Merge pull request #5848 from ogniK5377/k-resourcelimit

kernel: Rewrite resource limit to be more accurate
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bunnei 2021-02-03 14:53:25 -08:00 committed by GitHub
commit b0c9752663
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13 changed files with 343 additions and 230 deletions

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@ -160,9 +160,12 @@ add_library(core STATIC
hle/kernel/k_affinity_mask.h
hle/kernel/k_condition_variable.cpp
hle/kernel/k_condition_variable.h
hle/kernel/k_light_condition_variable.h
hle/kernel/k_light_lock.cpp
hle/kernel/k_light_lock.h
hle/kernel/k_priority_queue.h
hle/kernel/k_resource_limit.cpp
hle/kernel/k_resource_limit.h
hle/kernel/k_scheduler.cpp
hle/kernel/k_scheduler.h
hle/kernel/k_scheduler_lock.h
@ -203,8 +206,6 @@ add_library(core STATIC
hle/kernel/process_capability.h
hle/kernel/readable_event.cpp
hle/kernel/readable_event.h
hle/kernel/resource_limit.cpp
hle/kernel/resource_limit.h
hle/kernel/server_port.cpp
hle/kernel/server_port.h
hle/kernel/server_session.cpp

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@ -0,0 +1,57 @@
// Copyright 2020 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
// This file references various implementation details from Atmosphere, an open-source firmware for
// the Nintendo Switch. Copyright 2018-2020 Atmosphere-NX.
#pragma once
#include "common/common_types.h"
#include "core/hle/kernel/k_scheduler.h"
#include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
#include "core/hle/kernel/k_thread_queue.h"
#include "core/hle/kernel/time_manager.h"
namespace Kernel {
class KernelCore;
class KLightConditionVariable {
public:
explicit KLightConditionVariable(KernelCore& kernel) : thread_queue(kernel), kernel(kernel) {}
void Wait(KLightLock* lock, s64 timeout = -1) {
WaitImpl(lock, timeout);
lock->Lock();
}
void Broadcast() {
KScopedSchedulerLock lk{kernel};
while (thread_queue.WakeupFrontThread() != nullptr) {
// We want to signal all threads, and so should continue waking up until there's nothing
// to wake.
}
}
private:
void WaitImpl(KLightLock* lock, s64 timeout) {
KThread* owner = GetCurrentThreadPointer(kernel);
// Sleep the thread.
{
KScopedSchedulerLockAndSleep lk(kernel, owner, timeout);
lock->Unlock();
if (!thread_queue.SleepThread(owner)) {
lk.CancelSleep();
return;
}
}
// Cancel the task that the sleep setup.
kernel.TimeManager().UnscheduleTimeEvent(owner);
}
KThreadQueue thread_queue;
KernelCore& kernel;
};
} // namespace Kernel

