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 "common.h" 12 13 #include "map.h" 14 #include "vector.h" 15 16 typedef struct git_mwindow { 17 struct git_mwindow *next; 18 git_map window_map; 19 off64_t offset; 20 size_t last_used; 21 size_t inuse_cnt; 22 } git_mwindow; 23 24 typedef struct git_mwindow_file { 25 git_mwindow *windows; 26 int fd; 27 off64_t size; 28 } git_mwindow_file; 29 30 typedef struct git_mwindow_ctl { 31 size_t mapped; 32 unsigned int open_windows; 33 unsigned int mmap_calls; 34 unsigned int peak_open_windows; 35 size_t peak_mapped; 36 size_t used_ctr; 37 git_vector windowfiles; 38 } git_mwindow_ctl; 39 40 int git_mwindow_contains(git_mwindow *win, off64_t offset); 41 void git_mwindow_free_all(git_mwindow_file *mwf); /* locks */ 42 void git_mwindow_free_all_locked(git_mwindow_file *mwf); /* run under lock */ 43 unsigned char *git_mwindow_open(git_mwindow_file *mwf, git_mwindow **cursor, off64_t offset, size_t extra, unsigned int *left); 44 int git_mwindow_file_register(git_mwindow_file *mwf); 45 void git_mwindow_file_deregister(git_mwindow_file *mwf); 46 void git_mwindow_close(git_mwindow **w_cursor); 47 48 extern int git_mwindow_global_init(void); 49 50 struct git_pack_file; /* just declaration to avoid cyclical includes */ 51 int git_mwindow_get_pack(struct git_pack_file **out, const char *path); 52 void git_mwindow_put_pack(struct git_pack_file *pack); 53 54 #endif 55