2014-12-17 05:38:14 +00:00
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// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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2014-11-19 08:49:13 +00:00
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// Refer to the license.txt file included.
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2014-05-10 02:11:18 +00:00
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2018-08-28 16:30:33 +00:00
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#include <array>
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#include <atomic>
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#include <memory>
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#include <mutex>
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#include <utility>
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#include "common/assert.h"
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#include "common/logging/log.h"
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#include "core/core.h"
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#include "core/core_timing.h"
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2018-09-02 15:58:58 +00:00
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#include "core/hle/kernel/client_port.h"
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2017-05-29 23:45:42 +00:00
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#include "core/hle/kernel/handle_table.h"
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2016-09-21 06:52:38 +00:00
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#include "core/hle/kernel/kernel.h"
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2015-05-04 03:01:16 +00:00
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#include "core/hle/kernel/process.h"
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2015-08-06 00:26:52 +00:00
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#include "core/hle/kernel/resource_limit.h"
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2014-05-10 02:11:18 +00:00
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#include "core/hle/kernel/thread.h"
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2014-12-04 19:45:47 +00:00
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#include "core/hle/kernel/timer.h"
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2018-08-28 16:30:33 +00:00
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#include "core/hle/lock.h"
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#include "core/hle/result.h"
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2014-05-10 02:11:18 +00:00
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2014-05-20 22:13:25 +00:00
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namespace Kernel {
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2014-05-10 02:11:18 +00:00
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2018-08-28 16:30:33 +00:00
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/**
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* Callback that will wake up the thread it was scheduled for
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* @param thread_handle The handle of the thread that's been awoken
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* @param cycles_late The number of CPU cycles that have passed since the desired wakeup time
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*/
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static void ThreadWakeupCallback(u64 thread_handle, [[maybe_unused]] int cycles_late) {
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const auto proper_handle = static_cast<Handle>(thread_handle);
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auto& system = Core::System::GetInstance();
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// Lock the global kernel mutex when we enter the kernel HLE.
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std::lock_guard<std::recursive_mutex> lock(HLE::g_hle_lock);
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SharedPtr<Thread> thread =
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system.Kernel().RetrieveThreadFromWakeupCallbackHandleTable(proper_handle);
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if (thread == nullptr) {
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LOG_CRITICAL(Kernel, "Callback fired for invalid thread {:08X}", proper_handle);
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return;
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}
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bool resume = true;
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2018-10-03 22:47:57 +00:00
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if (thread->GetStatus() == ThreadStatus::WaitSynchAny ||
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thread->GetStatus() == ThreadStatus::WaitSynchAll ||
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thread->GetStatus() == ThreadStatus::WaitHLEEvent) {
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2018-08-28 16:30:33 +00:00
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// Remove the thread from each of its waiting objects' waitlists
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2018-10-03 22:47:57 +00:00
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for (const auto& object : thread->GetWaitObjects()) {
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2018-08-28 16:30:33 +00:00
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object->RemoveWaitingThread(thread.get());
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}
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2018-10-03 22:47:57 +00:00
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thread->ClearWaitObjects();
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2018-08-28 16:30:33 +00:00
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// Invoke the wakeup callback before clearing the wait objects
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2018-10-03 22:47:57 +00:00
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if (thread->HasWakeupCallback()) {
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resume = thread->InvokeWakeupCallback(ThreadWakeupReason::Timeout, thread, nullptr, 0);
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2018-08-28 16:30:33 +00:00
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}
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}
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2018-10-03 22:47:57 +00:00
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if (thread->GetMutexWaitAddress() != 0 || thread->GetCondVarWaitAddress() != 0 ||
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thread->GetWaitHandle() != 0) {
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ASSERT(thread->GetStatus() == ThreadStatus::WaitMutex);
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thread->SetMutexWaitAddress(0);
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thread->SetCondVarWaitAddress(0);
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thread->SetWaitHandle(0);
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2018-08-28 16:30:33 +00:00
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2018-10-03 22:47:57 +00:00
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auto* const lock_owner = thread->GetLockOwner();
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2018-08-28 16:30:33 +00:00
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// Threads waking up by timeout from WaitProcessWideKey do not perform priority inheritance
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// and don't have a lock owner unless SignalProcessWideKey was called first and the thread
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// wasn't awakened due to the mutex already being acquired.
