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fix(coding-agent): keep suspend resume alive on fg closes #2454

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Mario Zechner
2026-03-20 11:55:43 +01:00
parent 8705fbee54
commit 75fc6d088d
3 changed files with 135 additions and 4 deletions
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20
packages/coding-agent/src/modes/interactive/interactive-mode.ts
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@@ -2700,6 +2700,11 @@ export class InteractiveMode {
}
private handleCtrlZ(): void {
// Keep the event loop alive while suspended. Without this, stopping the TUI
// can leave Node with no ref'ed handles, causing the process to exit on fg
// before the SIGCONT handler gets a chance to restore the terminal.
const suspendKeepAlive = setInterval(() => {}, 2 ** 30);
// Ignore SIGINT while suspended so Ctrl+C in the terminal does not
// kill the backgrounded process. The handler is removed on resume.
const ignoreSigint = () => {};
@@ -2707,16 +2712,23 @@ export class InteractiveMode {
// Set up handler to restore TUI when resumed
process.once("SIGCONT", () => {
clearInterval(suspendKeepAlive);
process.removeListener("SIGINT", ignoreSigint);
this.ui.start();
this.ui.requestRender(true);
});
// Stop the TUI (restore terminal to normal mode)
this.ui.stop();
try {
// Stop the TUI (restore terminal to normal mode)
this.ui.stop();
// Send SIGTSTP to process group (pid=0 means all processes in group)
process.kill(0, "SIGTSTP");
// Send SIGTSTP to process group (pid=0 means all processes in group)
process.kill(0, "SIGTSTP");
} catch (error) {
clearInterval(suspendKeepAlive);
process.removeListener("SIGINT", ignoreSigint);
throw error;
}
}
private async handleFollowUp(): Promise<void> {