quickerNES/extern/phmap/examples/allmaps.cc

76 lines
2.8 KiB
C++

// Silly program just to test the natvis file for Visual Studio
// ------------------------------------------------------------
#include <string>
#include "parallel_hashmap/phmap.h"
template<class Set, class F>
void test_set(const F &f)
{
Set s;
typename Set::iterator it;
for (int i=0; i<100; ++i)
s.insert(f(i));
it = s.begin();
++it;
it = s.end();
it = s.begin();
while(it != s.end())
++it;
it = s.begin();
}
int main(int, char **)
{
using namespace std;
auto make_int = [](int i) { return i; };
auto make_string = [](int i) { return std::to_string(i); };
auto make_2int = [](int i) { return std::make_pair(i, i); };
auto make_2string = [](int i) { return std::make_pair(std::to_string(i), std::to_string(i)); };
test_set<phmap::flat_hash_set<int>>(make_int);
test_set<phmap::flat_hash_set<string>>(make_string);
test_set<phmap::node_hash_set<int>>(make_int);
test_set<phmap::node_hash_set<string>>(make_string);
test_set<phmap::flat_hash_map<int, int>>(make_2int);
test_set<phmap::flat_hash_map<string, string>>(make_2string);
test_set<phmap::node_hash_map<int, int>>(make_2int);
test_set<phmap::node_hash_map<string, string>>(make_2string);
test_set<phmap::parallel_flat_hash_set<int>>(make_int);
test_set<phmap::parallel_flat_hash_set<string>>(make_string);
test_set<phmap::parallel_node_hash_set<int>>(make_int);
test_set<phmap::parallel_node_hash_set<string>>(make_string);
test_set<phmap::parallel_flat_hash_map<int, int>>(make_2int);
test_set<phmap::parallel_flat_hash_map<string, string>>(make_2string);
test_set<phmap::parallel_node_hash_map<int, int>>(make_2int);
test_set<phmap::parallel_node_hash_map<string, string>>(make_2string);
// example of using default parameters in order to specify the mutex type.
//
// Please be aware that the iterators returned (by find for example) cannot
// be safely read in a multithreaded environment. Instead use if_contains(),
// which passes a reference value to the callback while holding the submap lock.
// Similarly, write access can be done safely using modify_if, try_emplace_l
// or lazy_emplace_l.
// ----------------------------------------------------------------------------
using Map = phmap::parallel_flat_hash_map<std::size_t, std::size_t,
std::hash<size_t>,
std::equal_to<size_t>,
std::allocator<std::pair<const size_t, size_t>>,
4,
std::mutex>;
auto make_2size_t = [](size_t i) { return std::make_pair(i, i); };
test_set<Map>(make_2size_t);
}