void *needLargeZeroedMemResize(void* vp, size_t oldSize, size_t newSize)
/* Adjust memory size on a block, possibly relocating it. If vp is NULL, a
* new memory block is allocated. If block is grown, new memory is zeroed. */
{
void *v = needLargeMemResize(vp, newSize);
if (newSize > oldSize)
memset(((char*)v)+oldSize, 0, newSize-oldSize);
return v;
}
static UBYTE *clearBaseArray(struct cDnaAlign *aln)
/* get cleared per-base array, growing if needed. Warning: this static */
{
static UBYTE *bases = NULL;
static unsigned maxBases = 0;
if (aln->psl->qSize > maxBases)
{
maxBases = 2*aln->psl->qSize;
bases = needLargeMemResize(bases, maxBases);
}
zeroBytes(bases, maxBases);
return bases;
}