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// Copyright 2016 Dolphin Emulator Project / 2017 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include <catch2/catch.hpp>
#include <array>
#include <bitset>
#include <string>
#include "common/file_util.h"
#include "core/core.h"
#include "core/core_timing.h"
// Numbers are chosen randomly to make sure the correct one is given.
static constexpr std::array<u64, 5> CB_IDS{{42, 144, 93, 1026, UINT64_C(0xFFFF7FFFF7FFFF)}};
static constexpr int MAX_SLICE_LENGTH = 20000; // Copied from CoreTiming internals
static std::bitset<CB_IDS.size()> callbacks_ran_flags;
static u64 expected_callback = 0;
static s64 lateness = 0;
template <unsigned int IDX>
void CallbackTemplate(u64 userdata, s64 cycles_late) {
static_assert(IDX < CB_IDS.size(), "IDX out of range");
callbacks_ran_flags.set(IDX);
REQUIRE(CB_IDS[IDX] == userdata);
REQUIRE(CB_IDS[IDX] == expected_callback);
REQUIRE(lateness == cycles_late);
}
class ScopeInit final {
public:
ScopeInit() {
Core::Timing::Init();
}
~ScopeInit() {
Core::Timing::Shutdown();
}
};
static void AdvanceAndCheck(u32 idx, int downcount, int expected_lateness = 0,
int cpu_downcount = 0) {
callbacks_ran_flags = 0;
expected_callback = CB_IDS[idx];
lateness = expected_lateness;
// Pretend we executed X cycles of instructions.
Core::Timing::AddTicks(Core::Timing::GetDowncount() - cpu_downcount);
Core::Timing::Advance();
REQUIRE(decltype(callbacks_ran_flags)().set(idx) == callbacks_ran_flags);
REQUIRE(downcount == Core::Timing::GetDowncount());
}
TEST_CASE("CoreTiming[BasicOrder]", "[core]") {
ScopeInit guard;
Core::Timing::EventType* cb_a = Core::Timing::RegisterEvent("callbackA", CallbackTemplate<0>);
Core::Timing::EventType* cb_b = Core::Timing::RegisterEvent("callbackB", CallbackTemplate<1>);
Core::Timing::EventType* cb_c = Core::Timing::RegisterEvent("callbackC", CallbackTemplate<2>);
Core::Timing::EventType* cb_d = Core::Timing::RegisterEvent("callbackD", CallbackTemplate<3>);
Core::Timing::EventType* cb_e = Core::Timing::RegisterEvent("callbackE", CallbackTemplate<4>);
// Enter slice 0
Core::Timing::Advance();
// D -> B -> C -> A -> E
Core::Timing::ScheduleEvent(1000, cb_a, CB_IDS[0]);
REQUIRE(1000 == Core::Timing::GetDowncount());
Core::Timing::ScheduleEvent(500, cb_b, CB_IDS[1]);
REQUIRE(500 == Core::Timing::GetDowncount());
Core::Timing::ScheduleEvent(800, cb_c, CB_IDS[2]);
REQUIRE(500 == Core::Timing::GetDowncount());
Core::Timing::ScheduleEvent(100, cb_d, CB_IDS[3]);
REQUIRE(100 == Core::Timing::GetDowncount());
Core::Timing::ScheduleEvent(1200, cb_e, CB_IDS[4]);
REQUIRE(100 == Core::Timing::GetDowncount());
AdvanceAndCheck(3, 400);
AdvanceAndCheck(1, 300);
AdvanceAndCheck(2, 200);
AdvanceAndCheck(0, 200);
AdvanceAndCheck(4, MAX_SLICE_LENGTH);
}
TEST_CASE("CoreTiming[Threadsave]", "[core]") {
ScopeInit guard;
Core::Timing::EventType* cb_a = Core::Timing::RegisterEvent("callbackA", CallbackTemplate<0>);
Core::Timing::EventType* cb_b = Core::Timing::RegisterEvent("callbackB", CallbackTemplate<1>);
Core::Timing::EventType* cb_c = Core::Timing::RegisterEvent("callbackC", CallbackTemplate<2>);
Core::Timing::EventType* cb_d = Core::Timing::RegisterEvent("callbackD", CallbackTemplate<3>);
Core::Timing::EventType* cb_e = Core::Timing::RegisterEvent("callbackE", CallbackTemplate<4>);
// Enter slice 0
Core::Timing::Advance();
// D -> B -> C -> A -> E
Core::Timing::ScheduleEventThreadsafe(1000, cb_a, CB_IDS[0]);
// Manually force since ScheduleEventThreadsafe doesn't call it
Core::Timing::ForceExceptionCheck(1000);
REQUIRE(1000 == Core::Timing::GetDowncount());
Core::Timing::ScheduleEventThreadsafe(500, cb_b, CB_IDS[1]);
// Manually force since ScheduleEventThreadsafe doesn't call it
Core::Timing::ForceExceptionCheck(500);
REQUIRE(500 == Core::Timing::GetDowncount());
Core::Timing::ScheduleEventThreadsafe(800, cb_c, CB_IDS[2]);
// Manually force since ScheduleEventThreadsafe doesn't call it
Core::Timing::ForceExceptionCheck(800);
REQUIRE(500 == Core::Timing::GetDowncount());
Core::Timing::ScheduleEventThreadsafe(100, cb_d, CB_IDS[3]);
// Manually force since ScheduleEventThreadsafe doesn't call it
