mirror of
https://github.com/Atmosphere-NX/Atmosphere
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352 lines
18 KiB
C++
352 lines
18 KiB
C++
/*
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* Copyright (c) 2018-2019 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "pm_resource_manager.hpp"
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namespace ams::pm::resource {
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namespace {
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constexpr LimitableResource LimitableResources[] = {
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LimitableResource_Memory,
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LimitableResource_Threads,
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LimitableResource_Events,
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LimitableResource_TransferMemories,
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LimitableResource_Sessions,
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};
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constexpr size_t LimitableResource_Count = util::size(LimitableResources);
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constexpr size_t Megabyte = 0x100000;
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/* Definitions for limit differences over time. */
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constexpr size_t ExtraSystemThreadCount400 = 100;
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constexpr size_t ExtraSystemMemorySize400 = 10 * Megabyte;
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constexpr size_t ExtraSystemMemorySize500 = 12 * Megabyte;
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constexpr size_t ExtraSystemEventCount600 = 100;
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constexpr size_t ExtraSystemSessionCount600 = 100;
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constexpr size_t ReservedMemorySize600 = 5 * Megabyte;
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/* Atmosphere always allocates 24 extra megabytes for system usage. */
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constexpr size_t ExtraSystemMemorySizeAtmosphere = 24 * Megabyte;
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/* Globals. */
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os::Mutex g_resource_limit_lock;
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Handle g_resource_limit_handles[ResourceLimitGroup_Count];
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spl::MemoryArrangement g_memory_arrangement = spl::MemoryArrangement_Standard;
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u64 g_system_memory_boost_size = 0;
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u64 g_extra_application_threads_available = 0;
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u64 g_resource_limits[ResourceLimitGroup_Count][LimitableResource_Count] = {
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[ResourceLimitGroup_System] = {
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[LimitableResource_Memory] = 0, /* Initialized by more complicated logic later. */
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[LimitableResource_Threads] = 508,
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[LimitableResource_Events] = 600,
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[LimitableResource_TransferMemories] = 128,
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[LimitableResource_Sessions] = 794,
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},
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[ResourceLimitGroup_Application] = {
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[LimitableResource_Memory] = 0, /* Initialized by more complicated logic later. */
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[LimitableResource_Threads] = 96,
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[LimitableResource_Events] = 0,
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[LimitableResource_TransferMemories] = 32,
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[LimitableResource_Sessions] = 1,
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},
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[ResourceLimitGroup_Applet] = {
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[LimitableResource_Memory] = 0, /* Initialized by more complicated logic later. */
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[LimitableResource_Threads] = 96,
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[LimitableResource_Events] = 0,
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[LimitableResource_TransferMemories] = 32,
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[LimitableResource_Sessions] = 5,
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},
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};
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u64 g_memory_resource_limits[spl::MemoryArrangement_Count][ResourceLimitGroup_Count] = {
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[spl::MemoryArrangement_Standard] = {
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[ResourceLimitGroup_System] = 269 * Megabyte,
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[ResourceLimitGroup_Application] = 3285 * Megabyte,
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[ResourceLimitGroup_Applet] = 535 * Megabyte,
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},
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[spl::MemoryArrangement_StandardForAppletDev] = {
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[ResourceLimitGroup_System] = 481 * Megabyte,
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[ResourceLimitGroup_Application] = 2048 * Megabyte,
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[ResourceLimitGroup_Applet] = 1560 * Megabyte,
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},
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[spl::MemoryArrangement_StandardForSystemDev] = {
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[ResourceLimitGroup_System] = 328 * Megabyte,
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[ResourceLimitGroup_Application] = 3285 * Megabyte,
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[ResourceLimitGroup_Applet] = 476 * Megabyte,
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},
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[spl::MemoryArrangement_Expanded] = {
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[ResourceLimitGroup_System] = 653 * Megabyte,
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[ResourceLimitGroup_Application] = 4916 * Megabyte,
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[ResourceLimitGroup_Applet] = 568 * Megabyte,
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},
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[spl::MemoryArrangement_ExpandedForAppletDev] = {
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[ResourceLimitGroup_System] = 653 * Megabyte,
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[ResourceLimitGroup_Application] = 3285 * Megabyte,
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[ResourceLimitGroup_Applet] = 2199 * Megabyte,
