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Print seed in unit_thread_pool on failure #3355

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merged 4 commits into from
Jul 13, 2022
Merged

Print seed in unit_thread_pool on failure #3355

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edd15a8
changed to one seed.
abigalekim Jul 8, 2022
d415841
printing generator seed
abigalekim Jul 8, 2022
4de6271
thread pool w andrews changes
abigalekim Jul 12, 2022
87f18df
format
abigalekim Jul 12, 2022
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23 changes: 21 additions & 2 deletions tiledb/common/thread_pool/test/unit_thread_pool.cc
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Expand Up @@ -35,14 +35,33 @@
#include <stdint.h>
#include <atomic>
#include <catch.hpp>
#include <cstdio>
#include <iostream>
#include <vector>

#include "tiledb/common/thread_pool.h"
#include "tiledb/sm/misc/cancelable_tasks.h"

// Fixed seed for determinism.
static std::vector<uint64_t> generator_seed_arr = {
0xBE08D299, 0x4E996D11, 0x402A1E10, 0x95379958, 0x22101AA9};
static uint64_t generator_seed = 0;

void set_generator_seed() {
static std::random_device rd;
static std::mt19937 gen(rd());
static std::uniform_int_distribution<> dis(0, generator_seed_arr.size() - 1);
generator_seed = generator_seed_arr[dis(gen)];
}

size_t random_ms(size_t max = 3) {
thread_local static uint64_t generator_seed =
std::hash<std::thread::id>()(std::this_thread::get_id());
// Pick generator seed at random.
if (generator_seed == 0) {
set_generator_seed();
std::string gen_seed_str =
"Generator seed: " + std::to_string(generator_seed);
puts(gen_seed_str.c_str());
}
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thread_local static std::mt19937_64 generator(generator_seed);
std::uniform_int_distribution<size_t> distribution(0, max);
return distribution(generator);
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