Core::Timing::ForceExceptionCheck(100);
REQUIRE(100 == Core::Timing::GetDowncount());
Core::Timing::ScheduleEventThreadsafe(1200, cb_e, CB_IDS[4]);
// Manually force since ScheduleEventThreadsafe doesn't call it
Core::Timing::ForceExceptionCheck(1200);
REQUIRE(100 == Core::Timing::GetDowncount());
AdvanceAndCheck(3, 400);
AdvanceAndCheck(1, 300);
AdvanceAndCheck(2, 200);
AdvanceAndCheck(0, 200);
AdvanceAndCheck(4, MAX_SLICE_LENGTH);
}
namespace SharedSlotTest {
static unsigned int counter = 0;
template <unsigned int ID>
void FifoCallback(u64 userdata, s64 cycles_late) {
static_assert(ID < CB_IDS.size(), "ID out of range");
callbacks_ran_flags.set(ID);
REQUIRE(CB_IDS[ID] == userdata);
REQUIRE(ID == counter);
REQUIRE(lateness == cycles_late);
++counter;
}
} // namespace SharedSlotTest
TEST_CASE("CoreTiming[SharedSlot]", "[core]") {
using namespace SharedSlotTest;
ScopeInit guard;
Core::Timing::EventType* cb_a = Core::Timing::RegisterEvent("callbackA", FifoCallback<0>);
Core::Timing::EventType* cb_b = Core::Timing::RegisterEvent("callbackB", FifoCallback<1>);
Core::Timing::EventType* cb_c = Core::Timing::RegisterEvent("callbackC", FifoCallback<2>);
Core::Timing::EventType* cb_d = Core::Timing::RegisterEvent("callbackD", FifoCallback<3>);
Core::Timing::EventType* cb_e = Core::Timing::RegisterEvent("callbackE", FifoCallback<4>);
Core::Timing::ScheduleEvent(1000, cb_a, CB_IDS[0]);
Core::Timing::ScheduleEvent(1000, cb_b, CB_IDS[1]);
Core::Timing::ScheduleEvent(1000, cb_c, CB_IDS[2]);
Core::Timing::ScheduleEvent(1000, cb_d, CB_IDS[3]);
Core::Timing::ScheduleEvent(1000, cb_e, CB_IDS[4]);
// Enter slice 0
Core::Timing::Advance();
REQUIRE(1000 == Core::Timing::GetDowncount());
callbacks_ran_flags = 0;
counter = 0;
lateness = 0;
Core::Timing::AddTicks(Core::Timing::GetDowncount());
Core::Timing::Advance();
REQUIRE(MAX_SLICE_LENGTH == Core::Timing::GetDowncount());
REQUIRE(0x1FULL == callbacks_ran_flags.to_ullong());
}
TEST_CASE("Core::Timing[PredictableLateness]", "[core]") {
ScopeInit guard;
Core::Timing::EventType* cb_a = Core::Timing::RegisterEvent("callbackA", CallbackTemplate<0>);
Core::Timing::EventType* cb_b = Core::Timing::RegisterEvent("callbackB", CallbackTemplate<1>);
// Enter slice 0
Core::Timing::Advance();
Core::Timing::ScheduleEvent(100, cb_a, CB_IDS[0]);
Core::Timing::ScheduleEvent(200, cb_b, CB_IDS[1]);
AdvanceAndCheck(0, 90, 10, -10); // (100 - 10)
AdvanceAndCheck(1, MAX_SLICE_LENGTH, 50, -50);
}
namespace ChainSchedulingTest {
static int reschedules = 0;
static void RescheduleCallback(u64 userdata, s64 cycles_late) {
--reschedules;
REQUIRE(reschedules >= 0);
REQUIRE(lateness == cycles_late);
if (reschedules > 0) {
Core::Timing::ScheduleEvent(1000, reinterpret_cast<Core::Timing::EventType*>(userdata),
userdata);
}
}
} // namespace ChainSchedulingTest
TEST_CASE("CoreTiming[ChainScheduling]", "[core]") {
using namespace ChainSchedulingTest;
ScopeInit guard;
Core::Timing::EventType* cb_a = Core::Timing::RegisterEvent("callbackA", CallbackTemplate<0>);
Core::Timing::EventType* cb_b = Core::Timing::RegisterEvent("callbackB", CallbackTemplate<1>);
Core::Timing::EventType* cb_c = Core::Timing::RegisterEvent("callbackC", CallbackTemplate<2>);
Core::Timing::EventType* cb_rs =
Core::Timing::RegisterEvent("callbackReschedule", RescheduleCallback);
// Enter slice 0
Core::Timing::Advance();
Core::Timing::ScheduleEvent(800, cb_a, CB_IDS[0]);
Core::Timing::ScheduleEvent(1000, cb_b, CB_IDS[1]);
Core::Timing::ScheduleEvent(2200, cb_c, CB_IDS[2]);
Core::Timing::ScheduleEvent(1000, cb_rs, reinterpret_cast<u64>(cb_rs));
REQUIRE(800 == Core::Timing::GetDowncount());
reschedules = 3;
AdvanceAndCheck(0, 200); // cb_a
AdvanceAndCheck(1, 1000); // cb_b, cb_rs
REQUIRE(2 == reschedules);
Core::Timing::AddTicks(Core::Timing::GetDowncount());
Core::Timing::Advance(); // cb_rs
REQUIRE(1 == reschedules);
REQUIRE(200 == Core::Timing::GetDowncount());
AdvanceAndCheck(2, 800); // cb_c
Core::Timing::AddTicks(Core::Timing::GetDowncount());
Core::Timing::Advance(); // cb_rs
REQUIRE(0 == reschedules);
REQUIRE(MAX_SLICE_LENGTH == Core::Timing::GetDowncount());
}
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