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authorPaolo Bonzini <pbonzini@redhat.com>2016-10-27 12:48:59 +0200
committerFam Zheng <famz@redhat.com>2016-10-28 21:50:18 +0800
commite437016511edb0dfa13cc98587c39590eaa2609a (patch)
treeacf1b17ca024a06b3f7d7c2fde5f2a56fcdace47 /iothread.c
parentf11672dbc0207cfb0015a2d08e7693b957847cbe (diff)
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aio: introduce qemu_get_current_aio_context
This will be used by BDRV_POLL_WHILE (and thus by bdrv_drain) to choose how to wait for I/O completion. Reviewed-by: Fam Zheng <famz@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <1477565348-5458-12-git-send-email-pbonzini@redhat.com> Signed-off-by: Fam Zheng <famz@redhat.com>
Diffstat (limited to 'iothread.c')
-rw-r--r--iothread.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/iothread.c b/iothread.c
index fbeb8de..62c8796 100644
--- a/iothread.c
+++ b/iothread.c
@@ -20,6 +20,7 @@
#include "qmp-commands.h"
#include "qemu/error-report.h"
#include "qemu/rcu.h"
+#include "qemu/main-loop.h"
typedef ObjectClass IOThreadClass;
@@ -28,6 +29,13 @@ typedef ObjectClass IOThreadClass;
#define IOTHREAD_CLASS(klass) \
OBJECT_CLASS_CHECK(IOThreadClass, klass, TYPE_IOTHREAD)
+static __thread IOThread *my_iothread;
+
+AioContext *qemu_get_current_aio_context(void)
+{
+ return my_iothread ? my_iothread->ctx : qemu_get_aio_context();
+}
+
static void *iothread_run(void *opaque)
{
IOThread *iothread = opaque;
@@ -35,6 +43,7 @@ static void *iothread_run(void *opaque)
rcu_register_thread();
+ my_iothread = iothread;
qemu_mutex_lock(&iothread->init_done_lock);
iothread->thread_id = qemu_get_thread_id();
qemu_cond_signal(&iothread->init_done_cond);