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},
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};
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/* Helpers. */
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Result SetMemoryResourceLimitLimitValue(ResourceLimitGroup group, u64 new_memory_limit) {
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const u64 old_memory_limit = g_resource_limits[group][LimitableResource_Memory];
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g_resource_limits[group][LimitableResource_Memory] = new_memory_limit;
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{
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/* If we fail, restore the old memory limit. */
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auto limit_guard = SCOPE_GUARD { g_resource_limits[group][LimitableResource_Memory] = old_memory_limit; };
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R_TRY(svcSetResourceLimitLimitValue(GetResourceLimitHandle(group), LimitableResource_Memory, g_resource_limits[group][LimitableResource_Memory]));
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limit_guard.Cancel();
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}
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return ResultSuccess();
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}
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Result SetResourceLimitLimitValues(ResourceLimitGroup group, u64 new_memory_limit) {
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/* First, set memory limit. */
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R_TRY(SetMemoryResourceLimitLimitValue(group, new_memory_limit));
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/* Set other limit values. */
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for (size_t i = 0; i < LimitableResource_Count; i++) {
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const auto resource = LimitableResources[i];
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if (resource == LimitableResource_Memory) {
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continue;
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}
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R_TRY(svcSetResourceLimitLimitValue(GetResourceLimitHandle(group), resource, g_resource_limits[group][resource]));
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}
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return ResultSuccess();
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}
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inline ResourceLimitGroup GetResourceLimitGroup(const ldr::ProgramInfo *info) {
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switch (info->flags & ldr::ProgramInfoFlag_ApplicationTypeMask) {
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case ldr::ProgramInfoFlag_Application:
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return ResourceLimitGroup_Application;
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case ldr::ProgramInfoFlag_Applet:
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return ResourceLimitGroup_Applet;
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default:
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return ResourceLimitGroup_System;
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}
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}
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void WaitResourceAvailable(ResourceLimitGroup group) {
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const Handle reslimit_hnd = GetResourceLimitHandle(group);
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for (size_t i = 0; i < LimitableResource_Count; i++) {
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const auto resource = LimitableResources[i];
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u64 value = 0;
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while (true) {
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R_ASSERT(svcGetResourceLimitCurrentValue(&value, reslimit_hnd, resource));
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if (value == 0) {
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break;
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}
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svcSleepThread(1'000'000ul);
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}
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}
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}
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void WaitApplicationMemoryAvailable() {
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u64 value = 0;
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while (true) {
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R_ASSERT(svcGetSystemInfo(&value, SystemInfoType_UsedPhysicalMemorySize, INVALID_HANDLE, PhysicalMemoryInfo_Application));
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if (value == 0) {
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break;
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}
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svcSleepThread(1'000'000ul);
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}
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}
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}
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/* Resource API. */
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Result InitializeResourceManager() {
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/* Create resource limit handles. */
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for (size_t i = 0; i < ResourceLimitGroup_Count; i++) {
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if (i == ResourceLimitGroup_System) {
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u64 value = 0;
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R_ASSERT(svcGetInfo(&value, InfoType_ResourceLimit, INVALID_HANDLE, 0));
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g_resource_limit_handles[i] = static_cast<Handle>(value);
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} else {
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R_ASSERT(svcCreateResourceLimit(&g_resource_limit_handles[i]));
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}
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}
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/* Adjust resource limits based on hos firmware version. */
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const auto hos_version = hos::GetVersion();
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if (hos_version >= hos::Version_400) {
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/* 4.0.0 increased the system thread limit. */
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g_resource_limits[ResourceLimitGroup_System][LimitableResource_Threads] += ExtraSystemThreadCount400;
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/* 4.0.0 also took memory away from applet and gave it to system, for the Standard and StandardForSystemDev profiles. */
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g_memory_resource_limits[spl::MemoryArrangement_Standard][ResourceLimitGroup_System] += ExtraSystemMemorySize400;
