// Write the compact table
void CompactHashtableWriter::dump(char** top, char* end) {
NumberSeq summary;
char* old_top = *top;
juint* p = (juint*)(*top);
uintx base_address = uintx(MetaspaceShared::shared_rs()->base());
*p++ = high(base_address);
*p++ = low (base_address); // base address
*p++ = _num_entries; // number of entries in the table
*p++ = _num_buckets; // number of buckets in the table
juint* first_bucket = NULL;
juint* compact_table = dump_table(p, &first_bucket, &summary);
juint* bucket_end = dump_buckets(compact_table, first_bucket, &summary);
assert(bucket_end <= (juint*)end, "cannot write past end");
*top = (char*)bucket_end;
if (PrintSharedSpaces) {
double avg_cost = 0.0;
if (_num_entries > 0) {
avg_cost = double(_required_bytes)/double(_num_entries);
}
tty->print_cr("Shared %s table stats -------- base: " PTR_FORMAT, _table_name, (intptr_t)base_address);
tty->print_cr("Number of entries : %9d", _num_entries);
tty->print_cr("Total bytes used : %9d", (int)((*top) - old_top));
tty->print_cr("Average bytes per entry : %9.3f", avg_cost);
tty->print_cr("Average bucket size : %9.3f", summary.avg());
tty->print_cr("Variance of bucket size : %9.3f", summary.variance());
tty->print_cr("Std. dev. of bucket size: %9.3f", summary.sd());
tty->print_cr("Maximum bucket size : %9d", (int)summary.maximum());
}
}
// Write the compact table
void CompactHashtableWriter::dump(SimpleCompactHashtable *cht, const char* table_name) {
NumberSeq summary;
allocate_table();
dump_table(&summary);
int table_bytes = _stats->bucket_bytes + _stats->hashentry_bytes;
address base_address = address(MetaspaceShared::shared_rs()->base());
cht->init(base_address, _num_entries, _num_buckets,
_compact_buckets->data(), _compact_entries->data());
if (PrintSharedSpaces) {
double avg_cost = 0.0;
if (_num_entries > 0) {
avg_cost = double(table_bytes)/double(_num_entries);
}
tty->print_cr("Shared %s table stats -------- base: " PTR_FORMAT,
table_name, (intptr_t)base_address);
tty->print_cr("Number of entries : %9d", _num_entries);
tty->print_cr("Total bytes used : %9d", table_bytes);
tty->print_cr("Average bytes per entry : %9.3f", avg_cost);
tty->print_cr("Average bucket size : %9.3f", summary.avg());
tty->print_cr("Variance of bucket size : %9.3f", summary.variance());
tty->print_cr("Std. dev. of bucket size: %9.3f", summary.sd());
tty->print_cr("Empty buckets : %9d", _num_empty_buckets);
tty->print_cr("Value_Only buckets : %9d", _num_value_only_buckets);
tty->print_cr("Other buckets : %9d", _num_other_buckets);
}
}