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io: add methods to set I/O handlers on AioContext 

This is in preparation for making qio_channel_yield work on
AioContexts other than the main one.

Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 20170213135235.12274-6-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Paolo Bonzini 2017-02-13 14:52:22 +01:00 committed by Stefan Hajnoczi
parent 934ebf48c0
commit bf88c1247f
7 changed files with 89 additions and 5 deletions
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25
include/io/channel.h
View File

@ -23,6 +23,7 @@
#include "qemu-common.h"
#include "qom/object.h"
#include "block/aio.h"
#define TYPE_QIO_CHANNEL "qio-channel"
#define QIO_CHANNEL(obj) \
@ -132,6 +133,11 @@ struct QIOChannelClass {
off_t offset,
int whence,
Error **errp);
void (*io_set_aio_fd_handler)(QIOChannel *ioc,
AioContext *ctx,
IOHandler *io_read,
IOHandler *io_write,
void *opaque);
};
/* General I/O handling functions */
@ -525,4 +531,23 @@ void qio_channel_yield(QIOChannel *ioc,
void qio_channel_wait(QIOChannel *ioc,
GIOCondition condition);
/**
* qio_channel_set_aio_fd_handler:
* @ioc: the channel object
* @ctx: the AioContext to set the handlers on
* @io_read: the read handler
* @io_write: the write handler
* @opaque: the opaque value passed to the handler
*
* This is used internally by qio_channel_yield(). It can
* be used by channel implementations to forward the handlers
* to another channel (e.g. from #QIOChannelTLS to the
* underlying socket).
*/
void qio_channel_set_aio_fd_handler(QIOChannel *ioc,
AioContext *ctx,
IOHandler *io_read,
IOHandler *io_write,
void *opaque);
#endif /* QIO_CHANNEL_H */

13
io/channel-command.c
View File

@ -328,6 +328,18 @@ static int qio_channel_command_close(QIOChannel *ioc,
}
static void qio_channel_command_set_aio_fd_handler(QIOChannel *ioc,
AioContext *ctx,
IOHandler *io_read,
IOHandler *io_write,
void *opaque)
{
QIOChannelCommand *cioc = QIO_CHANNEL_COMMAND(ioc);
aio_set_fd_handler(ctx, cioc->readfd, false, io_read, NULL, NULL, opaque);
aio_set_fd_handler(ctx, cioc->writefd, false, NULL, io_write, NULL, opaque);
}
static GSource *qio_channel_command_create_watch(QIOChannel *ioc,
GIOCondition condition)
{
@ -349,6 +361,7 @@ static void qio_channel_command_class_init(ObjectClass *klass,
ioc_klass->io_set_blocking = qio_channel_command_set_blocking;
ioc_klass->io_close = qio_channel_command_close;
ioc_klass->io_create_watch = qio_channel_command_create_watch;
ioc_klass->io_set_aio_fd_handler = qio_channel_command_set_aio_fd_handler;
}
static const TypeInfo qio_channel_command_info = {

11
io/channel-file.c
View File

@ -186,6 +186,16 @@ static int qio_channel_file_close(QIOChannel *ioc,
}
static void qio_channel_file_set_aio_fd_handler(QIOChannel *ioc,
AioContext *ctx,
IOHandler *io_read,
IOHandler *io_write,
void *opaque)
{
QIOChannelFile *fioc = QIO_CHANNEL_FILE(ioc);
aio_set_fd_handler(ctx, fioc->fd, false, io_read, io_write, NULL, opaque);
}
static GSource *qio_channel_file_create_watch(QIOChannel *ioc,
GIOCondition condition)
{
@ -206,6 +216,7 @@ static void qio_channel_file_class_init(ObjectClass *klass,
ioc_klass->io_seek = qio_channel_file_seek;
ioc_klass->io_close = qio_channel_file_close;
ioc_klass->io_create_watch = qio_channel_file_create_watch;
ioc_klass->io_set_aio_fd_handler = qio_channel_file_set_aio_fd_handler;
}
static const TypeInfo qio_channel_file_info = {

