サンプル

Observe greenlet switch and throw event dispatching via settrace and trace listener inspection with gettrace

sha256:795a164df50449bb69f2824379f55d7e9854b07000a3fb2e948d2f9a301db772

MIT-0

実行証拠

宣言された環境と署名済みの実行を分けてあります。このサンプルが何をどこで実行したかをそのまま確認できます。

宣言された環境 linux 24 · ubuntu · glibc 2.39 x64 pip

環境	コントラクト	ステージ	実行日
python 3.12 · linux alpine/x64 · docker ed25519:c1973797be207ac4	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1python:3.12-alpine@sha256:d09d15e60962…	2026-08-28

HOW

ゴール: Observe greenlet switch and throw event dispatching via settrace and trace listener inspection with gettrace
パッケージ: greenlet 3.5.4
シンボル: greenlet.getcurrent
greenlet.gettrace
greenlet.greenlet
greenlet.settrace
作成日: 2026-08-28T03:43:14Z

greenlet.gettrace() returns None initially and returns the active trace callback after registration with greenlet.settrace().
greenlet.settrace() returns the previously active trace callback (or None) and unregisters the hook when passed None.
A coroutine switch via greenlet.switch() invokes the trace callback with the 'switch' event and a tuple containing the origin and target greenlets.
Dispatching an exception into a suspended greenlet via greenlet.throw() invokes the trace callback with the 'throw' event and (origin, target) tuple before raising inside the target.
greenlet.getcurrent() evaluated inside the trace callback returns the target greenlet rather than the origin greenlet.
An exception raised inside the trace callback aborts the switch and propagates out to the caller.

匿名