328 lines
15 KiB
C++
328 lines
15 KiB
C++
#include <structive/property/property.hpp>
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#include <atomic>
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#include <barrier>
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#include <chrono>
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#include <cstdio>
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#include <cstdlib>
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#include <memory>
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#include <semaphore>
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#include <string>
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#include <thread>
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#include <type_traits>
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using namespace structive;
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struct Test_Tag_Category {};
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template <int Value>
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struct Test_Tag_Attribute {
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using attribute_category = Test_Tag_Category;
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static constexpr bool single_valued = true;
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static constexpr bool inheritable = false;
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static constexpr int value = Value;
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};
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template <int Value>
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inline constexpr Test_Tag_Attribute<Value> test_tag{};
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#define REQUIRE(expression) do { if (!(expression)) { std::fprintf(stderr, "REQUIRE failed: %s:%d: %s\n", __FILE__, __LINE__, #expression); std::abort(); } } while (false)
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struct Device : Property_Object<Device> {
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Device() = default;
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explicit Device(Property_Synchronization synchronization) : Property_Object(std::move(synchronization)) {}
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int temperature{20};
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int pressure{100};
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int min_speed{10};
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int max_speed{100};
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int immutable_id{7};
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};
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template <>
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struct structive::Type_Descriptor<Device> {
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static auto get() {
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return object<Device>(
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synchronization(sync_all_independent, sync_group<&Device::min_speed, &Device::max_speed>("speed_range")),
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field<&Device::temperature>(key<"temperature">, min_value<-50>, max_value<200>, unit<"C">, test_tag<7>),
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field<&Device::pressure>(key<"pressure">),
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field<&Device::min_speed>(key<"minimum_speed">),
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field<&Device::max_speed>(key<"maximum_speed">),
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field<&Device::immutable_id>(key<"immutable_id">, read_only)
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);
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}
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};
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struct Computed_Device : Property_Object<Computed_Device> {
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int min_speed{10};
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int max_speed{100};
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int fixed_offset{5};
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};
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template <>
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struct structive::Type_Descriptor<Computed_Device> {
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static auto get() {
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return object<Computed_Device>(
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synchronization(sync_all_independent, sync_group("speed", "min_speed", "max_speed", "speed_span")),
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field<&Computed_Device::min_speed>(key<"min_speed">),
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field<&Computed_Device::max_speed>(key<"max_speed">),
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field<&Computed_Device::fixed_offset>(key<"fixed_offset">, read_only),
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computed_property<Computed_Device, int>([](const auto& view) {
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return view.template get<&Computed_Device::max_speed>() - view.template get<&Computed_Device::min_speed>() + view.template get<&Computed_Device::fixed_offset>();
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}, key<"speed_span">)
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);
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}
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};
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struct Non_Copyable_Device : Property_Object<Non_Copyable_Device> {
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std::unique_ptr<int> payload{std::make_unique<int>(42)};
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};
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template <>
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struct structive::Type_Descriptor<Non_Copyable_Device> {
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static auto get() {
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return object<Non_Copyable_Device>(field<&Non_Copyable_Device::payload>(key<"payload">));
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}
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};
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struct Lockless_Device : Property_Object<Lockless_Device, No_Lock_Policy> {
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Lockless_Device() = default;
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explicit Lockless_Device(Property_Synchronization synchronization) : Property_Object(std::move(synchronization)) {}
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int left{1};
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int right{2};
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};
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template <>
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struct structive::Type_Descriptor<Lockless_Device> {
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static auto get() {
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return object<Lockless_Device>(
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synchronization(sync_all_independent, sync_group("sum", "left", "right", "sum")),
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field<&Lockless_Device::left>(key<"left">),
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field<&Lockless_Device::right>(key<"right">),
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computed_property<Lockless_Device, int>([](const auto& view) {