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2018-10-03 22:47:57 +00:00
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if (lock_owner != nullptr) {
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2018-08-28 16:30:33 +00:00
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lock_owner->RemoveMutexWaiter(thread);
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}
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}
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2018-10-03 22:47:57 +00:00
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if (thread->GetArbiterWaitAddress() != 0) {
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ASSERT(thread->GetStatus() == ThreadStatus::WaitArb);
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thread->SetArbiterWaitAddress(0);
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2018-08-28 16:30:33 +00:00
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}
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if (resume) {
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thread->ResumeFromWait();
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}
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}
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/// The timer callback event, called when a timer is fired
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static void TimerCallback(u64 timer_handle, int cycles_late) {
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const auto proper_handle = static_cast<Handle>(timer_handle);
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auto& system = Core::System::GetInstance();
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SharedPtr<Timer> timer = system.Kernel().RetrieveTimerFromCallbackHandleTable(proper_handle);
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if (timer == nullptr) {
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LOG_CRITICAL(Kernel, "Callback fired for invalid timer {:016X}", timer_handle);
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return;
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}
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timer->Signal(cycles_late);
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}
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2014-05-14 01:57:12 +00:00
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2018-08-28 16:30:33 +00:00
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struct KernelCore::Impl {
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void Initialize(KernelCore& kernel) {
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Shutdown();
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2015-04-28 02:12:35 +00:00
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2018-08-28 16:30:33 +00:00
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InitializeResourceLimits(kernel);
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InitializeThreads();
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InitializeTimers();
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}
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void Shutdown() {
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next_object_id = 0;
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next_process_id = 10;
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next_thread_id = 1;
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process_list.clear();
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2018-09-07 00:34:51 +00:00
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current_process.reset();
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2018-08-28 16:30:33 +00:00
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handle_table.Clear();
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resource_limits.fill(nullptr);
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thread_wakeup_callback_handle_table.Clear();
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thread_wakeup_event_type = nullptr;
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timer_callback_handle_table.Clear();
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timer_callback_event_type = nullptr;
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2018-09-02 15:58:58 +00:00
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named_ports.clear();
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2018-08-28 16:30:33 +00:00
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}
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void InitializeResourceLimits(KernelCore& kernel) {
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// Create the four resource limits that the system uses
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// Create the APPLICATION resource limit
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SharedPtr<ResourceLimit> resource_limit = ResourceLimit::Create(kernel, "Applications");
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resource_limit->max_priority = 0x18;
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resource_limit->max_commit = 0x4000000;
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resource_limit->max_threads = 0x20;
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resource_limit->max_events = 0x20;
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resource_limit->max_mutexes = 0x20;
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resource_limit->max_semaphores = 0x8;
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resource_limit->max_timers = 0x8;
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resource_limit->max_shared_mems = 0x10;
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resource_limit->max_address_arbiters = 0x2;
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resource_limit->max_cpu_time = 0x1E;
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resource_limits[static_cast<u8>(ResourceLimitCategory::APPLICATION)] = resource_limit;
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// Create the SYS_APPLET resource limit
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resource_limit = ResourceLimit::Create(kernel, "System Applets");
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resource_limit->max_priority = 0x4;
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resource_limit->max_commit = 0x5E00000;
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resource_limit->max_threads = 0x1D;
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resource_limit->max_events = 0xB;
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resource_limit->max_mutexes = 0x8;
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resource_limit->max_semaphores = 0x4;
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resource_limit->max_timers = 0x4;
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resource_limit->max_shared_mems = 0x8;
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resource_limit->max_address_arbiters = 0x3;
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resource_limit->max_cpu_time = 0x2710;
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resource_limits[static_cast<u8>(ResourceLimitCategory::SYS_APPLET)] = resource_limit;
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// Create the LIB_APPLET resource limit
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resource_limit = ResourceLimit::Create(kernel, "Library Applets");
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resource_limit->max_priority = 0x4;
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resource_limit->max_commit = 0x600000;
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resource_limit->max_threads = 0xE;
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resource_limit->max_events = 0x8;
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resource_limit->max_mutexes = 0x8;
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resource_limit->max_semaphores = 0x4;
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resource_limit->max_timers = 0x4;
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resource_limit->max_shared_mems = 0x8;
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resource_limit->max_address_arbiters = 0x1;
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resource_limit->max_cpu_time = 0x2710;
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resource_limits[static_cast<u8>(ResourceLimitCategory::LIB_APPLET)] = resource_limit;
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// Create the OTHER resource limit
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resource_limit = ResourceLimit::Create(kernel, "Others");
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resource_limit->max_priority = 0x4;
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resource_limit->max_commit = 0x2180000;
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resource_limit->max_threads = 0xE1;
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resource_limit->max_events = 0x108;
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resource_limit->max_mutexes = 0x25;
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resource_limit->max_semaphores = 0x43;
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resource_limit->max_timers = 0x2C;
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resource_limit->max_shared_mems = 0x1F;
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resource_limit->max_address_arbiters = 0x2D;
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resource_limit->max_cpu_time = 0x3E8;
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resource_limits[static_cast<u8>(ResourceLimitCategory::OTHER)] = resource_limit;
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}
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void InitializeThreads() {
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thread_wakeup_event_type =
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CoreTiming::RegisterEvent("ThreadWakeupCallback", ThreadWakeupCallback);
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}
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void InitializeTimers() {
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timer_callback_handle_table.Clear();
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timer_callback_event_type = CoreTiming::RegisterEvent("TimerCallback", TimerCallback);
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}
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std::atomic<u32> next_object_id{0};
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2015-05-11 23:23:45 +00:00
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// TODO(Subv): Start the process ids from 10 for now, as lower PIDs are
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// reserved for low-level services
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2018-08-28 16:30:33 +00:00
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std::atomic<u32> next_process_id{10};
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std::atomic<u32> next_thread_id{1};
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// Lists all processes that exist in the current session.
