From: Michael Jeanson <mjeanson@efficios.com>
Date: Fri, 23 Nov 2018 20:27:04 +0000 (-0500)
Subject: Fix: compat_futex_noasync on Cygwin
X-Git-Tag: v0.10.2~10
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=b197ce865b0de8c475f3ddeadeae3a66b15ace21;p=userspace-rcu.git

Fix: compat_futex_noasync on Cygwin

The futex_noasync compat code uses a weak symbol to share state across
different shared object which is not possible on Windows with the
Portable Executable format. Use the async compat code for both cases.

Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/include/urcu/futex.h b/include/urcu/futex.h
index 0486ff6..753df62 100644
--- a/include/urcu/futex.h
+++ b/include/urcu/futex.h
@@ -102,6 +102,25 @@ static inline int futex_async(int32_t *uaddr, int op, int32_t val,
 	return ret;
 }
 
+#elif defined(__CYGWIN__)
+
+/*
+ * The futex_noasync compat code uses a weak symbol to share state across
+ * different shared object which is not possible on Windows with the
+ * Portable Executable format. Use the async compat code for both cases.
+ */
+static inline int futex_noasync(int32_t *uaddr, int op, int32_t val,
+		const struct timespec *timeout, int32_t *uaddr2, int32_t val3)
+{
+	return compat_futex_async(uaddr, op, val, timeout, uaddr2, val3);
+}
+
+static inline int futex_async(int32_t *uaddr, int op, int32_t val,
+		const struct timespec *timeout, int32_t *uaddr2, int32_t val3)
+{
+	return compat_futex_async(uaddr, op, val, timeout, uaddr2, val3);
+}
+
 #else
 
 static inline int futex_noasync(int32_t *uaddr, int op, int32_t val,