motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-04 00:03:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

progressmeter: protect with a mutex

Browse source 
Progressmeter is protected by the AioContext mutex, which
is taken by the block jobs and their caller (like blockdev).

We would like to remove the dependency of block layer code on the
AioContext mutex, since most drivers and the core I/O code are already
not relying on it.

Create a new C file to implement the ProgressMeter API, but keep the
struct as public, to avoid forcing allocation on the heap.

Also add a mutex to be able to provide an accurate snapshot of the
progress values to the caller.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20210614081130.22134-5-eesposit@redhat.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
This commit is contained in:
Emanuele Giuseppe Esposito 2021-06-14 10:11:29 +02:00 • committed by Vladimir Sementsov-Ogievskiy
parent c02b83ed1f
commit a7b4f8fc09
7 changed files with 122 additions and 26 deletions
Download patch file Download diff file Expand all files Collapse all files

9
qemu-img.c
View file

@ -900,6 +900,7 @@ static void common_block_job_cb(void *opaque, int ret)
static void run_block_job(BlockJob *job, Error **errp)
{
uint64_t progress_current, progress_total;
AioContext *aio_context = blk_get_aio_context(job->blk);
int ret = 0;
@ -908,9 +909,11 @@ static void run_block_job(BlockJob *job, Error **errp)
do {
float progress = 0.0f;
aio_poll(aio_context, true);
if (job->job.progress.total) {
progress = (float)job->job.progress.current /
job->job.progress.total * 100.f;
progress_get_snapshot(&job->job.progress, &progress_current,
&progress_total);
if (progress_total) {
progress = (float)progress_current / progress_total * 100.f;
}
qemu_progress_print(progress, 0);
} while (!job_is_ready(&job->job) && !job_is_completed(&job->job));