STREAM_BUFFER_SIZE = 512 * 1024, /* in bytes */
};
-#define SLICE_TIME 100000000ULL /* ns */
-
typedef struct StreamBlockJob {
BlockJob common;
- RateLimit limit;
BlockDriverState *base;
BlockdevOnError on_error;
char *backing_file_str;
return blk_co_preadv(blk, offset, qiov.size, &qiov, BDRV_REQ_COPY_ON_READ);
}
-typedef struct {
- int ret;
-} StreamCompleteData;
-
-static void stream_complete(BlockJob *job, void *opaque)
+static void stream_exit(Job *job)
{
- StreamBlockJob *s = container_of(job, StreamBlockJob, common);
- StreamCompleteData *data = opaque;
- BlockDriverState *bs = blk_bs(job->blk);
+ StreamBlockJob *s = container_of(job, StreamBlockJob, common.job);
+ BlockJob *bjob = &s->common;
+ BlockDriverState *bs = blk_bs(bjob->blk);
BlockDriverState *base = s->base;
Error *local_err = NULL;
+ int ret = job->ret;
- if (!block_job_is_cancelled(&s->common) && bs->backing &&
- data->ret == 0) {
+ if (!job_is_cancelled(job) && bs->backing && ret == 0) {
const char *base_id = NULL, *base_fmt = NULL;
if (base) {
base_id = s->backing_file_str;
base_fmt = base->drv->format_name;
}
}
- data->ret = bdrv_change_backing_file(bs, base_id, base_fmt);
+ ret = bdrv_change_backing_file(bs, base_id, base_fmt);
bdrv_set_backing_hd(bs, base, &local_err);
if (local_err) {
error_report_err(local_err);
- data->ret = -EPERM;
+ ret = -EPERM;
goto out;
}
}
/* Reopen the image back in read-only mode if necessary */
if (s->bs_flags != bdrv_get_flags(bs)) {
/* Give up write permissions before making it read-only */
- blk_set_perm(job->blk, 0, BLK_PERM_ALL, &error_abort);
+ blk_set_perm(bjob->blk, 0, BLK_PERM_ALL, &error_abort);
bdrv_reopen(bs, s->bs_flags, NULL);
}
g_free(s->backing_file_str);
- block_job_completed(&s->common, data->ret);
- g_free(data);
+ job->ret = ret;
}
-static void coroutine_fn stream_run(void *opaque)
+static int coroutine_fn stream_run(Job *job, Error **errp)
{
- StreamBlockJob *s = opaque;
- StreamCompleteData *data;
+ StreamBlockJob *s = container_of(job, StreamBlockJob, common.job);
BlockBackend *blk = s->common.blk;
BlockDriverState *bs = blk_bs(blk);
BlockDriverState *base = s->base;
+ int64_t len;
int64_t offset = 0;
uint64_t delay_ns = 0;
int error = 0;
goto out;
}
- s->common.len = bdrv_getlength(bs);
- if (s->common.len < 0) {
- ret = s->common.len;
+ len = bdrv_getlength(bs);
+ if (len < 0) {
+ ret = len;
goto out;
}
+ job_progress_set_remaining(&s->common.job, len);
buf = qemu_blockalign(bs, STREAM_BUFFER_SIZE);
bdrv_enable_copy_on_read(bs);
}
- for ( ; offset < s->common.len; offset += n) {
+ for ( ; offset < len; offset += n) {
bool copy;
/* Note that even when no rate limit is applied we need to yield
* with no pending I/O here so that bdrv_drain_all() returns.
*/
- block_job_sleep_ns(&s->common, delay_ns);
- if (block_job_is_cancelled(&s->common)) {
+ job_sleep_ns(&s->common.job, delay_ns);
+ if (job_is_cancelled(&s->common.job)) {
break;
}
/* Finish early if end of backing file has been reached */
if (ret == 0 && n == 0) {
- n = s->common.len - offset;
+ n = len - offset;
}
copy = (ret == 1);
ret = 0;
/* Publish progress */
- s->common.offset += n;
- if (copy && s->common.speed) {
- delay_ns = ratelimit_calculate_delay(&s->limit, n);
+ job_progress_update(&s->common.job, n);
+ if (copy) {
+ delay_ns = block_job_ratelimit_get_delay(&s->common, n);
+ } else {
+ delay_ns = 0;
}
}
out:
/* Modify backing chain and close BDSes in main loop */
- data = g_malloc(sizeof(*data));
- data->ret = ret;
- block_job_defer_to_main_loop(&s->common, stream_complete, data);
-}
-
-static void stream_set_speed(BlockJob *job, int64_t speed, Error **errp)
-{
- StreamBlockJob *s = container_of(job, StreamBlockJob, common);
-
- if (speed < 0) {
- error_setg(errp, QERR_INVALID_PARAMETER, "speed");
- return;
- }
- ratelimit_set_speed(&s->limit, speed, SLICE_TIME);
+ return ret;
}
static const BlockJobDriver stream_job_driver = {
- .instance_size = sizeof(StreamBlockJob),
- .job_type = BLOCK_JOB_TYPE_STREAM,
- .set_speed = stream_set_speed,
- .start = stream_run,
+ .job_driver = {
+ .instance_size = sizeof(StreamBlockJob),
+ .job_type = JOB_TYPE_STREAM,
+ .free = block_job_free,
+ .run = stream_run,
+ .exit = stream_exit,
+ .user_resume = block_job_user_resume,
+ .drain = block_job_drain,
+ },
};
void stream_start(const char *job_id, BlockDriverState *bs,
/* Prevent concurrent jobs trying to modify the graph structure here, we
* already have our own plans. Also don't allow resize as the image size is
* queried only at the job start and then cached. */
- s = block_job_create(job_id, &stream_job_driver, bs,
+ s = block_job_create(job_id, &stream_job_driver, NULL, bs,
BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE_UNCHANGED |
BLK_PERM_GRAPH_MOD,
BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE_UNCHANGED |
BLK_PERM_WRITE,
- speed, BLOCK_JOB_DEFAULT, NULL, NULL, errp);
+ speed, JOB_DEFAULT, NULL, NULL, errp);
if (!s) {
goto fail;
}
s->on_error = on_error;
trace_stream_start(bs, base, s);
- block_job_start(&s->common);
+ job_start(&s->common.job);
return;
fail:
projects / qemu.git / blobdiff