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* [Qemu-devel] [PATCH] 9pfs: changed to use event_notifier instead of qemu_pipe
@ 2014-10-31  8:03 SeokYeon Hwang
  2014-11-06  1:38 ` SeokYeon Hwang
  0 siblings, 1 reply; 4+ messages in thread
From: SeokYeon Hwang @ 2014-10-31  8:03 UTC (permalink / raw)
  To: qemu-devel; +Cc: aneesh.kumar, SeokYeon Hwang

Changed to use event_notifier instead of qemu_pipe.
It is necessary for porting 9pfs to Windows and MacOS.

Signed-off-by: SeokYeon Hwang <syeon.hwang@samsung.com>
---
 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

^ permalink raw reply related	[flat|nested] 4+ messages in thread
end of thread, other threads:[~2014-11-06  9:42 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2014-10-31  8:03 [Qemu-devel] [PATCH] 9pfs: changed to use event_notifier instead of qemu_pipe SeokYeon Hwang
2014-11-06  1:38 ` SeokYeon Hwang
2014-11-06  9:16   ` Michael S. Tsirkin
2014-11-06  9:42     ` SeokYeon Hwang

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