zdevito / custom_loader Goto Github PK

View Code? Open in Web Editor NEW

12.0 12.0 5.0 58 KB

License: BSD 3-Clause "New" or "Revised" License

CMake 1.39% C++ 95.84% Python 2.78%

custom_loader's People

Contributors

Stargazers

Watchers

Forkers

imaginary-person qihqi sanyaade-teachings tinyadapter icodein

custom_loader's Issues

Some corrections in CMake file

Hi, I'm interested in your great work on supporting multiple interpreters in one process.

After testing the sample code in this repo, I have two corrections to the CMake file.

CMake complains about missing cmake_minimum_required.
It seems that you missed src/loader.cpp in the find_shared_function library, which will give me an unresolved symbol error when running the main program.

I use the following CMakelists.txt to successfully build the sample code:

cmake_minimum_required(VERSION 3.17)

project(singleprocessmultiprocess)
set(CMAKE_CXX_STANDARD 17)
add_subdirectory(third_party/fmt)

find_package(Python COMPONENTS Development)
add_library(python_runner SHARED src/python_runner.cpp)
target_include_directories(python_runner PRIVATE third_party/pybind11/include ${Python_INCLUDE_DIRS})

add_library(find_shared_function SHARED src/find_shared_function.cpp src/loader.cpp)
target_link_libraries(find_shared_function PRIVATE fmt::fmt-header-only)

add_executable(main src/main.cpp src/loader.cpp)
target_compile_definitions(main PRIVATE PYTHON_SO_PATH=\"${Python_LIBRARIES}\")
target_link_libraries(main PRIVATE dl pthread fmt::fmt-header-only)

I recommend choosing 3.17 as the minimum required because it introduces the ability to resolve Python paths in an Anaconda environment.

I also have a question about the implementation, for which I will open a new issue.

Extension library loading only works on Python 3.8

I found that the sample code only works in Python 3.8 but not other versions.

When I compile and link with others like 3.7, 3.9 and 3.10, the main program will crash with the error

terminate called after throwing an instance of 'pybind11::error_already_set'
  what():  ImportError: /home/user/anaconda3/envs/customloader/lib/python3.10/lib-dynload/unicodedata.cpython-310-x86_64-linux-gnu.so: undefined symbol: _PyUnicode_Ready

At:
  /home/user/anaconda3/envs/customloader/lib/python3.10/site-packages/regex/_regex_core.py(18): <module>
  <frozen importlib._bootstrap>(241): _call_with_frames_removed
  <frozen importlib._bootstrap_external>(883): exec_module
  <frozen importlib._bootstrap>(703): _load_unlocked
  <frozen importlib._bootstrap>(1006): _find_and_load_unlocked
  <frozen importlib._bootstrap>(1027): _find_and_load
  /home/user/anaconda3/envs/customloader/lib/python3.10/site-packages/regex/regex.py(421): <module>
  <frozen importlib._bootstrap>(241): _call_with_frames_removed
  <frozen importlib._bootstrap_external>(883): exec_module
  <frozen importlib._bootstrap>(703): _load_unlocked
  <frozen importlib._bootstrap>(1006): _find_and_load_unlocked
  <frozen importlib._bootstrap>(1027): _find_and_load
  /home/user/anaconda3/envs/customloader/lib/python3.10/site-packages/regex/__init__.py(1): <module>
  <frozen importlib._bootstrap>(241): _call_with_frames_removed
  <frozen importlib._bootstrap_external>(883): exec_module
  <frozen importlib._bootstrap>(703): _load_unlocked
  <frozen importlib._bootstrap>(1006): _find_and_load_unlocked
  <frozen importlib._bootstrap>(1027): _find_and_load
  <string>(2): <module>

Aborted (core dumped)

It seems that the effort on supporting C extensions does not work at all. But with Python 3.8 the main program runs normally.

I'm not familiar with CPython, so I have no idea why this could happen. Could you please share some thoughts on this problem?

Recommend Projects

React

A declarative, efficient, and flexible JavaScript library for building user interfaces.
Vue.js

🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
Typescript

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
TensorFlow

An Open Source Machine Learning Framework for Everyone
Django

The Web framework for perfectionists with deadlines.
Laravel

A PHP framework for web artisans
D3

Bring data to life with SVG, Canvas and HTML. 📊📈🎉

Recommend Topics

javascript

JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
web

Some thing interesting about web. New door for the world.
server

A server is a program made to process requests and deliver data to clients.
Machine learning

Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Visualization

Some thing interesting about visualization, use data art
Game

Some thing interesting about game, make everyone happy.

Recommend Org

Facebook

We are working to build community through open source technology. NB: members must have two-factor auth.
Microsoft

Open source projects and samples from Microsoft.
Google

Google ❤️ Open Source for everyone.
Alibaba

Alibaba Open Source for everyone
D3

Data-Driven Documents codes.
Tencent

China tencent open source team.