upstream/mercurial-mirror Files · rust/hg-cpython/src/utils.rs

procutil: try and avoid angering CoreFoundation on macOS...

procutil: try and avoid angering CoreFoundation on macOS We've seen failures like this: objc[57662]: +[__NSCFConstantString initialize] may have been in progress in another thread when fork() was called. objc[57662]: +[__NSCFConstantString initialize] may have been in progress in another thread when fork() was called. We cannot safely call it or ignore it in the fork() child process. Crashing instead. Set a breakpoint on objc_initializeAfterForkError to debug. I think this is due to forking off some background processes during `hg update` or similar. I don't have any conclusive proof this is the fork() call that's to blame, but it's the most likely one since the regular `hg update` codepath uses the other fork() invocation (via workers) and we don't get this report from non-Google macOS users. Ugh. Differential Revision: https://phab.mercurial-scm.org/D7615

Raphaël Gomès - - Load All Authors

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             utils.rs
        
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                | application/rls-services+xml
            
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             / rust / hg-cpython / src / utils.rs
          
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      use cpython::{PyDict, PyObject, PyResult, PyTuple, Python};

      #[allow(unused)]

      pub fn print_python_trace(py: Python) -> PyResult<PyObject> {

          eprintln!("===============================");

          eprintln!("Printing Python stack from Rust");

          eprintln!("===============================");

          let traceback = py.import("traceback")?;

          let sys = py.import("sys")?;

          let kwargs = PyDict::new(py);

          kwargs.set_item(py, "file", sys.get(py, "stderr")?)?;

          traceback.call(py, "print_stack", PyTuple::new(py, &[]), Some(&kwargs))

      }

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				use cpython::{PyDict, PyObject, PyResult, PyTuple, Python};

				#[allow(unused)]
				pub fn print_python_trace(py: Python) -> PyResult<PyObject> {
				eprintln!("===============================");
				eprintln!("Printing Python stack from Rust");
				eprintln!("===============================");
				let traceback = py.import("traceback")?;
				let sys = py.import("sys")?;
				let kwargs = PyDict::new(py);
				kwargs.set_item(py, "file", sys.get(py, "stderr")?)?;
				traceback.call(py, "print_stack", PyTuple::new(py, &[]), Some(&kwargs))
				}