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@ -0,0 +1,152 @@
// Copyright 2020 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
// This file references various implementation details from Atmosphere, an open-source firmware for
// the Nintendo Switch. Copyright 2018-2020 Atmosphere-NX.
#include "common/assert.h"
#include "core/core.h"
#include "core/core_timing.h"
#include "core/core_timing_util.h"
#include "core/hle/kernel/k_resource_limit.h"
#include "core/hle/kernel/svc_results.h"
namespace Kernel {
constexpr s64 DefaultTimeout = 10000000000; // 10 seconds
KResourceLimit::KResourceLimit(KernelCore& kernel, Core::System& system)
: Object{kernel}, lock{kernel}, cond_var{kernel}, kernel{kernel}, system(system) {}
KResourceLimit::~KResourceLimit() = default;
s64 KResourceLimit::GetLimitValue(LimitableResource which) const {
const auto index = static_cast<std::size_t>(which);
s64 value{};
{
KScopedLightLock lk{lock};
value = limit_values[index];
ASSERT(value >= 0);
ASSERT(current_values[index] <= limit_values[index]);
ASSERT(current_hints[index] <= current_values[index]);
}
return value;
}
s64 KResourceLimit::GetCurrentValue(LimitableResource which) const {
const auto index = static_cast<std::size_t>(which);
s64 value{};
{
KScopedLightLock lk{lock};
value = current_values[index];
ASSERT(value >= 0);
ASSERT(current_values[index] <= limit_values[index]);
ASSERT(current_hints[index] <= current_values[index]);
}
return value;
}
s64 KResourceLimit::GetPeakValue(LimitableResource which) const {
const auto index = static_cast<std::size_t>(which);
s64 value{};
{
KScopedLightLock lk{lock};
value = peak_values[index];
ASSERT(value >= 0);
ASSERT(current_values[index] <= limit_values[index]);
ASSERT(current_hints[index] <= current_values[index]);
}
return value;
}
s64 KResourceLimit::GetFreeValue(LimitableResource which) const {
const auto index = static_cast<std::size_t>(which);
s64 value{};
{
KScopedLightLock lk(lock);
ASSERT(current_values[index] >= 0);
ASSERT(current_values[index] <= limit_values[index]);
ASSERT(current_hints[index] <= current_values[index]);
value = limit_values[index] - current_values[index];
}
return value;
}
ResultCode KResourceLimit::SetLimitValue(LimitableResource which, s64 value) {
const auto index = static_cast<std::size_t>(which);
KScopedLightLock lk(lock);
R_UNLESS(current_values[index] <= value, Svc::ResultInvalidState);
limit_values[index] = value;
return RESULT_SUCCESS;
}
bool KResourceLimit::Reserve(LimitableResource which, s64 value) {
return Reserve(which, value, system.CoreTiming().GetGlobalTimeNs().count() + DefaultTimeout);
}
bool KResourceLimit::Reserve(LimitableResource which, s64 value, s64 timeout) {
ASSERT(value >= 0);
const auto index = static_cast<std::size_t>(which);
KScopedLightLock lk(lock);
ASSERT(current_hints[index] <= current_values[index]);
if (current_hints[index] >= limit_values[index]) {
return false;
}
// Loop until we reserve or run out of time.
while (true) {
ASSERT(current_values[index] <= limit_values[index]);
ASSERT(current_hints[index] <= current_values[index]);
// If we would overflow, don't allow to succeed.
if (current_values[index] + value <= current_values[index]) {
break;
}
if (current_values[index] + value <= limit_values[index]) {
current_values[index] += value;
current_hints[index] += value;
peak_values[index] = std::max(peak_values[index], current_values[index]);
return true;
}
if (current_hints[index] + value <= limit_values[index] &&
(timeout < 0 || system.CoreTiming().GetGlobalTimeNs().count() < timeout)) {
waiter_count++;
cond_var.Wait(&lock, timeout);
waiter_count--;
} else {
break;
}
}
return false;
}
void KResourceLimit::Release(LimitableResource which, s64 value) {
Release(which, value, value);
}
void KResourceLimit::Release(LimitableResource which, s64 value, s64 hint) {
ASSERT(value >= 0);
ASSERT(hint >= 0);
const auto index = static_cast<std::size_t>(which);
KScopedLightLock lk(lock);
ASSERT(current_values[index] <= limit_values[index]);
ASSERT(current_hints[index] <= current_values[index]);
ASSERT(value <= current_values[index]);
ASSERT(hint <= current_hints[index]);
current_values[index] -= value;
current_hints[index] -= hint;
if (waiter_count != 0) {
cond_var.Broadcast();
}
}
} // namespace Kernel

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@ -0,0 +1,81 @@
// Copyright 2020 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
// This file references various implementation details from Atmosphere, an open-source firmware for
// the Nintendo Switch. Copyright 2018-2020 Atmosphere-NX.
#pragma once
#include <array>
#include "common/common_types.h"
#include "core/hle/kernel/k_light_condition_variable.h"
#include "core/hle/kernel/k_light_lock.h"
#include "core/hle/kernel/object.h"
union ResultCode;
namespace Core {
class System;
}
namespace Kernel {
class KernelCore;
enum class LimitableResource : u32 {
PhysicalMemory = 0,
Threads = 1,
Events = 2,
TransferMemory = 3,
Sessions = 4,
Count,
};
constexpr bool IsValidResourceType(LimitableResource type) {
return type < LimitableResource::Count;
}
class KResourceLimit final : public Object {
public:
explicit KResourceLimit(KernelCore& kernel, Core::System& system);
~KResourceLimit();
s64 GetLimitValue(LimitableResource which) const;
s64 GetCurrentValue(LimitableResource which) const;
s64 GetPeakValue(LimitableResource which) const;
s64 GetFreeValue(LimitableResource which) const;
ResultCode SetLimitValue(LimitableResource which, s64 value);
bool Reserve(LimitableResource which, s64 value);
bool Reserve(LimitableResource which, s64 value, s64 timeout);
void Release(LimitableResource which, s64 value);
void Release(LimitableResource which, s64 value, s64 hint);
std::string GetTypeName() const override {
return "KResourceLimit";
}
std::string GetName() const override {
return GetTypeName();
}
static constexpr HandleType HANDLE_TYPE = HandleType::ResourceLimit;
HandleType GetHandleType() const override {
return HANDLE_TYPE;
}
virtual void Finalize() override {}
private:
using ResourceArray = std::array<s64, static_cast<std::size_t>(LimitableResource::Count)>;
ResourceArray limit_values{};
ResourceArray current_values{};
ResourceArray current_hints{};
ResourceArray peak_values{};
mutable KLightLock lock;
s32 waiter_count{};
KLightConditionVariable cond_var;
KernelCore& kernel;
Core::System& system;
};
} // namespace Kernel

