move libsystemd_core.la sources into core/

1 files changed, 200 insertions, 0 deletions

diff --git a/src/core/job.h b/src/core/job.h
new file mode 100644
index 0000000000..60a43e074d
--- /dev/null
+++ b/src/core/job.h
@@ -0,0 +1,200 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#ifndef foojobhfoo
+#define foojobhfoo
+
+/***
+  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 General Public License as published by
+  the Free Software Foundation; either version 2 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
+  General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stdbool.h>
+#include <inttypes.h>
+#include <errno.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;
+
+#include "manager.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_VERIFY_ACTIVE,
+
+        JOB_STOP,
+
+        JOB_RELOAD,                 /* if running reload */
+        JOB_RELOAD_OR_START,        /* if running reload, if not running start */
+
+        /* 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_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_ISOLATE,             /* Start a unit, and stop all others */
+        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_CANCELED,
+        JOB_TIMEOUT,
+        JOB_FAILED,
+        JOB_DEPENDENCY,
+        JOB_SKIPPED,
+        _JOB_RESULT_MAX,
+        _JOB_RESULT_INVALID = -1
+};
+
+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;
+
+        Watch timer_watch;
+
+        /* Note that this bus object is not ref counted here. */
+        DBusConnection *bus;
+        char *bus_client;
+
+        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;
+};
+
+Job* job_new(Manager *m, JobType type, Unit *unit);
+void job_free(Job *job);
+void job_dump(Job *j, FILE*f, const char *prefix);
+
+JobDependency* job_dependency_new(Job *subject, Job *object, bool matters, bool conflicts);
+void job_dependency_free(JobDependency *l);
+
+bool job_is_anchor(Job *j);
+
+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;
+}
+
+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) {
+        return !job_type_is_mergeable(a, b);
+}
+
+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_is_runnable(Job *j);
+
+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);
+
+char *job_dbus_path(Job *j);
+
+const char* job_type_to_string(JobType t);
+JobType job_type_from_string(const char *s);
+
+const char* job_state_to_string(JobState t);
+JobState job_state_from_string(const char *s);
+
+const char* job_mode_to_string(JobMode t);
+JobMode job_mode_from_string(const char *s);
+
+const char* job_result_to_string(JobResult t);
+JobResult job_result_from_string(const char *s);
+
+#endif