54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
/*
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Ringbuffer Implementation for gtvscreen
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Copyright (C) 2000 Marcus Metzler (mocm@metzlerbros.de)
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301 USA.
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*/
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#ifndef RINGBUFFY_H
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#define RINGBUFFY_H
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#define FULL_BUFFER -1000
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typedef struct ringbuffy{
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int read_pos;
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int write_pos;
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int size;
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char *buffy;
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} ringbuffy;
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int ring_init (ringbuffy *rbuf, int size);
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void ring_destroy(ringbuffy *rbuf);
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int ring_write(ringbuffy *rbuf, char *data, int count);
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int ring_read(ringbuffy *rbuf, char *data, int count);
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int ring_write_file(ringbuffy *rbuf, int fd, int count);
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int ring_read_file(ringbuffy *rbuf, int fd, int count);
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int ring_rest(ringbuffy *rbuf);
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int ring_peek(ringbuffy *rbuf, char *data, int count, long off);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* RINGBUFFY_H */
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