kernel: KScopedReservation implementation
This implements KScopedReservation, allowing resource limit reservations to be more HW accurate, and release upon failure without requiring too many conditionals.
This commit is contained in:
parent
37939482fb
commit
5fa6b15215
|
@ -174,6 +174,7 @@ add_library(core STATIC
|
||||||
hle/kernel/k_scheduler.h
|
hle/kernel/k_scheduler.h
|
||||||
hle/kernel/k_scheduler_lock.h
|
hle/kernel/k_scheduler_lock.h
|
||||||
hle/kernel/k_scoped_lock.h
|
hle/kernel/k_scoped_lock.h
|
||||||
|
hle/kernel/k_scoped_resource_reservation.h
|
||||||
hle/kernel/k_scoped_scheduler_lock_and_sleep.h
|
hle/kernel/k_scoped_scheduler_lock_and_sleep.h
|
||||||
hle/kernel/k_synchronization_object.cpp
|
hle/kernel/k_synchronization_object.cpp
|
||||||
hle/kernel/k_synchronization_object.h
|
hle/kernel/k_synchronization_object.h
|
||||||
|
|
|
@ -0,0 +1,67 @@
|
||||||
|
// Copyright 2021 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_resource_limit.h"
|
||||||
|
#include "core/hle/kernel/process.h"
|
||||||
|
|
||||||
|
namespace Kernel {
|
||||||
|
|
||||||
|
class KScopedResourceReservation {
|
||||||
|
public:
|
||||||
|
explicit KScopedResourceReservation(std::shared_ptr<KResourceLimit> l, LimitableResource r,
|
||||||
|
s64 v, s64 timeout)
|
||||||
|
: resource_limit(std::move(l)), value(v), resource(r) {
|
||||||
|
if (resource_limit && value) {
|
||||||
|
success = resource_limit->Reserve(resource, value, timeout);
|
||||||
|
} else {
|
||||||
|
success = true;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
explicit KScopedResourceReservation(std::shared_ptr<KResourceLimit> l, LimitableResource r,
|
||||||
|
s64 v = 1)
|
||||||
|
: resource_limit(std::move(l)), value(v), resource(r) {
|
||||||
|
if (resource_limit && value) {
|
||||||
|
success = resource_limit->Reserve(resource, value);
|
||||||
|
} else {
|
||||||
|
success = true;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
explicit KScopedResourceReservation(const Process* p, LimitableResource r, s64 v, s64 t)
|
||||||
|
: KScopedResourceReservation(p->GetResourceLimit(), r, v, t) {}
|
||||||
|
|
||||||
|
explicit KScopedResourceReservation(const Process* p, LimitableResource r, s64 v = 1)
|
||||||
|
: KScopedResourceReservation(p->GetResourceLimit(), r, v) {}
|
||||||
|
|
||||||
|
~KScopedResourceReservation() noexcept {
|
||||||
|
if (resource_limit && value && success) {
|
||||||
|
// resource was not committed, release the reservation.
|
||||||
|
resource_limit->Release(resource, value);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/// Commit the resource reservation, destruction of this object does not release the resource
|
||||||
|
void Commit() {
|
||||||
|
resource_limit = nullptr;
|
||||||
|
}
|
||||||
|
|
||||||
|
[[nodiscard]] bool Succeeded() const {
|
||||||
|
return success;
|
||||||
|
}
|
||||||
|
|
||||||
|
private:
|
||||||
|
std::shared_ptr<KResourceLimit> resource_limit;
|
||||||
|
s64 value;
|
||||||
|
LimitableResource resource;
|
||||||
|
bool success;
|
||||||
|
};
|
||||||
|
|
||||||
|
} // namespace Kernel
|
|
@ -6,7 +6,7 @@
|
||||||
#include "common/assert.h"
|
#include "common/assert.h"
|
||||||
#include "common/scope_exit.h"
|
#include "common/scope_exit.h"
|
||||||
#include "core/core.h"
|
#include "core/core.h"
|
||||||
#include "core/hle/kernel/k_resource_limit.h"
|
#include "core/hle/kernel/k_scoped_resource_reservation.h"
|
||||||
#include "core/hle/kernel/kernel.h"
|
#include "core/hle/kernel/kernel.h"
|
||||||
#include "core/hle/kernel/memory/address_space_info.h"
|
#include "core/hle/kernel/memory/address_space_info.h"
|
||||||
#include "core/hle/kernel/memory/memory_block.h"
|
#include "core/hle/kernel/memory/memory_block.h"
|
||||||
|
@ -409,27 +409,25 @@ ResultCode PageTable::MapPhysicalMemory(VAddr addr, std::size_t size) {
|
||||||
return RESULT_SUCCESS;
|
return RESULT_SUCCESS;
|
||||||
}
|
}
|
||||||
|
|
||||||
auto process{system.Kernel().CurrentProcess()};
|
|
||||||
const std::size_t remaining_size{size - mapped_size};
|
const std::size_t remaining_size{size - mapped_size};
|
||||||
const std::size_t remaining_pages{remaining_size / PageSize};
|
const std::size_t remaining_pages{remaining_size / PageSize};
|
||||||
|
|
||||||
if (process->GetResourceLimit() &&
|
// Reserve the memory from the process resource limit.
