struct buf *
blk_read(blk_nr_t blk_nr)
{
struct buf *bufp;
bufp = blk_get(blk_nr);
if (!bufp)
kpanic("blk_read(): Null buffer block pointer");
if (!bufp->valid)
ramfs_read(bufp);
return bufp;
}
void solve2() {
// we need to manage concurrency at CPU level here to call multiple blocks
for (unsigned bi=0;bi<M_H/B_H;++bi) {
for (unsigned bj=0;bj<M_W/B_W;++bj) {
blk_t blk = blk_get(bi,bj);
// --------- Solving non-serial dependencies
#if NONSERIAL>0
TC** c_list[2]={NULL,NULL}; // previous blocks list (0=vert,1=horz,2=diag)
#if (NONSERIAL)&DIR_VERT
c_list[0]=(TC**)malloc(bi*sizeof(TC**)); for (unsigned k=0;k<bi;++k) c_list[0][k]=(TC*)mm_alloc(bi-k-1,bj);
#endif
#if (NONSERIAL)&DIR_HORZ
c_list[1]=(TC**)malloc(bj*sizeof(TC**)); for (unsigned k=0;k<bj;++k) c_list[1][k]=(TC*)mm_alloc(bi,bj-k-1);
#endif
blk_precompute2(&blk,c_list[0],c_list[1]);
#if (NONSERIAL)&DIR_VERT
for (unsigned k=0;k<bi;++k) mm_free(c_list[0][k]); free(c_list[0]);
#endif
#if (NONSERIAL)&DIR_HORZ
for (unsigned k=0;k<bj;++k) mm_free(c_list[1][k]); free(c_list[1]);
#endif
#endif
// --------- Block processing
TC* c_prev[3]={NULL,NULL,NULL};
#if (POLYADIC)&(DIR_VERT|DIR_DIAG)
if (bi>0) c_prev[0]=(TC*)mm_alloc(bi-1,bj);
#endif
#if (POLYADIC)&(DIR_HORZ|DIR_DIAG)
if (bj>0) c_prev[1]=(TC*)mm_alloc(bi,bj-1);
#endif
#if (POLYADIC)&DIR_DIAG
if (bi>0 && bj>0) c_prev[2]=(TC*)mm_alloc(bi-1,bj-1);
#endif
blk_solve2(&blk,c_prev[0],c_prev[1],c_prev[2]);
#if (POLYADIC)&(DIR_VERT|DIR_DIAG)
if (bi>0) mm_free(c_prev[0]);
#endif
#if (POLYADIC)&(DIR_HORZ|DIR_DIAG)
if (bj>0) mm_free(c_prev[1]);
#endif
#if (POLYADIC)&DIR_DIAG
if (bi>0 && bj>0) mm_free(c_prev[2]);
#endif
}
}
}