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This is one of those little chores in managing a long-lived C++ project: standard C headers like stdio.h and math.h now have their own place in the C++ standard as resp. cstdio, cmath, and so on. In this branch the #include names are updated for the util/ subdirectory; more branches to follow. C++11 adds cstdint, but to support compilation with the previous standard, that change is left for later.
103 lines
2.2 KiB
C++
103 lines
2.2 KiB
C++
#include "util/probing_hash_table.hh"
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#include "util/murmur_hash.hh"
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#include "util/scoped.hh"
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#define BOOST_TEST_MODULE ProbingHashTableTest
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#include <boost/test/unit_test.hpp>
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#include <boost/scoped_array.hpp>
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#include <boost/functional/hash.hpp>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <stdint.h>
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namespace util {
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namespace {
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struct Entry {
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unsigned char key;
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typedef unsigned char Key;
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unsigned char GetKey() const {
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return key;
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}
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void SetKey(unsigned char to) {
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key = to;
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}
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uint64_t GetValue() const {
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return value;
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}
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uint64_t value;
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};
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typedef ProbingHashTable<Entry, boost::hash<unsigned char> > Table;
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BOOST_AUTO_TEST_CASE(simple) {
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size_t size = Table::Size(10, 1.2);
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boost::scoped_array<char> mem(new char[size]);
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memset(mem.get(), 0, size);
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Table table(mem.get(), size);
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const Entry *i = NULL;
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BOOST_CHECK(!table.Find(2, i));
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Entry to_ins;
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to_ins.key = 3;
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to_ins.value = 328920;
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table.Insert(to_ins);
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BOOST_REQUIRE(table.Find(3, i));
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BOOST_CHECK_EQUAL(3, i->GetKey());
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BOOST_CHECK_EQUAL(static_cast<uint64_t>(328920), i->GetValue());
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BOOST_CHECK(!table.Find(2, i));
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}
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struct Entry64 {
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uint64_t key;
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typedef uint64_t Key;
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Entry64() {}
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explicit Entry64(uint64_t key_in) {
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key = key_in;
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}
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Key GetKey() const { return key; }
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void SetKey(uint64_t to) { key = to; }
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};
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struct MurmurHashEntry64 {
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std::size_t operator()(uint64_t value) const {
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return util::MurmurHash64A(&value, 8);
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}
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};
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typedef ProbingHashTable<Entry64, MurmurHashEntry64> Table64;
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BOOST_AUTO_TEST_CASE(Double) {
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for (std::size_t initial = 19; initial < 30; ++initial) {
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size_t size = Table64::Size(initial, 1.2);
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scoped_malloc mem(MallocOrThrow(size));
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Table64 table(mem.get(), size, std::numeric_limits<uint64_t>::max());
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table.Clear();
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for (uint64_t i = 0; i < 19; ++i) {
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table.Insert(Entry64(i));
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}
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table.CheckConsistency();
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mem.call_realloc(table.DoubleTo());
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table.Double(mem.get());
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table.CheckConsistency();
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for (uint64_t i = 20; i < 40 ; ++i) {
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table.Insert(Entry64(i));
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}
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mem.call_realloc(table.DoubleTo());
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table.Double(mem.get());
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table.CheckConsistency();
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}
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}
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} // namespace
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} // namespace util
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