Add return status to zix_ring_mlock()

2 files changed, 6 insertions, 5 deletions

diff --git a/include/zix/ring.h b/include/zix/ring.h
index 872f963..8100d2b 100644
--- a/include/zix/ring.h
+++ b/include/zix/ring.h
@@ -66,7 +66,7 @@ zix_ring_free(ZixRing* ZIX_NULLABLE ring);
    using the ring.
 */
 ZIX_API
-void
+ZixStatus
 zix_ring_mlock(ZixRing* ZIX_NONNULL ring);
 
 /**
diff --git a/src/ring.c b/src/ring.c
index 922def8..4932e9e 100644
--- a/src/ring.c
+++ b/src/ring.c
@@ -14,7 +14,7 @@
 #  define ZIX_MLOCK(ptr, size) mlock((ptr), (size))
 #elif defined(_WIN32)
 #  include <windows.h>
-#  define ZIX_MLOCK(ptr, size) VirtualLock((ptr), (size))
+#  define ZIX_MLOCK(ptr, size) !VirtualLock((ptr), (size))
 #else
 #  pragma message("warning: No memory locking, possible RT violations")
 #  define ZIX_MLOCK(ptr, size)
@@ -106,11 +106,12 @@ zix_ring_free(ZixRing* const ring)
   }
 }
 
-void
+ZixStatus
 zix_ring_mlock(ZixRing* const ring)
 {
-  ZIX_MLOCK(ring, sizeof(ZixRing));
-  ZIX_MLOCK(ring->buf, ring->size);
+  return (ZIX_MLOCK(ring, sizeof(ZixRing)) || ZIX_MLOCK(ring->buf, ring->size))
+           ? ZIX_STATUS_ERROR
+           : ZIX_STATUS_SUCCESS;
 }
 
 void