Add some comments.

ericsnowcurrently · ericsnowcurrently · commit e1ba74c056a1 · 2023-10-17T17:07:51.000-06:00
diff --git a/Modules/_xxinterpchannelsmodule.c b/Modules/_xxinterpchannelsmodule.c
@@ -1091,9 +1091,13 @@ static int
 _channelends_is_open(_channelends *ends)
 {
     if (ends->numsendopen != 0 || ends->numrecvopen != 0) {
+        // At least one interpreter is still associated with the channel
+        // (and hasn't been released).
         return 1;
     }
+    // XXX This is wrong if an end can ever be removed.
     if (ends->send == NULL && ends->recv == NULL) {
+        // The channel has never had any interpreters associated with it.
         return 1;
     }
     return 0;

Original file line number	Diff line number	Diff line change
`@@ -1091,9 +1091,13 @@ static int`
`1091`	`1091`	`_channelends_is_open(_channelends *ends)`
`1092`	`1092`	`{`
`1093`	`1093`	`if (ends->numsendopen != 0 \|\| ends->numrecvopen != 0) {`
	`1094`	`+ // At least one interpreter is still associated with the channel`
	`1095`	`+ // (and hasn't been released).`
`1094`	`1096`	`return 1;`
`1095`	`1097`	`}`
	`1098`	`+ // XXX This is wrong if an end can ever be removed.`
`1096`	`1099`	`if (ends->send == NULL && ends->recv == NULL) {`
	`1100`	`+ // The channel has never had any interpreters associated with it.`
`1097`	`1101`	`return 1;`
`1098`	`1102`	`}`
`1099`	`1103`	`return 0;`