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gpetrougpetrou
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Add GetNativeThreadID method in PythonEngine and different PyThreadState_SetAsyncExc calls for OS and Python version
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+74
-29
lines changed

4 files changed

+74
-29
lines changed

‎CHANGELOG.md‎

Lines changed: 4 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -11,10 +11,14 @@ This document follows the conventions laid out in [Keep a CHANGELOG][].
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- Ability to instantiate new .NET arrays using `Array[T](dim1, dim2, ...)` syntax
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<<<<<<< HEAD
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<<<<<<< HEAD
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- Python operator method will call C# operator method for supported binary and unary operators ([#1324][p1324]).
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=======
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- Add Interrupt method in PythonEngine
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>>>>>>> Add Interrupt method in PythonEngine
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=======
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- Add GetNativeThreadID and Interrupt methods in PythonEngine
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>>>>>>> Add GetNativeThreadID method in PythonEngine and different PyThreadState_SetAsyncExc calls for OS and Python version
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### Changed
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- Drop support for Python 2, 3.4, and 3.5

‎src/embed_tests/TestInterrupt.cs‎

Lines changed: 2 additions & 24 deletions
Original file line numberDiff line numberDiff line change
@@ -1,6 +1,5 @@
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using System;
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using System.Runtime.InteropServices;
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using System.Threading;
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using System.Threading.Tasks;
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@@ -14,15 +13,6 @@ public class TestInterrupt
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{
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private IntPtr _threadState;
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[DllImport("Kernel32", EntryPoint = "GetCurrentThreadId", ExactSpelling = true)]
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private static extern uint GetCurrentThreadId();
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[DllImport("libc", EntryPoint = "pthread_self")]
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private static extern IntPtr pthread_selfLinux();
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[DllImport("pthread", EntryPoint = "pthread_self", CallingConvention = CallingConvention.Cdecl)]
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private static extern ulong pthread_selfOSX();
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[OneTimeSetUp]
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public void SetUp()
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{
@@ -44,21 +34,9 @@ public void InterruptTest()
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ulong nativeThreadId = 0;
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Task.Factory.StartNew(() =>
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{
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if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
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{
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nativeThreadId = GetCurrentThreadId();
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}
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else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
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{
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nativeThreadId = (ulong)pthread_selfLinux();
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}
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else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
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{
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nativeThreadId = pthread_selfOSX();
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}
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using (Py.GIL())
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{
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nativeThreadId = PythonEngine.GetNativeThreadID();
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runSimpleStringReturnValue = PythonEngine.RunSimpleString(@"
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import time
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@@ -75,7 +53,7 @@ import time
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Assert.AreEqual(1, interruptReturnValue);
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}
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78-
Thread.Sleep(300);
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Thread.Sleep(500);
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Assert.AreEqual(-1, runSimpleStringReturnValue);
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}

‎src/runtime/pythonengine.cs‎

Lines changed: 57 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -12,6 +12,15 @@ namespace Python.Runtime
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/// </summary>
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public class PythonEngine : IDisposable
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{
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[DllImport("Kernel32", EntryPoint = "GetCurrentThreadId", ExactSpelling = true)]
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private static extern uint GetCurrentThreadId();
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[DllImport("libc", EntryPoint = "pthread_self")]
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private static extern IntPtr pthread_selfLinux();
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[DllImport("pthread", EntryPoint = "pthread_self", CallingConvention = CallingConvention.Cdecl)]
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private static extern ulong pthread_selfOSX();
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public static ShutdownMode ShutdownMode
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{
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get => Runtime.ShutdownMode;
@@ -567,14 +576,59 @@ public static void Exec(string code, IntPtr? globals = null, IntPtr? locals = nu
567576
}
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}
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579+
/// <summary>
580+
/// Gets the native thread ID.
581+
/// </summary>
582+
/// <returns>The native thread ID.</returns>
583+
public static ulong GetNativeThreadID()
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{
585+
if (Runtime.PyVersion >= new Version(3, 8))
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{
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dynamic threading = Py.Import("threading");
588+
return threading.get_native_id();
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}
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if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
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{
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return GetCurrentThreadId();
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}
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if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
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{
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return (ulong)pthread_selfLinux();
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}
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if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
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{
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return pthread_selfOSX();
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}
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return 0;
607+
}
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570609
/// <summary>
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/// Interrupts the execution of a thread.
572611
/// </summary>
573-
/// <param name="nativeThreadId">The native thread id.</param>
612+
/// <param name="nativeThreadID">The native thread ID.</param>
574613
/// <returns>The number of thread states modified; this is normally one, but will be zero if the thread id isn’t found.</returns>
575-
public static int Interrupt(ulong nativeThreadId)
614+
public static int Interrupt(ulong nativeThreadID)
576615
{
577-
return Runtime.PyThreadState_SetAsyncExc(nativeThreadId, Exceptions.KeyboardInterrupt);
616+
if (Runtime.PyVersion >= new Version(3, 7))
617+
{
618+
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
619+
{
620+
return Runtime.PyThreadState_SetAsyncExc37Windows(nativeThreadID, Exceptions.KeyboardInterrupt);
621+
}
622+
623+
return Runtime.PyThreadState_SetAsyncExc37NonWindows((UIntPtr)nativeThreadID, Exceptions.KeyboardInterrupt);
624+
}
625+
626+
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
627+
{
628+
return Runtime.PyThreadState_SetAsyncExc36Windows((long)nativeThreadID, Exceptions.KeyboardInterrupt);
629+
}
630+
631+
return Runtime.PyThreadState_SetAsyncExc36NonWindows((IntPtr)nativeThreadID, Exceptions.KeyboardInterrupt);
578632
}
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580634
/// <summary>

‎src/runtime/runtime.cs‎

Lines changed: 11 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -2146,8 +2146,17 @@ internal static void Py_CLEAR(ref IntPtr ob)
21462146
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
21472147
internal static extern int Py_AddPendingCall(IntPtr func, IntPtr arg);
21482148

2149-
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
2150-
internal static extern int PyThreadState_SetAsyncExc(ulong id, IntPtr exc);
2149+
[DllImport(_PythonDll, EntryPoint = "PyThreadState_SetAsyncExc", CallingConvention = CallingConvention.Cdecl)]
2150+
internal static extern int PyThreadState_SetAsyncExc37Windows(ulong id, IntPtr exc);
2151+
2152+
[DllImport(_PythonDll, EntryPoint = "PyThreadState_SetAsyncExc", CallingConvention = CallingConvention.Cdecl)]
2153+
internal static extern int PyThreadState_SetAsyncExc36Windows(long id, IntPtr exc);
2154+
2155+
[DllImport(_PythonDll, EntryPoint = "PyThreadState_SetAsyncExc", CallingConvention = CallingConvention.Cdecl)]
2156+
internal static extern int PyThreadState_SetAsyncExc37NonWindows(UIntPtr id, IntPtr exc);
2157+
2158+
[DllImport(_PythonDll, EntryPoint = "PyThreadState_SetAsyncExc", CallingConvention = CallingConvention.Cdecl)]
2159+
internal static extern int PyThreadState_SetAsyncExc36NonWindows(IntPtr id, IntPtr exc);
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21522161
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
21532162
internal static extern int Py_MakePendingCalls();

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