static void bc_reset(struct bufferchain *bc)
{
/* Free current chain, possibly stuffing back into the pool. */
while(bc->first)
{
struct buffy* buf = bc->first;
bc->first = buf->next;
bc_free(bc, buf);
}
bc_fill_pool(bc); /* Ignoring an error here... */
bc_init(bc);
}
static void bc_reset( bufferchain_t *bc )
{
// free current chain, possibly stuffing back into the pool.
while( bc->first )
{
buffy_t *buf = bc->first;
bc->first = buf->next;
bc_free( bc, buf );
}
bc_fill_pool( bc ); // ignoring an error here...
bc_init( bc );
}
// throw away buffies that we passed.
static void bc_forget( bufferchain_t *bc )
{
buffy_t *b = bc->first;
// free all buffers that are def'n'tly outdated
// we have buffers until filepos... delete all buffers fully below it
while( b != NULL && bc->pos >= b->size )
{
buffy_t *n = b->next; // != NULL or this is indeed the end and the last cycle anyway
if( n == NULL )
bc->last = NULL; // Going to delete the last buffy...
bc->fileoff += b->size;
bc->pos -= b->size;
bc->size -= b->size;
bc_free( bc, b );
b = n;
}
bc->first = b;
bc->firstpos = bc->pos;
}
/* Throw away buffies that we passed. */
static void bc_forget(struct bufferchain *bc)
{
struct buffy *b = bc->first;
/* free all buffers that are def'n'tly outdated */
/* we have buffers until filepos... delete all buffers fully below it */
if(b) debug2("bc_forget: block %lu pos %lu", (unsigned long)b->size, (unsigned long)bc->pos);
else debug("forget with nothing there!");
while(b != NULL && bc->pos >= b->size)
{
struct buffy *n = b->next; /* != NULL or this is indeed the end and the last cycle anyway */
if(n == NULL) bc->last = NULL; /* Going to delete the last buffy... */
bc->fileoff += b->size;
bc->pos -= b->size;
bc->size -= b->size;
debug5("bc_forget: forgot %p with %lu, pos=%li, size=%li, fileoff=%li", (void*)b->data, (long)b->size, (long)bc->pos, (long)bc->size, (long)bc->fileoff);
bc_free(bc, b);
b = n;
}
bc->first = b;
bc->firstpos = bc->pos;
}