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pythonnet/src/runtime/Loader.cs at master · zilo555/pythonnet · GitHub
zilo555
pythonnet
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runtime
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Loader.cs
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src
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runtime
/
Loader.cs
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using
System
;
using
System
.
IO
;
using
System
.
Text
;
namespace
Python
.
Runtime
{
using
static
Runtime
;
[
Obsolete
(
"Only to be used from within Python"
)
]
static
class
Loader
{
public
unsafe
static
int
Initialize
(
IntPtr
data
,
int
size
)
{
try
{
// On .NET Framework, the host is python.exe which has no binding
// redirects for netstandard2.0 shims (e.g. RuntimeInformation
// Version=0.0.0.0 vs the 4.0.2.0 shim on disk). Binding redirects
// via config files can't be injected after AppDomain creation, so
// resolve assemblies from our runtime directory directly.
// Only needed on .NET Framework; on .NET (Core) this causes
// duplicate assembly loads, as .deps.json is respected and
// the correct assembly is already found.
if
(
typeof
(
object
)
.
Assembly
.
GetName
(
)
.
Name
==
"mscorlib"
)
{
AppDomain
.
CurrentDomain
.
AssemblyResolve
+=
(
_
,
args
)
=>
{
var
name
=
new
System
.
Reflection
.
AssemblyName
(
args
.
Name
)
;
var
dir
=
Path
.
GetDirectoryName
(
typeof
(
Loader
)
.
Assembly
.
Location
)
;
var
path
=
Path
.
Combine
(
dir
,
name
.
Name
+
".dll"
)
;
return
File
.
Exists
(
path
)
?
System
.
Reflection
.
Assembly
.
LoadFrom
(
path
)
:
null
;
}
;
}
var
dllPath
=
Encodings
.
UTF8
.
GetString
(
(
byte
*
)
data
.
ToPointer
(
)
,
size
)
;
if
(
!
string
.
IsNullOrEmpty
(
dllPath
)
)
{
PythonDLL
=
dllPath
;
}
else
{
PythonDLL
=
null
;
}
using
var
_
=
Py
.
GIL
(
)
;
PythonEngine
.
InitExt
(
)
;
}
catch
(
Exception
exc
)
{
Console
.
Error
.
Write
(
$
"Failed to initialize pythonnet:
{
exc
}
\n
{
exc
.
StackTrace
}
"
)
;
return
1
;
}
return
0
;
}
public
unsafe
static
int
Shutdown
(
IntPtr
data
,
int
size
)
{
try
{
var
command
=
Encodings
.
UTF8
.
GetString
(
(
byte
*
)
data
.
ToPointer
(
)
,
size
)
;
if
(
command
==
"full_shutdown"
)
{
using
var
_
=
Py
.
GIL
(
)
;
PythonEngine
.
Shutdown
(
)
;
}
}
catch
(
Exception
exc
)
{
Console
.
Error
.
Write
(
$
"Failed to shutdown pythonnet:
{
exc
}
\n
{
exc
.
StackTrace
}
"
)
;
return
1
;
}
return
0
;
}
}
}
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