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From: Michael Roth <mdroth@linux.vnet.ibm.com>
To: qemu-devel@nongnu.org
Cc: qemu-stable@nongnu.org
Subject: [Qemu-devel] [PATCH 01/32] char: move backends' io watch tag to CharDriverState
Date: Wed,  4 Dec 2013 08:34:08 -0600	[thread overview]
Message-ID: <1386167679-13021-2-git-send-email-mdroth@linux.vnet.ibm.com> (raw)
In-Reply-To: <1386167679-13021-1-git-send-email-mdroth@linux.vnet.ibm.com>

From: Amit Shah <amit.shah@redhat.com>

All the backends implement an io watcher tag for callbacks.  Move it to
CharDriverState from each backend's struct to make accessing the tag from
backend-neutral functions easier.

This will be used later to cancel a callback on chardev detach from a
frontend.

CC: <qemu-stable@nongnu.org>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
(cherry picked from commit 7ba9addc165b37b764baa08c02518b15b2361707)

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
 include/sysemu/char.h |    1 +
 qemu-char.c           |   77 +++++++++++++++++++++++++------------------------
 2 files changed, 40 insertions(+), 38 deletions(-)

diff --git a/include/sysemu/char.h b/include/sysemu/char.h
index 8053130..ad101d9 100644
--- a/include/sysemu/char.h
+++ b/include/sysemu/char.h
@@ -78,6 +78,7 @@ struct CharDriverState {
     int explicit_be_open;
     int avail_connections;
     int is_mux;
+    guint fd_in_tag;
     QemuOpts *opts;
     QTAILQ_ENTRY(CharDriverState) next;
 };
diff --git a/qemu-char.c b/qemu-char.c
index 1621fbd..1dc1646 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -798,7 +798,6 @@ static int io_channel_send(GIOChannel *fd, const void *buf, size_t len)
 typedef struct FDCharDriver {
     CharDriverState *chr;
     GIOChannel *fd_in, *fd_out;
-    guint fd_in_tag;
     int max_size;
     QTAILQ_ENTRY(FDCharDriver) node;
 } FDCharDriver;
@@ -830,9 +829,9 @@ static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
     status = g_io_channel_read_chars(chan, (gchar *)buf,
                                      len, &bytes_read, NULL);
     if (status == G_IO_STATUS_EOF) {
-        if (s->fd_in_tag) {
-            io_remove_watch_poll(s->fd_in_tag);
-            s->fd_in_tag = 0;
+        if (chr->fd_in_tag) {
+            io_remove_watch_poll(chr->fd_in_tag);
+            chr->fd_in_tag = 0;
         }
         qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
         return FALSE;
@@ -863,13 +862,14 @@ static void fd_chr_update_read_handler(CharDriverState *chr)
 {
     FDCharDriver *s = chr->opaque;
 
-    if (s->fd_in_tag) {
-        io_remove_watch_poll(s->fd_in_tag);
-        s->fd_in_tag = 0;
+    if (chr->fd_in_tag) {
+        io_remove_watch_poll(chr->fd_in_tag);
+        chr->fd_in_tag = 0;
     }
 
     if (s->fd_in) {
-        s->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll, fd_chr_read, chr);
+        chr->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll,
+                                           fd_chr_read, chr);
     }
 }
 
@@ -877,9 +877,9 @@ static void fd_chr_close(struct CharDriverState *chr)
 {
     FDCharDriver *s = chr->opaque;
 