|
||||||
!process->GetResourceLimit()->Reserve(LimitableResource::PhysicalMemory, remaining_size)) {
|
KScopedResourceReservation memory_reservation(
|
||||||
|
system.Kernel().CurrentProcess()->GetResourceLimit(), LimitableResource::PhysicalMemory,
|
||||||
|
remaining_size);
|
||||||
|
if (!memory_reservation.Succeeded()) {
|
||||||
|
LOG_ERROR(Kernel, "Could not reserve remaining {:X} bytes", remaining_size);
|
||||||
return ResultResourceLimitedExceeded;
|
return ResultResourceLimitedExceeded;
|
||||||
}
|
}
|
||||||
|
|
||||||
PageLinkedList page_linked_list;
|
PageLinkedList page_linked_list;
|
||||||
{
|
|
||||||
auto block_guard = detail::ScopeExit([&] {
|
|
||||||
system.Kernel().MemoryManager().Free(page_linked_list, remaining_pages, memory_pool);
|
|
||||||
process->GetResourceLimit()->Release(LimitableResource::PhysicalMemory, remaining_size);
|
|
||||||
});
|
|
||||||
|
|
||||||
CASCADE_CODE(system.Kernel().MemoryManager().Allocate(page_linked_list, remaining_pages,
|
CASCADE_CODE(
|
||||||
memory_pool));
|
system.Kernel().MemoryManager().Allocate(page_linked_list, remaining_pages, memory_pool));
|
||||||
|
|
||||||
block_guard.Cancel();
|
// We succeeded, so commit the memory reservation.
|
||||||
}
|
memory_reservation.Commit();
|
||||||
|
|
||||||
MapPhysicalMemory(page_linked_list, addr, end_addr);
|
MapPhysicalMemory(page_linked_list, addr, end_addr);
|
||||||
|
|
||||||
|
@ -781,9 +779,13 @@ ResultVal<VAddr> PageTable::SetHeapSize(std::size_t size) {
|
||||||
|
|
||||||
const u64 delta{size - previous_heap_size};
|
const u64 delta{size - previous_heap_size};
|
||||||
|
|
||||||
auto process{system.Kernel().CurrentProcess()};
|
// Reserve memory for the heap extension.
