65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
#include "common.h"
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constexpr size_t THREADS_NO = std::min(max_no_threads, 8);
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constexpr size_t key_range = 1e4;
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constexpr size_t op_per_thread = 1e5;
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// Depending on value there is a possiblity of numerical overflow
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constexpr size_t max_number = 10;
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constexpr size_t no_insert_for_one_delete = 2;
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// TODO: document the test
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// This test checks remove method under pressure.
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// Each thread removes random data. So removes are joint.
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// Calls of remove method are interleaved with insert calls.
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int main() {
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init_log();
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memory_check(THREADS_NO, [] {
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map_t skiplist;
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auto futures = run<std::pair<long long, long long>>(
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THREADS_NO, skiplist, [](auto acc, auto index) {
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auto rand = rand_gen(key_range);
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auto rand_op = rand_gen_bool(no_insert_for_one_delete);
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long long downcount = op_per_thread;
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long long sum = 0;
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long long count = 0;
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do {
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auto num = rand();
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auto data = num % max_number;
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if (rand_op()) {
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if (acc.remove(num)) {
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sum -= data;
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downcount--;
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count--;
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}
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} else {
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if (acc.insert(num, data).second) {
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sum += data;
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downcount--;
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count++;
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}
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}
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} while (downcount > 0);
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return std::pair<long long, long long>(sum, count);
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});
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auto accessor = skiplist.access();
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long long sums = 0;
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long long counters = 0;
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for (auto &data : collect(futures)) {
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sums += data.second.first;
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counters += data.second.second;
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}
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for (auto &e : accessor) {
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sums -= e.second;
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}
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permanent_assert(sums == 0, "Aproximetly Same values are present");
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check_size<map_t>(accessor, counters);
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check_order<map_t>(accessor);
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});
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}
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