多程序執行（限制程序數）
from ctypes import
*import os
import multiprocessing
import time, datetime
import multiprocessing as np
deftestdll
(wide,tele)
: dll = cdll(os.getcwd()+
"/"+
"sealdet_surf_ncc_v22_vs2017_akaze_release_dll.dll"
)#初始化dll,載入dll
dll.sealdet_surf_ncc.argtypes =
[pointer(c_char)
, pointer(c_char)
, c_int, c_float]
#定義dll入參型別
dll.sealdet_surf_ncc.restype = c_float #定義dll出參型別，不定義程式不知道型別會報錯
wide1 =
(c_char *
300)(*
bytes
(wide,
'utf-8'))
# 把一組100個的字元定義為str
tele1 =
(c_char *
300)(*
bytes
(tele,
'utf-8'))
# 把一組100個的字元定義為str
#cast(wide1, pointer(c_char))
#cast(tele1, pointer(c_char))
t1 = datetime.datetime.now(
) pchar = dll.sealdet_surf_ncc(wide1, tele1,20,
0.1)
t2 = datetime.datetime.now(
) t =
round
((t2 - t1)
.total_seconds(),
3)# 檢索耗時
return
defdiclist
(wide,tele)
: diclist =
n=1for i in os.listdir(wide)
: widepath = os.path.join(wide, i)
for i1 in os.listdir(tele)
: telepath = os.path.join(tele, i1)
dic =
n=n+
1return diclist
deftest_***
(wide,tele,c)
:print
(c,testdll(wide,tele)
)def
main2()
: pool = multiprocessing.pool(processes=4)
for i in
range
(len
(diclist(wide,tele)))
: path = diclist(wide, tele)
[i](path[
"wide"
],path[
"tele"
],i+1)
) pool.close(
) pool.join(
)# 在join之前一定要呼叫close，否則報錯
if __name__ ==
"__main__"
: wide = r"d:\python\python3\ceramic\release版\test"
tele = r"d:\python\python3\ceramic\release版\test"
t1 = datetime.datetime.now(
)print
(t1)
main2(
) t2 = datetime.datetime.now(
)print
(t2)
print
(round
((t2 - t1)
.total_seconds(),
3))
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