memgraph/tests/concurrent/sl_insert_competetive.cpp
florijan a01c26439b Clean SkipList up
Summary:
- Removed a lot of stuff that was incorrect and/or unnecessary
- Fixed const-correctness in the skiplist family

Reviewers: dgleich, teon.banek, buda

Reviewed By: dgleich

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D1351
2018-04-11 10:08:20 +02:00

42 lines
1.2 KiB
C++

#include "common.hpp"
constexpr size_t THREADS_NO = std::min(max_no_threads, 8);
constexpr size_t elems_per_thread = 100000;
// TODO: document the test
// This test checks insert_unique method under pressure.
// Threads will try to insert keys in the same order.
// This will force threads to compete intensly with each other.
// Test checks for missing data and changed/overwriten data.
int main(int, char **argv) {
google::InitGoogleLogging(argv[0]);
map_t skiplist;
auto futures =
run<std::vector<size_t>>(THREADS_NO, skiplist, [](auto acc, auto index) {
long long downcount = elems_per_thread;
std::vector<size_t> owned;
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wfor-loop-analysis"
for (int i = 0; downcount > 0; i++) {
if (acc.insert(i, index).second) {
downcount--;
owned.push_back(i);
}
}
#pragma GCC diagnostic pop
check_present_same(acc, index, owned);
return owned;
});
auto accessor = skiplist.access();
for (auto &owned : collect(futures)) {
check_present_same(accessor, owned);
}
check_size(accessor, THREADS_NO * elems_per_thread);
check_order(accessor);
}