FazBrowse GitHub Viewer
|
Trending
|
URL:
|
Home
Tools:
[Download Repo ZIP]
[View Raw Code]
[Original HTTPS Page]
pythonnet/pythonnet/src/runtime/pythonengine.cs at master · pythonindy/pythonnet · GitHub
pythonindy
pythonnet
Repository navigation
Code
Pull requests
Actions
Projects
Security and quality
Insights
Expand file tree
Breadcrumbs
pythonnet
/
pythonnet
/
src
/
runtime
/
pythonengine.cs
Copy path
More file actions
More file actions
Latest commit
History
History
History
executable file
·
337 lines (277 loc) · 8.64 KB
Breadcrumbs
pythonnet
/
pythonnet
/
src
/
runtime
/
pythonengine.cs
Copy path
File metadata and controls
executable file
·
337 lines (277 loc) · 8.64 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
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
// ==========================================================================
// This software is subject to the provisions of the Zope Public License,
// Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution.
// THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
// WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
// FOR A PARTICULAR PURPOSE.
// ==========================================================================
using
System
;
using
System
.
Threading
;
namespace
Python
.
Runtime
{
/// <summary>
/// This class provides the public interface of the Python runtime.
/// </summary>
public
class
PythonEngine
{
private
static
bool
initialized
;
#region Properties
public
static
bool
IsInitialized
{
get
{
return
initialized
;
}
}
public
static
string
ProgramName
{
get
{
string
result
=
Runtime
.
Py_GetProgramName
(
)
;
if
(
result
==
null
)
{
return
""
;
}
return
result
;
}
set
{
Runtime
.
Py_SetProgramName
(
value
)
;
}
}
public
static
string
PythonHome
{
get
{
string
result
=
Runtime
.
Py_GetPythonHome
(
)
;
if
(
result
==
null
)
{
return
""
;
}
return
result
;
}
set
{
Runtime
.
Py_SetPythonHome
(
value
)
;
}
}
public
static
string
Version
{
get
{
return
Runtime
.
Py_GetVersion
(
)
;
}
}
public
static
string
BuildInfo
{
get
{
return
Runtime
.
Py_GetBuildInfo
(
)
;
}
}
public
static
string
Platform
{
get
{
return
Runtime
.
Py_GetPlatform
(
)
;
}
}
public
static
string
Copyright
{
get
{
return
Runtime
.
Py_GetCopyright
(
)
;
}
}
public
static
int
RunSimpleString
(
string
code
)
{
return
Runtime
.
PyRun_SimpleString
(
code
)
;
}
#endregion
/// <summary>
/// Initialize Method
/// </summary>
///
/// <remarks>
/// Initialize the Python runtime. It is safe to call this method
/// more than once, though initialization will only happen on the
/// first call. It is *not* necessary to hold the Python global
/// interpreter lock (GIL) to call this method.
/// </remarks>
public
static
void
Initialize
(
)
{
if
(
!
initialized
)
{
Runtime
.
Initialize
(
)
;
initialized
=
true
;
Exceptions
.
Clear
(
)
;
}
}
//====================================================================
// A helper to perform initialization from the context of an active
// CPython interpreter process - this bootstraps the managed runtime
// when it is imported by the CLR extension module.
//====================================================================
public
static
void
InitExt
(
)
{
Initialize
(
)
;
// Trickery - when the import hook is installed into an already
// running Python, the standard import machinery is still in
// control for the duration of the import that caused bootstrap.
//
// That is problematic because the std machinery tries to get
// sub-names directly from the module __dict__ rather than going
// through our module object's getattr hook. This workaround is
// evil ;) We essentially climb up the stack looking for the
// import that caused the bootstrap to happen, then re-execute
// the import explicitly after our hook has been installed. By
// doing this, the original outer import should work correctly.
//
// Note that this is only needed during the execution of the
// first import that installs the CLR import hook. This hack
// still doesn't work if you use the interactive interpreter,
// since there is no line info to get the import line ;(
string
code
=
"import traceback
\n
"
+
"for item in traceback.extract_stack():
\n
"
+
" line = item[3]
\n
"
+
" if line is not None:
\n
"
+
" if line.startswith('import CLR') or
\\
\n
"
+
" line.startswith('from CLR'):
\n
"
+
" exec line
\n
"
+
" break
\n
"
;
PyObject
r
=
PythonEngine
.
RunString
(
code
)
;
if
(
r
!=
null
)
{
r
.
Dispose
(
)
;
}
}
/// <summary>
/// Shutdown Method
/// </summary>
///
/// <remarks>
/// Shutdown and release resources held by the Python runtime. The
/// Python runtime can no longer be used in the current process
/// after calling the Shutdown method.
/// </remarks>
public
static
void
Shutdown
(
)
{
if
(
initialized
)
{
Runtime
.
