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Atmosphere/libraries/libmesosphere/include/mesosphere/kern_k_process.hpp

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/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <mesosphere/kern_common.hpp>
#include <mesosphere/kern_select_cpu.hpp>
#include <mesosphere/kern_slab_helpers.hpp>
#include <mesosphere/kern_k_synchronization_object.hpp>
#include <mesosphere/kern_k_handle_table.hpp>
#include <mesosphere/kern_k_thread.hpp>
#include <mesosphere/kern_k_thread_local_page.hpp>
#include <mesosphere/kern_k_shared_memory_info.hpp>
#include <mesosphere/kern_k_beta.hpp>
#include <mesosphere/kern_k_worker_task.hpp>
#include <mesosphere/kern_select_page_table.hpp>
#include <mesosphere/kern_k_condition_variable.hpp>
#include <mesosphere/kern_k_address_arbiter.hpp>
#include <mesosphere/kern_k_capabilities.hpp>
#include <mesosphere/kern_k_wait_object.hpp>
#include <mesosphere/kern_k_dynamic_slab_heap.hpp>
#include <mesosphere/kern_k_page_table_manager.hpp>
namespace ams::kern {
class KProcess final : public KAutoObjectWithSlabHeapAndContainer<KProcess, KSynchronizationObject>, public KWorkerTask {
MESOSPHERE_AUTOOBJECT_TRAITS(KProcess, KSynchronizationObject);
public:
enum State {
State_Created = ams::svc::ProcessState_Created,
State_CreatedAttached = ams::svc::ProcessState_CreatedAttached,
State_Running = ams::svc::ProcessState_Running,
State_Crashed = ams::svc::ProcessState_Crashed,
State_RunningAttached = ams::svc::ProcessState_RunningAttached,
State_Terminating = ams::svc::ProcessState_Terminating,
State_Terminated = ams::svc::ProcessState_Terminated,
State_DebugBreak = ams::svc::ProcessState_DebugBreak,
};
using ThreadList = util::IntrusiveListMemberTraits<&KThread::m_process_list_node>::ListType;
static constexpr size_t AslrAlignment = KernelAslrAlignment;
private:
using SharedMemoryInfoList = util::IntrusiveListBaseTraits<KSharedMemoryInfo>::ListType;
using BetaList = util::IntrusiveListMemberTraits<&KBeta::m_process_list_node>::ListType;
using TLPTree = util::IntrusiveRedBlackTreeBaseTraits<KThreadLocalPage>::TreeType<KThreadLocalPage>;
using TLPIterator = TLPTree::iterator;
private:
KProcessPageTable m_page_table{};
std::atomic<size_t> m_used_kernel_memory_size{};
TLPTree m_fully_used_tlp_tree{};
TLPTree m_partially_used_tlp_tree{};
s32 m_ideal_core_id{};
void *m_attached_object{};
KResourceLimit *m_resource_limit{};
KVirtualAddress m_system_resource_address{};
size_t m_system_resource_num_pages{};
size_t m_memory_release_hint{};
State m_state{};
KLightLock m_state_lock{};
KLightLock m_list_lock{};
KConditionVariable m_cond_var{};
KAddressArbiter m_address_arbiter{};
u64 m_entropy[4]{};
bool m_is_signaled{};
bool m_is_initialized{};
bool m_is_application{};
char m_name[13]{};
std::atomic<u16> m_num_running_threads{};
u32 m_flags{};
KMemoryManager::Pool m_memory_pool{};
s64 m_schedule_count{};
KCapabilities m_capabilities{};
ams::svc::ProgramId m_program_id{};
u64 m_process_id{};
s64 m_creation_time{};
KProcessAddress m_code_address{};
size_t m_code_size{};
size_t m_main_thread_stack_size{};
size_t m_max_process_memory{};
u32 m_version{};
KHandleTable m_handle_table{};
KProcessAddress m_plr_address{};
void *m_plr_heap_address{};
KThread *m_exception_thread{};
ThreadList m_thread_list{};
SharedMemoryInfoList m_shared_memory_list{};
BetaList m_beta_list{};
bool m_is_suspended{};
bool m_is_immortal{};
bool m_is_jit_debug{};
bool m_is_handle_table_initialized{};
ams::svc::DebugEvent m_jit_debug_event_type{};
ams::svc::DebugException m_jit_debug_exception_type{};
uintptr_t m_jit_debug_params[4]{};
u64 m_jit_debug_thread_id{};
KWaitObject m_wait_object{};
