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comment on top of the _rio structure modified for correctness as actually fwrite/fread semantics is different in general, but was 0/1 in our old usage before rio.c as we always used 1 as number items, and the actual number of bytes to read as item length.

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antirez 2011-09-22 15:47:48 +02:00
parent f9c6f39b2b
commit 4c0462972e
1 changed files with 3 additions and 2 deletions
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5
src/rio.h
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@ -5,8 +5,9 @@
#include "sds.h"
struct _rio {
/* Backend functions. Both read and write should return 0 for short reads
* or writes, identical to the return values of fread/fwrite. */
/* Backend functions.
* Since this functions do not tolerate short writes or reads the return
* value is simplified to: zero on error, non zero on complete success. */
size_t (*read)(struct _rio *, void *buf, size_t len);
size_t (*write)(struct _rio *, const void *buf, size_t len);
off_t (*tell)(struct _rio *);