133e9e9bdSKevin Wolf /* 233e9e9bdSKevin Wolf * Background jobs (long-running operations) 333e9e9bdSKevin Wolf * 433e9e9bdSKevin Wolf * Copyright (c) 2011 IBM Corp. 533e9e9bdSKevin Wolf * Copyright (c) 2012, 2018 Red Hat, Inc. 633e9e9bdSKevin Wolf * 733e9e9bdSKevin Wolf * Permission is hereby granted, free of charge, to any person obtaining a copy 833e9e9bdSKevin Wolf * of this software and associated documentation files (the "Software"), to deal 933e9e9bdSKevin Wolf * in the Software without restriction, including without limitation the rights 1033e9e9bdSKevin Wolf * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 1133e9e9bdSKevin Wolf * copies of the Software, and to permit persons to whom the Software is 1233e9e9bdSKevin Wolf * furnished to do so, subject to the following conditions: 1333e9e9bdSKevin Wolf * 1433e9e9bdSKevin Wolf * The above copyright notice and this permission notice shall be included in 1533e9e9bdSKevin Wolf * all copies or substantial portions of the Software. 1633e9e9bdSKevin Wolf * 1733e9e9bdSKevin Wolf * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 1833e9e9bdSKevin Wolf * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 1933e9e9bdSKevin Wolf * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 2033e9e9bdSKevin Wolf * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 2133e9e9bdSKevin Wolf * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 2233e9e9bdSKevin Wolf * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 2333e9e9bdSKevin Wolf * THE SOFTWARE. 2433e9e9bdSKevin Wolf */ 2533e9e9bdSKevin Wolf 2633e9e9bdSKevin Wolf #include "qemu/osdep.h" 2733e9e9bdSKevin Wolf #include "qemu-common.h" 2833e9e9bdSKevin Wolf #include "qapi/error.h" 2933e9e9bdSKevin Wolf #include "qemu/job.h" 3033e9e9bdSKevin Wolf #include "qemu/id.h" 3133e9e9bdSKevin Wolf 32*e7c1d78bSKevin Wolf static QLIST_HEAD(, Job) jobs = QLIST_HEAD_INITIALIZER(jobs); 33*e7c1d78bSKevin Wolf 34252291eaSKevin Wolf JobType job_type(const Job *job) 35252291eaSKevin Wolf { 36252291eaSKevin Wolf return job->driver->job_type; 37252291eaSKevin Wolf } 38252291eaSKevin Wolf 39252291eaSKevin Wolf const char *job_type_str(const Job *job) 40252291eaSKevin Wolf { 41252291eaSKevin Wolf return JobType_str(job_type(job)); 42252291eaSKevin Wolf } 43252291eaSKevin Wolf 44*e7c1d78bSKevin Wolf Job *job_next(Job *job) 45*e7c1d78bSKevin Wolf { 46*e7c1d78bSKevin Wolf if (!job) { 47*e7c1d78bSKevin Wolf return QLIST_FIRST(&jobs); 48*e7c1d78bSKevin Wolf } 49*e7c1d78bSKevin Wolf return QLIST_NEXT(job, job_list); 50*e7c1d78bSKevin Wolf } 51*e7c1d78bSKevin Wolf 52*e7c1d78bSKevin Wolf Job *job_get(const char *id) 53*e7c1d78bSKevin Wolf { 54*e7c1d78bSKevin Wolf Job *job; 55*e7c1d78bSKevin Wolf 56*e7c1d78bSKevin Wolf QLIST_FOREACH(job, &jobs, job_list) { 57*e7c1d78bSKevin Wolf if (job->id && !strcmp(id, job->id)) { 58*e7c1d78bSKevin Wolf return job; 59*e7c1d78bSKevin Wolf } 60*e7c1d78bSKevin Wolf } 61*e7c1d78bSKevin Wolf 62*e7c1d78bSKevin Wolf return NULL; 63*e7c1d78bSKevin Wolf } 64*e7c1d78bSKevin Wolf 6533e9e9bdSKevin Wolf void *job_create(const char *job_id, const JobDriver *driver, Error **errp) 6633e9e9bdSKevin Wolf { 6733e9e9bdSKevin Wolf Job *job; 6833e9e9bdSKevin Wolf 6933e9e9bdSKevin Wolf if (job_id) { 7033e9e9bdSKevin Wolf if (!id_wellformed(job_id)) { 7133e9e9bdSKevin Wolf error_setg(errp, "Invalid job ID '%s'", job_id); 7233e9e9bdSKevin Wolf return NULL; 7333e9e9bdSKevin Wolf } 74*e7c1d78bSKevin Wolf if (job_get(job_id)) { 75*e7c1d78bSKevin Wolf error_setg(errp, "Job ID '%s' already in use", job_id); 76*e7c1d78bSKevin Wolf return NULL; 77*e7c1d78bSKevin Wolf } 7833e9e9bdSKevin Wolf } 7933e9e9bdSKevin Wolf 8033e9e9bdSKevin Wolf job = g_malloc0(driver->instance_size); 8133e9e9bdSKevin Wolf job->driver = driver; 8233e9e9bdSKevin Wolf job->id = g_strdup(job_id); 8333e9e9bdSKevin Wolf 84*e7c1d78bSKevin Wolf QLIST_INSERT_HEAD(&jobs, job, job_list); 85*e7c1d78bSKevin Wolf 8633e9e9bdSKevin Wolf return job; 8733e9e9bdSKevin Wolf } 88fd61a701SKevin Wolf 89fd61a701SKevin Wolf void job_delete(Job *job) 90fd61a701SKevin Wolf { 91*e7c1d78bSKevin Wolf QLIST_REMOVE(job, job_list); 92*e7c1d78bSKevin Wolf 93fd61a701SKevin Wolf g_free(job->id); 94fd61a701SKevin Wolf g_free(job); 95fd61a701SKevin Wolf } 96