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c3033fd372
The easiest spots to use QAPI_LIST_APPEND are where we already have an obvious pointer to the tail of a list. While at it, consistently use the variable name 'tail' for that purpose. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20210113221013.390592-5-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
190 lines
4.7 KiB
C
190 lines
4.7 KiB
C
/*
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* QMP interface for background jobs
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*
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* Copyright (c) 2011 IBM Corp.
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* Copyright (c) 2012, 2018 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "qemu/job.h"
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#include "qapi/qapi-commands-job.h"
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#include "qapi/error.h"
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#include "trace/trace-root.h"
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/* Get a job using its ID and acquire its AioContext */
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static Job *find_job(const char *id, AioContext **aio_context, Error **errp)
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{
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Job *job;
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*aio_context = NULL;
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job = job_get(id);
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if (!job) {
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error_setg(errp, "Job not found");
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return NULL;
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}
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*aio_context = job->aio_context;
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aio_context_acquire(*aio_context);
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return job;
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}
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void qmp_job_cancel(const char *id, Error **errp)
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{
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AioContext *aio_context;
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Job *job = find_job(id, &aio_context, errp);
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if (!job) {
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return;
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}
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trace_qmp_job_cancel(job);
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job_user_cancel(job, true, errp);
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aio_context_release(aio_context);
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}
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void qmp_job_pause(const char *id, Error **errp)
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{
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AioContext *aio_context;
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Job *job = find_job(id, &aio_context, errp);
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if (!job) {
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return;
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}
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trace_qmp_job_pause(job);
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job_user_pause(job, errp);
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aio_context_release(aio_context);
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}
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void qmp_job_resume(const char *id, Error **errp)
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{
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AioContext *aio_context;
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Job *job = find_job(id, &aio_context, errp);
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if (!job) {
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return;
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}
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trace_qmp_job_resume(job);
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job_user_resume(job, errp);
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aio_context_release(aio_context);
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}
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void qmp_job_complete(const char *id, Error **errp)
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{
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AioContext *aio_context;
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Job *job = find_job(id, &aio_context, errp);
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if (!job) {
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return;
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}
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trace_qmp_job_complete(job);
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job_complete(job, errp);
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aio_context_release(aio_context);
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}
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void qmp_job_finalize(const char *id, Error **errp)
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{
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AioContext *aio_context;
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Job *job = find_job(id, &aio_context, errp);
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if (!job) {
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return;
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}
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trace_qmp_job_finalize(job);
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job_ref(job);
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job_finalize(job, errp);
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/*
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* Job's context might have changed via job_finalize (and job_txn_apply
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* automatically acquires the new one), so make sure we release the correct
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* one.
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*/
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aio_context = job->aio_context;
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job_unref(job);
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aio_context_release(aio_context);
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}
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void qmp_job_dismiss(const char *id, Error **errp)
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{
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AioContext *aio_context;
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Job *job = find_job(id, &aio_context, errp);
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if (!job) {
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return;
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}
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trace_qmp_job_dismiss(job);
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job_dismiss(&job, errp);
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aio_context_release(aio_context);
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}
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static JobInfo *job_query_single(Job *job, Error **errp)
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{
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JobInfo *info;
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assert(!job_is_internal(job));
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info = g_new(JobInfo, 1);
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*info = (JobInfo) {
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.id = g_strdup(job->id),
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.type = job_type(job),
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.status = job->status,
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.current_progress = job->progress.current,
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.total_progress = job->progress.total,
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.has_error = !!job->err,
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.error = job->err ? \
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g_strdup(error_get_pretty(job->err)) : NULL,
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};
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return info;
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}
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JobInfoList *qmp_query_jobs(Error **errp)
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{
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JobInfoList *head = NULL, **tail = &head;
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Job *job;
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for (job = job_next(NULL); job; job = job_next(job)) {
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JobInfo *value;
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AioContext *aio_context;
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if (job_is_internal(job)) {
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continue;
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}
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aio_context = job->aio_context;
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aio_context_acquire(aio_context);
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value = job_query_single(job, errp);
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aio_context_release(aio_context);
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if (!value) {
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qapi_free_JobInfoList(head);
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return NULL;
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}
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QAPI_LIST_APPEND(tail, value);
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}
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return head;
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}
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