[lttng-dev] [PATCH urcu 1/4] Fix: compat_futex_noasync on Cygwin

[Michael Jeanson]

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 at efficios.com>
---
 include/urcu/futex.h | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

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,
-- 
2.17.1