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g_memory_resource_limits[spl::MemoryArrangement_Standard][ResourceLimitGroup_Applet] -= ExtraSystemMemorySize400;
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g_memory_resource_limits[spl::MemoryArrangement_StandardForSystemDev][ResourceLimitGroup_System] += ExtraSystemMemorySize400;
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g_memory_resource_limits[spl::MemoryArrangement_StandardForSystemDev][ResourceLimitGroup_Applet] -= ExtraSystemMemorySize400;
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}
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if (hos_version >= hos::Version_500) {
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/* 5.0.0 took more memory away from applet and gave it to system, for the Standard and StandardForSystemDev profiles. */
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g_memory_resource_limits[spl::MemoryArrangement_Standard][ResourceLimitGroup_System] += ExtraSystemMemorySize500;
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g_memory_resource_limits[spl::MemoryArrangement_Standard][ResourceLimitGroup_Applet] -= ExtraSystemMemorySize500;
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g_memory_resource_limits[spl::MemoryArrangement_StandardForSystemDev][ResourceLimitGroup_System] += ExtraSystemMemorySize500;
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g_memory_resource_limits[spl::MemoryArrangement_StandardForSystemDev][ResourceLimitGroup_Applet] -= ExtraSystemMemorySize500;
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}
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if (hos_version >= hos::Version_600) {
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/* 6.0.0 increased the system event and session limits. */
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g_resource_limits[ResourceLimitGroup_System][LimitableResource_Events] += ExtraSystemEventCount600;
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g_resource_limits[ResourceLimitGroup_System][LimitableResource_Sessions] += ExtraSystemSessionCount600;
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}
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/* 7.0.0+: Calculate the number of extra application threads available. */
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if (hos::GetVersion() >= hos::Version_700) {
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/* See how many threads we have available. */
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u64 total_threads_available = 0;
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R_ASSERT(svcGetResourceLimitLimitValue(&total_threads_available, GetResourceLimitHandle(ResourceLimitGroup_System), LimitableResource_Threads));
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/* See how many threads we're expecting. */
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const size_t total_threads_allocated = g_resource_limits[ResourceLimitGroup_System][LimitableResource_Threads] -
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g_resource_limits[ResourceLimitGroup_Application][LimitableResource_Threads] -
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g_resource_limits[ResourceLimitGroup_Applet][LimitableResource_Threads];
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/* Ensure we don't over-commit threads. */
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AMS_ASSERT(total_threads_allocated <= total_threads_available);
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/* Set number of extra threads. */
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g_extra_application_threads_available = total_threads_available - total_threads_allocated;
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}
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/* Choose and initialize memory arrangement. */
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if (hos_version >= hos::Version_600) {
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/* 6.0.0 retrieves memory limit information from the kernel, rather than using a hardcoded profile. */
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g_memory_arrangement = spl::MemoryArrangement_Dynamic;
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/* Get total memory available. */
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u64 total_memory = 0;
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R_ASSERT(svcGetResourceLimitLimitValue(&total_memory, GetResourceLimitHandle(ResourceLimitGroup_System), LimitableResource_Memory));
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/* Get and save application + applet memory. */
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R_ASSERT(svcGetSystemInfo(&g_memory_resource_limits[spl::MemoryArrangement_Dynamic][ResourceLimitGroup_Application], SystemInfoType_TotalPhysicalMemorySize, INVALID_HANDLE, PhysicalMemoryInfo_Application));
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R_ASSERT(svcGetSystemInfo(&g_memory_resource_limits[spl::MemoryArrangement_Dynamic][ResourceLimitGroup_Applet], SystemInfoType_TotalPhysicalMemorySize, INVALID_HANDLE, PhysicalMemoryInfo_Applet));
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const u64 application_size = g_memory_resource_limits[spl::MemoryArrangement_Dynamic][ResourceLimitGroup_Application];
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const u64 applet_size = g_memory_resource_limits[spl::MemoryArrangement_Dynamic][ResourceLimitGroup_Applet];
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const u64 reserved_non_system_size = (application_size + applet_size + ReservedMemorySize600);
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/* Ensure there's enough memory for the system region. */
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AMS_ASSERT(reserved_non_system_size < total_memory);
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g_memory_resource_limits[spl::MemoryArrangement_Dynamic][ResourceLimitGroup_System] = total_memory - reserved_non_system_size;
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} else {
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g_memory_arrangement = spl::GetMemoryArrangement();
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}
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/* Adjust memory limits for atmosphere. */
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/* We take memory away from applet normally, but away from application on < 3.0.0 to avoid a rare hang on boot. */
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for (size_t i = 0; i < spl::MemoryArrangement_Count; i++) {
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g_memory_resource_limits[i][ResourceLimitGroup_System] += ExtraSystemMemorySizeAtmosphere;
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if (hos_version >= hos::Version_300) {
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g_memory_resource_limits[i][ResourceLimitGroup_Applet] -= ExtraSystemMemorySizeAtmosphere;
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} else {
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g_memory_resource_limits[i][ResourceLimitGroup_Application] -= ExtraSystemMemorySizeAtmosphere;
