Rebase to pythonnet master#20
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still need to look at windows case
* fixed bug of method PyString_FromString * fixup! fixed bug of method PyString_FromString * removed spaces * Update appveyor.yml * Update requirements.txt * Update conversiontest.cs * Update test_conversion.py
Travis now has msbuild 15 available, which breaks the no-arg build since it's using the pythonnet.sln which is msbuild 14. Fixed by forcing the use of msbuild 14. Appveyor on py34 is failing to build psutil; newer python and py27 are using binary releases so the problem doesn't show up. I couldn't figure out how to fix it, so I made it an allowed failure.
The Unity editor unloads the C# domain and creates a new domain every time it recompiles C# sources. This caused two crashes. 1. After a domain unload, python is now pointing to a bunch of objects whose C# side is now garbage. Solution: Shutdown() the engine on domain reload, which calls Py_Finalize. 2. After a domain unload, Py_Finalize, and a new Py_Intialize, python still keeps pointers in gc for any python objects that were leaked. And pythonnet leaks. This means that python's gc will be calling tp_traverse, tp_clear, and tp_is_gc on types that are implemented in C#. This crashes because the implementation was freed. Solution: implement those calls in code that is *not* released on domain unload. Side effect: we leak a page on every domain unload. I suspect but didn't test that python gc performance will be slightly faster. Changes required to implement and test: 3. Use python's platform package to determine what we're running on, so we can use the right mmap/mprotect or VirtualAlloc/VirtualProtect routines, the right flags for mmap, and (theoretically) the right native code. Side effect: to port to a new platform requires updating some additional code now. 4. New unit tests. (a) A new test for domain reload. It doesn't run under .NET Core because you can't create and unload a domain in .NET Core. (b) New unit tests to help us find where to add support for new platforms.
Minimal Py_IntializeEx change
Convertes System.Decimal to decimal.decimal and vice-versa
Converts System.DateTime and System.TimeSpan to datetime.datetime and datetime.timedelta and vice-versa
DECREF'ing datetime timezone argument when DateTimeKind is Unspecified was causing `Fatal Python error: deallocating None` because the object was set to `Runtime.PyNone`. Fixed the input to datetime constructor as we were passing milliseconds, where it should be microseconds.
- C# decimal conversion will use C# double and python float due to the big performance impact of converting C# decimal to python decimal.
| Exceptions.Clear(); | ||
| // Make sure we clean up properly on app domain unload. | ||
| AppDomain.CurrentDomain.DomainUnload += OnDomainUnload; |
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is the application and pythonnet running in the same app domain?
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Yes. AppDomain.CurrentDomain is QuantConnect.Lean.Launcher.exe when I run Lean.
jaredbroad approved these changes Jan 15, 2019
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