object_maintainance.h

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#ifndef __NVM_OBJ_MAINTAIN__
#define __NVM_OBJ_MAINTAIN__
 
#include <uv.h>
#include "globals.h"
#include "malloc.h"
#include <time.h>
#include <sys/queue.h>
 
#define DELETE_LOOP_SLEEP_TIME 1000    // 5 milli secs
#define MOVE_LOOP_SLEEP_TIME 1000    // 5 milli secs
 
typedef enum access_type_en {
    ACCESS_UNKNOWN,
    READ,
    WRITE
} access_types_t;
 
typedef enum shitf_levels_en {
    JUST_ENTERED,   // After it has entered a RAM
    ONE,
    TWO,
    THREE,
    FOUR,
    MOVE_NOW    // Move in the next cycle
} shift_levels_t;
 
typedef enum where_en {
    RAM_UNKNOWN,    // A default
    DRAM,
    NVRAM,
    NO_RAM    // to be deleted
} where_t;
 
typedef struct object_maintainance_st {
    MEMoidKey key;
    MEMoid oid;
 
    uint32_t num_reads;
    uint32_t num_writes;
    time_t last_accessed_at;
    time_t time_since_previous_access;
    access_types_t previous_access_type;
 
    uint64_t *write_bitmap;
    uint64_t *read_bitmap;
 
    uint64_t w_entropy;
    uint64_t r_entropy;
    void* last_write;
    void* last_read;
    size_t last_write_size;
    size_t last_read_size;
    size_t bytes_write;
    size_t bytes_read;
 
    where_t which_ram;
 
    shift_levels_t shift_level;
 
    bool can_be_moved;
} object_maintainance;
 
 
typedef struct object_maintainance_addition {
    MEMoidKey key;
    MEMoid oid;
 
    where_t which_ram;
    bool can_be_moved;
 
    TAILQ_ENTRY(object_maintainance_addition) list;
 
} object_maintainance_addition;
 
typedef struct object_maintainance_deletion {
    MEMoidKey key;
    MEMoid oid;
 
    where_t which_ram;
    bool can_be_moved;
 
    TAILQ_ENTRY(object_maintainance_deletion) list;
 
} object_maintainance_deletion;
 
TAILQ_HEAD(object_maintainance_addition_list, object_maintainance_addition) addition_queue_head;
TAILQ_HEAD(object_maintainance_deletion_list, object_maintainance_deletion) deletion_queue_head;
 
 
void initialise_logistics();
 
void lock_om();
 
void unlock_om();
// uv_loop_t* get_logistics_loop();
 
// Returns the actaul object in the map as a pointer.
object_maintainance* find_in_maintainance_map(MEMoidKey key);
 
void insert_into_maintainance_map(object_maintainance *obj);
 
void delete_from_maintainance_map(object_maintainance *obj);
 
object_maintainance* create_new_maintainance_map_entry(MEMoidKey key, MEMoid oid, where_t which_ram, bool can_be_moved);
 
#endif // !__NVM_OBJ_MAINTAIN__