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@ -21,6 +21,7 @@
#include "core/hle/kernel/errors.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/k_condition_variable.h"
#include "core/hle/kernel/k_resource_limit.h"
#include "core/hle/kernel/k_scheduler.h"
#include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
#include "core/hle/kernel/k_thread.h"
@ -29,7 +30,6 @@
#include "core/hle/kernel/memory/memory_layout.h"
#include "core/hle/kernel/object.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/resource_limit.h"
#include "core/hle/kernel/svc_results.h"
#include "core/hle/kernel/time_manager.h"
#include "core/hle/result.h"
@ -247,7 +247,7 @@ void KThread::Finalize() {
// Decrement the parent process's thread count.
if (parent != nullptr) {
parent->DecrementThreadCount();
parent->GetResourceLimit()->Release(ResourceType::Threads, 1);
parent->GetResourceLimit()->Release(LimitableResource::Threads, 1);
}
}

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@ -28,6 +28,7 @@
#include "core/hle/kernel/client_port.h"
#include "core/hle/kernel/errors.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/k_resource_limit.h"
#include "core/hle/kernel/k_scheduler.h"
#include "core/hle/kernel/k_thread.h"
#include "core/hle/kernel/kernel.h"
@ -36,7 +37,6 @@
#include "core/hle/kernel/memory/slab_heap.h"
#include "core/hle/kernel/physical_core.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/resource_limit.h"
#include "core/hle/kernel/service_thread.h"
#include "core/hle/kernel/shared_memory.h"
#include "core/hle/kernel/time_manager.h"
@ -66,7 +66,7 @@ struct KernelCore::Impl {
is_phantom_mode_for_singlecore = false;
InitializePhysicalCores();
InitializeSystemResourceLimit(kernel);
InitializeSystemResourceLimit(kernel, system);
InitializeMemoryLayout();
InitializePreemption(kernel);
InitializeSchedulers();
@ -131,19 +131,19 @@ struct KernelCore::Impl {
}
// Creates the default system resource limit
void InitializeSystemResourceLimit(KernelCore& kernel) {
system_resource_limit = ResourceLimit::Create(kernel);
void InitializeSystemResourceLimit(KernelCore& kernel, Core::System& system) {
system_resource_limit = std::make_shared<KResourceLimit>(kernel, system);
// If setting the default system values fails, then something seriously wrong has occurred.
ASSERT(system_resource_limit->SetLimitValue(ResourceType::PhysicalMemory, 0x100000000)
ASSERT(system_resource_limit->SetLimitValue(LimitableResource::PhysicalMemory, 0x100000000)
.IsSuccess());
ASSERT(system_resource_limit->SetLimitValue(ResourceType::Threads, 800).IsSuccess());
ASSERT(system_resource_limit->SetLimitValue(ResourceType::Events, 700).IsSuccess());
ASSERT(system_resource_limit->SetLimitValue(ResourceType::TransferMemory, 200).IsSuccess());
ASSERT(system_resource_limit->SetLimitValue(ResourceType::Sessions, 900).IsSuccess());
ASSERT(system_resource_limit->SetLimitValue(LimitableResource::Threads, 800).IsSuccess());
ASSERT(system_resource_limit->SetLimitValue(LimitableResource::Events, 700).IsSuccess());
ASSERT(system_resource_limit->SetLimitValue(LimitableResource::TransferMemory, 200)
.IsSuccess());
ASSERT(system_resource_limit->SetLimitValue(LimitableResource::Sessions, 900).IsSuccess());
if (!system_resource_limit->Reserve(ResourceType::PhysicalMemory, 0) ||
!system_resource_limit->Reserve(ResourceType::PhysicalMemory, 0x60000)) {
if (!system_resource_limit->Reserve(LimitableResource::PhysicalMemory, 0x60000)) {
UNREACHABLE();
}
}
@ -320,7 +320,7 @@ struct KernelCore::Impl {
std::unique_ptr<Kernel::GlobalSchedulerContext> global_scheduler_context;
Kernel::TimeManager time_manager;
std::shared_ptr<ResourceLimit> system_resource_limit;
std::shared_ptr<KResourceLimit> system_resource_limit;
std::shared_ptr<Core::Timing::EventType> preemption_event;
@ -390,7 +390,7 @@ void KernelCore::Shutdown() {
impl->Shutdown();
}
std::shared_ptr<ResourceLimit> KernelCore::GetSystemResourceLimit() const {
std::shared_ptr<KResourceLimit> KernelCore::GetSystemResourceLimit() const {
return impl->system_resource_limit;
}

