How to make multithreading call and get output results from threads?

Evgeniy · 发表于 2021-7-15 19:26:31

Hi, Colleagues!

Can you help me with one task?

I need to call some procedure 4 times and get results from each threads after execution.

Is anybody know how to make it easy?

My code now is:

Count:=(|MirrorsData|-2)/3
MirrorWidth:=MirrorsData[|MirrorsData|-2]
MirrorHeight:=MirrorsData[|MirrorsData|-1]

FullTime:=0

Threads:=[]

for Index := 0 to |MirrorsData|-3 by 3

X:=MirrorsData[Index]
Y:=MirrorsData[Index+1]
Ang:=MirrorsData[Index+2]

MirrorAreaData:=[X,Y,Ang,MirrorWidth,MirrorHeight]

copy_image(SourceImage, DupImage)

par_start<LabelingProcessThread.at(Index)>: Get_Label_Collerete_And_Cap (DupImage, \
                                                      LabelPartImage, \
                                                      CollereteImage, \
                                                      CapImage, \
                                                      MirrorAreaData, \
                                                      HangersData, \
                                                      MirrorAreaData, \
                                                      MirrorAreaData, \
                                                      CollereteData, \
                                                      CapData, \
                                                      HangersShapeModel, \
                                                      TimeElapsed)

endfor
convert_vector_to_tuple (LabelingProcessThread, ImageProcessingThreads)
count_seconds (T1)
par_join(ImageProcessingThreads)
count_seconds (T2)

TimePar:=1000.0*(T2-T1)

return ()

Looks like he is working. But I don't understand how to get results from threads after execution.

Evgeniy · 发表于 2021-7-15 19:29:19

I need to get TimeElapsed and Images for begin :)

绝地武士 · 发表于 2021-7-15 20:58:50

ThreadIDs := []
for Index := 1 to 5 by 1
par_start <ThreadID> : gather_data()
ThreadIDs := [ThreadIDs, ThreadID]
endfor

复制代码

for Index := 1 to 5 by 1
par_start <ThreadIDs.at(Index - 1)> : gather_data()
endfor

复制代码

for Index := 1 to 5 by 1
par_start <ThreadIDs.at(Index - 1)> : gather_data(Result.at(Index - 1))
endfor

复制代码

Evgeniy · 发表于 2021-7-19 18:26:58

Hi, Jedi Knight!

Thank you for your answer.

I need to understand how to get results from threads after execution.

par_start<FindDfmThread.at(Index)>: Find_Local_Dfm(ImageReduced, Threshold, FindCount, DFMs[Index], \
Score.at(Index), Row.at(Index), Col.at(Index))

How to get Score, Row and Col?

The results returns as Score = {[0.95 , 0.84 , 0.77 , 0.66 , 0.51 ]} and I don'tunderstand how to get this Tuple parameter.

How to use their values in cycle?

Evgeniy · 发表于 2021-7-19 18:38:24

Oh, I see )))

I just need to use operator:

convert_vector_to_tuple (Score, ConvertedScores)

Ok! It is works!!!