Shutdown
(
)
;
initialized
=
false
;
}
}
/// <summary>
/// AcquireLock Method
/// </summary>
///
/// <remarks>
/// Acquire the Python global interpreter lock (GIL). Managed code
/// *must* call this method before using any objects or calling any
/// methods on objects in the Python.Runtime namespace. The only
/// exception is PythonEngine.Initialize, which may be called without
/// first calling AcquireLock.
///
/// Each call to AcquireLock must be matched by a corresponding call
/// to ReleaseLock, passing the token obtained from AcquireLock.
///
/// For more information, see the "Extending and Embedding" section
/// of the Python documentation on www.python.org.
/// </remarks>
public
static
IntPtr
AcquireLock
(
)
{
return
Runtime
.
PyGILState_Ensure
(
)
;
}
/// <summary>
/// ReleaseLock Method
/// </summary>
///
/// <remarks>
/// Release the Python global interpreter lock using a token obtained
/// from a previous call to AcquireLock.
///
/// For more information, see the "Extending and Embedding" section
/// of the Python documentation on www.python.org.
/// </remarks>
public
static
void
ReleaseLock
(
IntPtr
gs
)
{
Runtime
.
PyGILState_Release
(
gs
)
;
}
/// <summary>
/// BeginAllowThreads Method
/// </summary>
///
/// <remarks>
/// Release the Python global interpreter lock to allow other threads
/// to run. This is equivalent to the Py_BEGIN_ALLOW_THREADS macro
/// provided by the C Python API.
///
/// For more information, see the "Extending and Embedding" section
/// of the Python documentation on www.python.org.
/// </remarks>
public
static
IntPtr
BeginAllowThreads
(
)
{
return
Runtime
.
PyEval_SaveThread
(
)
;
}
/// <summary>
/// EndAllowThreads Method
/// </summary>
///
/// <remarks>
/// Re-aquire the Python global interpreter lock for the current
/// thread. This is equivalent to the Py_END_ALLOW_THREADS macro
/// provided by the C Python API.
///
/// For more information, see the "Extending and Embedding" section
/// of the Python documentation on www.python.org.
/// </remarks>
public
static
void
EndAllowThreads
(
IntPtr
ts
)
{
Runtime
.
PyEval_RestoreThread
(
ts
)
;
}
/// <summary>
/// ImportModule Method
/// </summary>
///
/// <remarks>
/// Given a fully-qualified module or package name, import the
/// module and return the resulting module object as a PyObject
/// or null if an exception is raised.
/// </remarks>
public
static
PyObject
ImportModule
(
string
name
)
{
IntPtr
op
=
Runtime
.
PyImport_ImportModule
(
name
)
;
if
(
op
==
IntPtr
.
Zero
)
{
return
null
;
}
return
new
PyObject
(
op
)
;
}
/// <summary>
/// ReloadModule Method
/// </summary>
///
/// <remarks>
/// Given a PyObject representing a previously loaded module, reload
/// the module.
/// </remarks>
public
static
PyObject
ReloadModule
(
PyObject
module
)
{
IntPtr
op
=
Runtime
.
PyImport_ReloadModule
(
module
.
Handle
)
;
if
(
op
==
IntPtr
.
Zero
)
{
throw
new
PythonException
(
)
;
}
return
new
PyObject
(
op
)
;
}
/// <summary>
/// ModuleFromString Method
/// </summary>
///
/// <remarks>
/// Given a string module name and a string containing Python code,
/// execute the code in and return a module of the given name.
/// </remarks>
public
static
PyObject
ModuleFromString
(
string
name
,
string
code
)
{
IntPtr
c
=
Runtime
.
Py_CompileString
(
code
,
"none"
,
(
IntPtr
)
257
)
;
if
(
c
==
IntPtr
.
Zero
)
{
throw
new
PythonException
(
)
;
}
IntPtr
m
=
Runtime
.
PyImport_ExecCodeModule
(
name
,
c
)
;
if
(
m
==
IntPtr
.
Zero
)
{
throw
new
PythonException
(
)
;
}
return
new
PyObject
(
m
)
;
}
/// <summary>
/// RunString Method
/// </summary>
///
/// <remarks>
/// Run a string containing Python code. Returns the result of
/// executing the code string as a PyObject instance, or null if
/// an exception was raised.
/// </remarks>
public
static
PyObject
RunString
(
string
code
)
{
IntPtr
globals
=
Runtime
.
PyEval_GetGlobals
(
)
;
IntPtr
locals
=
Runtime
.
PyDict_New
(
)
;
IntPtr
builtins
=
Runtime
.
PyEval_GetBuiltins
(
)
;
Runtime
.
PyDict_SetItemString
(
locals
,
"__builtins__"
,
builtins
)
;
IntPtr
flag
=
(
IntPtr
)
257
;
/* Py_file_input */
IntPtr
result
=
Runtime
.
PyRun_String
(
code
,
flag
,
globals
,
locals
)
;
Runtime
.
Decref
(
locals
)
;
if
(
result
==
IntPtr
.
Zero
)
{
return
null
;
}
return
new
PyObject
(
result
)
;
}
}
}
Back
|
FazBrowse Home
|
New Git URL