54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
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#ifndef _LIBC_IO_RINGBUF_H_
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#define _LIBC_IO_RINGBUF_H_
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#include <stddef.h>
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enum ringbuf_flags {
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RINGBUF_NONE = 0,
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RINGBUF_STATIC,
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};
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struct ringbuf {
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enum ringbuf_flags buf_flags;
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char *buf_ptr;
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size_t buf_max;
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size_t buf_readp, buf_writep;
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};
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extern int __libc_ringbuf_get_read_buffer(
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struct ringbuf *buf,
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const char **out_bufp,
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size_t *out_len);
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extern void __libc_ringbuf_put_read_buffer(
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struct ringbuf *buf,
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const char **bufp,
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size_t *len);
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extern int __libc_ringbuf_get_write_buffer(
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struct ringbuf *buf,
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char **out_bufp,
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size_t *out_len);
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extern void __libc_ringbuf_put_write_buffer(
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struct ringbuf *buf,
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char **bufp,
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size_t *len);
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extern long __libc_ringbuf_read(struct ringbuf *buf, void *p, size_t count);
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extern long __libc_ringbuf_write(
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struct ringbuf *buf,
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const void *p,
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size_t count);
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extern int __libc_ringbuf_clear(struct ringbuf *buf);
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extern int __libc_ringbuf_resize(struct ringbuf *buf, size_t max);
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extern int __libc_ringbuf_resize_static(
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struct ringbuf *buf,
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void *p,
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size_t max);
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extern size_t __libc_ringbuf_available(const struct ringbuf *buf);
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extern size_t __libc_ringbuf_capacity(const struct ringbuf *buf);
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#endif
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