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-rw-r--r--src/common/fiber.cpp32
-rw-r--r--src/common/fiber.h19
-rw-r--r--src/tests/CMakeLists.txt1
-rw-r--r--src/tests/common/fibers.cpp214
4 files changed, 247 insertions, 19 deletions
diff --git a/src/common/fiber.cpp b/src/common/fiber.cpp
index eb59f1aa9..a2c0401c4 100644
--- a/src/common/fiber.cpp
+++ b/src/common/fiber.cpp
@@ -3,18 +3,21 @@
// Refer to the license.txt file included.
#include "common/fiber.h"
+#ifdef _MSC_VER
+#include <windows.h>
+#else
+#include <boost/context/detail/fcontext.hpp>
+#endif
namespace Common {
#ifdef _MSC_VER
-#include <windows.h>
struct Fiber::FiberImpl {
LPVOID handle = nullptr;
};
-void Fiber::_start([[maybe_unused]] void* parameter) {
- guard.lock();
+void Fiber::start() {
if (previous_fiber) {
previous_fiber->guard.unlock();
previous_fiber = nullptr;
@@ -22,10 +25,10 @@ void Fiber::_start([[maybe_unused]] void* parameter) {
entry_point(start_parameter);
}
-static void __stdcall FiberStartFunc(LPVOID lpFiberParameter)
+void __stdcall Fiber::FiberStartFunc(void* fiber_parameter)
{
- auto fiber = static_cast<Fiber *>(lpFiberParameter);
- fiber->_start(nullptr);
+ auto fiber = static_cast<Fiber *>(fiber_parameter);
+ fiber->start();
}
Fiber::Fiber(std::function<void(void*)>&& entry_point_func, void* start_parameter)
@@ -74,30 +77,26 @@ std::shared_ptr<Fiber> Fiber::ThreadToFiber() {
#else
-#include <boost/context/detail/fcontext.hpp>
-
constexpr std::size_t default_stack_size = 1024 * 1024 * 4; // 4MB
-struct Fiber::FiberImpl {
- boost::context::detail::fcontext_t context;
+struct alignas(64) Fiber::FiberImpl {
std::array<u8, default_stack_size> stack;
+ boost::context::detail::fcontext_t context;
};
-void Fiber::_start(void* parameter) {
- guard.lock();
- boost::context::detail::transfer_t* transfer = static_cast<boost::context::detail::transfer_t*>(parameter);
+void Fiber::start(boost::context::detail::transfer_t& transfer) {
if (previous_fiber) {
- previous_fiber->impl->context = transfer->fctx;
+ previous_fiber->impl->context = transfer.fctx;
previous_fiber->guard.unlock();
previous_fiber = nullptr;
}
entry_point(start_parameter);
}
-static void FiberStartFunc(boost::context::detail::transfer_t transfer)
+void Fiber::FiberStartFunc(boost::context::detail::transfer_t transfer)
{
auto fiber = static_cast<Fiber *>(transfer.data);
- fiber->_start(&transfer);
+ fiber->start(transfer);
}
Fiber::Fiber(std::function<void(void*)>&& entry_point_func, void* start_parameter)
@@ -139,6 +138,7 @@ void Fiber::YieldTo(std::shared_ptr<Fiber> from, std::shared_ptr<Fiber> to) {
std::shared_ptr<Fiber> Fiber::ThreadToFiber() {
std::shared_ptr<Fiber> fiber = std::shared_ptr<Fiber>{new Fiber()};
+ fiber->guard.lock();
fiber->is_thread_fiber = true;
return fiber;
}
diff --git a/src/common/fiber.h b/src/common/fiber.h
index ab44905cf..812d6644a 100644
--- a/src/common/fiber.h
+++ b/src/common/fiber.h
@@ -10,6 +10,12 @@
#include "common/common_types.h"
#include "common/spin_lock.h"
+#ifndef _MSC_VER
+namespace boost::context::detail {
+ struct transfer_t;
+}
+#endif
+
namespace Common {
class Fiber {
@@ -31,9 +37,6 @@ public:
/// Only call from main thread's fiber
void Exit();
- /// Used internally but required to be public, Shall not be used
- void _start(void* parameter);
-
/// Changes the start parameter of the fiber. Has no effect if the fiber already started
