src/lib-index/mail-index-view-private.h

	mail-index-view-private.h revision 0d70a702dec63d22535684fec6a7247c5f153208
#ifndef __MAIL_INDEX_VIEW_PRIVATE_H
#define __MAIL_INDEX_VIEW_PRIVATE_H

#include "mail-index-private.h"

struct mail_index_view_log_sync_area {
    uint32_t log_file_seq;
    unsigned int length;
    uoff_t log_file_offset;
};
ARRAY_DEFINE_TYPE(view_log_sync_area, struct mail_index_view_log_sync_area);

struct mail_index_view_vfuncs {
    void (*close)(struct mail_index_view *view);
    uint32_t (*get_messages_count)(struct mail_index_view *view);
    const struct mail_index_header *
        (*get_header)(struct mail_index_view *view);
    int (*lookup_full)(struct mail_index_view *view, uint32_t seq,
               struct mail_index_map **map_r,
               const struct mail_index_record **rec_r);
    int (*lookup_uid)(struct mail_index_view *view, uint32_t seq,
              uint32_t *uid_r);
    int (*lookup_uid_range)(struct mail_index_view *view,
                uint32_t first_uid, uint32_t last_uid,
                uint32_t *first_seq_r, uint32_t *last_seq_r);
    int (*lookup_first)(struct mail_index_view *view, enum mail_flags flags,
                uint8_t flags_mask, uint32_t *seq_r);
    int (*lookup_ext_full)(struct mail_index_view *view, uint32_t seq,
                   uint32_t ext_id, struct mail_index_map **map_r,
                   const void **data_r);
    int (*get_header_ext)(struct mail_index_view *view,
                  struct mail_index_map *map, uint32_t ext_id,
                  const void **data_r, size_t *data_size_r);
};

union mail_index_view_module_context {
    struct mail_index_module_register *reg;
};

struct mail_index_view {
    int refcount;

    struct mail_index_view_vfuncs v;
    struct mail_index *index;
        struct mail_transaction_log_view *log_view;

    unsigned int indexid;
    struct mail_index_map *map;
    /* After syncing view, map is replaced with sync_new_map. */
    struct mail_index_map *sync_new_map;
    /* All mappings where we have returned records. They need to be kept
       valid until view is synchronized. */
    ARRAY_DEFINE(map_refs, struct mail_index_map *);

    struct mail_index_header hdr;

    /* (append, expunge) <= head */
    uint32_t log_file_append_seq, log_file_expunge_seq, log_file_head_seq;
    uoff_t log_file_append_offset, log_file_expunge_offset;
    uoff_t log_file_head_offset;

    /* Transaction log offsets which we don't want to return in view sync */
    ARRAY_TYPE(view_log_sync_area) syncs_hidden;

    /* Module-specific contexts. */
    ARRAY_DEFINE(module_contexts, union mail_index_view_module_context *);

    int transactions;
    unsigned int lock_id;

    unsigned int inconsistent:1;
    /* this view was created by mail_index_sync_begin() */
    unsigned int index_sync_view:1;
    /* this view is being synced */
    unsigned int syncing:1;
    unsigned int broken_counters:1;
};

struct mail_index_view *
mail_index_view_open_with_map(struct mail_index *index,
                  struct mail_index_map *map);
void mail_index_view_clone(struct mail_index_view *dest,
               const struct mail_index_view *src);
void mail_index_view_ref(struct mail_index_view *view);
int mail_index_view_lock(struct mail_index_view *view);
int mail_index_view_lock_head(struct mail_index_view *view);
void mail_index_view_unref_maps(struct mail_index_view *view);
void mail_index_view_add_hidden_transaction(struct mail_index_view *view,
                        uint32_t log_file_seq,
                        uoff_t log_file_offset,
                        unsigned int length);

struct mail_index_view *mail_index_dummy_view_open(struct mail_index *index);

#endif