/* Make the buffer count in the pool match the pool size. */
static int bc_fill_pool(struct bufferchain *bc)
{
/* Remove superfluous ones. */
while(bc->pool_fill > bc->pool_size)
{
/* Lazyness: Just work on the front. */
struct buffy* buf = bc->pool;
bc->pool = buf->next;
buffy_del(buf);
--bc->pool_fill;
}
/* Add missing ones. */
while(bc->pool_fill < bc->pool_size)
{
/* Again, just work on the front. */
struct buffy* buf;
buf = buffy_new(0, bc->bufblock); /* Use default block size. */
if(!buf) return -1;
buf->next = bc->pool;
bc->pool = buf;
++bc->pool_fill;
}
return 0;
}
// make the buffer count in the pool match the pool size.
static int bc_fill_pool( bufferchain_t *bc )
{
// remove superfluous ones.
while( bc->pool_fill > bc->pool_size )
{
// lazyness: Just work on the front.
buffy_t *buf = bc->pool;
bc->pool = buf->next;
buffy_del( buf );
bc->pool_fill--;
}
// add missing ones.
while( bc->pool_fill < bc->pool_size )
{
// again, just work on the front.
buffy_t *buf = buffy_new( 0, bc->bufblock ); // use default block size.
if( !buf ) return -1;
buf->next = bc->pool;
bc->pool = buf;
bc->pool_fill++;
}
return 0;
}
/* Fetch a buffer from the pool (if possible) or create one. */
static struct buffy* bc_alloc(struct bufferchain *bc, size_t size)
{
/* Easy route: Just try the first available buffer.
Size does not matter, it's only a hint for creation of new buffers. */
if(bc->pool)
{
struct buffy *buf = bc->pool;
bc->pool = buf->next;
buf->next = NULL; /* That shall be set to a sensible value later. */
buf->size = 0;
--bc->pool_fill;
return buf;
}
else return buffy_new(size, bc->bufblock);
}
// fetch a buffer from the pool (if possible) or create one.
static buffy_t* bc_alloc( bufferchain_t *bc, size_t size )
{
// Easy route: Just try the first available buffer.
// size does not matter, it's only a hint for creation of new buffers.
if( bc->pool )
{
buffy_t *buf = bc->pool;
bc->pool = buf->next;
buf->next = NULL; // that shall be set to a sensible value later.
buf->size = 0;
bc->pool_fill--;
return buf;
}
return buffy_new( size, bc->bufblock );
}
