/*

 * Copyright (C) the libgit2 contributors. All rights reserved.

 *

 * This file is part of libgit2, distributed under the GNU GPL v2 with

 * a Linking Exception. For full terms see the included COPYING file.

 */

#ifndef INCLUDE_mwindow__

#define INCLUDE_mwindow__

#include "map.h"

#include "vector.h"

typedef struct git_mwindow {

	struct git_mwindow *next;

	git_map window_map;

	git_off_t offset;

	size_t last_used;

	size_t inuse_cnt;

} git_mwindow;

typedef struct git_mwindow_file {

	git_mwindow *windows;

	int fd;

	git_off_t size;

} git_mwindow_file;

typedef struct git_mwindow_ctl {

	size_t mapped;

	unsigned int open_windows;

	unsigned int mmap_calls;

	unsigned int peak_open_windows;

	size_t peak_mapped;

	size_t used_ctr;

	git_vector windowfiles;

} git_mwindow_ctl;

int git_mwindow_contains(git_mwindow *win, git_off_t offset);

void git_mwindow_free_all(git_mwindow_file *mwf); /* locks */

void git_mwindow_free_all_locked(git_mwindow_file *mwf); /* run under lock */

unsigned char *git_mwindow_open(git_mwindow_file *mwf, git_mwindow **cursor, git_off_t offset, size_t extra, unsigned int *left);

int git_mwindow_file_register(git_mwindow_file *mwf);

void git_mwindow_file_deregister(git_mwindow_file *mwf);

void git_mwindow_close(git_mwindow **w_cursor);

extern int git_mwindow_global_init(void);

struct git_pack_file; /* just declaration to avoid cyclical includes */

int git_mwindow_get_pack(struct git_pack_file **out, const char *path);

void git_mwindow_put_pack(struct git_pack_file *pack);

#endif