SDL: DOS: yield audio thread even when the ring buffer has space

SDL Commits
1 
From ce85ee87f61527c4615beb69e21713e098c5738b Mon Sep 17 00:00:00 2001
From: x0r <[EMAIL REDACTED]>
Date: Thu, 10 Sep 2026 16:19:40 +0200
Subject: [PATCH] DOS: yield audio thread even when the ring buffer has space

---
 src/audio/dos/SDL_dosaudio_sb.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/audio/dos/SDL_dosaudio_sb.c b/src/audio/dos/SDL_dosaudio_sb.c
index bf53adec4fe1e..2958c5609da94 100644
--- a/src/audio/dos/SDL_dosaudio_sb.c
+++ b/src/audio/dos/SDL_dosaudio_sb.c
@@ -170,6 +170,10 @@ static bool DOSSOUNDBLASTER_WaitDevice(SDL_AudioDevice *device)
     struct SDL_PrivateAudioData *hidden = device->hidden;
     const int size = hidden->ring_size;
 
+    // Slow mixing can keep the ring below capacity indefinitely. Yield even
+    // when there is room so the cooperative main thread can process events.
+    DOS_Yield();
+
     for (;;) {
         // Available space = ring_size - (write - read).
         // ring_write is ours (audio thread only), ring_read is advanced by