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return view.template get<&Lockless_Device::left>() + view.template get<&Lockless_Device::right>();
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}, key<"sum">)
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);
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}
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};
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struct Read_Only_Device : Property_Object<Read_Only_Device> {
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int id{11};
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int version{3};
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int value{9};
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};
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template <>
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struct structive::Type_Descriptor<Read_Only_Device> {
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static auto get() {
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return object<Read_Only_Device>(
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synchronization(sync_all_shared),
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field<&Read_Only_Device::id>(key<"id">, read_only),
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field<&Read_Only_Device::version>(key<"version">, read_only),
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field<&Read_Only_Device::value>(key<"value">)
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);
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}
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};
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struct Pure_Read_Only_Device : Property_Object<Pure_Read_Only_Device> {
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int id{21};
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int version{4};
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};
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template <>
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struct structive::Type_Descriptor<Pure_Read_Only_Device> {
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static auto get() {
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return object<Pure_Read_Only_Device>(
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synchronization(sync_all_shared),
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field<&Pure_Read_Only_Device::id>(key<"id">, read_only),
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field<&Pure_Read_Only_Device::version>(key<"version">, read_only)
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);
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}
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};
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template <class Object>
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concept Can_Write_Immutable = requires(Object& object) {
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object.template write<&Device::immutable_id>(1);
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};
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template <class Object>
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concept Can_Lock_Immutable_Unique = requires(Object& object) {
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object.template lock_unique<&Device::immutable_id>();
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};
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static bool update_speed_range(Device& device, int min_speed, int max_speed) {
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auto guard = device.lock_unique<&Device::min_speed, &Device::max_speed>();
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int old_min = guard.get<&Device::min_speed>();
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int old_max = guard.get<&Device::max_speed>();
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guard.set<&Device::min_speed>(min_speed);
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guard.set<&Device::max_speed>(max_speed);
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if (min_speed <= max_speed) {
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return true;
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}
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guard.set<&Device::min_speed>(old_min);
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guard.set<&Device::max_speed>(old_max);
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return false;
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}
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static void runtime_read_int(void* context, std::size_t, std::string_view, const std::type_info& type, const void* value) {
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REQUIRE(type == typeid(int));
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*static_cast<int*>(context) = *static_cast<const int*>(value);
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}
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int main() {
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static_assert(Property_Described_Object<Device>);
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static_assert(!Can_Write_Immutable<Device>);
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static_assert(!Can_Lock_Immutable_Unique<Device>);
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const auto& schema = type_descriptor<Device>();
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using Schema = type_descriptor_schema_t<Device>;
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static_assert(Valid_Property_Schema<Schema>);
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static_assert(Schema::property_count == 5);
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using Immutable_Property = typename Schema::template property_type<4>;
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static_assert(Immutable_Property::readable);
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static_assert(!Immutable_Property::writable);
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REQUIRE(schema.template property<0>().key() == "temperature");
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REQUIRE(schema.template property<&Device::temperature>().key() == "temperature");
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REQUIRE(schema.template property<&Device::min_speed>().key() == "minimum_speed");
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REQUIRE(schema.template property<&Device::max_speed>().key() == "maximum_speed");
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using Temperature_Property = std::remove_cvref_t<decltype(schema.template property<&Device::temperature>())>;
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static_assert(Temperature_Property::template has_attribute<Test_Tag_Category>);
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REQUIRE(Temperature_Property::template attribute_type<Test_Tag_Category>::value == 7);
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Device device;
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REQUIRE(device.resolved_synchronization().lock_count == 3);
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REQUIRE(device.lock_slot<&Device::immutable_id>() == Resolved_Synchronization_View::unsynchronized_slot);
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REQUIRE(device.temperature == 20);
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device.temperature = 21;
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REQUIRE(device.read<&Device::temperature>() == 21);
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device.write<&Device::temperature>(22);
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REQUIRE(device.temperature == 22);
