/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-#ifndef foojobhfoo
-#define foojobhfoo
+#pragma once
/***
This file is part of systemd.
typedef enum JobMode JobMode;
typedef enum JobResult JobResult;
-#include "manager.h"
-#include "transaction.h"
-#include "unit.h"
-#include "hashmap.h"
-#include "list.h"
-
/* 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_STOP,
- JOB_RELOAD, /* if running reload */
- JOB_RELOAD_OR_START, /* if running reload, if not running start */
+ 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_TRY_RESTART, /* if running stop and then 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, it won't have to merge with anything.
+ * job_install() avoids the problem of merging JOB_NOP too (it's
+ * special-cased, only merges with other JOB_NOPs). */
+ 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 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,
};
enum JobResult {
- JOB_DONE,
- JOB_CANCELED,
- JOB_TIMEOUT,
- JOB_FAILED,
- JOB_DEPENDENCY,
- JOB_SKIPPED,
+ JOB_DONE, /* Job completed successfully */
+ JOB_CANCELED, /* Job canceled by a conflicting job installation or by explicit cancel request */
+ JOB_TIMEOUT, /* JobTimeout 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_RESULT_MAX,
_JOB_RESULT_INVALID = -1
};
+#include "sd-event.h"
+#include "manager.h"
+#include "unit.h"
+#include "hashmap.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. */
JobType type;
JobState state;
- Watch timer_watch;
+ sd_event_source *timer_event_source;
+ usec_t begin_usec;
- /* Note that this bus object is not ref counted here. */
- DBusConnection *bus;
- char *bus_client;
+ /*
+ * 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 in_dbus_queue:1;
bool sent_dbus_new_signal:1;
bool ignore_order:1;
+ bool irreversible:1;
};
Job* job_new(Unit *unit, JobType type);
-void job_uninstall(Job *j);
+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, Transaction *tr);
-void job_dependency_free(JobDependency *l, Transaction *tr);
-
-bool job_is_anchor(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);
-
-static inline int job_type_merge(JobType *a, JobType b) {
- JobType t = job_type_lookup_merge(*a, b);
- if (t < 0)
- return -EEXIST;
- *a = t;
- return 0;
-}
+JobType job_type_lookup_merge(JobType a, JobType b) _pure_;
-static inline bool job_type_is_mergeable(JobType a, JobType b) {
+_pure_ static inline bool job_type_is_mergeable(JobType a, JobType b) {
return job_type_lookup_merge(a, b) >= 0;
}
-static inline bool job_type_is_conflicting(JobType a, JobType b) {
+_pure_ static inline bool job_type_is_conflicting(JobType a, JobType b) {
return !job_type_is_mergeable(a, b);
}
-static inline bool job_type_is_superset(JobType a, JobType 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 */
return a == job_type_lookup_merge(a, b);
}
-bool job_type_is_redundant(JobType a, UnitActiveState b);
+bool job_type_is_redundant(JobType a, UnitActiveState b) _pure_;
-bool job_is_runnable(Job *j);
+/* 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);
-void job_timer_event(Job *j, uint64_t n_elapsed, Watch *w);
int job_run_and_invalidate(Job *j);
-int job_finish_and_invalidate(Job *j, JobResult result);
+int job_finish_and_invalidate(Job *j, JobResult result, bool recursive);
char *job_dbus_path(Job *j);
-const char* job_type_to_string(JobType t);
-JobType job_type_from_string(const char *s);
+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);
-JobState job_state_from_string(const char *s);
+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);
-JobMode job_mode_from_string(const char *s);
+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);
-JobResult job_result_from_string(const char *s);
+const char* job_result_to_string(JobResult t) _const_;
+JobResult job_result_from_string(const char *s) _pure_;
-#endif
+int job_get_timeout(Job *j, uint64_t *timeout) _pure_;
~ianmdlvl / elogind.git / blobdiff