void SetStartParameter(void* new_parameter) {
start_parameter = new_parameter;
@@ -42,6 +45,16 @@ public:
private:
Fiber();
+#ifdef _MSC_VER
+ void start();
+ static void FiberStartFunc(void* fiber_parameter);
+#else
+ void start(boost::context::detail::transfer_t& transfer);
+ static void FiberStartFunc(boost::context::detail::transfer_t transfer);
+#endif
+
+
+
struct FiberImpl;
SpinLock guard;
diff --git a/src/tests/CMakeLists.txt b/src/tests/CMakeLists.txt
index c7038b217..47ef30aa9 100644
--- a/src/tests/CMakeLists.txt
+++ b/src/tests/CMakeLists.txt
@@ -1,6 +1,7 @@
add_executable(tests
common/bit_field.cpp
common/bit_utils.cpp
+ common/fibers.cpp
common/multi_level_queue.cpp
common/param_package.cpp
common/ring_buffer.cpp
diff --git a/src/tests/common/fibers.cpp b/src/tests/common/fibers.cpp
new file mode 100644
index 000000000..ff840afa6
--- /dev/null
+++ b/src/tests/common/fibers.cpp
@@ -0,0 +1,214 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <atomic>
+#include <cstdlib>
+#include <functional>
+#include <memory>
+#include <thread>
+#include <unordered_map>
+#include <vector>
+
+#include <catch2/catch.hpp>
+#include <math.h>
+#include "common/common_types.h"
+#include "common/fiber.h"
+#include "common/spin_lock.h"
+
+namespace Common {
+
+class TestControl1 {
+public:
+ TestControl1() = default;
+
+ void DoWork();
+
+ void ExecuteThread(u32 id);
+
+ std::unordered_map<std::thread::id, u32> ids;
+ std::vector<std::shared_ptr<Common::Fiber>> thread_fibers;
+ std::vector<std::shared_ptr<Common::Fiber>> work_fibers;
+ std::vector<u32> items;
+ std::vector<u32> results;
+};
+
+static void WorkControl1(void* control) {
+ TestControl1* test_control = static_cast<TestControl1*>(control);
+ test_control->DoWork();
+}
+
+void TestControl1::DoWork() {
+ std::thread::id this_id = std::this_thread::get_id();
+ u32 id = ids[this_id];
+ u32 value = items[id];
+ for (u32 i = 0; i < id; i++) {
+ value++;
+ }
+ results[id] = value;
+ Fiber::YieldTo(work_fibers[id], thread_fibers[id]);
+}
+
+void TestControl1::ExecuteThread(u32 id) {
+ std::thread::id this_id = std::this_thread::get_id();
+ ids[this_id] = id;
+ auto thread_fiber = Fiber::ThreadToFiber();
+ thread_fibers[id] = thread_fiber;
+ work_fibers[id] = std::make_shared<Fiber>(std::function<void(void*)>{WorkControl1}, this);
+ items[id] = rand() % 256;
+ Fiber::YieldTo(thread_fibers[id], work_fibers[id]);
+ thread_fibers[id]->Exit();
+}
+
+static void ThreadStart1(u32 id, TestControl1& test_control) {
+ test_control.ExecuteThread(id);
+}
+
+
+TEST_CASE("Fibers::Setup", "[common]") {
+ constexpr u32 num_threads = 7;
+ TestControl1 test_control{};
+ test_control.thread_fibers.resize(num_threads, nullptr);
+ test_control.work_fibers.resize(num_threads, nullptr);
+ test_control.items.resize(num_threads, 0);
+ test_control.results.resize(num_threads, 0);
+ std::vector<std::thread> threads;
+ for (u32 i = 0; i < num_threads; i++) {
+ threads.emplace_back(ThreadStart1, i, std::ref(test_control));
+ }
+ for (u32 i = 0; i < num_threads; i++) {
+ threads[i].join();
+ }
+ for (u32 i = 0; i < num_threads; i++) {
+ REQUIRE(test_control.items[i] + i == test_control.results[i]);
+ }
+}
+
+class TestControl2 {
+public:
+ TestControl2() = default;
+
+ void DoWork1() {
+ trap2 = false;
+ while (trap.load());
+ for (u32 i = 0; i < 12000; i++) {
+ value1 += i;
