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job.h: split function pointers in JobDriver 

The job API will be handled separately in another serie.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Message-Id: <20220303151616.325444-31-eesposit@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Emanuele Giuseppe Esposito 2022-03-03 10:16:15 -05:00 committed by Kevin Wolf
parent dc2b15ba08
commit 32498092c4
1 changed files with 22 additions and 0 deletions
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22
include/qemu/job.h
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@ -169,6 +169,12 @@ typedef struct Job {
* Callbacks and other information about a Job driver.
*/
struct JobDriver {
/*
* These fields are initialized when this object is created,
* and are never changed afterwards
*/
/** Derived Job struct size */
size_t instance_size;
@ -184,9 +190,18 @@ struct JobDriver {
* aborted. If it returns zero, the job moves into the WAITING state. If it
* is the last job to complete in its transaction, all jobs in the
* transaction move from WAITING to PENDING.
*
* This callback must be run in the job's context.
*/
int coroutine_fn (*run)(Job *job, Error **errp);
/*
* Functions run without regard to the BQL that may run in any
* arbitrary thread. These functions do not need to be thread-safe
* because the caller ensures that they are invoked from one
* thread at time.
*/
/**
* If the callback is not NULL, it will be invoked when the job transitions
* into the paused state. Paused jobs must not perform any asynchronous
@ -201,6 +216,13 @@ struct JobDriver {
*/
void coroutine_fn (*resume)(Job *job);
/*
* Global state (GS) API. These functions run under the BQL.
*
* See include/block/block-global-state.h for more information about
* the GS API.
*/
/**
* Called when the job is resumed by the user (i.e. user_paused becomes
* false). .user_resume is called before .resume.