|
||||||
if (process->GetResourceLimit() && delta != 0 &&
|
KScopedResourceReservation memory_reservation(
|
||||||
!process->GetResourceLimit()->Reserve(LimitableResource::PhysicalMemory, delta)) {
|
system.Kernel().CurrentProcess()->GetResourceLimit(), LimitableResource::PhysicalMemory,
|
||||||
|
delta);
|
||||||
|
|
||||||
|
if (!memory_reservation.Succeeded()) {
|
||||||
|
LOG_ERROR(Kernel, "Could not reserve heap extension of size {:X} bytes", delta);
|
||||||
return ResultResourceLimitedExceeded;
|
return ResultResourceLimitedExceeded;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -800,6 +802,9 @@ ResultVal<VAddr> PageTable::SetHeapSize(std::size_t size) {
|
||||||
CASCADE_CODE(
|
CASCADE_CODE(
|
||||||
Operate(current_heap_addr, num_pages, page_linked_list, OperationType::MapGroup));
|
Operate(current_heap_addr, num_pages, page_linked_list, OperationType::MapGroup));
|
||||||
|
|
||||||
|
// Succeeded in allocation, commit the resource reservation
|
||||||
|
memory_reservation.Commit();
|
||||||
|
|
||||||
block_manager->Update(current_heap_addr, num_pages, MemoryState::Normal,
|
block_manager->Update(current_heap_addr, num_pages, MemoryState::Normal,
|
||||||
MemoryPermission::ReadAndWrite);
|
MemoryPermission::ReadAndWrite);
|
||||||
|
|
||||||
|
|
|
@ -16,6 +16,7 @@
|
||||||
#include "core/hle/kernel/code_set.h"
|
#include "core/hle/kernel/code_set.h"
|
||||||
#include "core/hle/kernel/k_resource_limit.h"
|
#include "core/hle/kernel/k_resource_limit.h"
|
||||||
#include "core/hle/kernel/k_scheduler.h"
|
#include "core/hle/kernel/k_scheduler.h"
|
||||||
|
#include "core/hle/kernel/k_scoped_resource_reservation.h"
|
||||||
#include "core/hle/kernel/k_thread.h"
|
#include "core/hle/kernel/k_thread.h"
|
||||||
#include "core/hle/kernel/kernel.h"
|
#include "core/hle/kernel/kernel.h"
|
||||||
#include "core/hle/kernel/memory/memory_block_manager.h"
|
#include "core/hle/kernel/memory/memory_block_manager.h"
|
||||||
|
@ -116,6 +117,9 @@ std::shared_ptr<Process> Process::Create(Core::System& system, std::string name,
|
||||||
|
|
||||||
std::shared_ptr<Process> process = std::make_shared<Process>(system);
|
std::shared_ptr<Process> process = std::make_shared<Process>(system);
|
||||||
process->name = std::move(name);
|
process->name = std::move(name);
|
||||||
|
|
||||||
|
// 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->resource_limit = std::make_shared<KResourceLimit>(kernel, system);
|
||||||
process->status = ProcessStatus::Created;
|
process->status = ProcessStatus::Created;
|
||||||
process->program_id = 0;
|
process->program_id = 0;
|
||||||
|
@ -154,6 +158,9 @@ void Process::DecrementThreadCount() {
|
||||||
}
|
}
|
||||||
|
|
||||||
u64 Process::GetTotalPhysicalMemoryAvailable() const {
|
u64 Process::GetTotalPhysicalMemoryAvailable() const {
|
||||||
|
// 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) +
|
const u64 capacity{resource_limit->GetFreeValue(LimitableResource::PhysicalMemory) +
|
||||||
page_table->GetTotalHeapSize() + GetSystemResourceSize() + image_size +
|
page_table->GetTotalHeapSize() + GetSystemResourceSize() + image_size +
|
||||||
main_thread_stack_size};
|
main_thread_stack_size};
|
||||||
|
@ -263,6 +270,17 @@ ResultCode Process::LoadFromMetadata(const FileSys::ProgramMetadata& metadata,
|
||||||
system_resource_size = metadata.GetSystemResourceSize();
|
system_resource_size = metadata.GetSystemResourceSize();
|
||||||
image_size = code_size;
|
image_size = code_size;
|
||||||
|
|
||||||
|
// Set initial resource limits
|