KThread *m_running_threads[cpu::NumCores]{};
u64 m_running_thread_idle_counts[cpu::NumCores]{};
KThread *m_pinned_threads[cpu::NumCores]{};
std::atomic<s64> m_cpu_time{};
std::atomic<s64> m_num_process_switches{};
std::atomic<s64> m_num_thread_switches{};
std::atomic<s64> m_num_fpu_switches{};
std::atomic<s64> m_num_supervisor_calls{};
std::atomic<s64> m_num_ipc_messages{};
std::atomic<s64> m_num_ipc_replies{};
std::atomic<s64> m_num_ipc_receives{};
KDynamicPageManager m_dynamic_page_manager{};
KMemoryBlockSlabManager m_memory_block_slab_manager{};
KBlockInfoManager m_block_info_manager{};
KPageTableManager m_page_table_manager{};
private:
Result Initialize(const ams::svc::CreateProcessParameter &params);
Result StartTermination();
void FinishTermination();
ALWAYS_INLINE void PinThread(s32 core_id, KThread *thread) {
MESOSPHERE_ASSERT(0 <= core_id && core_id < static_cast<s32>(cpu::NumCores));
MESOSPHERE_ASSERT(thread != nullptr);
MESOSPHERE_ASSERT(m_pinned_threads[core_id] == nullptr);
m_pinned_threads[core_id] = thread;
}
ALWAYS_INLINE void UnpinThread(s32 core_id, KThread *thread) {
MESOSPHERE_UNUSED(thread);
MESOSPHERE_ASSERT(0 <= core_id && core_id < static_cast<s32>(cpu::NumCores));
MESOSPHERE_ASSERT(thread != nullptr);
MESOSPHERE_ASSERT(m_pinned_threads[core_id] == thread);
m_pinned_threads[core_id] = nullptr;
}
public:
KProcess() { /* ... */ }
virtual ~KProcess() { /* ... */ }
Result Initialize(const ams::svc::CreateProcessParameter &params, const KPageGroup &pg, const u32 *caps, s32 num_caps, KResourceLimit *res_limit, KMemoryManager::Pool pool, bool immortal);
Result Initialize(const ams::svc::CreateProcessParameter &params, svc::KUserPointer<const u32 *> caps, s32 num_caps, KResourceLimit *res_limit, KMemoryManager::Pool pool);
void Exit();
constexpr const char *GetName() const { return m_name; }
constexpr ams::svc::ProgramId GetProgramId() const { return m_program_id; }
constexpr u64 GetProcessId() const { return m_process_id; }
constexpr State GetState() const { return m_state; }
constexpr u64 GetCoreMask() const { return m_capabilities.GetCoreMask(); }
constexpr u64 GetPriorityMask() const { return m_capabilities.GetPriorityMask(); }
constexpr s32 GetIdealCoreId() const { return m_ideal_core_id; }
constexpr void SetIdealCoreId(s32 core_id) { m_ideal_core_id = core_id; }
constexpr bool CheckThreadPriority(s32 prio) const { return ((1ul << prio) & this->GetPriorityMask()) != 0; }
constexpr u32 GetCreateProcessFlags() const { return m_flags; }
constexpr bool Is64Bit() const { return m_flags & ams::svc::CreateProcessFlag_Is64Bit; }
constexpr KProcessAddress GetEntryPoint() const { return m_code_address; }
constexpr size_t GetMainStackSize() const { return m_main_thread_stack_size; }
constexpr KMemoryManager::Pool GetMemoryPool() const { return m_memory_pool; }
constexpr u64 GetRandomEntropy(size_t i) const { return m_entropy[i]; }
constexpr bool IsApplication() const { return m_is_application; }
constexpr bool IsSuspended() const { return m_is_suspended; }
constexpr void SetSuspended(bool suspended) { m_is_suspended = suspended; }
Result Terminate();
constexpr bool IsTerminated() const {
return m_state == State_Terminated;
}
constexpr bool IsAttachedToDebugger() const {
return m_attached_object != nullptr;
}
constexpr bool IsPermittedInterrupt(int32_t interrupt_id) const {
return m_capabilities.IsPermittedInterrupt(interrupt_id);
}
constexpr bool IsPermittedDebug() const {
return m_capabilities.IsPermittedDebug();
}
constexpr bool CanForceDebug() const {
return m_capabilities.CanForceDebug();
}
u32 GetAllocateOption() const { return m_page_table.GetAllocateOption(); }
