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hle: kernel: Remove service thread manager and use weak_ptr.

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- We no longer need to queue up service threads to be destroyed.
- Fixes a race condition where a thread could be destroyed too early, which caused a crash in Pokemon Sword/Shield.
This commit is contained in:
bunnei 2021-06-07 21:10:51 -07:00
parent df91c9f5e6
commit a493ab2678
3 changed files with 8 additions and 18 deletions
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6
src/core/hle/kernel/hle_ipc.h
View file

@ -85,8 +85,8 @@ public:
*/
void ClientDisconnected(KServerSession* session);
std::shared_ptr<ServiceThread> GetServiceThread() const {
return service_thread.lock();
std::weak_ptr<ServiceThread> GetServiceThread() const {
return service_thread;
}
protected:
@ -152,7 +152,7 @@ public:
session_handler = std::move(handler);
}
std::shared_ptr<ServiceThread> GetServiceThread() const {
std::weak_ptr<ServiceThread> GetServiceThread() const {
return session_handler->GetServiceThread();
}

2
src/core/hle/kernel/k_server_session.cpp
View file

@ -119,7 +119,7 @@ ResultCode KServerSession::QueueSyncRequest(KThread* thread, Core::Memory::Memor
context->PopulateFromIncomingCommandBuffer(kernel.CurrentProcess()->GetHandleTable(), cmd_buf);
if (auto strong_ptr = manager->GetServiceThread(); strong_ptr) {
if (auto strong_ptr = manager->GetServiceThread().lock()) {
strong_ptr->QueueSyncRequest(*parent, std::move(context));
return ResultSuccess;
} else {

18
src/core/hle/kernel/kernel.cpp
View file

@ -63,8 +63,6 @@ struct KernelCore::Impl {
global_scheduler_context = std::make_unique<Kernel::GlobalSchedulerContext>(kernel);
global_handle_table = std::make_unique<Kernel::KHandleTable>(kernel);
service_thread_manager =
std::make_unique<Common::ThreadWorker>(1, "yuzu:ServiceThreadManager");
is_phantom_mode_for_singlecore = false;
InitializePhysicalCores();
@ -96,7 +94,6 @@ struct KernelCore::Impl {
process_list.clear();
// Ensures all service threads gracefully shutdown
service_thread_manager.reset();
service_threads.clear();
next_object_id = 0;
@ -680,10 +677,6 @@ struct KernelCore::Impl {
// Threads used for services
std::unordered_set<std::shared_ptr<Kernel::ServiceThread>> service_threads;
// Service threads are managed by a worker thread, so that a calling service thread can queue up
// the release of itself
std::unique_ptr<Common::ThreadWorker> service_thread_manager;
std::array<KThread*, Core::Hardware::NUM_CPU_CORES> suspend_threads;
std::array<Core::CPUInterruptHandler, Core::Hardware::NUM_CPU_CORES> interrupts{};
std::array<std::unique_ptr<Kernel::KScheduler>, Core::Hardware::NUM_CPU_CORES> schedulers{};
@ -986,17 +979,14 @@ void KernelCore::ExitSVCProfile() {
std::weak_ptr<Kernel::ServiceThread> KernelCore::CreateServiceThread(const std::string& name) {
auto service_thread = std::make_shared<Kernel::ServiceThread>(*this, 1, name);
impl->service_thread_manager->QueueWork(
[this, service_thread] { impl->service_threads.emplace(service_thread); });
impl->service_threads.emplace(service_thread);
return service_thread;
}
void KernelCore::ReleaseServiceThread(std::weak_ptr<Kernel::ServiceThread> service_thread) {
impl->service_thread_manager->QueueWork([this, service_thread] {
if (auto strong_ptr = service_thread.lock()) {
impl->service_threads.erase(strong_ptr);
}
});
if (auto strong_ptr = service_thread.lock()) {
impl->service_threads.erase(strong_ptr);
}
}
Init::KSlabResourceCounts& KernelCore::SlabResourceCounts() {