diff options
Diffstat (limited to 'block.c')
-rw-r--r-- | block.c | 128 |
1 files changed, 1 insertions, 127 deletions
@@ -26,6 +26,7 @@ #include "trace.h" #include "monitor.h" #include "block_int.h" +#include "blockjob.h" #include "module.h" #include "qjson.h" #include "qemu-coroutine.h" @@ -4406,130 +4407,3 @@ out: return ret; } - -void *block_job_create(const BlockJobType *job_type, BlockDriverState *bs, - int64_t speed, BlockDriverCompletionFunc *cb, - void *opaque, Error **errp) -{ - BlockJob *job; - - if (bs->job || bdrv_in_use(bs)) { - error_set(errp, QERR_DEVICE_IN_USE, bdrv_get_device_name(bs)); - return NULL; - } - bdrv_set_in_use(bs, 1); - - job = g_malloc0(job_type->instance_size); - job->job_type = job_type; - job->bs = bs; - job->cb = cb; - job->opaque = opaque; - job->busy = true; - bs->job = job; - - /* Only set speed when necessary to avoid NotSupported error */ - if (speed != 0) { - Error *local_err = NULL; - - block_job_set_speed(job, speed, &local_err); - if (error_is_set(&local_err)) { - bs->job = NULL; - g_free(job); - bdrv_set_in_use(bs, 0); - error_propagate(errp, local_err); - return NULL; - } - } - return job; -} - -void block_job_complete(BlockJob *job, int ret) -{ - BlockDriverState *bs = job->bs; - - assert(bs->job == job); - job->cb(job->opaque, ret); - bs->job = NULL; - g_free(job); - bdrv_set_in_use(bs, 0); -} - -void block_job_set_speed(BlockJob *job, int64_t speed, Error **errp) -{ - Error *local_err = NULL; - - if (!job->job_type->set_speed) { - error_set(errp, QERR_NOT_SUPPORTED); - return; - } - job->job_type->set_speed(job, speed, &local_err); - if (error_is_set(&local_err)) { - error_propagate(errp, local_err); - return; - } - - job->speed = speed; -} - -void block_job_cancel(BlockJob *job) -{ - job->cancelled = true; - if (job->co && !job->busy) { - qemu_coroutine_enter(job->co, NULL); - } -} - -bool block_job_is_cancelled(BlockJob *job) -{ - return job->cancelled; -} - -struct BlockCancelData { - BlockJob *job; - BlockDriverCompletionFunc *cb; - void *opaque; - bool cancelled; - int ret; -}; - -static void block_job_cancel_cb(void *opaque, int ret) -{ - struct BlockCancelData *data = opaque; - - data->cancelled = block_job_is_cancelled(data->job); - data->ret = ret; - data->cb(data->opaque, ret); -} - -int block_job_cancel_sync(BlockJob *job) -{ - struct BlockCancelData data; - BlockDriverState *bs = job->bs; - - assert(bs->job == job); - - /* Set up our own callback to store the result and chain to - * the original callback. - */ - data.job = job; - data.cb = job->cb; - data.opaque = job->opaque; - data.ret = -EINPROGRESS; - job->cb = block_job_cancel_cb; - job->opaque = &data; - block_job_cancel(job); - while (data.ret == -EINPROGRESS) { - qemu_aio_wait(); - } - return (data.cancelled && data.ret == 0) ? -ECANCELED : data.ret; -} - -void block_job_sleep_ns(BlockJob *job, QEMUClock *clock, int64_t ns) -{ - /* Check cancellation *before* setting busy = false, too! */ - if (!block_job_is_cancelled(job)) { - job->busy = false; - co_sleep_ns(clock, ns); - job->busy = true; - } -} |