mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-11-10 07:06:34 +00:00
234 lines
8.4 KiB
C++
234 lines
8.4 KiB
C++
/*
|
|
* Copyright (c) 2018-2020 Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include <stratosphere.hpp>
|
|
#include "os_thread_manager.hpp"
|
|
#include "os_multiple_wait_impl.hpp"
|
|
#include "os_multiple_wait_holder_base.hpp"
|
|
#include "os_multiple_wait_holder_impl.hpp"
|
|
#include "os_multiple_wait_object_list.hpp"
|
|
#include "os_utility.hpp"
|
|
|
|
namespace ams::os::impl {
|
|
|
|
void SetupThreadObjectUnsafe(ThreadType *thread, ThreadImpl *thread_impl, ThreadFunction function, void *arg, void *stack, size_t stack_size, s32 priority) {
|
|
/* Setup objects. */
|
|
util::ConstructAt(thread->cs_thread);
|
|
util::ConstructAt(thread->cv_thread);
|
|
|
|
util::ConstructAt(thread->all_threads_node);
|
|
util::ConstructAt(thread->waitlist);
|
|
|
|
/* Set member variables. */
|
|
thread->magic = os::ThreadType::Magic;
|
|
thread->version = 0;
|
|
thread->thread_impl = (thread_impl != nullptr) ? thread_impl : std::addressof(thread->thread_impl_storage);
|
|
thread->function = function;
|
|
thread->argument = arg;
|
|
thread->stack = stack;
|
|
thread->stack_size = stack_size;
|
|
thread->base_priority = priority;
|
|
thread->suspend_count = 0;
|
|
thread->name_buffer[0] = '\x00';
|
|
thread->name_pointer = thread->name_buffer;
|
|
|
|
/* Set internal tls variables. */
|
|
thread->atomic_sf_inline_context = 0;
|
|
|
|
/* Mark initialized. */
|
|
thread->state = ThreadType::State_Initialized;
|
|
}
|
|
|
|
void ThreadManager::InvokeThread(ThreadType *thread) {
|
|
auto &manager = GetThreadManager();
|
|
|
|
manager.SetCurrentThread(thread);
|
|
manager.NotifyThreadNameChanged(thread);
|
|
|
|
{
|
|
GetReference(thread->cs_thread).Lock();
|
|
while (thread->state == ThreadType::State_Initialized) {
|
|
GetReference(thread->cv_thread).Wait(GetPointer(thread->cs_thread));
|
|
}
|
|
const auto new_state = thread->state;
|
|
GetReference(thread->cs_thread).Unlock();
|
|
|
|
if (new_state == ThreadType::State_Started) {
|
|
thread->function(thread->argument);
|
|
}
|
|
}
|
|
|
|
manager.CleanupThread();
|
|
}
|
|
|
|
ThreadManager::ThreadManager() : impl(std::addressof(main_thread)), total_thread_stack_size(0), num_created_threads(0) {
|
|
this->main_thread.state = ThreadType::State_Started;
|
|
|
|
this->SetCurrentThread(std::addressof(this->main_thread));
|
|
|
|
this->PlaceThreadObjectUnderThreadManagerSafe(std::addressof(this->main_thread));
|
|
}
|
|
|
|
void ThreadManager::CleanupThread() {
|
|
ThreadType *thread = this->GetCurrentThread();
|
|
|
|
{
|
|
std::scoped_lock lk(GetReference(thread->cs_thread));
|
|
|
|
thread->state = ThreadType::State_Terminated;
|
|
|
|
GetReference(thread->cv_thread).Broadcast();
|
|
GetReference(thread->waitlist).SignalAllThreads();
|
|
}
|
|
}
|
|
|
|
Result ThreadManager::CreateThread(ThreadType *thread, ThreadFunction function, void *argument, void *stack, size_t stack_size, s32 priority, s32 ideal_core) {
|
|
SetupThreadObjectUnsafe(thread, nullptr, function, argument, stack, stack_size, priority);
|
|
|
|
auto guard = SCOPE_GUARD { thread->state = ThreadType::State_NotInitialized; };
|
|
R_TRY(this->impl.CreateThread(thread, ideal_core));
|
|
guard.Cancel();
|
|
|
|
this->PlaceThreadObjectUnderThreadManagerSafe(thread);
|
|
|
|
return ResultSuccess();
|
|
}
|
|
|
|
Result ThreadManager::CreateThread(ThreadType *thread, ThreadFunction function, void *argument, void *stack, size_t stack_size, s32 priority) {
|
|
return this->CreateThread(thread, function, argument, stack, stack_size, priority, this->impl.GetDefaultCoreNumber());
|
|
}
|
|
|
|
void ThreadManager::DestroyThread(ThreadType *thread) {
|
|
{
|
|
std::scoped_lock lk(GetReference(thread->cs_thread));
