From 37da58077db42d7f6c66e53b9ba0dfbe437c7e8a Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: Sat, 5 Dec 2020 11:43:09 +0000
Subject: __ntapi_sem_set(): obtain atomic lock via loop as needed.

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

diff --git a/src/sem/ntapi_sem_set.c b/src/sem/ntapi_sem_set.c
index ab42032..c7833fc 100644
--- a/src/sem/ntapi_sem_set.c
+++ b/src/sem/ntapi_sem_set.c
@@ -92,10 +92,10 @@ int32_t	__stdcall __ntapi_sem_set(
 		/* lock */
 		hlock = &(__ntapi_internals()->hlock);
 
-		if (at_locked_cas(hlock,0,1))
-			return __sem_set_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}});
 
 		/* data copy */
 		__ntapi->tt_generic_memcpy(
-- 
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