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View Code? Open in Web Editor NEWA circular buffer alternative written in C under a BSD license
License: Other
A circular buffer alternative written in C under a BSD license
License: Other
Here's a different implementation of bipbup_offer() :
Advantage is slightly increased efficiency, at basically 0 cost.
Note : currently untested
*****
int bipbuf_offer(bipbuf_t* me, const unsigned char *data, const int size)
{
if (1 == me->b_inuse)
{
/* check available space between region B and region A */
if ((me->a_start - me->b_end) < size) return 0;
memcpy(me->data + me->b_end, data, size);
me->b_end += size;
return size;
}
/* no B area (yet). Check if we can fit in the remaining space */
if (size < (me->size - me->a_end))
{
memcpy(me->data + me->a_end, data, size);
me->a_end += size;
return size;
}
/* didn't fit, activate B if possible */
if (size > (me->a_start))
{
/* won't fit */
return 0;
}
me->b_inuse = 1;
memcpy(me->data, data, size);
me->b_end += size;
return size;
}
if I have a buff like below:
****12**
^
|
A
Region B is not used.
Now, if I want to offer more than 2 bytes for example 4 bytes "3456", the bipbuf_offer
will return 0.
But there are enough buffer for 4bytes, it can offer region B and the result will like below:
345612**
^ ^
| |
B A
Neat and tidy implementation and i'll be using it in C ( thats how i found it , through searching for Bip in C )
But please add attribution somewhere as per
http://accidentalscientist.com/2010/02/the-darker-side-of-google-open-source-taking-without-attribution.html
if I have a buff like below:
**12
^
|
A
Region B is not used.
Now, if I want to offer more than 2 bytes for example 4 bytes "3456", the bipbuf_offer will return 0.
But there are enough buffer for 4bytes, it can offer region B and the result will like below:
345612**
^ ^
| |
B A
I noticed you're listed here but missing a package.json
You don't need this check, you can just do that unconditionally and it'll work in both cases.
Line 125 in cb7b9ad
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