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annotate rust/hg-cpython/src/utils.rs @ 44278:2a24ead003f0

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rust-cpython: add panicking version of borrow_mut() and use it The original borrow_mut() is renamed to try_borrow_mut(). Since leak_immutable() no longer incref the borrow count, the caller should know if the underlying value is borrowed or not. No Python world is involved. That's why we can simply use the panicking borrow_mut().
author Yuya Nishihara <yuya@tcha.org>
date Sat, 12 Oct 2019 23:34:05 +0900
parents 970978975574
children d738b7a18438
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
43251
970978975574 rust-utils: introduce a debug util to print the python stack trace
Rapha?l Gom?s <rgomes@octobus.net>
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1 use cpython::{PyDict, PyObject, PyResult, PyTuple, Python};
970978975574 rust-utils: introduce a debug util to print the python stack trace
Rapha?l Gom?s <rgomes@octobus.net>
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2
970978975574 rust-utils: introduce a debug util to print the python stack trace
Rapha?l Gom?s <rgomes@octobus.net>
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3 #[allow(unused)]
970978975574 rust-utils: introduce a debug util to print the python stack trace
Rapha?l Gom?s <rgomes@octobus.net>
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4 pub fn print_python_trace(py: Python) -> PyResult<PyObject> {
970978975574 rust-utils: introduce a debug util to print the python stack trace
Rapha?l Gom?s <rgomes@octobus.net>
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5 eprintln!("===============================");
970978975574 rust-utils: introduce a debug util to print the python stack trace
Rapha?l Gom?s <rgomes@octobus.net>
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6 eprintln!("Printing Python stack from Rust");
970978975574 rust-utils: introduce a debug util to print the python stack trace
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7 eprintln!("===============================");
970978975574 rust-utils: introduce a debug util to print the python stack trace
Rapha?l Gom?s <rgomes@octobus.net>
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8 let traceback = py.import("traceback")?;
970978975574 rust-utils: introduce a debug util to print the python stack trace
Rapha?l Gom?s <rgomes@octobus.net>
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9 let sys = py.import("sys")?;
970978975574 rust-utils: introduce a debug util to print the python stack trace
Rapha?l Gom?s <rgomes@octobus.net>
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10 let kwargs = PyDict::new(py);
970978975574 rust-utils: introduce a debug util to print the python stack trace
Rapha?l Gom?s <rgomes@octobus.net>
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11 kwargs.set_item(py, "file", sys.get(py, "stderr")?)?;
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Rapha?l Gom?s <rgomes@octobus.net>
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12 traceback.call(py, "print_stack", PyTuple::new(py, &[]), Some(&kwargs))
970978975574 rust-utils: introduce a debug util to print the python stack trace
Rapha?l Gom?s <rgomes@octobus.net>
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13 }