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@ -38,7 +38,7 @@ class GlobalSchedulerContext;
class HandleTable;
class PhysicalCore;
class Process;
class ResourceLimit;
class KResourceLimit;
class KScheduler;
class SharedMemory;
class ServiceThread;
@ -85,7 +85,7 @@ public:
void Shutdown();
/// Retrieves a shared pointer to the system resource limit instance.
std::shared_ptr<ResourceLimit> GetSystemResourceLimit() const;
std::shared_ptr<KResourceLimit> GetSystemResourceLimit() const;
/// Retrieves a shared pointer to a Thread instance within the thread wakeup handle table.
std::shared_ptr<KThread> RetrieveThreadFromGlobalHandleTable(Handle handle) const;

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@ -7,6 +7,7 @@
#include "common/scope_exit.h"
#include "core/core.h"
#include "core/hle/kernel/errors.h"
#include "core/hle/kernel/k_resource_limit.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/memory/address_space_info.h"
#include "core/hle/kernel/memory/memory_block.h"
@ -15,7 +16,6 @@
#include "core/hle/kernel/memory/page_table.h"
#include "core/hle/kernel/memory/system_control.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/resource_limit.h"
#include "core/memory.h"
namespace Kernel::Memory {
@ -414,7 +414,7 @@ ResultCode PageTable::MapPhysicalMemory(VAddr addr, std::size_t size) {
const std::size_t remaining_pages{remaining_size / PageSize};
if (process->GetResourceLimit() &&
!process->GetResourceLimit()->Reserve(ResourceType::PhysicalMemory, remaining_size)) {
!process->GetResourceLimit()->Reserve(LimitableResource::PhysicalMemory, remaining_size)) {
return ERR_RESOURCE_LIMIT_EXCEEDED;
}
@ -422,7 +422,7 @@ ResultCode PageTable::MapPhysicalMemory(VAddr addr, std::size_t size) {
{
auto block_guard = detail::ScopeExit([&] {
system.Kernel().MemoryManager().Free(page_linked_list, remaining_pages, memory_pool);
process->GetResourceLimit()->Release(ResourceType::PhysicalMemory, remaining_size);
process->GetResourceLimit()->Release(LimitableResource::PhysicalMemory, remaining_size);
});
CASCADE_CODE(system.Kernel().MemoryManager().Allocate(page_linked_list, remaining_pages,
@ -474,7 +474,7 @@ ResultCode PageTable::UnmapPhysicalMemory(VAddr addr, std::size_t size) {
CASCADE_CODE(UnmapMemory(addr, size));
auto process{system.Kernel().CurrentProcess()};
process->GetResourceLimit()->Release(ResourceType::PhysicalMemory, mapped_size);
process->GetResourceLimit()->Release(LimitableResource::PhysicalMemory, mapped_size);
physical_memory_usage -= mapped_size;
return RESULT_SUCCESS;
@ -783,7 +783,7 @@ ResultVal<VAddr> PageTable::SetHeapSize(std::size_t size) {
auto process{system.Kernel().CurrentProcess()};
if (process->GetResourceLimit() && delta != 0 &&
!process->GetResourceLimit()->Reserve(ResourceType::PhysicalMemory, delta)) {
!process->GetResourceLimit()->Reserve(LimitableResource::PhysicalMemory, delta)) {
return ERR_RESOURCE_LIMIT_EXCEEDED;
}