-    if (s->fd_in_tag) {
-        io_remove_watch_poll(s->fd_in_tag);
-        s->fd_in_tag = 0;
+    if (chr->fd_in_tag) {
+        io_remove_watch_poll(chr->fd_in_tag);
+        chr->fd_in_tag = 0;
     }
 
     if (s->fd_in) {
@@ -1012,7 +1012,6 @@ static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
 
 typedef struct {
     GIOChannel *fd;
-    guint fd_tag;
     int connected;
     int read_bytes;
     guint timer_tag;
@@ -1123,9 +1122,9 @@ static void pty_chr_state(CharDriverState *chr, int connected)
     PtyCharDriver *s = chr->opaque;
 
     if (!connected) {
-        if (s->fd_tag) {
-            io_remove_watch_poll(s->fd_tag);
-            s->fd_tag = 0;
+        if (chr->fd_in_tag) {
+            io_remove_watch_poll(chr->fd_in_tag);
+            chr->fd_in_tag = 0;
         }
         s->connected = 0;
         /* (re-)connect poll interval for idle guests: once per second.
@@ -1140,7 +1139,8 @@ static void pty_chr_state(CharDriverState *chr, int connected)
         if (!s->connected) {
             s->connected = 1;
             qemu_chr_be_generic_open(chr);
-            s->fd_tag = io_add_watch_poll(s->fd, pty_chr_read_poll, pty_chr_read, chr);
+            chr->fd_in_tag = io_add_watch_poll(s->fd, pty_chr_read_poll,
+                                               pty_chr_read, chr);
         }
     }
 }
@@ -1151,9 +1151,9 @@ static void pty_chr_close(struct CharDriverState *chr)
     PtyCharDriver *s = chr->opaque;
     int fd;
 
-    if (s->fd_tag) {
-        io_remove_watch_poll(s->fd_tag);
-        s->fd_tag = 0;
+    if (chr->fd_in_tag) {
+        io_remove_watch_poll(chr->fd_in_tag);
+        chr->fd_in_tag = 0;
     }
     fd = g_io_channel_unix_get_fd(s->fd);
     g_io_channel_unref(s->fd);
@@ -2161,7 +2161,6 @@ static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
 typedef struct {
     int fd;
     GIOChannel *chan;
-    guint tag;
     uint8_t buf[READ_BUF_LEN];
     int bufcnt;
     int bufptr;
@@ -2217,9 +2216,9 @@ static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
     s->bufcnt = bytes_read;
     s->bufptr = s->bufcnt;
     if (status != G_IO_STATUS_NORMAL) {
-        if (s->tag) {
-            io_remove_watch_poll(s->tag);
-            s->tag = 0;
+        if (chr->fd_in_tag) {
+            io_remove_watch_poll(chr->fd_in_tag);
+            chr->fd_in_tag = 0;
         }
         return FALSE;
     }
@@ -2238,22 +2237,23 @@ static void udp_chr_update_read_handler(CharDriverState *chr)
 {
     NetCharDriver *s = chr->opaque;
 
-    if (s->tag) {
-        io_remove_watch_poll(s->tag);
-        s->tag = 0;
+    if (chr->fd_in_tag) {
+        io_remove_watch_poll(chr->fd_in_tag);
+        chr->fd_in_tag = 0;
     }
 
     if (s->chan) {
-        s->tag = io_add_watch_poll(s->chan, udp_chr_read_poll, udp_chr_read, chr);
+        chr->fd_in_tag = io_add_watch_poll(s->chan, udp_chr_read_poll,
+                                           udp_chr_read, chr);
     }
 }
 
 static void udp_chr_close(CharDriverState *chr)
 {
     NetCharDriver *s = chr->opaque;
-    if (s->tag) {
-        io_remove_watch_poll(s->tag);
-        s->tag = 0;
+    if (chr->fd_in_tag) {
+        io_remove_watch_poll(chr->fd_in_tag);
+        chr->fd_in_tag = 0;
     }
     if (s->chan) {
         g_io_channel_unref(s->chan);
@@ -2304,7 +2304,7 @@ static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
 typedef struct {
 