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REQUIRE(device.read<&Device::immutable_id>() == 7);
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REQUIRE(&device.unsafe_object() == &device);
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REQUIRE(&device.schema() == &schema);
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REQUIRE(device.lock_slot<&Device::min_speed>() == device.lock_slot<&Device::max_speed>());
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REQUIRE(device.lock_slot<&Device::temperature>() != device.lock_slot<&Device::pressure>());
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Device shared_device{property_synchronization(synchronization(sync_all_shared))};
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REQUIRE(shared_device.resolved_synchronization().lock_count == 1);
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REQUIRE(shared_device.lock_slot<&Device::temperature>() == shared_device.lock_slot<&Device::pressure>());
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REQUIRE(shared_device.lock_slot<&Device::pressure>() == shared_device.lock_slot<&Device::min_speed>());
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REQUIRE(shared_device.lock_slot<&Device::immutable_id>() == Resolved_Synchronization_View::unsynchronized_slot);
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Device grouped_device{property_synchronization<Device>(synchronization(sync_all_independent, sync_group<&Device::temperature, &Device::pressure>("environment")))};
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REQUIRE(grouped_device.lock_slot<&Device::temperature>() == grouped_device.lock_slot<&Device::pressure>());
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Device shared_copy{shared_device};
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REQUIRE(shared_copy.lock_slot<&Device::temperature>() == shared_copy.lock_slot<&Device::pressure>());
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Device shared_move{std::move(shared_copy)};
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REQUIRE(shared_move.lock_slot<&Device::temperature>() == shared_move.lock_slot<&Device::pressure>());
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Device assignment_target;
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auto assignment_target_slot = assignment_target.lock_slot<&Device::pressure>();
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assignment_target = shared_device;
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REQUIRE(assignment_target.lock_slot<&Device::pressure>() == assignment_target_slot);
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auto validation = validate_property_value<&Device::temperature>(device.schema(), 500);
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REQUIRE(validation.has_value());
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REQUIRE(validation->code == "max_value");
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REQUIRE(!update_speed_range(device, 200, 100));
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REQUIRE(device.read<&Device::min_speed>() == 10);
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REQUIRE(device.read<&Device::max_speed>() == 100);
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REQUIRE(update_speed_range(device, 20, 120));
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REQUIRE(device.read<&Device::min_speed>() == 20);
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REQUIRE(device.read<&Device::max_speed>() == 120);
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std::size_t schema_visits = 0;
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schema.for_each_property([&](auto, const auto&) {
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++schema_visits;
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});
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REQUIRE(schema_visits == 5);
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std::size_t value_visits = 0;
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device.for_each_readable_locked([&](auto, const auto&, const auto&) {
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++value_visits;
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});
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REQUIRE(value_visits == 5);
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Computed_Device computed;
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REQUIRE(computed.lock_slot<&Computed_Device::fixed_offset>() == Resolved_Synchronization_View::unsynchronized_slot);
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REQUIRE(computed.read_key<"speed_span">() == 95);
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computed.write<&Computed_Device::min_speed>(20);
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REQUIRE(computed.read_key<"speed_span">() == 85);
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Lockless_Device lockless;
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REQUIRE(lockless.read<&Lockless_Device::left>() == 1);
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lockless.write<&Lockless_Device::right>(4);
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REQUIRE(lockless.read_key<"sum">() == 5);
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auto lockless_guard = lockless.lock_shared<&Lockless_Device::left, &Lockless_Device::right>();
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REQUIRE(lockless_guard.get<&Lockless_Device::left>() == 1);
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REQUIRE(lockless_guard.get<&Lockless_Device::right>() == 4);
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Non_Copyable_Device non_copyable;
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bool non_copyable_visited = false;
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non_copyable.for_each_readable_locked([&](auto, const auto&, const auto& value) {
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REQUIRE(*value == 42);
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non_copyable_visited = true;
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});
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REQUIRE(non_copyable_visited);
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Property_Object_Base& erased = device;
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REQUIRE(erased.runtime_object_type() == typeid(Device));
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REQUIRE(erased.runtime_property_count() == 5);
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int runtime_value = 0;
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REQUIRE(erased.runtime_read("temperature", &runtime_value, &runtime_read_int) == Runtime_Access_Result::ok);
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REQUIRE(runtime_value == 22);
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REQUIRE(erased.runtime_read("immutable_id", &runtime_value, &runtime_read_int) == Runtime_Access_Result::ok);
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REQUIRE(runtime_value == 7);
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int runtime_write_value = 35;
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REQUIRE(erased.runtime_write("temperature", typeid(int), &runtime_write_value) == Runtime_Access_Result::ok);
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REQUIRE(device.temperature == 35);
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REQUIRE(erased.runtime_write("immutable_id", typeid(int), &runtime_write_value) == Runtime_Access_Result::not_writable);
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double wrong_type = 1.0;
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REQUIRE(erased.runtime_write("temperature", typeid(double), &wrong_type) == Runtime_Access_Result::type_mismatch);