|
|
|
|
if (thread->state == ThreadType::State_Initialized) {
|
|
thread->state = ThreadType::State_DestroyedBeforeStarted;
|
|
this->impl.StartThread(thread);
|
|
GetReference(thread->cv_thread).Signal();
|
|
}
|
|
}
|
|
|
|
this->impl.WaitForThreadExit(thread);
|
|
|
|
AMS_ASSERT(thread->state == ThreadType::State_Initialized);
|
|
|
|
{
|
|
std::scoped_lock lk(GetReference(thread->cs_thread));
|
|
|
|
/* NOTE: Here Nintendo would cleanup the alias stack. */
|
|
|
|
this->impl.DestroyThreadUnsafe(thread);
|
|
|
|
thread->state = ThreadType::State_NotInitialized;
|
|
|
|
util::DestroyAt(thread->waitlist);
|
|
|
|
thread->name_buffer[0] = '\x00';
|
|
thread->magic = 0xCCCC;
|
|
|
|
{
|
|
std::scoped_lock tlk(this->cs);
|
|
this->EraseFromAllThreadsListUnsafe(thread);
|
|
}
|
|
}
|
|
}
|
|
|
|
void ThreadManager::StartThread(ThreadType *thread) {
|
|
std::scoped_lock lk(GetReference(thread->cs_thread));
|
|
|
|
AMS_ASSERT(thread->state == ThreadType::State_Initialized);
|
|
|
|
this->impl.StartThread(thread);
|
|
thread->state = ThreadType::State_Started;
|
|
|
|
GetReference(thread->cv_thread).Signal();
|
|
}
|
|
|
|
void ThreadManager::WaitThread(ThreadType *thread) {
|
|
this->impl.WaitForThreadExit(thread);
|
|
|
|
{
|
|
std::scoped_lock lk(GetReference(thread->cs_thread));
|
|
|
|
/* Note: Here Nintendo would cleanup the alias stack. */
|
|
}
|
|
}
|
|
|
|
bool ThreadManager::TryWaitThread(ThreadType *thread) {
|
|
const bool result = this->impl.TryWaitForThreadExit(thread);
|
|
|
|
if (result) {
|
|
std::scoped_lock lk(GetReference(thread->cs_thread));
|
|
|
|
/* Note: Here Nintendo would cleanup the alias stack. */
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
s32 ThreadManager::SuspendThread(ThreadType *thread) {
|
|
std::scoped_lock lk(GetReference(thread->cs_thread));
|
|
|
|
auto prev_suspend_count = thread->suspend_count;
|
|
AMS_ASSERT(prev_suspend_count < ThreadSuspendCountMax);
|
|
thread->suspend_count = prev_suspend_count + 1;
|
|
|
|
if (prev_suspend_count == 0) {
|
|
this->impl.SuspendThreadUnsafe(thread);
|
|
}
|
|
return prev_suspend_count;
|
|
}
|
|
|
|
s32 ThreadManager::ResumeThread(ThreadType *thread) {
|
|
std::scoped_lock lk(GetReference(thread->cs_thread));
|
|
|
|
auto prev_suspend_count = thread->suspend_count;
|
|
if (prev_suspend_count > 0) {
|
|
thread->suspend_count = prev_suspend_count - 1;
|
|
if (prev_suspend_count == 1) {
|
|
this->impl.ResumeThreadUnsafe(thread);
|
|
}
|
|
}
|
|
return prev_suspend_count;
|
|
}
|
|
|
|
void ThreadManager::CancelThreadSynchronization(ThreadType *thread) {
|
|
std::scoped_lock lk(GetReference(thread->cs_thread));
|
|
|
|
this->impl.CancelThreadSynchronizationUnsafe(thread);
|
|
}
|
|
|
|
/* TODO void ThreadManager::GetThreadContext(ThreadContextInfo *out_context, const ThreadType *thread); */
|
|
|
|
void ThreadManager::SetInitialThreadNameUnsafe(ThreadType *thread) {
|
|
if (thread == std::addressof(this->main_thread)) {
|
|
constexpr const char MainThreadName[] = "MainThread";
|
|
static_assert(sizeof(thread->name_buffer) >= sizeof(MainThreadName));
|
|
static_assert(MainThreadName[sizeof(MainThreadName) - 1] == '\x00');
|
|
std::memcpy(thread->name_buffer, MainThreadName, sizeof(MainThreadName));
|
|
} else {
|
|
constexpr const char ThreadNamePrefix[] = "Thread_0x";
|
|
constexpr size_t ThreadNamePrefixSize = sizeof(ThreadNamePrefix) - 1;
|
|
const u64 func = reinterpret_cast<u64>(thread->function);
|
|
static_assert(ThreadNamePrefixSize + sizeof(func) * 2 + 1 <= sizeof(thread->name_buffer));
|
|
std::memcpy(thread->name_buffer, ThreadNamePrefix, ThreadNamePrefixSize);
|
|
os::impl::ExpandUnsignedValueToAscii(thread->name_buffer + ThreadNamePrefixSize, func);
|
|
}
|
|
|
|
thread->name_pointer = thread->name_buffer;
|
|
}
|
|
|
|
}
|