我正在遇到一个非常奇怪的案例，我正在编写一个涉及ctypes的小类。这个类的目标是将一个专有格式的矩阵加载到我必须创建的python结构中（这些矩阵可以有几个核心/层，每个核心/层可以有几个索引，只引用几个元素）矩阵，从而形成子矩阵）。
测试该类的代码是：
import numpy as np
from READS_MTX import mtx
import time
mymatrix=mtx()
mymatrix.load('D:\\MyMatrix.mtx', True)
我创建的课程是这样的：
import os
import numpy as np
from ctypes import *
import ctypes
import time
def main():
pass
#A mydll mtx can have several cores
#we need a class to define each core
#and a class to hold the whole file together
class mtx_core:
def __init__(self):
self.name=None #Matrix core name
self.rows=-1 #Number of rows in the matrix
self.columns=-1 #Number of columns in the matrix
self.type=-1 #Data type of the matrix
self.indexcount=-1 #Tuple with the number of indices for each dimension
self.RIndex={} #Dictionary with all indices for the rows
self.CIndex={} #Dictionary with all indices for the columns
self.basedata=None
self.matrix=None
def add_core(self, mydll,mat,core):
nameC=ctypes.create_string_buffer(50)
mydll.MATRIX_GetLabel(mat,0,nameC)
nameC=repr(nameC.value)
nameC=nameC[1:len(nameC)-1]
#Add the information to the objects' methods
self.name=repr(nameC)
self.rows= mydll.MATRIX_GetBaseNRows(mat)
self.columns=mydll.MATRIX_GetBaseNCols(mat)
self.type=mydll.MATRIX_GetDataType(mat)
self.indexcount=(mydll.MATRIX_GetNIndices(mat,0 ),mydll.MATRIX_GetNIndices(mat,0 ))
#Define the data type Numpy will have according to the data type of the matrix in question
dt=np.float64
v=(self.columns*c_float)()
if self.type==1:
dt=np.int32
v=(self.columns*c_long)()
if self.type==2:
dt=np.int64
v=(self.columns*c_longlong)()
#Instantiate the matrix
time.sleep(5)
self.basedata=np.zeros((self.rows,self.columns),dtype=dt)
#Read matrix and puts in the numpy array
for i in range(self.rows):
mydll.MATRIX_GetBaseVector(mat,i,0,self.type,v)
self.basedata[i,:]=v[:]
#Reads all the indices for rows and put them in the dictionary
for i in range(self.indexcount[0]):
mydll.MATRIX_SetIndex(mat, 0, i)
v=(mydll.MATRIX_GetNRows(mat)*c_long)()
mydll.MATRIX_GetIDs(mat,0, v)
t=np.zeros(mydll.MATRIX_GetNRows(mat),np.int64)
t[:]=v[:]
self.RIndex[i]=t.copy()
#Do the same for columns
for i in range(self.indexcount[1]):
mydll.MATRIX_SetIndex(mat, 1, i)
v=(mydll.MATRIX_GetNCols(mat)*c_long)()
mydll.MATRIX_GetIDs(mat,1, v)
t=np.zeros(mydll.MATRIX_GetNCols(mat),np.int64)
t[:]=v[:]
self.CIndex[i]=t.copy()
class mtx:
def __init__(self):
self.data=None
self.cores=-1
self.matrix={}
mydll=None
def load(self, filename, verbose=False):
#We load the DLL and initiate it
mydll=cdll.LoadLibrary('C:\\Program Files\\Mysoftware\\matrixDLL.dll')
mydll.InitMatDLL()
mat=mydll.MATRIX_LoadFromFile(filename, True)
if mat<>0:
self.cores=mydll.MATRIX_GetNCores(mat)
if verbose==True: print "Matrix has ", self.cores, " cores"
for i in range(self.cores):
mydll.MATRIX_SetCore(mat,i)
nameC=ctypes.create_string_buffer(50)
mydll.MATRIX_GetLabel(mat,i,nameC)
nameC=repr(nameC.value)
nameC=nameC[1:len(nameC)-1]
#If verbose, we list the matrices being loaded
if verbose==True: print " Loading core: ", nameC
self.datafile=filename
self.matrix[nameC]=mtx_core()
self.matrix[nameC].add_core(mydll,mat,i)
else:
raise NameError('Not possible to open file. TranCad returned '+ str(tc_value))
