From aa60936bc7a719ee4d5d556f99636f0013bfbdc1 Mon Sep 17 00:00:00 2001
From: DreamMaoMao <2523610504@qq.com>
Date: Sun, 15 Feb 2026 14:08:12 +0800
Subject: [PATCH] fix: if the progress not the child of main, not assume it is
 stop

---
 src/client/client.h | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/client/client.h b/src/client/client.h
index 6b13150..512e8a5 100644
--- a/src/client/client.h
+++ b/src/client/client.h
@@ -254,10 +254,13 @@ static inline int32_t client_is_stopped(Client *c) {
 	wl_client_get_credentials(c->surface.xdg->client->client, &pid, NULL, NULL);
 	if (waitid(P_PID, pid, &in, WNOHANG | WCONTINUED | WSTOPPED | WNOWAIT) <
 		0) {
-		/* This process is not our child process, while is very unlikely that
-		 * it is stopped, in order to do not skip frames assume that it is. */
+		/* This process is not our child process. We cannot determine its
+		 * stopped state; assume it is not stopped to avoid blocking frame skip.
+		 */
 		if (errno == ECHILD)
-			return 1;
+			return 0; // if not our child, assume not stopped
+		/* Other errors, also assume not stopped. */
+		return 0;
 	} else if (in.si_pid) {
 		if (in.si_code == CLD_STOPPED || in.si_code == CLD_TRAPPED)
 			return 1;