From: Christian Brauner <christian.brauner@ubuntu.com>
Date: Wed, 11 Aug 2021 14:54:34 +0000 (+0200)
Subject: mainloop: add comments about multishot and oneshot cleanup
X-Git-Tag: lxc-4.0.11~217
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=3f3e75c4e21450aabbe1a38ee6118fedf3aa2b1e;p=thirdparty%2Flxc.git

mainloop: add comments about multishot and oneshot cleanup

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---

diff --git a/src/lxc/mainloop.c b/src/lxc/mainloop.c
index 8371cc066..473946de8 100644
--- a/src/lxc/mainloop.c
+++ b/src/lxc/mainloop.c
@@ -292,7 +292,17 @@ static int __lxc_mainloop_io_uring(struct lxc_async_descr *descr, int timeout_ms
 					return -1;
 				break;
 			case LXC_MAINLOOP_DISARM:
+				/*
+				 * If this is a multhishot handler we need to
+				 * disarm it here. Actual cleanup happens
+				 * later.
+				 */
 				disarm_handler(descr, handler, oneshot);
+				/*
+				 * If this is a oneshot handler we know it has
+				 * just run and we also know the above call was
+				 * a nop. So clean it up directly.
+				 */
 				if (oneshot)
 					delete_handler(handler);
 				break;