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tools: Use real async.c instead of stubs 

It's wrong to call BHs directly, even in tools. The only operations that
schedule BHs are called in a loop that (indirectly) contains a call to
qemu_bh_poll anyway, so we're not losing the scheduled BHs: Tools either use
synchronous functions, which are guaranteed to have completed (including any
BHs) when they return; or if they use asynchronous functions, they need to call
qemu_aio_wait() or similar functions already today.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
This commit is contained in:
Kevin Wolf 2011-02-22 18:42:31 +01:00
parent e11480db7f
commit 4e59b54586
2 changed files with 6 additions and 45 deletions
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4
Makefile.objs
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@ -13,7 +13,7 @@ oslib-obj-$(CONFIG_POSIX) += oslib-posix.o
#######################################################################
# block-obj-y is code used by both qemu system emulation and qemu-img
block-obj-y = cutils.o cache-utils.o qemu-malloc.o qemu-option.o module.o
block-obj-y = cutils.o cache-utils.o qemu-malloc.o qemu-option.o module.o async.o
block-obj-y += nbd.o block.o aio.o aes.o qemu-config.o
block-obj-$(CONFIG_POSIX) += posix-aio-compat.o
block-obj-$(CONFIG_LINUX_AIO) += linux-aio.o
@ -63,7 +63,7 @@ common-obj-y = $(block-obj-y) blockdev.o
common-obj-y += $(net-obj-y)
common-obj-y += $(qobject-obj-y)
common-obj-$(CONFIG_LINUX) += $(fsdev-obj-$(CONFIG_LINUX))
common-obj-y += readline.o console.o cursor.o async.o qemu-error.o
common-obj-y += readline.o console.o cursor.o qemu-error.o
common-obj-y += $(oslib-obj-y)
common-obj-$(CONFIG_WIN32) += os-win32.o
common-obj-$(CONFIG_POSIX) += os-posix.o

47
qemu-tool.c
View File

@ -56,53 +56,10 @@ void monitor_print_filename(Monitor *mon, const char *filename)
{
}
void async_context_push(void)
{
}
void async_context_pop(void)
{
}
int get_async_context_id(void)
{
return 0;
}
void monitor_protocol_event(MonitorEvent event, QObject *data)
{
}
QEMUBH *qemu_bh_new(QEMUBHFunc *cb, void *opaque)
{
QEMUBH *bh;
bh = qemu_malloc(sizeof(*bh));
bh->cb = cb;
bh->opaque = opaque;
return bh;
}
int qemu_bh_poll(void)
{
return 0;
}
void qemu_bh_schedule(QEMUBH *bh)
{
bh->cb(bh->opaque);
}
void qemu_bh_cancel(QEMUBH *bh)
{
}
void qemu_bh_delete(QEMUBH *bh)
{
qemu_free(bh);
}
int qemu_set_fd_handler2(int fd,
IOCanReadHandler *fd_read_poll,
IOHandler *fd_read,
@ -111,3 +68,7 @@ int qemu_set_fd_handler2(int fd,
{
return 0;
}
void qemu_notify_event(void)
{
}