mydll.MATRIX_CloseFile(filename)
mydll.MATRIX_Done(mat)
if __name__ == '__main__':
main()
当我以任何形式（双击，python的IDLE或Pyscripter）运行测试代码时，它会因熟悉的错误崩溃而导致错误＆＃34; WindowsError：异常：访问违规写入0x0000000000000246＆＃34;，但是当我使用Pyscripter在任何内循环中停止来调试代码，它运行得很完美。
我真的很感激任何见解。
修改
DLL的Dumpbin输出：
文件类型：DLL
部分包含CaliperMTX.dll的以下导出
00000000 characteristics
52FB9F15 time date stamp Wed Feb 12 08:19:33 2014
0.00 version
1 ordinal base
81 number of functions
81 number of names
ordinal hint RVA name
1 0 0001E520 InitMatDLL
2 1 0001B140 MATRIX_AddIndex
3 2 0001AEE0 MATRIX_Clear
4 3 0001AE30 MATRIX_CloseFile
5 4 00007600 MATRIX_Copy
6 5 000192A0 MATRIX_CreateCache
7 6 00019160 MATRIX_CreateCacheEx
8 7 0001EB10 MATRIX_CreateSimple
9 8 0001ED20 MATRIX_CreateSimpleLike
10 9 00016D40 MATRIX_DestroyCache
11 A 00016DA0 MATRIX_DisableCache
12 B 0001A880 MATRIX_Done
13 C 0001B790 MATRIX_DropIndex
14 D 00016D70 MATRIX_EnableCache
15 E 00015B10 MATRIX_GetBaseNCols
16 F 00015B00 MATRIX_GetBaseNRows
17 10 00015FF0 MATRIX_GetBaseVector
18 11 00015CE0 MATRIX_GetCore
19 12 000164C0 MATRIX_GetCurrentIndexPos
20 13 00015B20 MATRIX_GetDataType
21 14 00015EE0 MATRIX_GetElement
22 15 00015A30 MATRIX_GetFileName
23 16 00007040 MATRIX_GetIDs
24 17 00015B80 MATRIX_GetInfo
25 18 00015A50 MATRIX_GetLabel
26 19 00015AE0 MATRIX_GetNCols
27 1A 00015AB0 MATRIX_GetNCores
28 1B 00016EC0 MATRIX_GetNIndices
29 1C 00015AC0 MATRIX_GetNRows
30 1D 00018AF0 MATRIX_GetVector
31 1E 00015B40 MATRIX_IsColMajor
32 1F 00015B60 MATRIX_IsFileBased
33 20 000171A0 MATRIX_IsReadOnly
34 21 00015B30 MATRIX_IsSparse
35 22 0001AE10 MATRIX_LoadFromFile
36 23 0001BAE0 MATRIX_New
37 24 00017150 MATRIX_OpenFile
38 25 000192D0 MATRIX_RefreshCache
39 26 00016340 MATRIX_SetBaseVector
40 27 00015C20 MATRIX_SetCore
41 28 00016200 MATRIX_SetElement
42 29 00016700 MATRIX_SetIndex
43 2A 0001AFA0 MATRIX_SetLabel
44 2B 00018E50 MATRIX_SetVector
45 2C 00005DA0 MAT_ACCESS_Create
46 2D 00005E40 MAT_ACCESS_CreateFromCurrency
47 2E 00004B10 MAT_ACCESS_Done
48 2F 00005630 MAT_ACCESS_FillRow
49 30 000056D0 MAT_ACCESS_FillRowDouble
50 31 00005A90 MAT_ACCESS_GetCurrency
51 32 00004C30 MAT_ACCESS_GetDataType
52 33 000058E0 MAT_ACCESS_GetDoubleValue
53 34 00004C40 MAT_ACCESS_GetIDs
54 35 00005AA0 MAT_ACCESS_GetMatrix
55 36 00004C20 MAT_ACCESS_GetNCols
56 37 00004C10 MAT_ACCESS_GetNRows
57 38 000055A0 MAT_ACCESS_GetRowBuffer
58 39 00005570 MAT_ACCESS_GetRowID
59 3A 00005610 MAT_ACCESS_GetToReadFlag
60 3B 00005870 MAT_ACCESS_GetValue
61 3C 00005AB0 MAT_ACCESS_IsValidCurrency
62 3D 000055E0 MAT_ACCESS_SetDirty
63 3E 000059F0 MAT_ACCESS_SetDoubleValue
64 3F 00005620 MAT_ACCESS_SetToReadFlag
65 40 00005960 MAT_ACCESS_SetValue
66 41 00005460 MAT_ACCESS_UseIDs
67 42 00005010 MAT_ACCESS_UseIDsEx
68 43 00005490 MAT_ACCESS_UseOwnIDs
69 44 00004D10 MAT_ACCESS_ValidateIDs
70 45 0001E500 MAT_pafree
71 46 0001E4E0 MAT_palloc
72 47 0001E4F0 MAT_pfree
73 48 0001E510 MAT_prealloc
74 49 00006290 MA_MGR_AddMA
75 4A 00006350 MA_MGR_AddMAs
76 4B 00005F90 MA_MGR_Create
77 4C 00006050 MA_MGR_Done
78 4D 000060D0 MA_MGR_RegisterThreads
79 4E 00006170 MA_MGR_SetRow
80 4F 00006120 MA_MGR_UnregisterThread
81 50 0001E490 UnloadMatDLL
摘要
6000 .data
5000 .pdata
C000 .rdata
1000 .reloc
1000 .rsrc
54000 .text