||||||
|
resource_limit->SetLimitValue(
|
||||||
|
LimitableResource::PhysicalMemory,
|
||||||
|
kernel.MemoryManager().GetSize(Memory::MemoryManager::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 ERR_RESOURCE_LIMIT_EXCEEDED;
|
||||||
|
}
|
||||||
// Initialize proces address space
|
// Initialize proces address space
|
||||||
if (const ResultCode result{
|
if (const ResultCode result{
|
||||||
page_table->InitializeForProcess(metadata.GetAddressSpaceType(), false, 0x8000000,
|
page_table->InitializeForProcess(metadata.GetAddressSpaceType(), false, 0x8000000,
|
||||||
|
@ -304,24 +322,22 @@ ResultCode Process::LoadFromMetadata(const FileSys::ProgramMetadata& metadata,
|
||||||
UNREACHABLE();
|
UNREACHABLE();
|
||||||
}
|
}
|
||||||
|
|
||||||
// Set initial resource limits
|
|
||||||
resource_limit->SetLimitValue(
|
|
||||||
LimitableResource::PhysicalMemory,
|
|
||||||
kernel.MemoryManager().GetSize(Memory::MemoryManager::Pool::Application));
|
|
||||||
resource_limit->SetLimitValue(LimitableResource::Threads, 608);
|
resource_limit->SetLimitValue(LimitableResource::Threads, 608);
|
||||||
resource_limit->SetLimitValue(LimitableResource::Events, 700);
|
resource_limit->SetLimitValue(LimitableResource::Events, 700);
|
||||||
resource_limit->SetLimitValue(LimitableResource::TransferMemory, 128);
|
resource_limit->SetLimitValue(LimitableResource::TransferMemory, 128);
|
||||||
resource_limit->SetLimitValue(LimitableResource::Sessions, 894);
|
resource_limit->SetLimitValue(LimitableResource::Sessions, 894);
|
||||||
ASSERT(resource_limit->Reserve(LimitableResource::PhysicalMemory, code_size));
|
|
||||||
|
|
||||||
// Create TLS region
|
// Create TLS region
|
||||||
tls_region_address = CreateTLSRegion();
|
tls_region_address = CreateTLSRegion();
|
||||||
|
memory_reservation.Commit();
|
||||||
|
|
||||||
return handle_table.SetSize(capabilities.GetHandleTableSize());
|
return handle_table.SetSize(capabilities.GetHandleTableSize());
|
||||||
}
|
}
|
||||||
|
|
||||||
void Process::Run(s32 main_thread_priority, u64 stack_size) {
|
void Process::Run(s32 main_thread_priority, u64 stack_size) {
|
||||||
AllocateMainThreadStack(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};
|
const std::size_t heap_capacity{memory_usage_capacity - main_thread_stack_size - image_size};
|
||||||
ASSERT(!page_table->SetHeapCapacity(heap_capacity).IsError());
|
ASSERT(!page_table->SetHeapCapacity(heap_capacity).IsError());
|
||||||
|
@ -329,8 +345,6 @@ void Process::Run(s32 main_thread_priority, u64 stack_size) {
|
||||||
ChangeStatus(ProcessStatus::Running);
|
ChangeStatus(ProcessStatus::Running);
|
||||||
|
|
||||||
SetupMainThread(system, *this, main_thread_priority, main_thread_stack_top);
|
SetupMainThread(system, *this, main_thread_priority, main_thread_stack_top);
|
||||||
resource_limit->Reserve(LimitableResource::Threads, 1);
|
|
||||||
resource_limit->Reserve(LimitableResource::PhysicalMemory, main_thread_stack_size);
|
|
||||||
}
|
}
|
||||||
|
|
||||||
void Process::PrepareForTermination() {
|
void Process::PrepareForTermination() {
|
||||||
|
@ -357,6 +371,11 @@ void Process::PrepareForTermination() {
|
||||||
FreeTLSRegion(tls_region_address);
|
FreeTLSRegion(tls_region_address);
|
||||||
tls_region_address = 0;
|
tls_region_address = 0;
|
||||||
|
|
||||||
|
if (resource_limit) {
|
||||||
|
resource_limit->Release(LimitableResource::PhysicalMemory,
|
||||||
|
main_thread_stack_size + image_size);
|
||||||
|
}
|
||||||
|
|
||||||
ChangeStatus(ProcessStatus::Exited);
|
