FazBrowse GitHub Viewer
|
Trending
|
URL:
|
Home
Tools:
[Download Repo ZIP]
[View Raw Code]
[Original HTTPS Page]
pythonnet/src/embed_tests/TestPyBuffer.cs at v3.2.0 · pythonnet/pythonnet · GitHub
pythonnet
pythonnet
Repository navigation
Code
Issues
147
(147)
Pull requests
11
(11)
Discussions
Actions
Projects
Wiki
Security and quality
Insights
Expand file tree
Breadcrumbs
pythonnet
/
src
/
embed_tests
/
TestPyBuffer.cs
Copy path
More file actions
More file actions
Latest commit
History
History
History
236 lines (190 loc) · 7.58 KB
Breadcrumbs
pythonnet
/
src
/
embed_tests
/
TestPyBuffer.cs
Copy path
File metadata and controls
236 lines (190 loc) · 7.58 KB
Raw
Copy raw file
Download raw file
Open symbols panel
Edit and raw actions
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
using
System
;
using
System
.
Runtime
.
CompilerServices
;
using
System
.
Text
;
using
System
.
Threading
;
using
NUnit
.
Framework
;
using
Python
.
Runtime
;
using
Python
.
Runtime
.
Codecs
;
namespace
Python
.
EmbeddingTest
{
class
TestPyBuffer
{
[
OneTimeSetUp
]
public
void
SetUp
(
)
{
TupleCodec
<
ValueTuple
>
.
Register
(
)
;
}
[
OneTimeTearDown
]
public
void
Dispose
(
)
{
PyObjectConversions
.
Reset
(
)
;
}
[
Test
]
public
void
TestBufferWrite
(
)
{
string
bufferTestString
=
"hello world! !$%&/()=?"
;
string
bufferTestString2
=
"h llo world! !$%&/()=?"
;
using
var
_
=
Py
.
GIL
(
)
;
using
var
pythonArray
=
ByteArrayFromAsciiString
(
bufferTestString
)
;
using
(
PyBuffer
buf
=
pythonArray
.
GetBuffer
(
PyBUF
.
WRITABLE
)
)
{
byte
[
]
managedArray
=
{
(
byte
)
' '
}
;
buf
.
Write
(
managedArray
,
0
,
managedArray
.
Length
,
1
)
;
}
string
result
=
pythonArray
.
InvokeMethod
(
"decode"
,
"utf-8"
.
ToPython
(
)
)
.
As
<
string
>
(
)
;
Assert
.
That
(
result
==
bufferTestString2
,
Is
.
True
)
;
}
[
Test
]
public
void
TestBufferRead
(
)
{
string
bufferTestString
=
"hello world! !$%&/()=?"
;
using
var
_
=
Py
.
GIL
(
)
;
using
var
pythonArray
=
ByteArrayFromAsciiString
(
bufferTestString
)
;
byte
[
]
managedArray
=
new
byte
[
bufferTestString
.
Length
]
;
using
(
PyBuffer
buf
=
pythonArray
.
GetBuffer
(
)
)
{
managedArray
[
0
]
=
(
byte
)
' '
;
buf
.
Read
(
managedArray
,
1
,
managedArray
.
Length
-
1
,
1
)
;
}
string
result
=
new
UTF8Encoding
(
)
.
GetString
(
managedArray
)
;
Assert
.
That
(
result
,
Is
.
EqualTo
(
$
"
{
bufferTestString
.
Substring
(
1
)
}
"
)
)
;
}
[
Test
]
public
void
GetPointer
(
)
{
// create 3D NumPy array
int
[
]
shape
=
[
10
,
10
,
10
]
;
using
PyObject
ndArray
=
np
.
zeros
(
shape
)
;
using
PyBuffer
buf
=
ndArray
.
GetBuffer
(
PyBUF
.
STRIDES
)
;
var
ptr
=
buf
.
GetPointer
(
[
0
,
0
,
0
]
)
;
Assert
.
That
(
ptr
,
Is
.
Not
.
EqualTo
(
IntPtr
.
Zero
)
)
;
var
ptrEnd
=
buf
.
