job.h

   1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
   2
   3 #ifndef foojobhfoo
   4 #define foojobhfoo
   5
   6 #include <stdbool.h>
   7 #include <inttypes.h>
   8
   9 typedef struct Job Job;
  10 typedef struct JobDependency JobDependency;
  11 typedef enum JobType JobType;
  12 typedef enum JobMode JobMode;
  13 typedef enum JobState JobState;
  14
  15 #include "manager.h"
  16 #include "name.h"
  17 #include "hashmap.h"
  18 #include "list.h"
  19
  20 enum JobType {
  21         JOB_START,
  22         JOB_STOP,
  23         JOB_VERIFY_STARTED,
  24         JOB_RELOAD,          /* reload if running */
  25         JOB_RELOAD_OR_START, /* reload if running, start if not running */
  26         JOB_RESTART,         /* stop if running, then start unconditionally */
  27         JOB_TRY_RESTART,     /* stop and start if running */
  28         _JOB_TYPE_MAX,
  29         _JOB_TYPE_INVALID = -1
  30 };
  31
  32 enum JobState {
  33         JOB_WAITING,
  34         JOB_RUNNING,
  35         JOB_DONE,
  36         _JOB_STATE_MAX
  37 };
  38
  39 enum JobMode {
  40         JOB_FAIL,
  41         JOB_REPLACE,
  42         _JOB_MODE_MAX
  43 };
  44
  45 struct JobDependency {
  46         /* Encodes that the 'subject' job needs the 'object' job in
  47          * some way. This structure is used only while building a transaction. */
  48         Job *subject;
  49         Job *object;
  50
  51         bool matters;
  52
  53         /* Linked list for the subjects, resp objects */
  54         JobDependency *subject_prev, *subject_next;
  55         JobDependency *object_prev, *object_next;
  56 };
  57
  58 struct Job {
  59         Manager *manager;
  60         uint32_t id;
  61
  62         Name *name;
  63
  64         JobType type;
  65         JobState state;
  66
  67         bool linked:1;
  68         bool matters_to_anchor:1;
  69
  70         /* These fields are used only while building a transaction */
  71         Job *transaction_next, *transaction_prev;
  72
  73         JobDependency *subject_list;
  74         JobDependency *object_list;
  75
  76         /* used for graph algs as a "I have been here" marker */
  77         Job* marker;
  78         unsigned generation;
  79 };
  80
  81 Job* job_new(Manager *m, JobType type, Name *name);
  82 void job_free(Job *job);
  83 void job_dump(Job *j, FILE*f, const char *prefix);
  84
  85 JobDependency* job_dependency_new(Job *subject, Job *object, bool matters);
  86 void job_dependency_free(JobDependency *l);
  87 void job_dependency_delete(Job *subject, Job *object, bool *matters);
  88
  89 bool job_is_anchor(Job *j);
  90
  91 int job_merge(Job *j, Job *other);
  92
  93 const char* job_type_to_string(JobType t);
  94 int job_type_merge(JobType *a, JobType b);
  95 bool job_type_mergeable(JobType a, JobType b);
  96 bool job_type_is_superset(JobType a, JobType b);
  97
  98 #endif