diff options
Diffstat (limited to 'src/core/hle/kernel/process.cpp')
-rw-r--r-- | src/core/hle/kernel/process.cpp | 257 |
1 files changed, 153 insertions, 104 deletions
diff --git a/src/core/hle/kernel/process.cpp b/src/core/hle/kernel/process.cpp index b905b486a..9d5956ead 100644 --- a/src/core/hle/kernel/process.cpp +++ b/src/core/hle/kernel/process.cpp @@ -14,15 +14,16 @@ #include "core/device_memory.h" #include "core/file_sys/program_metadata.h" #include "core/hle/kernel/code_set.h" -#include "core/hle/kernel/errors.h" +#include "core/hle/kernel/k_memory_block_manager.h" +#include "core/hle/kernel/k_page_table.h" +#include "core/hle/kernel/k_resource_limit.h" #include "core/hle/kernel/k_scheduler.h" +#include "core/hle/kernel/k_scoped_resource_reservation.h" +#include "core/hle/kernel/k_slab_heap.h" +#include "core/hle/kernel/k_thread.h" #include "core/hle/kernel/kernel.h" -#include "core/hle/kernel/memory/memory_block_manager.h" -#include "core/hle/kernel/memory/page_table.h" -#include "core/hle/kernel/memory/slab_heap.h" #include "core/hle/kernel/process.h" -#include "core/hle/kernel/resource_limit.h" -#include "core/hle/kernel/thread.h" +#include "core/hle/kernel/svc_results.h" #include "core/hle/lock.h" #include "core/memory.h" #include "core/settings.h" @@ -38,11 +39,12 @@ namespace { */ void SetupMainThread(Core::System& system, Process& owner_process, u32 priority, VAddr stack_top) { const VAddr entry_point = owner_process.PageTable().GetCodeRegionStart(); - ThreadType type = THREADTYPE_USER; - auto thread_res = Thread::Create(system, type, "main", entry_point, priority, 0, - owner_process.GetIdealCore(), stack_top, &owner_process); + ASSERT(owner_process.GetResourceLimit()->Reserve(LimitableResource::Threads, 1)); + auto thread_res = + KThread::CreateUserThread(system, ThreadType::User, "main", entry_point, priority, 0, + owner_process.GetIdealCoreId(), stack_top, &owner_process); - std::shared_ptr<Thread> thread = std::move(thread_res).Unwrap(); + std::shared_ptr<KThread> thread = std::move(thread_res).Unwrap(); // Register 1 must be a handle to the main thread const Handle thread_handle = owner_process.GetHandleTable().Create(thread).Unwrap(); @@ -55,7 +57,7 @@ void SetupMainThread(Core::System& system, Process& owner_process, u32 priority, // Threads by default are dormant, wake up the main thread so it runs when the scheduler fires { KScopedSchedulerLock lock{kernel}; - thread->SetStatus(ThreadStatus::Ready); + thread->SetState(ThreadState::Runnable); } } } // Anonymous namespace @@ -117,7 +119,10 @@ std::shared_ptr<Process> Process::Create(Core::System& system, std::string name, std::shared_ptr<Process> process = std::make_shared<Process>(system); process->name = std::move(name); - process->resource_limit = ResourceLimit::Create(kernel); + + // TODO: This is inaccurate + // The process should hold a reference to the kernel-wide resource limit. + process->resource_limit = std::make_shared<KResourceLimit>(kernel, system); process->status = ProcessStatus::Created; process->program_id = 0; process->process_id = type == ProcessType::KernelInternal ? kernel.CreateNewKernelProcessID() @@ -133,12 +138,32 @@ std::shared_ptr<Process> Process::Create(Core::System& system, std::string name, return process; } -std::shared_ptr<ResourceLimit> Process::GetResourceLimit() const { +std::shared_ptr<KResourceLimit> Process::GetResourceLimit() const { return resource_limit; } +void Process::IncrementThreadCount() { + ASSERT(num_threads >= 0); + num_created_threads++; + + if (const auto count = ++num_threads; count > peak_num_threads) { + peak_num_threads = count; + } +} + +void Process::DecrementThreadCount() { + ASSERT(num_threads > 0); + + if (const auto count = --num_threads; count == 0) { + UNIMPLEMENTED_MSG("Process termination is not implemented!"); + } +} + u64 Process::GetTotalPhysicalMemoryAvailable() const { - const u64 capacity{resource_limit->GetCurrentResourceValue(ResourceType::PhysicalMemory) + + // TODO: This is expected to always return the application memory pool size after accurately + // reserving kernel resources. The current workaround uses a process-local