File size: 2,781 Bytes
985c397 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 | #include "catch2/catch.hpp"
#include <fastsignals/signal.h>
#include <array>
#include <mutex>
#include <random>
#include <vector>
#include <thread>
using namespace fastsignals;
namespace
{
using string_signal = signal<void(std::string)>;
using string_slot = string_signal::slot_type;
using void_signal = signal<void()>;
using void_slot = void_signal::slot_type;
class named_entity
{
public:
std::string name() const
{
std::lock_guard lock(m_nameMutex);
return m_name;
}
void fire_changed(std::string value)
{
bool fire = false;
{
std::lock_guard lock(m_nameMutex);
if (m_name != value)
{
m_name = std::move(value);
fire = true;
}
}
if (fire)
{
m_nameChanged(value);
}
}
connection on_name_changed(string_slot slot)
{
return m_nameChanged.connect(std::move(slot));
}
private:
mutable std::mutex m_nameMutex;
std::string m_name;
signal<void(std::string)> m_nameChanged;
};
unsigned get_next_seed()
{
static std::minstd_rand seedEngine(777);
return seedEngine();
}
size_t get_random_index(size_t size)
{
thread_local std::minstd_rand disconnectRandomEngine{ get_next_seed() };
std::uniform_int_distribution<size_t> disconnectIndexDistribution{ 0, size - 1 };
return disconnectIndexDistribution(disconnectRandomEngine);
}
} // namespace
TEST_CASE("Can work in a few threads", "[signal]")
{
constexpr unsigned fireThreadCount = 8;
constexpr unsigned signalsCount = 7;
constexpr unsigned fireCountPerThread = 100'000;
constexpr unsigned connectCallsCount = 80'000;
constexpr unsigned totalRunCount = 10;
for (unsigned i = 0; i < totalRunCount; ++i)
{
std::array<void_signal, signalsCount> signals;
std::mutex connectionsMutex;
std::vector<connection> connections;
connections.reserve(connectCallsCount);
std::vector<std::thread> threads;
auto slot = [&] {
std::lock_guard lock(connectionsMutex);
if (!connections.empty())
{
const size_t index = get_random_index(connections.size());
connections.at(index).disconnect();
}
};
threads.emplace_back([&] {
for (unsigned cci = 0; cci < connectCallsCount; ++cci)
{
const size_t index = get_random_index(signalsCount);
connection conn = signals.at(index).connect(slot);
{
std::lock_guard lock(connectionsMutex);
connections.emplace_back(conn);
}
}
});
for (unsigned fti = 0; fti < fireThreadCount; ++fti)
{
threads.emplace_back([&] {
for (unsigned fi = 0; fi < fireCountPerThread; ++fi)
{
const size_t index = get_random_index(signalsCount);
signals.at(index)();
}
});
}
for (auto& thread : threads)
{
thread.join();
}
}
}
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