Merge pull request #6428 from bunnei/service-thread-crash-fix

hle: kernel: Remove service thread manager and use weak_ptr.
master
bunnei 2021-06-08 16:43:55 +07:00 committed by GitHub
commit 3c621d37f0
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4 changed files with 56 additions and 28 deletions

@ -41,6 +41,21 @@ SessionRequestManager::SessionRequestManager(KernelCore& kernel_) : kernel{kerne
SessionRequestManager::~SessionRequestManager() = default;
bool SessionRequestManager::HasSessionRequestHandler(const HLERequestContext& context) const {
if (IsDomain() && context.HasDomainMessageHeader()) {
const auto& message_header = context.GetDomainMessageHeader();
const auto object_id = message_header.object_id;
if (object_id > DomainHandlerCount()) {
LOG_CRITICAL(IPC, "object_id {} is too big!", object_id);
return false;
}
return DomainHandler(object_id - 1) != nullptr;
} else {
return session_handler != nullptr;
}
}
void SessionRequestHandler::ClientConnected(KServerSession* session) {
session->SetSessionHandler(shared_from_this());
}

@ -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:
@ -152,10 +152,12 @@ public:
session_handler = std::move(handler);
}
std::shared_ptr<ServiceThread> GetServiceThread() const {
std::weak_ptr<ServiceThread> GetServiceThread() const {
return session_handler->GetServiceThread();
}
bool HasSessionRequestHandler(const HLERequestContext& context) const;
private:
bool is_domain{};
SessionRequestHandlerPtr session_handler;
@ -163,7 +165,6 @@ private:
private:
KernelCore& kernel;
std::weak_ptr<ServiceThread> service_thread;
};
/**

@ -8,6 +8,7 @@
#include "common/assert.h"
#include "common/common_types.h"
#include "common/logging/log.h"
#include "common/scope_exit.h"
#include "core/core_timing.h"
#include "core/hle/ipc_helpers.h"
#include "core/hle/kernel/hle_ipc.h"
@ -119,11 +120,25 @@ ResultCode KServerSession::QueueSyncRequest(KThread* thread, Core::Memory::Memor
context->PopulateFromIncomingCommandBuffer(kernel.CurrentProcess()->GetHandleTable(), cmd_buf);
if (auto strong_ptr = manager->GetServiceThread(); strong_ptr) {
strong_ptr->QueueSyncRequest(*parent, std::move(context));
return ResultSuccess;
// In the event that something fails here, stub a result to prevent the game from crashing.
// This is a work-around in the event that somehow we process a service request after the
// session has been closed by the game. This has been observed to happen rarely in Pokemon
// Sword/Shield and is likely a result of us using host threads/scheduling for services.
// TODO(bunnei): Find a better solution here.
auto error_guard = SCOPE_GUARD({ CompleteSyncRequest(*context); });
// Ensure we have a session request handler
if (manager->HasSessionRequestHandler(*context)) {
if (auto strong_ptr = manager->GetServiceThread().lock()) {
strong_ptr->QueueSyncRequest(*parent, std::move(context));
// We succeeded.
error_guard.Cancel();
} else {
ASSERT_MSG(false, "strong_ptr is nullptr!");
}
} else {
ASSERT_MSG(false, "strong_ptr was nullptr!");
ASSERT_MSG(false, "handler is invalid!");
}
return ResultSuccess;
@ -131,13 +146,20 @@ ResultCode KServerSession::QueueSyncRequest(KThread* thread, Core::Memory::Memor
ResultCode KServerSession::CompleteSyncRequest(HLERequestContext& context) {
ResultCode result = ResultSuccess;
// If the session has been converted to a domain, handle the domain request
if (IsDomain() && context.HasDomainMessageHeader()) {
result = HandleDomainSyncRequest(context);
// If there is no domain header, the regular session handler is used
} else if (manager->HasSessionHandler()) {
// If this ServerSession has an associated HLE handler, forward the request to it.
result = manager->SessionHandler().HandleSyncRequest(*this, context);
if (manager->HasSessionRequestHandler(context)) {
if (IsDomain() && context.HasDomainMessageHeader()) {
result = HandleDomainSyncRequest(context);
// If there is no domain header, the regular session handler is used
} else if (manager->HasSessionHandler()) {
// If this ServerSession has an associated HLE handler, forward the request to it.
result = manager->SessionHandler().HandleSyncRequest(*this, context);
}
} else {
ASSERT_MSG(false, "Session handler is invalid, stubbing response!");
IPC::ResponseBuilder rb(context, 2);
rb.Push(ResultSuccess);
}
if (convert_to_domain) {

@ -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() {