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}
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}
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/* Actually set resource limits. */
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{
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std::scoped_lock lk(g_resource_limit_lock);
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for (size_t group = 0; group < ResourceLimitGroup_Count; group++) {
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R_ASSERT(SetResourceLimitLimitValues(static_cast<ResourceLimitGroup>(group), g_memory_resource_limits[g_memory_arrangement][group]));
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}
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}
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return ResultSuccess();
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}
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Result BoostSystemMemoryResourceLimit(u64 boost_size) {
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/* Don't allow all application memory to be taken away. */
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R_UNLESS(boost_size <= g_memory_resource_limits[g_memory_arrangement][ResourceLimitGroup_Application], pm::ResultInvalidSize());
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const u64 new_app_size = g_memory_resource_limits[g_memory_arrangement][ResourceLimitGroup_Application] - boost_size;
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{
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std::scoped_lock lk(g_resource_limit_lock);
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if (hos::GetVersion() >= hos::Version_500) {
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/* Starting in 5.0.0, PM does not allow for only one of the sets to fail. */
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if (boost_size < g_system_memory_boost_size) {
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R_TRY(svcSetUnsafeLimit(boost_size));
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R_ASSERT(SetMemoryResourceLimitLimitValue(ResourceLimitGroup_Application, new_app_size));
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} else {
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R_TRY(SetMemoryResourceLimitLimitValue(ResourceLimitGroup_Application, new_app_size));
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R_ASSERT(svcSetUnsafeLimit(boost_size));
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}
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} else {
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const u64 new_sys_size = g_memory_resource_limits[g_memory_arrangement][ResourceLimitGroup_System] + boost_size;
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if (boost_size < g_system_memory_boost_size) {
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R_TRY(SetMemoryResourceLimitLimitValue(ResourceLimitGroup_System, new_sys_size));
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R_TRY(SetMemoryResourceLimitLimitValue(ResourceLimitGroup_Application, new_app_size));
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} else {
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R_TRY(SetMemoryResourceLimitLimitValue(ResourceLimitGroup_Application, new_app_size));
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R_TRY(SetMemoryResourceLimitLimitValue(ResourceLimitGroup_System, new_sys_size));
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}
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}
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g_system_memory_boost_size = boost_size;
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}
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return ResultSuccess();
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}
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Result BoostApplicationThreadResourceLimit() {
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std::scoped_lock lk(g_resource_limit_lock);
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/* Set new limit. */
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const u64 new_thread_count = g_resource_limits[ResourceLimitGroup_Application][LimitableResource_Threads] + g_extra_application_threads_available;
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R_TRY(svcSetResourceLimitLimitValue(GetResourceLimitHandle(ResourceLimitGroup_Application), LimitableResource_Threads, new_thread_count));
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/* Record that we did so. */
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g_resource_limits[ResourceLimitGroup_Application][LimitableResource_Threads] = new_thread_count;
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g_extra_application_threads_available = 0;
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return ResultSuccess();
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}
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Handle GetResourceLimitHandle(ResourceLimitGroup group) {
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return g_resource_limit_handles[group];
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}
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Handle GetResourceLimitHandle(const ldr::ProgramInfo *info) {
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return GetResourceLimitHandle(GetResourceLimitGroup(info));
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}
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void WaitResourceAvailable(const ldr::ProgramInfo *info) {
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if (GetResourceLimitGroup(info) == ResourceLimitGroup_Application) {
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WaitResourceAvailable(ResourceLimitGroup_Application);
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if (hos::GetVersion() >= hos::Version_500) {
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WaitApplicationMemoryAvailable();
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}
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}
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}
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Result GetResourceLimitValues(u64 *out_cur, u64 *out_lim, ResourceLimitGroup group, LimitableResource resource) {
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/* Do not allow out of bounds access. */
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AMS_ASSERT(group < ResourceLimitGroup_Count);
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AMS_ASSERT(resource < LimitableResource_Count);
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const Handle reslimit_hnd = GetResourceLimitHandle(group);
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R_TRY(svcGetResourceLimitCurrentValue(out_cur, reslimit_hnd, resource));
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R_TRY(svcGetResourceLimitLimitValue(out_lim, reslimit_hnd, resource));
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return ResultSuccess();
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}
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}
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