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@ -15,6 +15,7 @@
#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_resource_limit.h"
#include "core/hle/kernel/k_scheduler.h"
#include "core/hle/kernel/k_thread.h"
#include "core/hle/kernel/kernel.h"
@ -22,7 +23,6 @@
#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/lock.h"
#include "core/memory.h"
#include "core/settings.h"
@ -116,7 +116,7 @@ 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);
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()
@ -132,7 +132,7 @@ 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;
}
@ -154,7 +154,7 @@ void Process::DecrementThreadCount() {
}
u64 Process::GetTotalPhysicalMemoryAvailable() const {
const u64 capacity{resource_limit->GetCurrentResourceValue(ResourceType::PhysicalMemory) +
const u64 capacity{resource_limit->GetFreeValue(LimitableResource::PhysicalMemory) +
page_table->GetTotalHeapSize() + GetSystemResourceSize() + image_size +
main_thread_stack_size};
@ -308,13 +308,13 @@ ResultCode Process::LoadFromMetadata(const FileSys::ProgramMetadata& metadata,
// Set initial resource limits
resource_limit->SetLimitValue(
ResourceType::PhysicalMemory,
LimitableResource::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));
resource_limit->SetLimitValue(LimitableResource::Threads, 608);
resource_limit->SetLimitValue(LimitableResource::Events, 700);
resource_limit->SetLimitValue(LimitableResource::TransferMemory, 128);
resource_limit->SetLimitValue(LimitableResource::Sessions, 894);
ASSERT(resource_limit->Reserve(LimitableResource::PhysicalMemory, code_size));
// Create TLS region
tls_region_address = CreateTLSRegion();
@ -331,8 +331,8 @@ 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);
resource_limit->Reserve(LimitableResource::Threads, 1);
resource_limit->Reserve(LimitableResource::PhysicalMemory, main_thread_stack_size);
}
void Process::PrepareForTermination() {

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@ -29,7 +29,7 @@ class ProgramMetadata;
namespace Kernel {
class KernelCore;
class ResourceLimit;
class KResourceLimit;
class KThread;
class TLSPage;
@ -170,7 +170,7 @@ public:
}
/// Gets the resource limit descriptor for this process
std::shared_ptr<ResourceLimit> GetResourceLimit() const;
std::shared_ptr<KResourceLimit> GetResourceLimit() const;
/// Gets the ideal CPU core ID for this process
u8 GetIdealCoreId() const {
@ -402,7 +402,7 @@ private:
u32 system_resource_size = 0;
/// Resource limit descriptor for this process
std::shared_ptr<ResourceLimit> resource_limit;
std::shared_ptr<KResourceLimit> resource_limit;
/// The ideal CPU core for this process, threads are scheduled on this core by default.
u8 ideal_core = 0;

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@ -1,73 +0,0 @@
// Copyright 2015 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "core/hle/kernel/errors.h"
#include "core/hle/kernel/resource_limit.h"
#include "core/hle/result.h"
namespace Kernel {
namespace {
constexpr std::size_t ResourceTypeToIndex(ResourceType type) {
return static_cast<std::size_t>(type);
}
} // Anonymous namespace
ResourceLimit::ResourceLimit(KernelCore& kernel) : Object{kernel} {}
ResourceLimit::~ResourceLimit() = default;
bool ResourceLimit::Reserve(ResourceType resource, s64 amount) {
return Reserve(resource, amount, 10000000000);
}
bool ResourceLimit::Reserve(ResourceType resource, s64 amount, u64 timeout) {
const std::size_t index{ResourceTypeToIndex(resource)};
s64 new_value = current[index] + amount;
if (new_value > limit[index] && available[index] + amount <= limit[index]) {
// TODO(bunnei): This is wrong for multicore, we should wait the calling thread for timeout
new_value = current[index] + amount;
}
if (new_value <= limit[index]) {
current[index] = new_value;
return true;
}
return false;
}
void ResourceLimit::Release(ResourceType resource, u64 amount) {
Release(resource, amount, amount);
}
void ResourceLimit::Release(ResourceType resource, u64 used_amount, u64 available_amount) {
const std::size_t index{ResourceTypeToIndex(resource)};
current[index] -= used_amount;
available[index] -= available_amount;
}
std::shared_ptr<ResourceLimit> ResourceLimit::Create(KernelCore& kernel) {
return std::make_shared<ResourceLimit>(kernel);
}
s64 ResourceLimit::GetCurrentResourceValue(ResourceType resource) const {
return limit.at(ResourceTypeToIndex(resource)) - current.at(ResourceTypeToIndex(resource));
}
s64 ResourceLimit::GetMaxResourceValue(ResourceType resource) const {
return limit.at(ResourceTypeToIndex(resource));
}
ResultCode ResourceLimit::SetLimitValue(ResourceType resource, s64 value) {
const std::size_t index{ResourceTypeToIndex(resource)};
if (current[index] <= value) {
limit[index] = value;
return RESULT_SUCCESS;
} else {
LOG_ERROR(Kernel, "Limit value is too large! resource={}, value={}, index={}", resource,
value, index);
return ERR_INVALID_STATE;
}
}
} // namespace Kernel