resource limit of + // application memory pool size, which is inaccurate. + const u64 capacity{resource_limit->GetFreeValue(LimitableResource::PhysicalMemory) + page_table->GetTotalHeapSize() + GetSystemResourceSize() + image_size + main_thread_stack_size}; @@ -162,68 +187,79 @@ u64 Process::GetTotalPhysicalMemoryUsedWithoutSystemResource() const { return GetTotalPhysicalMemoryUsed() - GetSystemResourceUsage(); } -void Process::InsertConditionVariableThread(std::shared_ptr<Thread> thread) { - VAddr cond_var_addr = thread->GetCondVarWaitAddress(); - std::list<std::shared_ptr<Thread>>& thread_list = cond_var_threads[cond_var_addr]; - auto it = thread_list.begin(); - while (it != thread_list.end()) { - const std::shared_ptr<Thread> current_thread = *it; - if (current_thread->GetPriority() > thread->GetPriority()) { - thread_list.insert(it, thread); - return; +bool Process::ReleaseUserException(KThread* thread) { + KScopedSchedulerLock sl{kernel}; + + if (exception_thread == thread) { + exception_thread = nullptr; + + // Remove waiter thread. + s32 num_waiters{}; + KThread* next = thread->RemoveWaiterByKey( + std::addressof(num_waiters), + reinterpret_cast<uintptr_t>(std::addressof(exception_thread))); + if (next != nullptr) { + if (next->GetState() == ThreadState::Waiting) { + next->SetState(ThreadState::Runnable); + } else { + KScheduler::SetSchedulerUpdateNeeded(kernel); + } } - ++it; + + return true; + } else { + return false; } - thread_list.push_back(thread); } -void Process::RemoveConditionVariableThread(std::shared_ptr<Thread> thread) { - VAddr cond_var_addr = thread->GetCondVarWaitAddress(); - std::list<std::shared_ptr<Thread>>& thread_list = cond_var_threads[cond_var_addr]; - auto it = thread_list.begin(); - while (it != thread_list.end()) { - const std::shared_ptr<Thread> current_thread = *it; - if (current_thread.get() == thread.get()) { - thread_list.erase(it); - return; - } - ++it; - } +void Process::PinCurrentThread() { + ASSERT(kernel.GlobalSchedulerContext().IsLocked()); + + // Get the current thread. + const s32 core_id = GetCurrentCoreId(kernel); + KThread* cur_thread = GetCurrentThreadPointer(kernel); + + // Pin it. + PinThread(core_id, cur_thread); + cur_thread->Pin(); + + // An update is needed. + KScheduler::SetSchedulerUpdateNeeded(kernel); } -std::vector<std::shared_ptr<Thread>> Process::GetConditionVariableThreads( - const VAddr cond_var_addr) { - std::vector<std::shared_ptr<Thread>> result{}; - std::list<std::shared_ptr<Thread>>& thread_list = cond_var_threads[cond_var_addr]; - auto it = thread_list.begin(); - while (it != thread_list.end()) { - std::shared_ptr<Thread> current_thread = *it; - result.push_back(current_thread); - ++it; - } - return result; +void Process::UnpinCurrentThread() { + ASSERT(kernel.GlobalSchedulerContext().IsLocked()); + + // Get the current thread. + const s32 core_id = GetCurrentCoreId(kernel); + KThread* cur_thread = GetCurrentThreadPointer(kernel); + + // Unpin it. + cur_thread->Unpin(); + UnpinThread(core_id, cur_thread); + + // An update is needed. + KScheduler::SetSchedulerUpdateNeeded(kernel); } -void Process::RegisterThread(const Thread* thread) { +void Process::RegisterThread(const KThread* thread) { thread_list.push_back(thread); } -void Process::UnregisterThread(const Thread* thread) { +void Process::UnregisterThread(const KThread* thread) { thread_list.remove(thread); } -ResultCode Process::ClearSignalState() { - KScopedSchedulerLock lock(system.Kernel()); - if (status == ProcessStatus::Exited) { - LOG_ERROR(Kernel, "called on a terminated process instance."); - return ERR_INVALID_STATE; - } +ResultCode Process::Reset() { + // Lock the process and the scheduler. + KScopedLightLock lk(state_lock); + KScopedSchedulerLock sl{kernel}; - if (!is_signaled) { - LOG_ERROR(Kernel, "called on a process instance that isn't signaled."); - return ERR_INVALID_STATE; - } + // Validate that we're in a state that we can reset. + R_UNLESS(status != ProcessStatus::Exited, ResultInvalidState); + R_UNLESS(is_signaled, ResultInvalidState); + // Clear signaled. is_signaled = false; return RESULT_SUCCESS; } @@ -236,18 +272,29 @@ ResultCode