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Diffstat (limited to 'src/core/job.h')
| -rw-r--r-- | src/core/job.h | 237 |
1 files changed, 0 insertions, 237 deletions
diff --git a/src/core/job.h b/src/core/job.h deleted file mode 100644 index 9119e4834a..0000000000 --- a/src/core/job.h +++ /dev/null @@ -1,237 +0,0 @@ -/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ - -#pragma once - -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <stdbool.h> - -typedef struct Job Job; -typedef struct JobDependency JobDependency; -typedef enum JobType JobType; -typedef enum JobState JobState; -typedef enum JobMode JobMode; -typedef enum JobResult JobResult; - -/* Be careful when changing the job types! Adjust job_merging_table[] accordingly! */ -enum JobType { - JOB_START, /* if a unit does not support being started, we'll just wait until it becomes active */ - JOB_VERIFY_ACTIVE, - - JOB_STOP, - - JOB_RELOAD, /* if running, reload */ - - /* Note that restarts are first treated like JOB_STOP, but - * then instead of finishing are patched to become - * JOB_START. */ - JOB_RESTART, /* If running, stop. Then start unconditionally. */ - - _JOB_TYPE_MAX_MERGING, - - /* JOB_NOP can enter into a transaction, but as it won't pull in - * any dependencies and it uses the special 'nop_job' slot in Unit, - * it won't have to merge with anything (except possibly into another - * JOB_NOP, previously installed). JOB_NOP is special-cased in - * job_type_is_*() functions so that the transaction can be - * activated. */ - JOB_NOP = _JOB_TYPE_MAX_MERGING, /* do nothing */ - - _JOB_TYPE_MAX_IN_TRANSACTION, - - /* JOB_TRY_RESTART can never appear in a transaction, because - * it always collapses into JOB_RESTART or JOB_NOP before entering. - * Thus we never need to merge it with anything. */ - JOB_TRY_RESTART = _JOB_TYPE_MAX_IN_TRANSACTION, /* if running, stop and then start */ - - /* JOB_RELOAD_OR_START won't enter into a transaction and cannot result - * from transaction merging (there's no way for JOB_RELOAD and - * JOB_START to meet in one transaction). It can result from a merge - * during job installation, but then it will immediately collapse into - * one of the two simpler types. */ - JOB_RELOAD_OR_START, /* if running, reload, otherwise start */ - - _JOB_TYPE_MAX, - _JOB_TYPE_INVALID = -1 -}; - -enum JobState { - JOB_WAITING, - JOB_RUNNING, - _JOB_STATE_MAX, - _JOB_STATE_INVALID = -1 -}; - -enum JobMode { - JOB_FAIL, /* Fail if a conflicting job is already queued */ - JOB_REPLACE, /* Replace an existing conflicting job */ - JOB_REPLACE_IRREVERSIBLY,/* Like JOB_REPLACE + produce irreversible jobs */ - JOB_ISOLATE, /* Start a unit, and stop all others */ - JOB_FLUSH, /* Flush out all other queued jobs when queing this one */ - JOB_IGNORE_DEPENDENCIES, /* Ignore both requirement and ordering dependencies */ - JOB_IGNORE_REQUIREMENTS, /* Ignore requirement dependencies */ - _JOB_MODE_MAX, - _JOB_MODE_INVALID = -1 -}; - -enum JobResult { - JOB_DONE, /* Job completed successfully */ - JOB_CANCELED, /* Job canceled by a conflicting job installation or by explicit cancel request */ - JOB_TIMEOUT, /* Job timeout elapsed */ - JOB_FAILED, /* Job failed */ - JOB_DEPENDENCY, /* A required dependency job did not result in JOB_DONE */ - JOB_SKIPPED, /* Negative result of JOB_VERIFY_ACTIVE */ - JOB_INVALID, /* JOB_RELOAD of inactive unit */ - JOB_ASSERT, /* Couldn't start a unit, because an assert didn't hold */ - JOB_UNSUPPORTED, /* Couldn't start a unit, because the unit type is not supported on the system */ - _JOB_RESULT_MAX, - _JOB_RESULT_INVALID = -1 -}; - -#include "sd-event.h" -#include "unit.h" -#include "list.h" - -struct JobDependency { - /* Encodes that the 'subject' job needs the 'object' job in - * some way. This structure is used only while building a transaction. */ - Job *subject; - Job *object; - - LIST_FIELDS(JobDependency, subject); - LIST_FIELDS(JobDependency, object); - - bool matters; - bool conflicts; -}; - -struct Job { - Manager *manager; - Unit *unit; - - LIST_FIELDS(Job, transaction); - LIST_FIELDS(Job, run_queue); - LIST_FIELDS(Job, dbus_queue); - - LIST_HEAD(JobDependency, subject_list); - LIST_HEAD(JobDependency, object_list); - - /* Used for graph algs as a "I have been here" marker */ - Job* marker; - unsigned generation; - - uint32_t id; - - JobType type; - JobState state; - - sd_event_source *timer_event_source; - usec_t begin_usec; - - /* - * This tracks where to send signals, and also which clients - * are allowed to call DBus methods on the job (other than - * root). - * - * There can be more than one client, because of job merging. - */ - sd_bus_track *clients; - char **deserialized_clients; - - JobResult result; - - bool installed:1; - bool in_run_queue:1; - bool matters_to_anchor:1; - bool override:1; - bool in_dbus_queue:1; - bool sent_dbus_new_signal:1; - bool ignore_order:1; - bool irreversible:1; -}; - -Job* job_new(Unit *unit, JobType type); -Job* job_new_raw(Unit *unit); -void job_free(Job *job); -Job* job_install(Job *j); -int job_install_deserialized(Job *j); -void job_uninstall(Job *j); -void job_dump(Job *j, FILE*f, const char *prefix); -int job_serialize(Job *j, FILE *f, FDSet *fds); -int job_deserialize(Job *j, FILE *f, FDSet *fds); -int job_coldplug(Job *j); - -JobDependency* job_dependency_new(Job *subject, Job *object, bool matters, bool conflicts); -void job_dependency_free(JobDependency *l); - -int job_merge(Job *j, Job *other); - -JobType job_type_lookup_merge(JobType a, JobType b) _pure_; - -_pure_ static inline bool job_type_is_mergeable(JobType a, JobType b) { - return job_type_lookup_merge(a, b) >= 0; -} - -_pure_ static inline bool job_type_is_conflicting(JobType a, JobType b) { - return a != JOB_NOP && b != JOB_NOP && !job_type_is_mergeable(a, b); -} - -_pure_ static inline bool job_type_is_superset(JobType a, JobType b) { - /* Checks whether operation a is a "superset" of b in its actions */ - if (b == JOB_NOP) - return true; - if (a == JOB_NOP) - return false; - return a == job_type_lookup_merge(a, b); -} - -bool job_type_is_redundant(JobType a, UnitActiveState b) _pure_; - -/* Collapses a state-dependent job type into a simpler type by observing - * the state of the unit which it is going to be applied to. */ -void job_type_collapse(JobType *t, Unit *u); - -int job_type_merge_and_collapse(JobType *a, JobType b, Unit *u); - -void job_add_to_run_queue(Job *j); -void job_add_to_dbus_queue(Job *j); - -int job_start_timer(Job *j); - -int job_run_and_invalidate(Job *j); -int job_finish_and_invalidate(Job *j, JobResult result, bool recursive); - -char *job_dbus_path(Job *j); - -void job_shutdown_magic(Job *j); - -const char* job_type_to_string(JobType t) _const_; -JobType job_type_from_string(const char *s) _pure_; - -const char* job_state_to_string(JobState t) _const_; -JobState job_state_from_string(const char *s) _pure_; - -const char* job_mode_to_string(JobMode t) _const_; -JobMode job_mode_from_string(const char *s) _pure_; - -const char* job_result_to_string(JobResult t) _const_; -JobResult job_result_from_string(const char *s) _pure_; - -int job_get_timeout(Job *j, uint64_t *timeout) _pure_; |