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Re: [Qemu-block] [PATCH v2 1/1] util/aio-win32: Only select on what we a
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-block] [PATCH v2 1/1] util/aio-win32: Only select on what we are actually waiting for |
Date: |
Thu, 6 Jul 2017 19:13:49 -0400 (EDT) |
Looks good, but I noticed now that you may want to do that for
qio_channel_create_socket_watch too.
Paolo
----- Original Message -----
> From: "Alistair Francis" <address@hidden>
> To: address@hidden, address@hidden, address@hidden
> Cc: "alistair francis" <address@hidden>, address@hidden, "edgar iglesias"
> <address@hidden>, address@hidden, address@hidden, address@hidden
> Sent: Thursday, July 6, 2017 10:15:14 PM
> Subject: [PATCH v2 1/1] util/aio-win32: Only select on what we are actually
> waiting for
>
> Signed-off-by: Alistair Francis <address@hidden>
> Acked-by: Edgar E. Iglesias <address@hidden>
> Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
> ---
> Changes in V2:
> - Rebase on master
> Changes since RFC:
> - Include more bitmasks for the select call
>
> 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 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);
> --
> 2.11.0
>
>