src/mwindow.h

   1 /*
   2  * Copyright (C) the libgit2 contributors. All rights reserved.
   3  *
   4  * This file is part of libgit2, distributed under the GNU GPL v2 with
   5  * a Linking Exception. For full terms see the included COPYING file.
   6  */
   7
   8 #ifndef INCLUDE_mwindow__
   9 #define INCLUDE_mwindow__
  10
  11 #include "map.h"
  12 #include "vector.h"
  13
  14 typedef struct git_mwindow {
  15         struct git_mwindow *next;
  16         git_map window_map;
  17         git_off_t offset;
  18         size_t last_used;
  19         size_t inuse_cnt;
  20 } git_mwindow;
  21
  22 typedef struct git_mwindow_file {
  23         git_mwindow *windows;
  24         int fd;
  25         git_off_t size;
  26 } git_mwindow_file;
  27
  28 typedef struct git_mwindow_ctl {
  29         size_t mapped;
  30         unsigned int open_windows;
  31         unsigned int mmap_calls;
  32         unsigned int peak_open_windows;
  33         size_t peak_mapped;
  34         size_t used_ctr;
  35         git_vector windowfiles;
  36 } git_mwindow_ctl;
  37
  38 int git_mwindow_contains(git_mwindow *win, git_off_t offset);
  39 void git_mwindow_free_all(git_mwindow_file *mwf); /* locks */
  40 void git_mwindow_free_all_locked(git_mwindow_file *mwf); /* run under lock */
  41 unsigned char *git_mwindow_open(git_mwindow_file *mwf, git_mwindow **cursor, git_off_t offset, size_t extra, unsigned int *left);
  42 int git_mwindow_file_register(git_mwindow_file *mwf);
  43 void git_mwindow_file_deregister(git_mwindow_file *mwf);
  44 void git_mwindow_close(git_mwindow **w_cursor);
  45
  46 int git_mwindow_files_init(void);
  47 void git_mwindow_files_free(void);
  48
  49 struct git_pack_file; /* just declaration to avoid cyclical includes */
  50 int git_mwindow_get_pack(struct git_pack_file **out, const char *path);
  51 void git_mwindow_put_pack(struct git_pack_file *pack);
  52
  53 #endif