16
io/channel-socket.c
View File

@ -649,11 +649,6 @@ qio_channel_socket_set_blocking(QIOChannel *ioc,
qemu_set_block(sioc->fd);
} else {
qemu_set_nonblock(sioc->fd);
#ifdef WIN32
WSAEventSelect(sioc->fd, ioc->event,
FD_READ | FD_ACCEPT | FD_CLOSE |
FD_CONNECT | FD_WRITE | FD_OOB);
#endif
}
return 0;
}
@ -733,6 +728,16 @@ qio_channel_socket_shutdown(QIOChannel *ioc,
return 0;
}
static void qio_channel_socket_set_aio_fd_handler(QIOChannel *ioc,
AioContext *ctx,
IOHandler *io_read,
IOHandler *io_write,
void *opaque)
{
QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(ioc);
aio_set_fd_handler(ctx, sioc->fd, false, io_read, io_write, NULL, opaque);
}
static GSource *qio_channel_socket_create_watch(QIOChannel *ioc,
GIOCondition condition)
{
@ -755,6 +760,7 @@ static void qio_channel_socket_class_init(ObjectClass *klass,
ioc_klass->io_set_cork = qio_channel_socket_set_cork;
ioc_klass->io_set_delay = qio_channel_socket_set_delay;
ioc_klass->io_create_watch = qio_channel_socket_create_watch;
ioc_klass->io_set_aio_fd_handler = qio_channel_socket_set_aio_fd_handler;
}
static const TypeInfo qio_channel_socket_info = {

12
io/channel-tls.c
View File

@ -345,6 +345,17 @@ static int qio_channel_tls_close(QIOChannel *ioc,
return qio_channel_close(tioc->master, errp);
}
static void qio_channel_tls_set_aio_fd_handler(QIOChannel *ioc,
AioContext *ctx,
IOHandler *io_read,
IOHandler *io_write,
void *opaque)
{
QIOChannelTLS *tioc = QIO_CHANNEL_TLS(ioc);
qio_channel_set_aio_fd_handler(tioc->master, ctx, io_read, io_write, opaque);
}
static GSource *qio_channel_tls_create_watch(QIOChannel *ioc,
GIOCondition condition)
{
@ -372,6 +383,7 @@ static void qio_channel_tls_class_init(ObjectClass *klass,
ioc_klass->io_close = qio_channel_tls_close;
ioc_klass->io_shutdown = qio_channel_tls_shutdown;
ioc_klass->io_create_watch = qio_channel_tls_create_watch;
ioc_klass->io_set_aio_fd_handler = qio_channel_tls_set_aio_fd_handler;
}
static const TypeInfo qio_channel_tls_info = {

6
io/channel-watch.c
View File

@ -285,6 +285,12 @@ GSource *qio_channel_create_socket_watch(QIOChannel *ioc,
GSource *source;
QIOChannelSocketSource *ssource;
#ifdef WIN32
WSAEventSelect(socket, ioc->event,
FD_READ | FD_ACCEPT | FD_CLOSE |
FD_CONNECT | FD_WRITE | FD_OOB);
#endif
source = g_source_new(&qio_channel_socket_source_funcs,
sizeof(QIOChannelSocketSource));
ssource = (QIOChannelSocketSource *)source;

11
io/channel.c
View File

@ -154,6 +154,17 @@ GSource *qio_channel_create_watch(QIOChannel *ioc,
}
void qio_channel_set_aio_fd_handler(QIOChannel *ioc,
AioContext *ctx,
IOHandler *io_read,
IOHandler *io_write,
void *opaque)
{
QIOChannelClass *klass = QIO_CHANNEL_GET_CLASS(ioc);
klass->io_set_aio_fd_handler(ioc, ctx, io_read, io_write, opaque);
}
guint qio_channel_add_watch(QIOChannel *ioc,
GIOCondition condition,
QIOChannelFunc func,