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authorAlistair Francis <alistair.francis@xilinx.com>2017-07-06 13:15:14 -0700
committerStefan Hajnoczi <stefanha@redhat.com>2017-07-17 15:58:37 +0100
commit55d41b16eec5041bf94de9b687bf51a67fdf736d (patch)
tree8b89c984f9a8803de4f67c02c5d5635cd74dbb10
parent4871b51b9241b10f4fd8e04bbb21577886795e25 (diff)
downloadfocaccia-qemu-55d41b16eec5041bf94de9b687bf51a67fdf736d.tar.gz
focaccia-qemu-55d41b16eec5041bf94de9b687bf51a67fdf736d.zip
util/aio-win32: Only select on what we are actually waiting for
Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 9307b70e9876c4e9e3c4478524a32a23a3d5dd05.1499368180.git.alistair.francis@xilinx.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
-rw-r--r--util/aio-win32.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/util/aio-win32.c b/util/aio-win32.c
index bca496a47a..d6d5e02f00 100644
--- a/util/aio-win32.c
+++ b/util/aio-win32.c
@@ -71,6 +71,7 @@ void aio_set_fd_handler(AioContext *ctx,
         }
     } else {
         HANDLE event;
+        long bitmask = 0;
 
         if (node == NULL) {
             /* Alloc and insert if it's not already there */
@@ -95,10 +96,16 @@ void aio_set_fd_handler(AioContext *ctx,
         node->io_write = io_write;
         node->is_external = is_external;
 
+        if (io_read) {
+            bitmask |= FD_READ | FD_ACCEPT | FD_CLOSE;
+        }
+
+        if (io_write) {
+            bitmask |= FD_WRITE | FD_CONNECT;
+        }
+
         event = event_notifier_get_handle(&ctx->notifier);
-        WSAEventSelect(node->pfd.fd, event,
-                       FD_READ | FD_ACCEPT | FD_CLOSE |
-                       FD_CONNECT | FD_WRITE | FD_OOB);
+        WSAEventSelect(node->pfd.fd, event, bitmask);
     }
 
     qemu_lockcnt_unlock(&ctx->list_lock);