Commit df281b80 authored by Pavel Dovgalyuk's avatar Pavel Dovgalyuk Committed by Paolo Bonzini
Browse files

bottom halves: introduce bh call function 



This patch introduces aio_bh_call function. It is used to execute
bottom halves as callbacks without adding them to the queue.

Signed-off-by: default avatarPavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20150917162450.8676.56980.stgit@PASHA-ISP.def.inno>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: default avatarPavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
parent 8bd7f71d

async.c

+6 −1
Original line number Diff line number Diff line
@@ -59,6 +59,11 @@ QEMUBH *aio_bh_new(AioContext *ctx, QEMUBHFunc *cb, void *opaque) 
    return bh;

}



void aio_bh_call(QEMUBH *bh)

{

    bh->cb(bh->opaque);

}



/* Multiple occurrences of aio_bh_poll cannot be called concurrently */

int aio_bh_poll(AioContext *ctx)

{
@@ -84,7 +89,7 @@ int aio_bh_poll(AioContext *ctx) 
                ret = 1;

            }

            bh->idle = 0;

            bh->cb(bh->opaque);

            aio_bh_call(bh);

        }

    }

include/block/aio.h

+5 −0
Original line number Diff line number Diff line
@@ -208,6 +208,11 @@ void aio_notify(AioContext *ctx); 
 */

void aio_notify_accept(AioContext *ctx);



/**

 * aio_bh_call: Executes callback function of the specified BH.

 */

void aio_bh_call(QEMUBH *bh);



/**

 * aio_bh_poll: Poll bottom halves for an AioContext.

 *