blob: 9a261968a7cb2841773fe094b50d79be481fe8a4 (
plain) (
blame)
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
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/fiber.h"
#include "common/microprofile.h"
#include "common/thread.h"
#include "core/arm/exclusive_monitor.h"
#include "core/core.h"
#include "core/core_timing.h"
#include "core/cpu_manager.h"
#include "core/gdbstub/gdbstub.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/physical_core.h"
#include "core/hle/kernel/scheduler.h"
#include "core/hle/kernel/thread.h"
namespace Core {
CpuManager::CpuManager(System& system) : system{system} {}
CpuManager::~CpuManager() = default;
void CpuManager::ThreadStart(CpuManager& cpu_manager, std::size_t core) {
cpu_manager.RunThread(core);
}
void CpuManager::Initialize() {
running_mode = true;
for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
core_data[core].host_thread =
std::make_unique<std::thread>(ThreadStart, std::ref(*this), core);
}
}
void CpuManager::Shutdown() {
running_mode = false;
Pause(false);
for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
core_data[core].host_thread->join();
core_data[core].host_thread.reset();
}
}
void CpuManager::GuestThreadFunction(void* cpu_manager_) {
CpuManager* cpu_manager = static_cast<CpuManager*>(cpu_manager_);
cpu_manager->RunGuestThread();
}
void CpuManager::GuestRewindFunction(void* cpu_manager_) {
CpuManager* cpu_manager = static_cast<CpuManager*>(cpu_manager_);
cpu_manager->RunGuestLoop();
}
void CpuManager::IdleThreadFunction(void* cpu_manager_) {
CpuManager* cpu_manager = static_cast<CpuManager*>(cpu_manager_);
cpu_manager->RunIdleThread();
}
void CpuManager::SuspendThreadFunction(void* cpu_manager_) {
CpuManager* cpu_manager = static_cast<CpuManager*>(cpu_manager_);
cpu_manager->RunSuspendThread();
}
std::function<void(void*)> CpuManager::GetGuestThreadStartFunc() {
return std::function<void(void*)>(GuestThreadFunction);
}
std::function<void(void*)> CpuManager::GetIdleThreadStartFunc() {
return std::function<void(void*)>(IdleThreadFunction);
}
std::function<void(void*)> CpuManager::GetSuspendThreadStartFunc() {
return std::function<void(void*)>(SuspendThreadFunction);
}
void* CpuManager::GetStartFuncParamater() {
return static_cast<void*>(this);
}
void CpuManager::RunGuestThread() {
auto& kernel = system.Kernel();
{
auto& sched = kernel.CurrentScheduler();
sched.OnThreadStart();
}
RunGuestLoop();
}
void CpuManager::RunGuestLoop() {
auto& kernel = system.Kernel();
auto* thread = kernel.CurrentScheduler().GetCurrentThread();
auto host_context = thread->GetHostContext();
host_context->SetRewindPoint(std::function<void(void*)>(GuestRewindFunction), this);
host_context.reset();
while (true) {
auto& physical_core = kernel.CurrentPhysicalCore();
while (!physical_core.IsInterrupted()) {
physical_core.Run();
}
physical_core.ClearExclusive();
auto& scheduler = physical_core.Scheduler();
scheduler.TryDoContextSwitch();
}
}
void CpuManager::RunIdleThread() {
auto& kernel = system.Kernel();
while (true) {
auto& physical_core = kernel.CurrentPhysicalCore();
physical_core.Idle();
auto& scheduler = physical_core.Scheduler();
scheduler.TryDoContextSwitch();
}
}
void CpuManager::RunSuspendThread() {
auto& kernel = system.Kernel();
{
auto& sched = kernel.CurrentScheduler();
sched.OnThreadStart();
}
while (true) {
auto core = kernel.GetCurrentHostThreadID();
auto& scheduler = kernel.CurrentScheduler();
Kernel::Thread* current_thread = scheduler.GetCurrentThread();
Common::Fiber::YieldTo(current_thread->GetHostContext(), core_data[core].host_context);
ASSERT(scheduler.ContextSwitchPending());
ASSERT(core == kernel.GetCurrentHostThreadID());
scheduler.TryDoContextSwitch();
}
}
void CpuManager::Pause(bool paused) {
if (!paused) {
bool all_not_barrier = false;
while (!all_not_barrier) {
all_not_barrier = true;
for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
all_not_barrier &=
!core_data[core].is_running.load() && core_data[core].initialized.load();
}
}
for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
core_data[core].enter_barrier->Set();
}
if (paused_state.load()) {
bool all_barrier = false;
while (!all_barrier) {
all_barrier = true;
for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
all_barrier &=
core_data[core].is_paused.load() && core_data[core].initialized.load();
}
}
for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
core_data[core].exit_barrier->Set();
}
}
} else {
/// Wait until all cores are paused.
bool all_barrier = false;
while (!all_barrier) {
all_barrier = true;
for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
all_barrier &=
core_data[core].is_paused.load() && core_data[core].initialized.load();
}
}
/// Don't release the barrier
}
paused_state = paused;
}
void CpuManager::RunThread(std::size_t core) {
/// Initialization
system.RegisterCoreThread(core);
std::string name = "yuzu:CoreHostThread_" + std::to_string(core);
MicroProfileOnThreadCreate(name.c_str());
Common::SetCurrentThreadName(name.c_str());
auto& data = core_data[core];
data.enter_barrier = std::make_unique<Common::Event>();
data.exit_barrier = std::make_unique<Common::Event>();
data.host_context = Common::Fiber::ThreadToFiber();
data.is_running = false;
data.initialized = true;
/// Running
while (running_mode) {
data.is_running = false;
data.enter_barrier->Wait();
auto& scheduler = system.Kernel().CurrentScheduler();
Kernel::Thread* current_thread = scheduler.GetCurrentThread();
data.is_running = true;
Common::Fiber::YieldTo(data.host_context, current_thread->GetHostContext());
data.is_running = false;
data.is_paused = true;
data.exit_barrier->Wait();
data.is_paused = false;
}
/// Time to cleanup
data.host_context->Exit();
data.enter_barrier.reset();
data.exit_barrier.reset();
data.initialized = false;
}
} // namespace Core
|