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REQUIRE(erased.runtime_write("missing", typeid(int), &runtime_write_value) == Runtime_Access_Result::unknown_property);
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Read_Only_Device read_only_device;
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REQUIRE(read_only_device.resolved_synchronization().lock_count == 1);
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REQUIRE(read_only_device.lock_slot<&Read_Only_Device::id>() == Resolved_Synchronization_View::unsynchronized_slot);
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REQUIRE(read_only_device.lock_slot<&Read_Only_Device::version>() == Resolved_Synchronization_View::unsynchronized_slot);
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REQUIRE(read_only_device.lock_slot<&Read_Only_Device::value>() == 0);
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Pure_Read_Only_Device pure_read_only;
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REQUIRE(pure_read_only.resolved_synchronization().lock_count == 0);
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REQUIRE(pure_read_only.lock_slot<&Pure_Read_Only_Device::id>() == Resolved_Synchronization_View::unsynchronized_slot);
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REQUIRE(pure_read_only.lock_slot<&Pure_Read_Only_Device::version>() == Resolved_Synchronization_View::unsynchronized_slot);
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REQUIRE(pure_read_only.read<&Pure_Read_Only_Device::id>() == 21);
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REQUIRE(pure_read_only.read<&Pure_Read_Only_Device::version>() == 4);
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Property_Object_Base& read_only_erased = read_only_device;
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std::binary_semaphore read_only_done{0};
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std::jthread read_only_reader;
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{
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auto guard = read_only_device.lock_unique<&Read_Only_Device::value>();
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read_only_reader = std::jthread([&] {
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int value = 0;
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REQUIRE(read_only_erased.runtime_read("id", &value, &runtime_read_int) == Runtime_Access_Result::ok);
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REQUIRE(value == 11);
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read_only_done.release();
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});
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REQUIRE(read_only_done.try_acquire_for(std::chrono::milliseconds(100)));
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}
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read_only_reader.join();
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std::binary_semaphore runtime_blocked_done{0};
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std::jthread runtime_writer;
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{
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auto guard = device.lock_unique<&Device::temperature>();
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runtime_writer = std::jthread([&] {
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int value = 36;
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REQUIRE(erased.runtime_write("temperature", typeid(int), &value) == Runtime_Access_Result::ok);
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runtime_blocked_done.release();
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});
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REQUIRE(!runtime_blocked_done.try_acquire_for(std::chrono::milliseconds(20)));
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}
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REQUIRE(runtime_blocked_done.try_acquire_for(std::chrono::seconds(2)));
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runtime_writer.join();
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REQUIRE(device.read<&Device::temperature>() == 36);
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std::binary_semaphore independent_done{0};
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{
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auto guard = device.lock_unique({"temperature"});
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std::jthread writer([&] {
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device.write<&Device::pressure>(200);
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independent_done.release();
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});
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REQUIRE(independent_done.try_acquire_for(std::chrono::seconds(2)));
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}
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bool dynamic_read_only_unique_rejected = false;
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try {
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auto guard = device.lock_unique({"immutable_id"});
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(void) guard;
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} catch (const std::invalid_argument&) {
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dynamic_read_only_unique_rejected = true;
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}
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REQUIRE(dynamic_read_only_unique_rejected);
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std::barrier gate(2);
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std::atomic<int> completed{0};
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std::jthread first([&] {
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gate.arrive_and_wait();
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auto guard = device.lock_unique({"temperature", "pressure"});
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guard.set<&Device::temperature>(40);
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guard.set<&Device::pressure>(140);
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completed.fetch_add(1, std::memory_order_release);
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});
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std::jthread second([&] {
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gate.arrive_and_wait();
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auto guard = device.lock_unique({"pressure", "temperature"});
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guard.set<&Device::pressure>(141);
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guard.set<&Device::temperature>(41);
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completed.fetch_add(1, std::memory_order_release);
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});
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first.join();
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second.join();
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REQUIRE(completed.load(std::memory_order_acquire) == 2);
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Device copied = device;
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REQUIRE(copied.temperature == device.temperature);
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copied.write<&Device::temperature>(99);
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REQUIRE(device.read<&Device::temperature>() != copied.read<&Device::temperature>());
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return 0;
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}
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