common.h

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#ifndef _COMMON_H_
#define _COMMON_H_

#include <stdio.h>
#include <sys/types.h>

#define DEFAULT_SCHED_CAPTION "TimeManager."

#define DEFAULT_SEMAPHORE_NAME "/sem_timemanager"

#define DEFAULT_SHARED_MEMORY_NAME "/shm_timemanager"

#define SHARED_MEMORY_SIZE 65536

#define MAX_NUM_DB 5

#define ENV_NAME "TM_DB_NUM"

#define EXIT_MISUSE 2

#define MAX_NUM_SCHEDULES 1024

#define MAX_CAPTION_LEN 256

#define MAX_SCHEDULE_STRING_LEN 512

#define MAX_RECORD_STRING_LEN 510

struct schedule {
  pid_t pgid;  
  int lock; 
  pid_t terminator; 
  time_t start;  
  unsigned int duration;  
  char caption[MAX_CAPTION_LEN];  
};

#ifdef __cplusplus
extern "C" {
#endif

  int check_sched_conflict(struct schedule* sched, struct schedule* *scheds, size_t len);
  
  void cleanup_schedules(struct schedule* *scheds, size_t len);

  int create_schedule(pid_t pgid, int lock, pid_t terminator,
              time_t start, unsigned int duration, const char *caption,
              struct schedule* *sched);

  void debug_schedule(const char* comment, struct schedule* *scheds,
              size_t len);

  int get_env(char *sem_name, char *shm_name);

  int find_sched_by_pgid(pid_t pgid, struct schedule* *scheds, size_t len,
             struct schedule* *sched);


  size_t generate_unoccupied_scheds_from_scheds(struct schedule** scheds,
                        size_t len,
                       struct schedule** unoccupied_scheds,
                        size_t max_len,
                        time_t range_start,
                        unsigned int range_dur,
                        const char* caption);

  int load_schedules(const char* shm_path, size_t shm_size,
             struct schedule** scheds, size_t scheds_len,
             size_t *loaded_len);

  int save_schedules(const char* path, const size_t size,
             struct schedule** scheds, size_t len);

  void sort_schedules(struct schedule** scheds, size_t len);

  int string_to_schedule(const char* str, struct schedule* *sched);

#ifdef __cplusplus
}
#endif

#endif