+ }
+ Fiber::YieldTo(fiber1, fiber3);
+ std::thread::id this_id = std::this_thread::get_id();
+ u32 id = ids[this_id];
+ assert1 = id == 1;
+ value2 += 5000;
+ Fiber::YieldTo(fiber1, thread_fibers[id]);
+ }
+
+ void DoWork2() {
+ while (trap2.load());
+ value2 = 2000;
+ trap = false;
+ Fiber::YieldTo(fiber2, fiber1);
+ assert3 = false;
+ }
+
+ void DoWork3() {
+ std::thread::id this_id = std::this_thread::get_id();
+ u32 id = ids[this_id];
+ assert2 = id == 0;
+ value1 += 1000;
+ Fiber::YieldTo(fiber3, thread_fibers[id]);
+ }
+
+ void ExecuteThread(u32 id);
+
+ void CallFiber1() {
+ std::thread::id this_id = std::this_thread::get_id();
+ u32 id = ids[this_id];
+ Fiber::YieldTo(thread_fibers[id], fiber1);
+ }
+
+ void CallFiber2() {
+ std::thread::id this_id = std::this_thread::get_id();
+ u32 id = ids[this_id];
+ Fiber::YieldTo(thread_fibers[id], fiber2);
+ }
+
+ void Exit();
+
+ bool assert1{};
+ bool assert2{};
+ bool assert3{true};
+ u32 value1{};
+ u32 value2{};
+ std::atomic<bool> trap{true};
+ std::atomic<bool> trap2{true};
+ std::unordered_map<std::thread::id, u32> ids;
+ std::vector<std::shared_ptr<Common::Fiber>> thread_fibers;
+ std::shared_ptr<Common::Fiber> fiber1;
+ std::shared_ptr<Common::Fiber> fiber2;
+ std::shared_ptr<Common::Fiber> fiber3;
+};
+
+static void WorkControl2_1(void* control) {
+ TestControl2* test_control = static_cast<TestControl2*>(control);
+ test_control->DoWork1();
+}
+
+static void WorkControl2_2(void* control) {
+ TestControl2* test_control = static_cast<TestControl2*>(control);
+ test_control->DoWork2();
+}
+
+static void WorkControl2_3(void* control) {
+ TestControl2* test_control = static_cast<TestControl2*>(control);
+ test_control->DoWork3();
+}
+
+void TestControl2::ExecuteThread(u32 id) {
+ std::thread::id this_id = std::this_thread::get_id();
+ ids[this_id] = id;
+ auto thread_fiber = Fiber::ThreadToFiber();
+ thread_fibers[id] = thread_fiber;
+}
+
+void TestControl2::Exit() {
+ std::thread::id this_id = std::this_thread::get_id();
+ u32 id = ids[this_id];
+ thread_fibers[id]->Exit();
+}
+
+static void ThreadStart2_1(u32 id, TestControl2& test_control) {
+ test_control.ExecuteThread(id);
+ test_control.CallFiber1();
+ test_control.Exit();
+}
+
+static void ThreadStart2_2(u32 id, TestControl2& test_control) {
+ test_control.ExecuteThread(id);
+ test_control.CallFiber2();
+ test_control.Exit();
+}
+
+TEST_CASE("Fibers::InterExchange", "[common]") {
+ TestControl2 test_control{};
+ test_control.thread_fibers.resize(2, nullptr);
+ test_control.fiber1 = std::make_shared<Fiber>(std::function<void(void*)>{WorkControl2_1}, &test_control);
+ test_control.fiber2 = std::make_shared<Fiber>(std::function<void(void*)>{WorkControl2_2}, &test_control);
+ test_control.fiber3 = std::make_shared<Fiber>(std::function<void(void*)>{WorkControl2_3}, &test_control);
+ std::thread thread1(ThreadStart2_1, 0, std::ref(test_control));
+ std::thread thread2(ThreadStart2_2, 1, std::ref(test_control));
+ thread1.join();
+ thread2.join();
+ REQUIRE(test_control.assert1);
+ REQUIRE(test_control.assert2);
+ REQUIRE(test_control.assert3);
+ REQUIRE(test_control.value2 == 7000);
+ u32 cal_value = 0;
+ for (u32 i = 0; i < 12000; i++) {
+ cal_value += i;
+ }
+ cal_value += 1000;
+ REQUIRE(test_control.value1 == cal_value);
+}
+
+
+} // namespace Common
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