qemu/0003-iohandlers-Add-enable-disable_write_fd_handler-funct.patch

78 lines
1.9 KiB
Diff
Raw Normal View History

2011-08-14 19:24:40 +00:00
>From c8cf564bc5c080540287ecd5bd944d85873755df Mon Sep 17 00:00:00 2001
From: Amit Shah <amit.shah@redhat.com>
Date: Mon, 21 Mar 2011 20:32:58 +0100
2011-08-14 19:24:40 +00:00
Subject: [PATCH 03/28] iohandlers: Add enable/disable_write_fd_handler()
functions
These will be used to provide a cleaner API for the nonblocking case.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
---
iohandler.c | 35 +++++++++++++++++++++++++++++++++++
qemu-char.h | 3 +++
2 files changed, 38 insertions(+), 0 deletions(-)
diff --git a/iohandler.c b/iohandler.c
index 2b82421..8e6628b 100644
--- a/iohandler.c
+++ b/iohandler.c
@@ -44,6 +44,41 @@ typedef struct IOHandlerRecord {
static QLIST_HEAD(, IOHandlerRecord) io_handlers =
QLIST_HEAD_INITIALIZER(io_handlers);
+static IOHandlerRecord *find_iohandler(int fd)
+{
+ IOHandlerRecord *ioh;
+
+ QLIST_FOREACH(ioh, &io_handlers, next) {
+ if (ioh->fd == fd) {
+ return ioh;
+ }
+ }
+ return NULL;
+}
+
+void enable_write_fd_handler(int fd, IOHandler *fd_write)
+{
+ IOHandlerRecord *ioh;
+
+ ioh = find_iohandler(fd);
+ if (!ioh) {
+ return;
+ }
+
+ ioh->fd_write = fd_write;
+}
+
+void disable_write_fd_handler(int fd)
+{
+ IOHandlerRecord *ioh;
+
+ ioh = find_iohandler(fd);
+ if (!ioh) {
+ return;
+ }
+
+ ioh->fd_write = NULL;
+}
/* XXX: fd_read_poll should be suppressed, but an API change is
necessary in the character devices to suppress fd_can_read(). */
diff --git a/qemu-char.h b/qemu-char.h
2011-07-28 17:10:09 +00:00
index b8372ea..9fe1b82 100644
--- a/qemu-char.h
+++ b/qemu-char.h
2011-07-28 17:10:09 +00:00
@@ -123,6 +123,9 @@ size_t qemu_chr_mem_osize(const CharDriverState *chr);
/* async I/O support */
+void enable_write_fd_handler(int fd, IOHandler *fd_write);
+void disable_write_fd_handler(int fd);
+
int qemu_set_fd_handler2(int fd,
IOCanReadHandler *fd_read_poll,
IOHandler *fd_read,
--
1.7.5.1