def test_sharedarray_multiprocess():
sa = SharedArray(shape=(10), dtype='int32')
np_a = sa.to_numpy()
np_a[:] = np.arange(10)
# Start remote process, read data from shared array, then return to host
# process.
proc = mp.Process()
sa_mod = proc._import('pyacq.core.stream.sharedarray')
sa2 = sa_mod.SharedArray(**sa.to_dict())
np_a2 = sa2.to_numpy(_returnType='value')
proc.close()
assert np.all(np_a == np_a2)
# -*- coding: utf-8 -*-
import initExample ## Add path to library (just for examples; you do not need this)
import numpy as np
import pyqtgraph.multiprocess as mp
import pyqtgraph as pg
import time
print("\n=================\nStart Process")
proc = mp.Process()
import os
print("parent:", os.getpid(), "child:", proc.proc.pid)
print("started")
rnp = proc._import('numpy')
arr = rnp.array([1, 2, 3, 4])
print(repr(arr))
print(str(arr))
print("return value:", repr(arr.mean(_returnType='value')))
print("return proxy:", repr(arr.mean(_returnType='proxy')))
print("return auto: ", repr(arr.mean(_returnType='auto')))
proc.join()
print("process finished")
print("\n=================\nStart ForkedProcess")
proc = mp.ForkedProcess()
rnp = proc._import('numpy')
arr = rnp.array([1, 2, 3, 4])
print(repr(arr))
print(str(arr))
print(repr(arr.mean()))
proc.join()
print("process finished")
start = time.time()
print("submit site:", site_dir.name())
print(expt)
sub = ExperimentDBSubmission(site_dir, nwb_cache_file)
if sub.submitted():
print(" already in DB")
else:
if '--local' in sys.argv:
sub.submit()
else:
# Do experiment submission in a subprocess to control memory
# usage.
proc = mp.Process(pyqtapis={'QString': 2, 'QVariant': 2})
try:
rdm = proc._import('acq4.util.DataManager')
nwb_file = rdm.getFileHandle(expt.nwb_file)
nwb_cache_file = rdm.getFileHandle(expt.nwb_cache_file)
site_dir = nwb_file.parent()
slice_dir = site_dir.parent()
rsub = proc._import('submission')
sub = rsub.ExperimentDBSubmission(
site_dir, nwb_cache_file)
fn = sub.submit(_timeout=None)
finally:
proc.join()