GetPointer
(
[
9
,
9
,
9
]
)
;
Assert
.
That
(
ptrEnd
,
Is
.
Not
.
EqualTo
(
IntPtr
.
Zero
)
)
;
Assert
.
Throws
<
ArgumentNullException
>
(
(
)
=>
buf
.
GetPointer
(
null
!
)
)
;
Assert
.
Throws
<
ArgumentOutOfRangeException
>
(
(
)
=>
buf
.
GetPointer
(
[
0
,
0
]
)
)
;
Assert
.
Throws
<
ArgumentOutOfRangeException
>
(
(
)
=>
buf
.
GetPointer
(
[
0
,
0
,
0
,
0
]
)
)
;
Assert
.
Throws
<
ArgumentOutOfRangeException
>
(
(
)
=>
buf
.
GetPointer
(
[
-
1
,
0
,
0
]
)
)
;
Assert
.
Throws
<
ArgumentOutOfRangeException
>
(
(
)
=>
buf
.
GetPointer
(
[
0
,
-
1
,
0
]
)
)
;
Assert
.
Throws
<
ArgumentOutOfRangeException
>
(
(
)
=>
buf
.
GetPointer
(
[
0
,
0
,
-
1
]
)
)
;
Assert
.
Throws
<
ArgumentOutOfRangeException
>
(
(
)
=>
buf
.
GetPointer
(
[
10
,
0
,
0
]
)
)
;
Assert
.
Throws
<
ArgumentOutOfRangeException
>
(
(
)
=>
buf
.
GetPointer
(
[
0
,
10
,
0
]
)
)
;
Assert
.
Throws
<
ArgumentOutOfRangeException
>
(
(
)
=>
buf
.
GetPointer
(
[
0
,
0
,
10
]
)
)
;
using
PyBuffer
buf2
=
ndArray
.
GetBuffer
(
PyBUF
.
ND
)
;
Assert
.
Throws
<
InvalidOperationException
>
(
(
)
=>
buf2
.
GetPointer
(
[
0
,
0
,
0
]
)
)
;
}
[
Test
]
public
void
ArrayHasBuffer
(
)
{
var
array
=
new
[
,
]
{
{
1
,
2
}
,
{
3
,
4
}
}
;
var
memoryView
=
PythonEngine
.
Eval
(
"memoryview"
)
;
var
mem
=
memoryView
.
Invoke
(
array
.
ToPython
(
)
)
;
Assert
.
That
(
mem
[
(
0
,
0
)
.
ToPython
(
)
]
.
As
<
int
>
(
)
,
Is
.
EqualTo
(
1
)
)
;
Assert
.
That
(
mem
[
(
1
,
0
)
.
ToPython
(
)
]
.
As
<
int
>
(
)
,
Is
.
EqualTo
(
array
[
1
,
0
]
)
)
;
}
[
Test
]
public
void
RefCount
(
)
{
using
var
_
=
Py
.
GIL
(
)
;
using
var
arr
=
ByteArrayFromAsciiString
(
"hello world! !$%&/()=?"
)
;
Assert
.
That
(
arr
.
Refcount
,
Is
.
EqualTo
(
1
)
)
;
using
(
PyBuffer
buf
=
arr
.
GetBuffer
(
)
)
{
Assert
.
That
(
arr
.
Refcount
,
Is
.
EqualTo
(
2
)
)
;
}
Assert
.
That
(
arr
.
Refcount
,
Is
.
EqualTo
(
1
)
)
;
}
[
Test
]
public
void
Finalization
(
)
{
if
(
Type
.
GetType
(
"Mono.Runtime"
)
is
not
null
)
{
Assert
.
Inconclusive
(
"test unreliable in Mono"
)
;
return
;
}
using
var
_
=
Py
.
GIL
(
)
;
using
var
arr
=
ByteArrayFromAsciiString
(
"hello world! !$%&/()=?"
)
;
Assert
.
That
(
arr
.
Refcount
,
Is
.
EqualTo
(
1
)
)
;
MakeBufAndLeak
(
arr
)
;
GC
.
