': 6.238702219064397e-07,
 'min_exec': 3.635883331298828e-06, 'max_exec': 5.776062607765198e-06,
 'repeat': 10, 'number': 50, 'context_size': 240}

It also implements an event profiler: it logs the timestamp for every event such as functions call or returns, memory allocations.

import io
import numpy
from cpyquickhelper.profiling import EventProfiler

def custom_array(N):
    a = numpy.zeros((N, N))
    a[:, 0] = 1
    a[0, :] = 1
    return a

ev = EventProfiler(impl='c')
ev.start()

custom_array(3)

ev.stop()

df = ev.retrieve_results()  # DataFrame
st = io.StringIO()
df.to_csv(st, index=False)
print(st.getvalue().replace("\r", ""))
time,value1,value2,event,name,mod,lineno,from_name,from_mod,from_line
822467345556400,0,0,return,_setup_profiler,cpyquickhelper/profiling/event_profiler.py,153,start,cpyquickhelper/profiling/event_profiler.py,126
822467345566700,0,0,c_call,_profiling_register_pyinstance,cpyquickhelper.profiling._event_profiler_c,109,_profiling_register_pyinstance,k.py,19
822467345569000,0,0,c_return,_profiling_register_pyinstance,cpyquickhelper.profiling._event_profiler_c,109,_profiling_register_pyinstance,k.py,19
822467345569700,0,0,return,start,cpyquickhelper/profiling/event_profiler.py,109,<module>,k.py,19
822467345575100,0,0,call,custom_array,k.py,5,<module>,k.py,19
822467345579600,0,0,c_call,zeros,numpy,5,zeros,k.py,19
822467345584300,2698130437280,32,malloc,start,cpyquickhelper/profiling/event_profiler.py,109,<module>,k.py,19
822467345590500,0,0,c_return,zeros,numpy,5,zeros,k.py,19
822467345598200,0,0,free,start,cpyquickhelper/profiling/event_profiler.py,109,<module>,k.py,19
822467345600400,0,0,free,start,cpyquickhelper/profiling/event_profiler.py,109,<module>,k.py,19
822467345600900,0,0,return,ndarray,numpy,5,ndarray,k.py,19
822467345603200,0,0,call,stop,cpyquickhelper/profiling/event_profiler.py,128,<module>,k.py,19
822467345604900,0,0,call,_restore_profiler,cpyquickhelper/profiling/event_profiler.py,168,stop,cpyquickhelper/profiling/event_profiler.py,151
822467345605600,0,0,c_call,setprofile,sys,168,setprofile,cpyquickhelper/profiling/event_profiler.py,151

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Credits

Author: Xavier Dupré

License

MIT License (MIT)

Tags

cpyquickhelper Xavier Dupré

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0.3.412 This release

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