reftable/writer.h

   1 /*
   2 Copyright 2020 Google LLC
   3
   4 Use of this source code is governed by a BSD-style
   5 license that can be found in the LICENSE file or at
   6 https://developers.google.com/open-source/licenses/bsd
   7 */
   8
   9 #ifndef WRITER_H
  10 #define WRITER_H
  11
  12 #include "basics.h"
  13 #include "block.h"
  14 #include "tree.h"
  15 #include "reftable-writer.h"
  16
  17 struct reftable_writer {
  18         ssize_t (*write)(void *, const void *, size_t);
  19         int (*flush)(void *);
  20         void *write_arg;
  21         int pending_padding;
  22         struct reftable_buf last_key;
  23         /* Scratch buffer used to avoid allocations. */
  24         struct reftable_buf scratch;
  25
  26         /* offset of next block to write. */
  27         uint64_t next;
  28         uint64_t min_update_index, max_update_index;
  29         struct reftable_write_options opts;
  30
  31         /* memory buffer for writing */
  32         uint8_t *block;
  33
  34         /* writer for the current section. NULL or points to
  35          * block_writer_data */
  36         struct block_writer *block_writer;
  37
  38         struct block_writer block_writer_data;
  39
  40         /* pending index records for the current section */
  41         struct reftable_index_record *index;
  42         size_t index_len;
  43         size_t index_cap;
  44
  45         /*
  46          * tree for use with tsearch; used to populate the 'o' inverse OID
  47          * map */
  48         struct tree_node *obj_index_tree;
  49
  50         struct reftable_stats stats;
  51 };
  52
  53 #endif