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// SPDX-FileCopyrightText: Copyright 2024 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "common/scope_exit.h"
#include "core/file_sys/nca_metadata.h"
#include "core/file_sys/registered_cache.h"
#include "core/hle/kernel/k_process.h"
#include "core/hle/service/am/process.h"
#include "core/hle/service/filesystem/filesystem.h"
#include "core/loader/loader.h"
namespace Service::AM {
Process::Process(Core::System& system)
: m_system(system), m_process(), m_main_thread_priority(), m_main_thread_stack_size(),
m_program_id(), m_process_started() {}
Process::~Process() {
this->Finalize();
}
bool Process::Initialize(u64 program_id) {
// First, ensure we are not holding another process.
this->Finalize();
// Get the filesystem controller.
auto& fsc = m_system.GetFileSystemController();
// Attempt to load program NCA.
const FileSys::RegisteredCache* bis_system{};
FileSys::VirtualFile nca{};
// Get the program NCA from built-in storage.
bis_system = fsc.GetSystemNANDContents();
if (bis_system) {
nca = bis_system->GetEntryRaw(program_id, FileSys::ContentRecordType::Program);
}
// Ensure we retrieved a program NCA.
if (!nca) {
return false;
}
// Get the appropriate loader to parse this NCA.
auto app_loader = Loader::GetLoader(m_system, nca, program_id, 0);
// Ensure we have a loader which can parse the NCA.
if (!app_loader) {
return false;
}
// Create the process.
auto* const process = Kernel::KProcess::Create(m_system.Kernel());
Kernel::KProcess::Register(m_system.Kernel(), process);
// On exit, ensure we free the additional reference to the process.
SCOPE_EXIT({ process->Close(); });
// Insert process modules into memory.
const auto [load_result, load_parameters] = app_loader->Load(*process, m_system);
// Ensure loading was successful.
if (load_result != Loader::ResultStatus::Success) {
return false;
}
// TODO: remove this, kernel already tracks this
m_system.Kernel().AppendNewProcess(process);
// Note the load parameters from NPDM.
m_main_thread_priority = load_parameters->main_thread_priority;
m_main_thread_stack_size = load_parameters->main_thread_stack_size;
// This process has not started yet.
m_process_started = false;
// Take ownership of the process object.
m_process = process;
m_process->Open();
// We succeeded.
return true;
}
void Process::Finalize() {
// Terminate, if we are currently holding a process.
this->Terminate();
// Close the process.
if (m_process) {
m_process->Close();
// TODO: remove this, kernel already tracks this
m_system.Kernel().RemoveProcess(m_process);
}
// Clean up.
m_process = nullptr;
m_main_thread_priority = 0;
m_main_thread_stack_size = 0;
m_program_id = 0;
m_process_started = false;
}
bool Process::Run() {
// If we already started the process, don't start again.
if (m_process_started) {
return false;
}
// Start.
if (m_process) {
m_process->Run(m_main_thread_priority, m_main_thread_stack_size);
}
// Mark as started.
m_process_started = true;
// We succeeded.
return true;
}
void Process::Terminate() {
if (m_process) {
m_process->Terminate();
}
}
u64 Process::GetProcessId() const {
if (m_process) {
return m_process->GetProcessId();
}
return 0;
}
} // namespace Service::AM
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