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7bfdb3d22b
This code is useful for more things than just the packfile handling code. Factor it out so it can be reused. Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>
65 lines
2.2 KiB
C
65 lines
2.2 KiB
C
/*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2,
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* as published by the Free Software Foundation.
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*
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* In addition to the permissions in the GNU General Public License,
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* the authors give you unlimited permission to link the compiled
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* version of this file into combinations with other programs,
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* and to distribute those combinations without any restriction
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* coming from the use of this file. (The General Public License
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* restrictions do apply in other respects; for example, they cover
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* modification of the file, and distribution when not linked into
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* a combined executable.)
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*
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* This file is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef INCLUDE_mwindow__
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#define INCLUDE_mwindow__
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#include "map.h"
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#include "vector.h"
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#include "fileops.h"
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typedef struct git_mwindow {
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struct git_mwindow *next;
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git_map window_map;
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off_t offset;
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unsigned int last_used;
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unsigned int inuse_cnt;
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} git_mwindow;
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typedef struct git_mwindow_file {
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git_mwindow *windows;
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} git_mwindow_file;
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typedef struct git_mwindow_ctl {
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size_t mapped;
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unsigned int open_windows;
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size_t window_size; /* needs default value */
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size_t mapped_limit; /* needs default value */
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unsigned int mmap_calls;
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unsigned int peak_open_windows;
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size_t peak_mapped;
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size_t used_ctr;
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git_vector windowfiles;
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} git_mwindow_ctl;
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int git_mwindow_contains(git_mwindow *win, off_t offset);
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void git_mwindow_free_all(git_mwindow_file *mwf);
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unsigned char *git_mwindow_open(git_mwindow_file *mwf, git_mwindow **cursor, git_file fd, size_t size, off_t offset, int extra, unsigned int *left);
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void git_mwindow_scan_lru(git_mwindow_file *mwf, git_mwindow **lru_w, git_mwindow **lru_l);
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int git_mwindow_file_register(git_mwindow_file *mwf);
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void git_mwindow_close(git_mwindow **w_cursor);
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#endif
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