From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48283) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fAzpc-0008VT-Ur for qemu-devel@nongnu.org; Tue, 24 Apr 2018 11:26:14 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fAzpb-0000Kj-Kr for qemu-devel@nongnu.org; Tue, 24 Apr 2018 11:26:12 -0400 From: Kevin Wolf Date: Tue, 24 Apr 2018 17:25:14 +0200 Message-Id: <20180424152515.25664-33-kwolf@redhat.com> In-Reply-To: <20180424152515.25664-1-kwolf@redhat.com> References: <20180424152515.25664-1-kwolf@redhat.com> Subject: [Qemu-devel] [RFC PATCH 32/33] job: Add job_yield() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-block@nongnu.org Cc: kwolf@redhat.com, mreitz@redhat.com, jsnow@redhat.com, jcody@redhat.com, qemu-devel@nongnu.org This moves block_job_yield() to the Job layer. Signed-off-by: Kevin Wolf --- include/block/blockjob_int.h | 8 -------- include/qemu/job.h | 8 +++++++- block/backup.c | 2 +- block/mirror.c | 2 +- blockjob.c | 16 ---------------- job.c | 18 +++++++++++++++++- tests/test-blockjob-txn.c | 2 +- 7 files changed, 27 insertions(+), 29 deletions(-) diff --git a/include/block/blockjob_int.h b/include/block/blockjob_int.h index 2fdf35a9fd..3f49ba5472 100644 --- a/include/block/blockjob_int.h +++ b/include/block/blockjob_int.h @@ -108,14 +108,6 @@ void block_job_user_resume(Job *job); void block_job_drain(Job *job); /** - * block_job_yield: - * @job: The job that calls the function. - * - * Yield the block job coroutine. - */ -void block_job_yield(BlockJob *job); - -/** * block_job_ratelimit_get_delay: * * Calculate and return delay for the next request in ns. See the docuemntation diff --git a/include/qemu/job.h b/include/qemu/job.h index 9df0f5560b..1a4d6167e6 100644 --- a/include/qemu/job.h +++ b/include/qemu/job.h @@ -332,6 +332,13 @@ void coroutine_fn job_pause_point(Job *job); /** * @job: The job that calls the function. + * + * Yield the job coroutine. + */ +void job_yield(Job *job); + +/** + * @job: The job that calls the function. * @ns: How many nanoseconds to stop for. * * Put the job to sleep (assuming that it wasn't canceled) for @ns @@ -485,7 +492,6 @@ int job_finish_sync(Job *job, void (*finish)(Job *, Error **errp), Error **errp) /* TODO To be removed from the public interface */ void job_state_transition(Job *job, JobStatus s1); int job_apply_verb(Job *job, JobVerb bv, Error **errp); -void coroutine_fn job_do_yield(Job *job, uint64_t ns); bool job_should_pause(Job *job); bool job_started(Job *job); void job_enter_cond(Job *job, bool(*fn)(Job *job)); diff --git a/block/backup.c b/block/backup.c index ecc1e9164c..3436a87a8e 100644 --- a/block/backup.c +++ b/block/backup.c @@ -444,7 +444,7 @@ static void coroutine_fn backup_run(void *opaque) while (!job_is_cancelled(&job->common.job)) { /* Yield until the job is cancelled. We just let our before_write * notify callback service CoW requests. */ - block_job_yield(&job->common); + job_yield(&job->common.job); } } else if (job->sync_mode == MIRROR_SYNC_MODE_INCREMENTAL) { ret = backup_run_incremental(job); diff --git a/block/mirror.c b/block/mirror.c index b722a407e1..669aca227d 100644 --- a/block/mirror.c +++ b/block/mirror.c @@ -731,7 +731,7 @@ static void coroutine_fn mirror_run(void *opaque) block_job_event_ready(&s->common); s->synced = true; while (!job_is_cancelled(&s->common.job) && !s->should_complete) { - block_job_yield(&s->common); + job_yield(&s->common.job); } s->common.job.cancelled = false; goto immediate_exit; diff --git a/blockjob.c b/blockjob.c index 0cbe655c0e..6569624691 100644 --- a/blockjob.c +++ b/blockjob.c @@ -431,22 +431,6 @@ void *block_job_create(const char *job_id, const BlockJobDriver *driver, return job; } -void block_job_yield(BlockJob *job) -{ - assert(job->job.busy); - - /* Check cancellation *before* setting busy = false, too! */ - if (job_is_cancelled(&job->job)) { - return; - } - - if (!job_should_pause(&job->job)) { - job_do_yield(&job->job, -1); - } - - job_pause_point(&job->job); -} - void block_job_iostatus_reset(BlockJob *job) { if (job->iostatus == BLOCK_DEVICE_IO_STATUS_OK) { diff --git a/job.c b/job.c index 20c901f7a9..5bc98b9794 100644 --- a/job.c +++ b/job.c @@ -405,7 +405,7 @@ void job_enter(Job *job) * * If @ns is (uint64_t) -1, no timer is scheduled and block_job_enter() must be * called explicitly. */ -void coroutine_fn job_do_yield(Job *job, uint64_t ns) +static void coroutine_fn job_do_yield(Job *job, uint64_t ns) { job_lock(); if (ns != -1) { @@ -450,6 +450,22 @@ void coroutine_fn job_pause_point(Job *job) } } +void job_yield(Job *job) +{ + assert(job->busy); + + /* Check cancellation *before* setting busy = false, too! */ + if (job_is_cancelled(job)) { + return; + } + + if (!job_should_pause(job)) { + job_do_yield(job, -1); + } + + job_pause_point(job); +} + void coroutine_fn job_sleep_ns(Job *job, int64_t ns) { assert(job->busy); diff --git a/tests/test-blockjob-txn.c b/tests/test-blockjob-txn.c index 34ee179574..fce836639a 100644 --- a/tests/test-blockjob-txn.c +++ b/tests/test-blockjob-txn.c @@ -47,7 +47,7 @@ static void coroutine_fn test_block_job_run(void *opaque) if (s->use_timer) { job_sleep_ns(&job->job, 0); } else { - block_job_yield(job); + job_yield(&job->job); } if (job_is_cancelled(&job->job)) { -- 2.13.6