From 55d41b16eec5041bf94de9b687bf51a67fdf736d Mon Sep 17 00:00:00 2001
From: Alistair Francis <alistair.francis@xilinx.com>
Date: Thu, 6 Jul 2017 13:15:14 -0700
Subject: [PATCH] util/aio-win32: Only select on what we are actually waiting
for
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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>
---
util/aio-win32.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/util/aio-win32.c b/util/aio-win32.c
index bca496a47a4..d6d5e02f009 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);
--
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