From 8c52dfa0096ece368eb04435641dfac895ddcaa7 Mon Sep 17 00:00:00 2001
From: zeropool <1285055670@qq.com>
Date: Wed, 20 May 2020 10:37:43 +0800
Subject: [PATCH] sched_yield support for non-POSIX windows gcc

---
 chan/eb_chan.h | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/chan/eb_chan.h b/chan/eb_chan.h
index e4855b4..72189e1 100644
--- a/chan/eb_chan.h
+++ b/chan/eb_chan.h
@@ -30,6 +30,13 @@
 
 #include <stdint.h>
 
+#if (defined(__MINGW32__) || defined(__CYGWIN__)) && !defined(_POSIX_PRIORITY_SCHEDULING)
+#include <windows.h>
+int sched_yield() {
+    return SwitchToThread();
+}
+#endif
+
 typedef uint64_t eb_nsec; /* Units of nanoseconds */
 #define eb_nsec_zero UINT64_C(0)
 #define eb_nsec_forever UINT64_MAX
@@ -1436,4 +1443,4 @@ eb_chan_op *eb_chan_select_list(eb_nsec timeout, eb_chan_op *const ops[], size_t
 
     return result;
 }
-#endif /* EB_CHAN_H */
\ No newline at end of file
+#endif /* EB_CHAN_H */