ThreadList &GetThreadList() { return m_thread_list; }
const ThreadList &GetThreadList() const { return m_thread_list; }
constexpr void *GetDebugObject() const { return m_attached_object; }
KProcess::State SetDebugObject(void *debug_object);
void ClearDebugObject(KProcess::State state);
bool EnterJitDebug(ams::svc::DebugEvent event, ams::svc::DebugException exception, uintptr_t param1 = 0, uintptr_t param2 = 0, uintptr_t param3 = 0, uintptr_t param4 = 0);
KEventInfo *GetJitDebugInfo();
void ClearJitDebugInfo();
bool EnterUserException();
bool LeaveUserException();
bool ReleaseUserException(KThread *thread);
KThread *GetPinnedThread(s32 core_id) const {
MESOSPHERE_ASSERT(0 <= core_id && core_id < static_cast<s32>(cpu::NumCores));
return m_pinned_threads[core_id];
}
void CopySvcPermissionsTo(KThread::StackParameters &sp) {
m_capabilities.CopySvcPermissionsTo(sp);
}
void CopyPinnedSvcPermissionsTo(KThread::StackParameters &sp) {
m_capabilities.CopyPinnedSvcPermissionsTo(sp);
}
void CopyUnpinnedSvcPermissionsTo(KThread::StackParameters &sp) {
m_capabilities.CopyUnpinnedSvcPermissionsTo(sp);
}
void CopyEnterExceptionSvcPermissionsTo(KThread::StackParameters &sp) {
m_capabilities.CopyEnterExceptionSvcPermissionsTo(sp);
}
void CopyLeaveExceptionSvcPermissionsTo(KThread::StackParameters &sp) {
m_capabilities.CopyLeaveExceptionSvcPermissionsTo(sp);
}
constexpr KResourceLimit *GetResourceLimit() const { return m_resource_limit; }
bool ReserveResource(ams::svc::LimitableResource which, s64 value);
bool ReserveResource(ams::svc::LimitableResource which, s64 value, s64 timeout);
void ReleaseResource(ams::svc::LimitableResource which, s64 value);
void ReleaseResource(ams::svc::LimitableResource which, s64 value, s64 hint);
constexpr KLightLock &GetStateLock() { return m_state_lock; }
constexpr KLightLock &GetListLock() { return m_list_lock; }
constexpr KProcessPageTable &GetPageTable() { return m_page_table; }
constexpr const KProcessPageTable &GetPageTable() const { return m_page_table; }
constexpr KHandleTable &GetHandleTable() { return m_handle_table; }
constexpr const KHandleTable &GetHandleTable() const { return m_handle_table; }
KWaitObject *GetWaitObjectPointer() { return std::addressof(m_wait_object); }
size_t GetUsedUserPhysicalMemorySize() const;
size_t GetTotalUserPhysicalMemorySize() const;
size_t GetUsedNonSystemUserPhysicalMemorySize() const;
size_t GetTotalNonSystemUserPhysicalMemorySize() const;
Result AddSharedMemory(KSharedMemory *shmem, KProcessAddress address, size_t size);
void RemoveSharedMemory(KSharedMemory *shmem, KProcessAddress address, size_t size);
Result CreateThreadLocalRegion(KProcessAddress *out);
Result DeleteThreadLocalRegion(KProcessAddress addr);
void *GetThreadLocalRegionPointer(KProcessAddress addr);
constexpr KProcessAddress GetProcessLocalRegionAddress() const { return m_plr_address; }
void AddCpuTime(s64 diff) { m_cpu_time += diff; }
s64 GetCpuTime() { return m_cpu_time; }
constexpr s64 GetScheduledCount() const { return m_schedule_count; }
void IncrementScheduledCount() { ++m_schedule_count; }
void IncrementRunningThreadCount();
void DecrementRunningThreadCount();
size_t GetTotalSystemResourceSize() const { return m_system_resource_num_pages * PageSize; }
size_t GetUsedSystemResourceSize() const {
if (m_system_resource_num_pages == 0) {
return 0;
}
return m_dynamic_page_manager.GetUsed() * PageSize;
}
void SetRunningThread(s32 core, KThread *thread, u64 idle_count) {
m_running_threads[core] = thread;
m_running_thread_idle_counts[core] = idle_count;
}
void ClearRunningThread(KThread *thread) {
for (size_t i = 0; i < util::size(m_running_threads); ++i) {