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@ -1,106 +0,0 @@
// Copyright 2015 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <memory>
#include "common/common_types.h"
#include "core/hle/kernel/object.h"
union ResultCode;
namespace Kernel {
class KernelCore;
enum class ResourceType : u32 {
PhysicalMemory,
Threads,
Events,
TransferMemory,
Sessions,
// Used as a count, not an actual type.
ResourceTypeCount
};
constexpr bool IsValidResourceType(ResourceType type) {
return type < ResourceType::ResourceTypeCount;
}
class ResourceLimit final : public Object {
public:
explicit ResourceLimit(KernelCore& kernel);
~ResourceLimit() override;
/// Creates a resource limit object.
static std::shared_ptr<ResourceLimit> Create(KernelCore& kernel);
std::string GetTypeName() const override {
return "ResourceLimit";
}
std::string GetName() const override {
return GetTypeName();
}
static constexpr HandleType HANDLE_TYPE = HandleType::ResourceLimit;
HandleType GetHandleType() const override {
return HANDLE_TYPE;
}
bool Reserve(ResourceType resource, s64 amount);
bool Reserve(ResourceType resource, s64 amount, u64 timeout);
void Release(ResourceType resource, u64 amount);
void Release(ResourceType resource, u64 used_amount, u64 available_amount);
/**
* Gets the current value for the specified resource.
* @param resource Requested resource type
* @returns The current value of the resource type
*/
s64 GetCurrentResourceValue(ResourceType resource) const;
/**
* Gets the max value for the specified resource.
* @param resource Requested resource type
* @returns The max value of the resource type
*/
s64 GetMaxResourceValue(ResourceType resource) const;
/**
* Sets the limit value for a given resource type.
*
* @param resource The resource type to apply the limit to.
* @param value The limit to apply to the given resource type.
*
* @return A result code indicating if setting the limit value
* was successful or not.
*
* @note The supplied limit value *must* be greater than or equal to
* the current resource value for the given resource type,
* otherwise ERR_INVALID_STATE will be returned.
*/
ResultCode SetLimitValue(ResourceType resource, s64 value);
void Finalize() override {}
private:
// TODO(Subv): Increment resource limit current values in their respective Kernel::T::Create
// functions
//
// Currently we have no way of distinguishing if a Create was called by the running application,
// or by a service module. Approach this once we have separated the service modules into their
// own processes
using ResourceArray =
std::array<s64, static_cast<std::size_t>(ResourceType::ResourceTypeCount)>;
ResourceArray limit{};
ResourceArray current{};
ResourceArray available{};
};
} // namespace Kernel