Collect
(
)
;
GC
.
WaitForPendingFinalizers
(
)
;
Finalizer
.
Instance
.
Collect
(
)
;
Assert
.
That
(
arr
.
Refcount
,
Is
.
EqualTo
(
1
)
)
;
}
[
Test
]
public
void
MultidimensionalNumPyArray
(
)
{
var
ndarray
=
np
.
arange
(
24
)
.
reshape
(
1
,
2
,
3
,
4
)
.
T
;
PyObject
ndim
=
ndarray
.
ndim
;
PyObject
shape
=
ndarray
.
shape
;
PyObject
strides
=
ndarray
.
strides
;
PyObject
contiguous
=
ndarray
.
flags
[
"C_CONTIGUOUS"
]
;
using
PyBuffer
buf
=
ndarray
.
GetBuffer
(
PyBUF
.
STRIDED
)
;
Assert
.
Multiple
(
(
)
=>
{
Assert
.
That
(
buf
.
Dimensions
,
Is
.
EqualTo
(
ndim
.
As
<
int
>
(
)
)
)
;
Assert
.
That
(
buf
.
Shape
,
Is
.
EqualTo
(
shape
.
As
<
long
[
]
>
(
)
)
)
;
Assert
.
That
(
buf
.
Strides
,
Is
.
EqualTo
(
strides
.
As
<
long
[
]
>
(
)
)
)
;
Assert
.
That
(
buf
.
IsContiguous
(
BufferOrderStyle
.
C
)
,
Is
.
EqualTo
(
contiguous
.
As
<
bool
>
(
)
)
)
;
}
)
;
}
[
Test
]
public
void
ConcurrentDispose
(
)
{
// Two threads racing on Dispose() must not double-release the view —
// Interlocked.Exchange on disposedValue gates PyBuffer_Release.
// Smoke test: no crash, exception, or buffer-protocol violation.
using
var
_
=
Py
.
GIL
(
)
;
using
var
arr
=
ByteArrayFromAsciiString
(
"hello world! !$%&/()=?"
)
;
const
int
iterations
=
200
;
for
(
int
i
=
0
;
i
<
iterations
;
i
++
)
{
PyBuffer
buf
=
arr
.
GetBuffer
(
)
;
IntPtr
ts
=
PythonEngine
.
BeginAllowThreads
(
)
;
using
var
barrier
=
new
Barrier
(
2
)
;
Exception
captured
=
null
;
Action
race
=
(
)
=>
{
try
{
barrier
.
SignalAndWait
(
)
;
using
(
Py
.
GIL
(
)
)
buf
.
Dispose
(
)
;
}
catch
(
Exception
ex
)
{
Interlocked
.
CompareExchange
(
ref
captured
,
ex
,
null
)
;
}
}
;
var
t1
=
new
Thread
(
(
)
=>
race
(
)
)
;
var
t2
=
new
Thread
(
(
)
=>
race
(
)
)
;
t1
.
Start
(
)
;
t2
.
Start
(
)
;
t1
.
Join
(
)
;
t2
.
Join
(
)
;
PythonEngine
.
EndAllowThreads
(
ts
)
;
if
(
captured
!=
null
)
throw
captured
;
}
}
[
MethodImpl
(
MethodImplOptions
.
NoInlining
)
]
static
void
MakeBufAndLeak
(
PyObject
bufProvider
)
{
PyBuffer
buf
=
bufProvider
.
GetBuffer
(
)
;
}
static
PyObject
ByteArrayFromAsciiString
(
string
str
)
{
using
var
scope
=
Py
.
CreateScope
(
)
;
return
Runtime
.
Runtime
.
PyByteArray_FromStringAndSize
(
str
)
.
MoveToPyObject
(
)
;
}
dynamic
np
{
get
{
try
{
return
Py
.
Import
(
"numpy"
)
;
}
catch
(
PythonException
)
{
Assert
.
Inconclusive
(
"Numpy or dependency not installed"
)
;
return
null
;
}
}
}
}
}
Back
|
FazBrowse Home
|
New Git URL