Process::LoadFromMetadata(const FileSys::ProgramMetadata& metadata, system_resource_size = metadata.GetSystemResourceSize(); image_size = code_size; + // Set initial resource limits + resource_limit->SetLimitValue( + LimitableResource::PhysicalMemory, + kernel.MemoryManager().GetSize(KMemoryManager::Pool::Application)); + KScopedResourceReservation memory_reservation(resource_limit, LimitableResource::PhysicalMemory, + code_size + system_resource_size); + if (!memory_reservation.Succeeded()) { + LOG_ERROR(Kernel, "Could not reserve process memory requirements of size {:X} bytes", + code_size + system_resource_size); + return ResultResourceLimitedExceeded; + } // Initialize proces address space if (const ResultCode result{ page_table->InitializeForProcess(metadata.GetAddressSpaceType(), false, 0x8000000, - code_size, Memory::MemoryManager::Pool::Application)}; + code_size, KMemoryManager::Pool::Application)}; result.IsError()) { return result; } // Map process code region - if (const ResultCode result{page_table->MapProcessCode( - page_table->GetCodeRegionStart(), code_size / Memory::PageSize, - Memory::MemoryState::Code, Memory::MemoryPermission::None)}; + if (const ResultCode result{page_table->MapProcessCode(page_table->GetCodeRegionStart(), + code_size / PageSize, KMemoryState::Code, + KMemoryPermission::None)}; result.IsError()) { return result; } @@ -279,22 +326,25 @@ ResultCode Process::LoadFromMetadata(const FileSys::ProgramMetadata& metadata, // Set initial resource limits resource_limit->SetLimitValue( - ResourceType::PhysicalMemory, - kernel.MemoryManager().GetSize(Memory::MemoryManager::Pool::Application)); - resource_limit->SetLimitValue(ResourceType::Threads, 608); - resource_limit->SetLimitValue(ResourceType::Events, 700); - resource_limit->SetLimitValue(ResourceType::TransferMemory, 128); - resource_limit->SetLimitValue(ResourceType::Sessions, 894); - ASSERT(resource_limit->Reserve(ResourceType::PhysicalMemory, code_size)); + LimitableResource::PhysicalMemory, + kernel.MemoryManager().GetSize(KMemoryManager::Pool::Application)); + + resource_limit->SetLimitValue(LimitableResource::Threads, 608); + resource_limit->SetLimitValue(LimitableResource::Events, 700); + resource_limit->SetLimitValue(LimitableResource::TransferMemory, 128); + resource_limit->SetLimitValue(LimitableResource::Sessions, 894); // Create TLS region tls_region_address = CreateTLSRegion(); + memory_reservation.Commit(); return handle_table.SetSize(capabilities.GetHandleTableSize()); } void Process::Run(s32 main_thread_priority, u64 stack_size) { AllocateMainThreadStack(stack_size); + resource_limit->Reserve(LimitableResource::Threads, 1); + resource_limit->Reserve(LimitableResource::PhysicalMemory, main_thread_stack_size); const std::size_t heap_capacity{memory_usage_capacity - main_thread_stack_size - image_size}; ASSERT(!page_table->SetHeapCapacity(heap_capacity).IsError()); @@ -302,14 +352,12 @@ void Process::Run(s32 main_thread_priority, u64 stack_size) { ChangeStatus(ProcessStatus::Running); SetupMainThread(system, *this, main_thread_priority, main_thread_stack_top); - resource_limit->Reserve(ResourceType::Threads, 1); - resource_limit->Reserve(ResourceType::PhysicalMemory, main_thread_stack_size); } void Process::PrepareForTermination() { ChangeStatus(ProcessStatus::Exiting); - const auto stop_threads = [this](const std::vector<std::shared_ptr<Thread>>& thread_list) { + const auto stop_threads = [this](const std::vector<std::shared_ptr<KThread>>& thread_list) { for (auto& thread : thread_list) { if (thread->GetOwnerProcess() != this) continue; @@ -318,10 +366,10 @@ void Process::PrepareForTermination() { continue; // TODO(Subv): When are the other running/ready threads terminated? - ASSERT_MSG(thread->GetStatus() == ThreadStatus::WaitSynch, + ASSERT_MSG(thread->GetState() == ThreadState::Waiting, "Exiting processes with non-waiting threads is currently unimplemented"); - thread->Stop(); + thread->Exit(); } }; @@ -330,6 +378,11 @@ void Process::PrepareForTermination() { FreeTLSRegion(tls_region_address); tls_region_address = 0; + if (resource_limit) { + resource_limit->Release(LimitableResource::PhysicalMemory, + main_thread_stack_size + image_size); + } + ChangeStatus(ProcessStatus::Exited); } @@ -353,22 +406,22 @@ VAddr Process::CreateTLSRegion() { return *tls_page_iter->ReserveSlot(); } - Memory::Page* const tls_page_ptr{kernel.GetUserSlabHeapPages().Allocate()}; + Page* const tls_page_ptr{kernel.GetUserSlabHeapPages().Allocate()}; ASSERT(tls_page_ptr); const VAddr start{page_table->GetKernelMapRegionStart()}; const VAddr size{page_table->GetKernelMapRegionEnd() - start}; const PAddr tls_map_addr{system.DeviceMemory().GetPhysicalAddr(tls_page_ptr)}; - const VAddr tls_page_addr{ - page_table - ->AllocateAndMapMemory(1, Memory::PageSize, true, start, size / Memory::PageSize, - Memory::MemoryState::ThreadLocal, - Memory::MemoryPermission::ReadAndWrite, tls_map_addr) - .ValueOr(0)}; + const VAddr tls_page_addr{page_table + ->AllocateAndMapMemory(1, PageSize, true, start, size / PageSize, + KMemoryState::ThreadLocal, + KMemoryPermission::ReadAndWrite, + tls_map_addr) + .ValueOr(0)}; ASSERT(tls_page_addr); - std::memset(tls_page_ptr, 0, Memory::PageSize); + std::memset(tls_page_ptr, 0, PageSize); tls_pages.emplace_back(tls_page_addr); const auto reserve_result{tls_pages.back().ReserveSlot()}; @@ -395,32 +448,29 @@ void Process::FreeTLSRegion(VAddr tls_address) { void Process::LoadModule(CodeSet code_set, VAddr base_addr) { std::lock_guard lock{HLE::g_hle_lock}; const auto ReprotectSegment = [&](const CodeSet::Segment& segment, - Memory::MemoryPermission permission) { + KMemoryPermission permission) { page_table->SetCodeMemoryPermission(segment.addr + base_addr, segment.size, permission); }; system.Memory().WriteBlock(*this, base_addr, code_set.memory.data(), code_set.memory.size()); - ReprotectSegment(code_set.CodeSegment(), Memory::MemoryPermission::ReadAndExecute); - ReprotectSegment(code_set.RODataSegment(), Memory::MemoryPermission::Read); - ReprotectSegment(code_set.DataSegment(), Memory::MemoryPermission::ReadAndWrite); + ReprotectSegment(code_set.CodeSegment(), KMemoryPermission::ReadAndExecute); + ReprotectSegment(code_set.RODataSegment(), KMemoryPermission::Read); + ReprotectSegment(code_set.DataSegment(), KMemoryPermission::ReadAndWrite); +} + +bool Process::IsSignaled() const { + ASSERT(kernel.GlobalSchedulerContext().IsLocked()); + return is_signaled; } Process::Process(Core::System& system) - : SynchronizationObject{system.Kernel()}, page_table{std::make_unique<Memory::PageTable>( - system)}, - handle_table{system.Kernel()}, address_arbiter{system}, mutex{system}, system{system} {} + : KSynchronizationObject{system.Kernel()}, page_table{std::make_unique<KPageTable>(system)}, + handle_table{system.Kernel()}, address_arbiter{system}, condition_var{system}, + state_lock{system.Kernel()}, system{system} {} Process::~Process() = default; -void Process::Acquire(Thread* thread) { - ASSERT_MSG(!ShouldWait(thread), "Object unavailable!"); -} - -bool Process::ShouldWait(const Thread* thread) const { - return !is_signaled; -} - void Process::ChangeStatus(ProcessStatus new_status) { if (status == new_status) { return; @@ -428,23 +478,22 @@ void Process::ChangeStatus(ProcessStatus new_status) { status = new_status; is_signaled = true; - Signal(); + NotifyAvailable(); } ResultCode Process::AllocateMainThreadStack(std::size_t stack_size) { ASSERT(stack_size); // The kernel always ensures that the given stack size is page aligned. - main_thread_stack_size = Common::AlignUp(stack_size, Memory::PageSize); + main_thread_stack_size = Common::AlignUp(stack_size, PageSize); const VAddr start{page_table->GetStackRegionStart()}; const std::size_t size{page_table->GetStackRegionEnd() - start}; CASCADE_RESULT(main_thread_stack_top, page_table->AllocateAndMapMemory( - main_thread_stack_size / Memory::PageSize, Memory::PageSize, false, start, - size / Memory::PageSize, Memory::MemoryState::Stack, - Memory::MemoryPermission::ReadAndWrite)); + main_thread_stack_size / PageSize, PageSize, false, start, size / PageSize, + KMemoryState::Stack, KMemoryPermission::ReadAndWrite)); main_thread_stack_top += main_thread_stack_size; 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