View File

@ -26,6 +26,7 @@
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/k_address_arbiter.h"
#include "core/hle/kernel/k_condition_variable.h"
#include "core/hle/kernel/k_resource_limit.h"
#include "core/hle/kernel/k_scheduler.h"
#include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
#include "core/hle/kernel/k_synchronization_object.h"
@ -37,7 +38,6 @@
#include "core/hle/kernel/physical_core.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/readable_event.h"
#include "core/hle/kernel/resource_limit.h"
#include "core/hle/kernel/shared_memory.h"
#include "core/hle/kernel/svc.h"
#include "core/hle/kernel/svc_results.h"
@ -141,7 +141,7 @@ enum class ResourceLimitValueType {
ResultVal<s64> RetrieveResourceLimitValue(Core::System& system, Handle resource_limit,
u32 resource_type, ResourceLimitValueType value_type) {
std::lock_guard lock{HLE::g_hle_lock};
const auto type = static_cast<ResourceType>(resource_type);
const auto type = static_cast<LimitableResource>(resource_type);
if (!IsValidResourceType(type)) {
LOG_ERROR(Kernel_SVC, "Invalid resource limit type: '{}'", resource_type);
return ERR_INVALID_ENUM_VALUE;
@ -151,7 +151,7 @@ ResultVal<s64> RetrieveResourceLimitValue(Core::System& system, Handle resource_
ASSERT(current_process != nullptr);
const auto resource_limit_object =
current_process->GetHandleTable().Get<ResourceLimit>(resource_limit);
current_process->GetHandleTable().Get<KResourceLimit>(resource_limit);
if (!resource_limit_object) {
LOG_ERROR(Kernel_SVC, "Handle to non-existent resource limit instance used. Handle={:08X}",
resource_limit);
@ -159,10 +159,10 @@ ResultVal<s64> RetrieveResourceLimitValue(Core::System& system, Handle resource_
}
if (value_type == ResourceLimitValueType::CurrentValue) {
return MakeResult(resource_limit_object->GetCurrentResourceValue(type));
return MakeResult(resource_limit_object->GetCurrentValue(type));
}
return MakeResult(resource_limit_object->GetMaxResourceValue(type));
return MakeResult(resource_limit_object->GetLimitValue(type));
}
} // Anonymous namespace
@ -312,7 +312,7 @@ static ResultCode ConnectToNamedPort(Core::System& system, Handle* out_handle,
return ERR_NOT_FOUND;
}
ASSERT(kernel.CurrentProcess()->GetResourceLimit()->Reserve(ResourceType::Sessions, 1));
ASSERT(kernel.CurrentProcess()->GetResourceLimit()->Reserve(LimitableResource::Sessions, 1));
auto client_port = it->second;
@ -1450,7 +1450,8 @@ static ResultCode CreateThread(Core::System& system, Handle* out_handle, VAddr e
Svc::ResultInvalidPriority);
R_UNLESS(process.CheckThreadPriority(priority), Svc::ResultInvalidPriority);
ASSERT(process.GetResourceLimit()->Reserve(ResourceType::Threads, 1));
ASSERT(process.GetResourceLimit()->Reserve(
LimitableResource::Threads, 1, system.CoreTiming().GetGlobalTimeNs().count() + 100000000));
std::shared_ptr<KThread> thread;
{
@ -1972,7 +1973,7 @@ static ResultCode CreateResourceLimit(Core::System& system, Handle* out_handle)
LOG_DEBUG(Kernel_SVC, "called");
auto& kernel = system.Kernel();
auto resource_limit = ResourceLimit::Create(kernel);
auto resource_limit = std::make_shared<KResourceLimit>(kernel, system);
auto* const current_process = kernel.CurrentProcess();
ASSERT(current_process != nullptr);
@ -2019,7 +2020,7 @@ static ResultCode SetResourceLimitLimitValue(Core::System& system, Handle resour
LOG_DEBUG(Kernel_SVC, "called. Handle={:08X}, Resource type={}, Value={}", resource_limit,
resource_type, value);
const auto type = static_cast<ResourceType>(resource_type);
const auto type = static_cast<LimitableResource>(resource_type);
if (!IsValidResourceType(type)) {
LOG_ERROR(Kernel_SVC, "Invalid resource limit type: '{}'", resource_type);
return ERR_INVALID_ENUM_VALUE;
@ -2029,7 +2030,7 @@ static ResultCode SetResourceLimitLimitValue(Core::System& system, Handle resour
ASSERT(current_process != nullptr);
auto resource_limit_object =
current_process->GetHandleTable().Get<ResourceLimit>(resource_limit);
current_process->GetHandleTable().Get<KResourceLimit>(resource_limit);
if (!resource_limit_object) {
LOG_ERROR(Kernel_SVC, "Handle to non-existent resource limit instance used. Handle={:08X}",
resource_limit);
@ -2041,8 +2042,8 @@ static ResultCode SetResourceLimitLimitValue(Core::System& system, Handle resour
LOG_ERROR(
Kernel_SVC,
"Attempted to lower resource limit ({}) for category '{}' below its current value ({})",
resource_limit_object->GetMaxResourceValue(type), resource_type,
resource_limit_object->GetCurrentResourceValue(type));
resource_limit_object->GetLimitValue(type), resource_type,
resource_limit_object->GetCurrentValue(type));
return set_result;
}