     GIOChannel *chan, *listen_chan;
-    guint tag, listen_tag;
+    guint listen_tag;
     int fd, listen_fd;
     int connected;
     int max_size;
@@ -2489,9 +2489,9 @@ static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
         if (s->listen_chan) {
             s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
         }
-        if (s->tag) {
-            io_remove_watch_poll(s->tag);
-            s->tag = 0;
+        if (chr->fd_in_tag) {
+            io_remove_watch_poll(chr->fd_in_tag);
+            chr->fd_in_tag = 0;
         }
         g_io_channel_unref(s->chan);
         s->chan = NULL;
@@ -2522,7 +2522,8 @@ static void tcp_chr_connect(void *opaque)
 
     s->connected = 1;
     if (s->chan) {
-        s->tag = io_add_watch_poll(s->chan, tcp_chr_read_poll, tcp_chr_read, chr);
+        chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
+                                           tcp_chr_read, chr);
     }
     qemu_chr_be_generic_open(chr);
 }
@@ -2605,9 +2606,9 @@ static void tcp_chr_close(CharDriverState *chr)
 {
     TCPCharDriver *s = chr->opaque;
     if (s->fd >= 0) {
-        if (s->tag) {
-            io_remove_watch_poll(s->tag);
-            s->tag = 0;
+        if (chr->fd_in_tag) {
+            io_remove_watch_poll(chr->fd_in_tag);
+            chr->fd_in_tag = 0;
         }
         if (s->chan) {
             g_io_channel_unref(s->chan);
-- 
1.7.9.5

  reply	other threads:[~2013-12-04 14:35 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-12-04 14:34 [Qemu-devel] Patch Round-up for stable 1.6.2, freeze on 2013-12-06 Michael Roth
2013-12-04 14:34 ` Michael Roth [this message]
2013-12-04 14:34 ` [Qemu-devel] [PATCH 02/32] char: use common function to disable callbacks on chardev close Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 03/32] char: remove watch callback on chardev detach from frontend Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 04/32] tests: Fix schema parser test for in-tree build Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 05/32] tests: Update .gitignore for test-int128 and test-bitops Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 06/32] tci: Add implementation of rotl_i64, rotr_i64 Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 07/32] bitops: Add rotate functions (rol8, ror8, ...) Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 08/32] misc: Use new rotate functions Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 09/32] qemu-char: Fix potential out of bounds access to local arrays Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 10/32] xen_disk: mark ioreq as mapped before unmapping in error case Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 11/32] vmdk: Fix vmdk_parse_extents Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 12/32] audio: honor QEMU_AUDIO_TIMER_PERIOD instead of waking up every *nano* second Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 13/32] monitor: eliminate monitor_event_state_lock Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 14/32] memory: fix 128 arithmetic in info mtree Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 15/32] Adjust qapi-visit for python-2.4.3 Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 16/32] configure: detect endian via compile test Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 17/32] qapi: fix memleak by adding implict struct functions in dealloc visitor Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 18/32] tests: fix memleak in error path test for input visitor Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 19/32] configure: Explicitly set ARFLAGS so we can build with GNU Make 4.0 Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 20/32] linux-user: Fix stat64 syscall for SPARC64 Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 21/32] virtio-net: only delete bh that existed Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 22/32] exec: fix breakpoint_invalidate when pc may not be translated Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 23/32] Fix pc migration from qemu <= 1.5 Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 24/32] qcow2: count_contiguous_clusters and compression Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 25/32] qcow2: fix possible corruption when reading multiple clusters Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 26/32] vfio-pci: Fix multifunction=on Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 27/32] virtio-net: fix the memory leak in rxfilter_notify() Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 28/32] qom: Fix memory leak in object_property_set_link() Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 29/32] qdev-monitor: Fix crash when device_add is called with abstract driver Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 30/32] qdev-monitor: Unref device when device_add fails Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 31/32] pci: unregister vmstate_pcibus on unplug Michael Roth
2013-12-04 14:34 ` [Qemu-devel] [PATCH 32/32] rng-egd: offset the point when repeatedly read from the buffer Michael Roth
2013-12-05 15:23 ` [Qemu-devel] Patch Round-up for stable 1.6.2, freeze on 2013-12-06 Paolo Bonzini

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