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common/iobuf.h: Clarify semantics of nofast. Simplify implementation.

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* common/iobuf.h (struct iobuf_struct): Clarify semantics of nofast.
Simplify use of nofast to implement just these semantics.

--
Signed-off-by: Neal H. Walfield <neal@g10code.com>.
This commit is contained in:
Neal H. Walfield 2015-08-09 16:53:51 +02:00
parent e8c0b6abf8
commit 12fc56bcb5
2 changed files with 9 additions and 5 deletions
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8
common/iobuf.c
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@ -1651,7 +1651,7 @@ iobuf_push_filter2 (iobuf_t a,
/* disable nlimit for the new stream */
a->ntotal = b->ntotal + b->nbytes;
a->nlimit = a->nbytes = 0;
a->nofast &= ~1;
a->nofast = 0;
/* make a link from the new stream to the original stream */
a->chain = b;
@ -2124,9 +2124,9 @@ void
iobuf_set_limit (iobuf_t a, off_t nlimit)
{
if (nlimit)
a->nofast |= 1;
a->nofast = 1;
else
a->nofast &= ~1;
a->nofast = 0;
a->nlimit = nlimit;
a->ntotal += a->nbytes;
a->nbytes = 0;
@ -2308,7 +2308,7 @@ iobuf_seek (iobuf_t a, off_t newpos)
a->d.start = 0;
a->nbytes = 0;
a->nlimit = 0;
a->nofast &= ~1;
a->nofast = 0;
a->ntotal = newpos;
a->error = 0;
/* remove filters, but the last */

6
common/iobuf.h
View File

@ -75,7 +75,11 @@ struct iobuf_struct
off_t nlimit;
off_t nbytes; /* Used together with nlimit. */
off_t ntotal; /* Total bytes read (position of stream). */
int nofast; /* Used by the iobuf_get (). */
/* Whether we need to read from the filter one byte at a time or
whether we can do bulk reads. We need to read one byte at a time
if a limit (set via iobuf_set_limit) is active. */
int nofast;
struct
{
size_t size; /* Allocated size */