ChangeStatus(ProcessStatus::Exited);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
@ -4,6 +4,7 @@
|
||||||
|
|
||||||
#include "common/assert.h"
|
#include "common/assert.h"
|
||||||
#include "core/core.h"
|
#include "core/core.h"
|
||||||
|
#include "core/hle/kernel/k_scoped_resource_reservation.h"
|
||||||
#include "core/hle/kernel/kernel.h"
|
#include "core/hle/kernel/kernel.h"
|
||||||
#include "core/hle/kernel/memory/page_table.h"
|
#include "core/hle/kernel/memory/page_table.h"
|
||||||
#include "core/hle/kernel/shared_memory.h"
|
#include "core/hle/kernel/shared_memory.h"
|
||||||
|
@ -21,6 +22,11 @@ std::shared_ptr<SharedMemory> SharedMemory::Create(
|
||||||
Memory::MemoryPermission user_permission, PAddr physical_address, std::size_t size,
|
Memory::MemoryPermission user_permission, PAddr physical_address, std::size_t size,
|
||||||
std::string name) {
|
std::string name) {
|
||||||
|
|
||||||
|
const auto resource_limit = kernel.GetSystemResourceLimit();
|
||||||
|
KScopedResourceReservation memory_reservation(resource_limit, LimitableResource::PhysicalMemory,
|
||||||
|
size);
|
||||||
|
ASSERT(memory_reservation.Succeeded());
|
||||||
|
|
||||||
std::shared_ptr<SharedMemory> shared_memory{
|
std::shared_ptr<SharedMemory> shared_memory{
|
||||||
std::make_shared<SharedMemory>(kernel, device_memory)};
|
std::make_shared<SharedMemory>(kernel, device_memory)};
|
||||||
|
|
||||||
|
@ -32,6 +38,7 @@ std::shared_ptr<SharedMemory> SharedMemory::Create(
|
||||||
shared_memory->size = size;
|
shared_memory->size = size;
|
||||||
shared_memory->name = name;
|
shared_memory->name = name;
|
||||||
|
|
||||||
|
memory_reservation.Commit();
|
||||||
return shared_memory;
|
return shared_memory;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
@ -30,6 +30,7 @@
|
||||||
#include "core/hle/kernel/k_readable_event.h"
|
#include "core/hle/kernel/k_readable_event.h"
|
||||||
#include "core/hle/kernel/k_resource_limit.h"
|
#include "core/hle/kernel/k_resource_limit.h"
|
||||||
#include "core/hle/kernel/k_scheduler.h"
|
#include "core/hle/kernel/k_scheduler.h"
|
||||||
|
#include "core/hle/kernel/k_scoped_resource_reservation.h"
|
||||||
#include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
|
#include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
|
||||||
#include "core/hle/kernel/k_synchronization_object.h"
|
#include "core/hle/kernel/k_synchronization_object.h"
|
||||||
#include "core/hle/kernel/k_thread.h"
|
#include "core/hle/kernel/k_thread.h"
|
||||||
|
@ -1516,8 +1517,13 @@ static ResultCode CreateThread(Core::System& system, Handle* out_handle, VAddr e
|
||||||
return ResultInvalidPriority;
|
return ResultInvalidPriority;
|
||||||
}
|
}
|
||||||
|
|
||||||
ASSERT(process.GetResourceLimit()->Reserve(
|
KScopedResourceReservation thread_reservation(
|
||||||
LimitableResource::Threads, 1, system.CoreTiming().GetGlobalTimeNs().count() + 100000000));
|
kernel.CurrentProcess(), LimitableResource::Threads, 1,
|
||||||
|
system.CoreTiming().GetGlobalTimeNs().count() + 100000000);
|
||||||
|
if (!thread_reservation.Succeeded()) {
|
||||||
|
LOG_ERROR(Kernel_SVC, "Could not reserve a new thread");
|
||||||
|
return ERR_RESOURCE_LIMIT_EXCEEDED;
|
||||||
|
}
|
||||||
|
|
||||||
std::shared_ptr<KThread> thread;
|
std::shared_ptr<KThread> thread;
|
||||||
{
|
{
|
||||||
|
@ -1537,6 +1543,7 @@ static ResultCode CreateThread(Core::System& system, Handle* out_handle, VAddr e
|
||||||
// Set the thread name for debugging purposes.
|
// Set the thread name for debugging purposes.
