From bdb1eae13eefe4cb7d9a990b0280c80fca2bf9dd Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Sat, 5 Dec 2020 11:31:26 +0000
Subject: __ntapi_msq_send(): obtain atomic lock via loop as needed.

---
 src/msq/ntapi_msq_send.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/msq/ntapi_msq_send.c b/src/msq/ntapi_msq_send.c
index f6ca27f..0f7b631 100644
--- a/src/msq/ntapi_msq_send.c
+++ b/src/msq/ntapi_msq_send.c
@@ -77,10 +77,10 @@ int32_t __stdcall __ntapi_msq_send(
 	/* lock */
 	hlock = &(__ntapi_internals()->hlock);
 
-	if (at_locked_cas(hlock,0,1))
-		return __msq_send_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}});
 
 	/* msq data to section */
 	__ntapi->tt_generic_memcpy(
-- 
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