manager.h

   1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
   2
   3 #ifndef foomanagerhfoo
   4 #define foomanagerhfoo
   5
   6 #include <stdbool.h>
   7 #include <inttypes.h>
   8 #include <stdio.h>
   9
  10 typedef struct Manager Manager;
  11 typedef enum WatchType WatchType;
  12 typedef struct Watch Watch;
  13
  14 enum WatchType {
  15         WATCH_INVALID,
  16         WATCH_SIGNAL_FD,
  17         WATCH_FD,
  18         WATCH_TIMER
  19 };
  20
  21 struct Watch {
  22         int fd;
  23         WatchType type;
  24         union Unit *unit;
  25 };
  26
  27 #include "unit.h"
  28 #include "job.h"
  29 #include "hashmap.h"
  30 #include "list.h"
  31 #include "set.h"
  32
  33 struct Manager {
  34         uint32_t current_job_id;
  35
  36         /* Note that the set of units we know of is allowed to be
  37          * incosistent. However the subset of it that is loaded may
  38          * not, and the list of jobs may neither. */
  39
  40         /* Active jobs and units */
  41         Hashmap *units;  /* name string => Unit object n:1 */
  42         Hashmap *jobs;   /* job id => Job object 1:1 */
  43
  44         /* Units that need to be loaded */
  45         LIST_HEAD(Meta, load_queue); /* this is actually more a stack than a queue, but uh. */
  46
  47         /* Jobs that need to be run */
  48         LIST_HEAD(Job, run_queue);   /* more a stack than a queue, too */
  49
  50         /* Jobs to be added */
  51         Hashmap *transaction_jobs;      /* Unit object => Job object list 1:1 */
  52         JobDependency *transaction_anchor;
  53
  54         bool dispatching_load_queue:1;
  55         bool dispatching_run_queue:1;
  56
  57         Hashmap *watch_pids;  /* pid => Unit object n:1 */
  58
  59         int epoll_fd;
  60
  61         Watch signal_watch;
  62 };
  63
  64 Manager* manager_new(void);
  65 void manager_free(Manager *m);
  66
  67 Job *manager_get_job(Manager *m, uint32_t id);
  68 Unit *manager_get_unit(Manager *m, const char *name);
  69
  70 int manager_load_unit(Manager *m, const char *path_or_name, Unit **_ret);
  71 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, Job **_ret);
  72
  73 void manager_dump_units(Manager *s, FILE *f, const char *prefix);
  74 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix);
  75
  76 void manager_transaction_unlink_job(Manager *m, Job *j);
  77
  78 void manager_clear_jobs(Manager *m);
  79
  80 void manager_dispatch_run_queue(Manager *m);
  81 int manager_loop(Manager *m);
  82
  83 #endif