|
||||||
thread->SetName(
|
thread->SetName(
|
||||||
fmt::format("thread[entry_point={:X}, handle={:X}]", entry_point, *new_thread_handle));
|
fmt::format("thread[entry_point={:X}, handle={:X}]", entry_point, *new_thread_handle));
|
||||||
|
thread_reservation.Commit();
|
||||||
|
|
||||||
return RESULT_SUCCESS;
|
return RESULT_SUCCESS;
|
||||||
}
|
}
|
||||||
|
@ -1884,6 +1891,13 @@ static ResultCode CreateTransferMemory(Core::System& system, Handle* handle, VAd
|
||||||
}
|
}
|
||||||
|
|
||||||
auto& kernel = system.Kernel();
|
auto& kernel = system.Kernel();
|
||||||
|
// Reserve a new transfer memory from the process resource limit.
|
||||||
|
KScopedResourceReservation trmem_reservation(kernel.CurrentProcess(),
|
||||||
|
LimitableResource::TransferMemory);
|
||||||
|
if (!trmem_reservation.Succeeded()) {
|
||||||
|
LOG_ERROR(Kernel_SVC, "Could not reserve a new transfer memory");
|
||||||
|
return ERR_RESOURCE_LIMIT_EXCEEDED;
|
||||||
|
}
|
||||||
auto transfer_mem_handle = TransferMemory::Create(kernel, system.Memory(), addr, size, perms);
|
auto transfer_mem_handle = TransferMemory::Create(kernel, system.Memory(), addr, size, perms);
|
||||||
|
|
||||||
if (const auto reserve_result{transfer_mem_handle->Reserve()}; reserve_result.IsError()) {
|
if (const auto reserve_result{transfer_mem_handle->Reserve()}; reserve_result.IsError()) {
|
||||||
|
@ -1895,6 +1909,7 @@ static ResultCode CreateTransferMemory(Core::System& system, Handle* handle, VAd
|
||||||
if (result.Failed()) {
|
if (result.Failed()) {
|
||||||
return result.Code();
|
return result.Code();
|
||||||
}
|
}
|
||||||
|
trmem_reservation.Commit();
|
||||||
|
|
||||||
*handle = *result;
|
*handle = *result;
|
||||||
return RESULT_SUCCESS;
|
return RESULT_SUCCESS;
|
||||||
|
@ -2002,8 +2017,17 @@ static ResultCode SetThreadCoreMask32(Core::System& system, Handle thread_handle
|
||||||
static ResultCode SignalEvent(Core::System& system, Handle event_handle) {
|
static ResultCode SignalEvent(Core::System& system, Handle event_handle) {
|
||||||
LOG_DEBUG(Kernel_SVC, "called, event_handle=0x{:08X}", event_handle);
|
LOG_DEBUG(Kernel_SVC, "called, event_handle=0x{:08X}", event_handle);
|
||||||
|
|
||||||
|
auto& kernel = system.Kernel();
|
||||||
// Get the current handle table.
|
// Get the current handle table.
|
||||||
const HandleTable& handle_table = system.Kernel().CurrentProcess()->GetHandleTable();
|
const HandleTable& handle_table = kernel.CurrentProcess()->GetHandleTable();
|
||||||
|
|
||||||
|
// Reserve a new event from the process resource limit.
|
||||||
|
KScopedResourceReservation event_reservation(kernel.CurrentProcess(),
|
||||||
|
LimitableResource::Events);
|
||||||
|
if (!event_reservation.Succeeded()) {
|
||||||
|
LOG_ERROR(Kernel, "Could not reserve a new event");
|
||||||
|
return ERR_RESOURCE_LIMIT_EXCEEDED;
|
||||||
|
}
|
||||||
|
|
||||||
// Get the writable event.
|
// Get the writable event.
|
||||||
auto writable_event = handle_table.Get<KWritableEvent>(event_handle);
|
auto writable_event = handle_table.Get<KWritableEvent>(event_handle);
|
||||||
|
@ -2012,6 +2036,9 @@ static ResultCode SignalEvent(Core::System& system, Handle event_handle) {
|
||||||
return ResultInvalidHandle;
|
return ResultInvalidHandle;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
// Commit the successfuly reservation.
|
||||||
|
event_reservation.Commit();
|
||||||
|
|
||||||
return writable_event->Signal();
|
return writable_event->Signal();
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
Reference in New Issue