if (m_running_threads[i] == thread) {
m_running_threads[i] = nullptr;
}
}
}
const KDynamicPageManager &GetDynamicPageManager() const { return m_dynamic_page_manager; }
const KMemoryBlockSlabManager &GetMemoryBlockSlabManager() const { return m_memory_block_slab_manager; }
const KBlockInfoManager &GetBlockInfoManager() const { return m_block_info_manager; }
const KPageTableManager &GetPageTableManager() const { return m_page_table_manager; }
constexpr KThread *GetRunningThread(s32 core) const { return m_running_threads[core]; }
constexpr u64 GetRunningThreadIdleCount(s32 core) const { return m_running_thread_idle_counts[core]; }
void RegisterThread(KThread *thread);
void UnregisterThread(KThread *thread);
Result Run(s32 priority, size_t stack_size);
Result Reset();
void SetDebugBreak() {
if (m_state == State_RunningAttached) {
this->ChangeState(State_DebugBreak);
}
}
void SetAttached() {
if (m_state == State_DebugBreak) {
this->ChangeState(State_RunningAttached);
}
}
Result SetActivity(ams::svc::ProcessActivity activity);
void PinCurrentThread();
void UnpinCurrentThread();
void UnpinThread(KThread *thread);
Result SignalToAddress(KProcessAddress address) {
return m_cond_var.SignalToAddress(address);
}
Result WaitForAddress(ams::svc::Handle handle, KProcessAddress address, u32 tag) {
return m_cond_var.WaitForAddress(handle, address, tag);
}
void SignalConditionVariable(uintptr_t cv_key, int32_t count) {
return m_cond_var.Signal(cv_key, count);
}
Result WaitConditionVariable(KProcessAddress address, uintptr_t cv_key, u32 tag, s64 ns) {
return m_cond_var.Wait(address, cv_key, tag, ns);
}
Result SignalAddressArbiter(uintptr_t address, ams::svc::SignalType signal_type, s32 value, s32 count) {
return m_address_arbiter.SignalToAddress(address, signal_type, value, count);
}
Result WaitAddressArbiter(uintptr_t address, ams::svc::ArbitrationType arb_type, s32 value, s64 timeout) {
return m_address_arbiter.WaitForAddress(address, arb_type, value, timeout);
}
Result GetThreadList(s32 *out_num_threads, ams::kern::svc::KUserPointer<u64 *> out_thread_ids, s32 max_out_count);
static KProcess *GetProcessFromId(u64 process_id);
static Result GetProcessList(s32 *out_num_processes, ams::kern::svc::KUserPointer<u64 *> out_process_ids, s32 max_out_count);
static void Switch(KProcess *cur_process, KProcess *next_process) {
MESOSPHERE_UNUSED(cur_process);
/* Update the current page table. */
if (next_process) {
next_process->GetPageTable().Activate(next_process->GetProcessId());
} else {
Kernel::GetKernelPageTable().Activate();
}
}
public:
/* Overridden parent functions. */
virtual bool IsInitialized() const override { return m_is_initialized; }
static void PostDestroy(uintptr_t arg) { MESOSPHERE_UNUSED(arg); /* ... */ }
virtual void Finalize() override;
virtual u64 GetId() const override final { return this->GetProcessId(); }
virtual bool IsSignaled() const override {
MESOSPHERE_ASSERT_THIS();
MESOSPHERE_ASSERT(KScheduler::IsSchedulerLockedByCurrentThread());
return m_is_signaled;
}
virtual void DoWorkerTask() override;
private:
void ChangeState(State new_state) {
if (m_state != new_state) {
m_state = new_state;
m_is_signaled = true;
this->NotifyAvailable();
}
}
ALWAYS_INLINE Result InitializeHandleTable(s32 size) {
/* Try to initialize the handle table. */
R_TRY(m_handle_table.Initialize(size));
/* We succeeded, so note that we did. */
m_is_handle_table_initialized = true;
return ResultSuccess();
}
ALWAYS_INLINE void FinalizeHandleTable() {
/* Finalize the table. */
m_handle_table.Finalize();
/* Note that the table is finalized. */
m_is_handle_table_initialized = false;
}
};
}
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