From 485b7b6e4111769a134af181e6bc169c8e394135 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Dec 05 2020 11:45:47 +0000
Subject: __ntapi_msq_recv(): obtain atomic lock via loop as needed.


---

diff --git a/src/msq/ntapi_msq_recv.c b/src/msq/ntapi_msq_recv.c
index 4ef1784..6850312 100644
--- a/src/msq/ntapi_msq_recv.c
+++ b/src/msq/ntapi_msq_recv.c
@@ -79,10 +79,10 @@ int32_t __stdcall __ntapi_msq_recv(
 	/* lock */
 	hlock = &(__ntapi_internals()->hlock);
 
-	if (at_locked_cas(hlock,0,1))
-		return __msq_recv_return(
-			mapaddr,0,
-			NT_STATUS_RESOURCE_NOT_OWNED);
+	while (at_locked_cas(hlock,0,1))
+		__ntapi->zw_delay_execution(
+			NT_SYNC_NON_ALERTABLE,
+			&(nt_timeout){{0,0}});
 
 	/* msg */
 	__ntapi->tt_aligned_block_memset(