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py/mpstate: Schedule KeyboardInterrupt on main thread.

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This introduces a new macro to get the main thread and uses it to ensure
that asynchronous exceptions such as KeyboardInterrupt (CTRL+C) are only
scheduled on the main thread. This is more deterministic than being
scheduled on a random thread and is more in line with CPython that only
allow signal handlers to run on the main thread.

Fixes issue #7026.

Signed-off-by: David Lechner <david@pybricks.com>
This commit is contained in:
David Lechner
2021-05-10 22:18:17 -05:00
committed by Damien George
parent ca920f7218
commit 259d9b69fe
6 changed files with 10 additions and 7 deletions
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2
ports/pic16bit/board.c
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@@ -140,7 +140,7 @@ int switch_get(int sw) {
// TODO need an irq
void uart_rx_irq(void) {
if (c == interrupt_char) {
MP_STATE_THREAD(mp_pending_exception) = MP_STATE_PORT(keyboard_interrupt_obj);
MP_STATE_MAIN_THREAD(mp_pending_exception) = MP_STATE_PORT(keyboard_interrupt_obj);
}
}
*/