general: improve handling of system startup failure

This commit is contained in:
Liam 2022-12-06 16:13:42 -05:00
parent 08d4e7c7af
commit 9704acb982
5 changed files with 27 additions and 21 deletions

View File

@ -11,6 +11,7 @@
#include <mutex>
#include <thread>
#include "common/common_types.h"
#include "common/polyfill_thread.h"
namespace Common {
@ -69,7 +70,7 @@ public:
explicit Barrier(std::size_t count_) : count(count_) {}
/// Blocks until all "count" threads have called Sync()
void Sync() {
bool Sync(std::stop_token token = {}) {
std::unique_lock lk{mutex};
const std::size_t current_generation = generation;
@ -77,14 +78,16 @@ public:
generation++;
waiting = 0;
condvar.notify_all();
return true;
} else {
condvar.wait(lk,
CondvarWait(condvar, lk, token,
[this, current_generation] { return current_generation != generation; });
return !token.stop_requested();
}
}
private:
std::condition_variable condvar;
std::condition_variable_any condvar;
std::mutex mutex;
std::size_t count;
std::size_t waiting = 0;

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@ -389,7 +389,9 @@ struct System::Impl {
kernel.ShutdownCores();
cpu_manager.Shutdown();
debugger.reset();
if (services) {
services->KillNVNFlinger();
}
kernel.CloseServices();
services.reset();
service_manager.reset();

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@ -20,23 +20,20 @@ namespace Core {
CpuManager::CpuManager(System& system_) : system{system_} {}
CpuManager::~CpuManager() = default;
void CpuManager::ThreadStart(std::stop_token stop_token, CpuManager& cpu_manager,
std::size_t core) {
cpu_manager.RunThread(core);
}
void CpuManager::Initialize() {
num_cores = is_multicore ? Core::Hardware::NUM_CPU_CORES : 1;
gpu_barrier = std::make_unique<Common::Barrier>(num_cores + 1);
for (std::size_t core = 0; core < num_cores; core++) {
core_data[core].host_thread = std::jthread(ThreadStart, std::ref(*this), core);
core_data[core].host_thread =
std::jthread([this, core](std::stop_token token) { RunThread(token, core); });
}
}
void CpuManager::Shutdown() {
for (std::size_t core = 0; core < num_cores; core++) {
if (core_data[core].host_thread.joinable()) {
core_data[core].host_thread.request_stop();
core_data[core].host_thread.join();
}
}
@ -184,7 +181,7 @@ void CpuManager::ShutdownThread() {
UNREACHABLE();
}
void CpuManager::RunThread(std::size_t core) {
void CpuManager::RunThread(std::stop_token token, std::size_t core) {
/// Initialization
system.RegisterCoreThread(core);
std::string name;
@ -206,7 +203,9 @@ void CpuManager::RunThread(std::size_t core) {
});
// Running
gpu_barrier->Sync();
if (!gpu_barrier->Sync(token)) {
return;
}
if (!is_async_gpu && !is_multicore) {
system.GPU().ObtainContext();

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@ -81,12 +81,10 @@ private:
void SingleCoreRunGuestThread();
void SingleCoreRunIdleThread();
static void ThreadStart(std::stop_token stop_token, CpuManager& cpu_manager, std::size_t core);
void GuestActivate();
void HandleInterrupt();
void ShutdownThread();
void RunThread(std::size_t core);
void RunThread(std::stop_token stop_token, std::size_t core);
struct CoreData {
std::shared_ptr<Common::Fiber> host_context;

View File

@ -104,12 +104,16 @@ struct KernelCore::Impl {
}
void CloseCurrentProcess() {
(*current_process).Finalize();
// current_process->Close();
// TODO: The current process should be destroyed based on accurate ref counting after
KProcess* old_process = current_process.exchange(nullptr);
if (old_process == nullptr) {
return;
}
// old_process->Close();
// TODO: The process should be destroyed based on accurate ref counting after
// calling Close(). Adding a manual Destroy() call instead to avoid a memory leak.
(*current_process).Destroy();
current_process = nullptr;
old_process->Finalize();
old_process->Destroy();
}
void Shutdown() {