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Re: [Qemu-devel] [PATCH] 9pfs: changed to use event_notifier instead of
From: |
SeokYeon Hwang |
Subject: |
Re: [Qemu-devel] [PATCH] 9pfs: changed to use event_notifier instead of qemu_pipe |
Date: |
Thu, 06 Nov 2014 10:38:34 +0900 |
Please review this patch.
Thanks.
> -----Original Message-----
> From: SeokYeon Hwang [mailto:address@hidden
> Sent: Friday, October 31, 2014 5:04 PM
> To: address@hidden
> Cc: address@hidden; SeokYeon Hwang
> Subject: [PATCH] 9pfs: changed to use event_notifier instead of qemu_pipe
>
> Changed to use event_notifier instead of qemu_pipe.
> It is necessary for porting 9pfs to Windows and MacOS.
>
> Signed-off-by: SeokYeon Hwang <address@hidden>
> ---
> hw/9pfs/virtio-9p-coth.c | 29 +++++++----------------------
> hw/9pfs/virtio-9p-coth.h | 4 ++--
> 2 files changed, 9 insertions(+), 24 deletions(-)
>
> diff --git a/hw/9pfs/virtio-9p-coth.c b/hw/9pfs/virtio-9p-coth.c index
> ae6cde8..8185c53 100644
> --- a/hw/9pfs/virtio-9p-coth.c
> +++ b/hw/9pfs/virtio-9p-coth.c
> @@ -14,6 +14,7 @@
>
> #include "fsdev/qemu-fsdev.h"
> #include "qemu/thread.h"
> +#include "qemu/event_notifier.h"
> #include "block/coroutine.h"
> #include "virtio-9p-coth.h"
>
> @@ -26,15 +27,11 @@ void co_run_in_worker_bh(void *opaque)
> g_thread_pool_push(v9fs_pool.pool, co, NULL); }
>
> -static void v9fs_qemu_process_req_done(void *arg)
> +static void v9fs_qemu_process_req_done(EventNotifier *e)
> {
> - char byte;
> - ssize_t len;
> Coroutine *co;
>
> - do {
> - len = read(v9fs_pool.rfd, &byte, sizeof(byte));
> - } while (len == -1 && errno == EINTR);
> + event_notifier_test_and_clear(e);
>
> while ((co = g_async_queue_try_pop(v9fs_pool.completed)) != NULL) {
> qemu_coroutine_enter(co, NULL); @@ -43,22 +40,18 @@ static void
> v9fs_qemu_process_req_done(void *arg)
>
> static void v9fs_thread_routine(gpointer data, gpointer user_data) {
> - ssize_t len;
> - char byte = 0;
> Coroutine *co = data;
>
> qemu_coroutine_enter(co, NULL);
>
> g_async_queue_push(v9fs_pool.completed, co);
> - do {
> - len = write(v9fs_pool.wfd, &byte, sizeof(byte));
> - } while (len == -1 && errno == EINTR);
> +
> + event_notifier_set(&v9fs_pool.e);
> }
>
> int v9fs_init_worker_threads(void)
> {
> int ret = 0;
> - int notifier_fds[2];
> V9fsThPool *p = &v9fs_pool;
> sigset_t set, oldset;
>
> @@ -66,10 +59,6 @@ int v9fs_init_worker_threads(void)
> /* Leave signal handling to the iothread. */
> pthread_sigmask(SIG_SETMASK, &set, &oldset);
>
> - if (qemu_pipe(notifier_fds) == -1) {
> - ret = -1;
> - goto err_out;
> - }
> p->pool = g_thread_pool_new(v9fs_thread_routine, p, -1, FALSE, NULL);
> if (!p->pool) {
> ret = -1;
> @@ -84,13 +73,9 @@ int v9fs_init_worker_threads(void)
> ret = -1;
> goto err_out;
> }
> - p->rfd = notifier_fds[0];
> - p->wfd = notifier_fds[1];
> -
> - fcntl(p->rfd, F_SETFL, O_NONBLOCK);
> - fcntl(p->wfd, F_SETFL, O_NONBLOCK);
> + event_notifier_init(&p->e, 0);
>
> - qemu_set_fd_handler(p->rfd, v9fs_qemu_process_req_done, NULL, NULL);
> + event_notifier_set_handler(&p->e, v9fs_qemu_process_req_done);
> err_out:
> pthread_sigmask(SIG_SETMASK, &oldset, NULL);
> return ret;
> diff --git a/hw/9pfs/virtio-9p-coth.h b/hw/9pfs/virtio-9p-coth.h index
> 86d5ed4..4f51b25 100644
> --- a/hw/9pfs/virtio-9p-coth.h
> +++ b/hw/9pfs/virtio-9p-coth.h
> @@ -21,8 +21,8 @@
> #include <glib.h>
>
> typedef struct V9fsThPool {
> - int rfd;
> - int wfd;
> + EventNotifier e;
> +
> GThreadPool *pool;
> GAsyncQueue *completed;
> } V9fsThPool;
> --
> 2.1.0
- Re: [Qemu-devel] [PATCH] 9pfs: changed to use event_notifier instead of qemu_pipe,
SeokYeon Hwang <=