public void insert_entry(ulong input_pc, StrideEntry input_stride_entry)
{
for (int i = table_size - 1; i > 0; i--)
{
valid[i] = valid[i - 1];
pc[i] = pc[i - 1];
stride_entries[i] = stride_entries[i - 1];
}
valid[0] = true;
pc[0] = input_pc;
stride_entries[0] = input_stride_entry;
}
public void insert_entry(ulong input_pc, StrideEntry input_stride_entry)
{
for (int i = table_size-1; i > 0; i --)
{
valid[i] = valid[i-1];
pc[i] = pc[i-1];
stride_entries[i] = stride_entries[i-1];
}
valid[0] = true;
pc[0] = input_pc;
stride_entries[0] = input_stride_entry;
}
public void reorder_entries(int hit_position)
{
StrideEntry hit_position_entry = stride_entries[hit_position];
bool hit_position_valid = valid[hit_position];
ulong hit_position_pc = pc[hit_position];
for (int i = hit_position; i > 0; i--)
{
valid[i] = valid[i - 1];
pc[i] = pc[i - 1];
stride_entries[i] = stride_entries[i - 1];
}
valid[0] = hit_position_valid;
pc[0] = hit_position_pc;
stride_entries[0] = hit_position_entry;
}
public void process_request(int pid, ulong block_addr, ulong input_pc)
{
if (!pc_present(input_pc))
{
StrideEntry new_stride_entry = new StrideEntry();
new_stride_entry.block_addr = block_addr;
new_stride_entry.trained = false;
new_stride_entry.stride = 0;
new_stride_entry.train_hits = 0;
insert_entry(input_pc, new_stride_entry);
return;
}
int hit_position = entry_position(input_pc);
int current_stride = (int)(block_addr - stride_entries[hit_position].block_addr);
if (current_stride != stride_entries[hit_position].stride)
{
stride_entries[hit_position].stride = current_stride;
stride_entries[hit_position].trained = false;
stride_entries[hit_position].train_hits = 0;
}
stride_entries[hit_position].block_addr = block_addr;
if (!stride_entries[hit_position].trained)
{
stride_entries[hit_position].train_hits++;
stride_entries[hit_position].prefetch_block_addr = block_addr;
}
if (stride_entries[hit_position].train_hits >= num_trains)
{
stride_entries[hit_position].trained = true;
}
if (stride_entries[hit_position].stride == 0)
{
return;
}
if (stride_entries[hit_position].trained == true)
{
ulong max_block_address = stride_entries[hit_position].block_addr + (ulong)((distance + 1) * stride_entries[hit_position].stride);
int max_prefetches = (int)(((int)max_block_address - (int)stride_entries[hit_position].prefetch_block_addr) / stride_entries[hit_position].stride);
int num_prefetches = (max_prefetches > degree) ? degree : max_prefetches;
for (int i = 0; i < num_prefetches; i++)
{
stride_entries[hit_position].prefetch_block_addr += (ulong)stride_entries[hit_position].stride;
Req new_prefetch = create_new_prefetch_req(pid, stride_entries[hit_position].prefetch_block_addr);
bool mctrl_ok = insert_mctrl(new_prefetch);
if (!mctrl_ok)
{
RequestPool.enpool(new_prefetch);
}
else
{
Stat.procs[new_prefetch.pid].num_prefetches.Collect();
};
}
}
return;
}
public void process_request(int pid, ulong block_addr, ulong input_pc)
{
if (!pc_present(input_pc)) {
StrideEntry new_stride_entry = new StrideEntry();
new_stride_entry.block_addr = block_addr;
new_stride_entry.trained = false;
new_stride_entry.stride = 0;
new_stride_entry.train_hits = 0;
insert_entry(input_pc,new_stride_entry);
return;
}
int hit_position = entry_position(input_pc);
int current_stride = (int)(block_addr - stride_entries[hit_position].block_addr);
if (current_stride != stride_entries[hit_position].stride)
{
stride_entries[hit_position].stride = current_stride;
stride_entries[hit_position].trained = false;
stride_entries[hit_position].train_hits = 0;
}
stride_entries[hit_position].block_addr = block_addr;
if (!stride_entries[hit_position].trained) {
stride_entries[hit_position].train_hits ++;
stride_entries[hit_position].prefetch_block_addr = block_addr;
}
if (stride_entries[hit_position].train_hits >= num_trains) stride_entries[hit_position].trained = true;
if (stride_entries[hit_position].stride == 0) return;
if (stride_entries[hit_position].trained == true)
{
ulong max_block_address = stride_entries[hit_position].block_addr + (ulong)((distance + 1) * stride_entries[hit_position].stride);
int max_prefetches = (int)(((int)max_block_address - (int)stride_entries[hit_position].prefetch_block_addr)/stride_entries[hit_position].stride);
int num_prefetches = (max_prefetches > degree) ? degree : max_prefetches;
for (int i = 0; i < num_prefetches; i ++)
{
stride_entries[hit_position].prefetch_block_addr += (ulong)stride_entries[hit_position].stride;
Req new_prefetch = create_new_prefetch_req(pid, stride_entries[hit_position].prefetch_block_addr);
bool mctrl_ok = insert_mctrl(new_prefetch);
if (!mctrl_ok) RequestPool.enpool(new_prefetch);
else Stat.procs[new_prefetch.pid].num_prefetches.Collect();;
}
}
return;
}
