1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
7 This file is part of systemd.
9 Copyright 2010 Lennart Poettering
11 systemd is free software; you can redistribute it and/or modify it
12 under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 systemd is distributed in the hope that it will be useful, but
17 WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with systemd; If not, see <http://www.gnu.org/licenses/>.
29 typedef struct Job Job;
30 typedef struct JobDependency JobDependency;
31 typedef enum JobType JobType;
32 typedef enum JobState JobState;
33 typedef enum JobMode JobMode;
34 typedef enum JobResult JobResult;
41 /* Be careful when changing the job types! Adjust job_merging_table[] accordingly! */
43 JOB_START, /* if a unit does not support being started, we'll just wait until it becomes active */
48 JOB_RELOAD, /* if running reload */
49 JOB_RELOAD_OR_START, /* if running reload, if not running start */
51 /* Note that restarts are first treated like JOB_STOP, but
52 * then instead of finishing are patched to become
54 JOB_RESTART, /* if running stop, then start unconditionally */
55 JOB_TRY_RESTART, /* if running stop and then start */
58 _JOB_TYPE_INVALID = -1
65 _JOB_STATE_INVALID = -1
69 JOB_FAIL, /* Fail if a conflicting job is already queued */
70 JOB_REPLACE, /* Replace an existing conflicting job */
71 JOB_ISOLATE, /* Start a unit, and stop all others */
72 JOB_IGNORE_DEPENDENCIES, /* Ignore both requirement and ordering dependencies */
73 JOB_IGNORE_REQUIREMENTS, /* Ignore requirement dependencies */
75 _JOB_MODE_INVALID = -1
86 _JOB_RESULT_INVALID = -1
89 struct JobDependency {
90 /* Encodes that the 'subject' job needs the 'object' job in
91 * some way. This structure is used only while building a transaction. */
95 LIST_FIELDS(JobDependency, subject);
96 LIST_FIELDS(JobDependency, object);
106 LIST_FIELDS(Job, transaction);
107 LIST_FIELDS(Job, run_queue);
108 LIST_FIELDS(Job, dbus_queue);
110 LIST_HEAD(JobDependency, subject_list);
111 LIST_HEAD(JobDependency, object_list);
113 /* Used for graph algs as a "I have been here" marker */
124 /* Note that this bus object is not ref counted here. */
132 bool matters_to_anchor:1;
134 bool in_dbus_queue:1;
135 bool sent_dbus_new_signal:1;
139 Job* job_new(Manager *m, JobType type, Unit *unit);
140 void job_free(Job *job);
141 void job_dump(Job *j, FILE*f, const char *prefix);
143 JobDependency* job_dependency_new(Job *subject, Job *object, bool matters, bool conflicts);
144 void job_dependency_free(JobDependency *l);
146 bool job_is_anchor(Job *j);
148 int job_merge(Job *j, Job *other);
150 JobType job_type_lookup_merge(JobType a, JobType b);
152 static inline int job_type_merge(JobType *a, JobType b) {
153 JobType t = job_type_lookup_merge(*a, b);
160 static inline bool job_type_is_mergeable(JobType a, JobType b) {
161 return job_type_lookup_merge(a, b) >= 0;
164 static inline bool job_type_is_conflicting(JobType a, JobType b) {
165 return !job_type_is_mergeable(a, b);
168 static inline bool job_type_is_superset(JobType a, JobType b) {
169 /* Checks whether operation a is a "superset" of b in its actions */
170 return a == job_type_lookup_merge(a, b);
173 bool job_type_is_redundant(JobType a, UnitActiveState b);
175 bool job_is_runnable(Job *j);
177 void job_add_to_run_queue(Job *j);
178 void job_add_to_dbus_queue(Job *j);
180 int job_start_timer(Job *j);
181 void job_timer_event(Job *j, uint64_t n_elapsed, Watch *w);
183 int job_run_and_invalidate(Job *j);
184 int job_finish_and_invalidate(Job *j, JobResult result);
186 char *job_dbus_path(Job *j);
188 const char* job_type_to_string(JobType t);
189 JobType job_type_from_string(const char *s);
191 const char* job_state_to_string(JobState t);
192 JobState job_state_from_string(const char *s);
194 const char* job_mode_to_string(JobMode t);
195 JobMode job_mode_from_string(const char *s);
197 const char* job_result_to_string(JobResult t);
198 JobResult job_result_from_string(const char *s);