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Fix Service object leak on emulation stop

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Services created with the ServiceFramework base class install themselves as HleHandlers with an owning shared_ptr in the ServerPort ServiceFrameworkBase::port member variable, creating a cyclic ownership between ServiceFrameworkBase and the ServerPort, preventing deletion of the service objects.

Fix that by removing the ServiceFrameworkBase::port member because that was only used to detect multiple attempts at installing a port. Instead store a flag if the port was already installed to achieve the same functionality.
This commit is contained in:
Jens Schmer 2018-12-12 20:07:14 +01:00
parent 700075beb6
commit 27a9cc2e63
2 changed files with 12 additions and 10 deletions
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14
src/core/hle/service/service.cpp
View file

@ -97,29 +97,33 @@ ServiceFrameworkBase::ServiceFrameworkBase(const char* service_name, u32 max_ses
ServiceFrameworkBase::~ServiceFrameworkBase() = default;
void ServiceFrameworkBase::InstallAsService(SM::ServiceManager& service_manager) {
ASSERT(port == nullptr);
port = service_manager.RegisterService(service_name, max_sessions).Unwrap();
ASSERT(!port_installed);
auto port = service_manager.RegisterService(service_name, max_sessions).Unwrap();
port->SetHleHandler(shared_from_this());
port_installed = true;
}
void ServiceFrameworkBase::InstallAsNamedPort() {
ASSERT(port == nullptr);
ASSERT(!port_installed);
auto& kernel = Core::System::GetInstance().Kernel();
auto [server_port, client_port] =
Kernel::ServerPort::CreatePortPair(kernel, max_sessions, service_name);
server_port->SetHleHandler(shared_from_this());
kernel.AddNamedPort(service_name, std::move(client_port));
port_installed = true;
}
Kernel::SharedPtr<Kernel::ClientPort> ServiceFrameworkBase::CreatePort() {
ASSERT(port == nullptr);
ASSERT(!port_installed);
auto& kernel = Core::System::GetInstance().Kernel();
auto [server_port, client_port] =
Kernel::ServerPort::CreatePortPair(kernel, max_sessions, service_name);
port = MakeResult(std::move(server_port)).Unwrap();
auto port = MakeResult(std::move(server_port)).Unwrap();
port->SetHleHandler(shared_from_this());
port_installed = true;
return client_port;
}

8
src/core/hle/service/service.h
View file

@ -96,11 +96,9 @@ private:
/// Maximum number of concurrent sessions that this service can handle.
u32 max_sessions;
/**
* Port where incoming connections will be received. Only created when InstallAsService() or
* InstallAsNamedPort() are called.
*/
Kernel::SharedPtr<Kernel::ServerPort> port;
/// Flag to store if a port was already create/installed to detect multiple install attempts,
/// which is not supported.
bool port_installed = false;
/// Function used to safely up-cast pointers to the derived class before invoking a handler.
InvokerFn* handler_invoker;