---
name: "al_signal_cond"
section: "3"
platform: "linux"
package: "allegro"
version: "5.2.11.3-2"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/al_signal_cond"
---

# al\_signal\_cond(3)

Allegro 5 API

## NAME

al\_signal\_cond - Allegro 5 API

## SYNOPSIS

-

  ```
  #include <allegro5/allegro.h>
  void al_signal_cond(ALLEGRO_COND *cond)
  ```

## DESCRIPTION

Unblock at least one thread waiting on a condition variable.

Generally you should use [al\_broadcast\_cond(3)](/al_broadcast_cond/3.md) but [al\_signal\_cond(3)](/al_signal_cond/3.md) may be more efficient when it’s applicable.

## SEE ALSO

[al\_broadcast\_cond(3)](/al_broadcast_cond/3.md).