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std::vector<SharedPtr<Process>> process_list;
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2018-09-07 00:34:51 +00:00
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SharedPtr<Process> current_process;
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2018-08-28 16:30:33 +00:00
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Kernel::HandleTable handle_table;
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std::array<SharedPtr<ResourceLimit>, 4> resource_limits;
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/// The event type of the generic timer callback event
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CoreTiming::EventType* timer_callback_event_type = nullptr;
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// TODO(yuriks): This can be removed if Timer objects are explicitly pooled in the future,
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// allowing us to simply use a pool index or similar.
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Kernel::HandleTable timer_callback_handle_table;
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CoreTiming::EventType* thread_wakeup_event_type = nullptr;
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// TODO(yuriks): This can be removed if Thread objects are explicitly pooled in the future,
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// allowing us to simply use a pool index or similar.
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Kernel::HandleTable thread_wakeup_callback_handle_table;
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2018-09-02 15:58:58 +00:00
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/// Map of named ports managed by the kernel, which can be retrieved using
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/// the ConnectToPort SVC.
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NamedPortTable named_ports;
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2018-08-28 16:30:33 +00:00
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};
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KernelCore::KernelCore() : impl{std::make_unique<Impl>()} {}
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KernelCore::~KernelCore() {
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Shutdown();
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}
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void KernelCore::Initialize() {
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impl->Initialize(*this);
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}
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void KernelCore::Shutdown() {
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impl->Shutdown();
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}
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Kernel::HandleTable& KernelCore::HandleTable() {
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return impl->handle_table;
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}
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const Kernel::HandleTable& KernelCore::HandleTable() const {
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return impl->handle_table;
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}
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SharedPtr<ResourceLimit> KernelCore::ResourceLimitForCategory(
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ResourceLimitCategory category) const {
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return impl->resource_limits.at(static_cast<std::size_t>(category));
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}
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SharedPtr<Thread> KernelCore::RetrieveThreadFromWakeupCallbackHandleTable(Handle handle) const {
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return impl->thread_wakeup_callback_handle_table.Get<Thread>(handle);
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}
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SharedPtr<Timer> KernelCore::RetrieveTimerFromCallbackHandleTable(Handle handle) const {
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return impl->timer_callback_handle_table.Get<Timer>(handle);
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}
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void KernelCore::AppendNewProcess(SharedPtr<Process> process) {
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impl->process_list.push_back(std::move(process));
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}
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2018-09-07 00:34:51 +00:00
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void KernelCore::MakeCurrentProcess(SharedPtr<Process> process) {
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impl->current_process = std::move(process);
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}
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SharedPtr<Process>& KernelCore::CurrentProcess() {
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return impl->current_process;
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}
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const SharedPtr<Process>& KernelCore::CurrentProcess() const {
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return impl->current_process;
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}
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2018-09-02 15:58:58 +00:00
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void KernelCore::AddNamedPort(std::string name, SharedPtr<ClientPort> port) {
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impl->named_ports.emplace(std::move(name), std::move(port));
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}
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KernelCore::NamedPortTable::iterator KernelCore::FindNamedPort(const std::string& name) {
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return impl->named_ports.find(name);
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}
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KernelCore::NamedPortTable::const_iterator KernelCore::FindNamedPort(
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const std::string& name) const {
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return impl->named_ports.find(name);
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}
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bool KernelCore::IsValidNamedPort(NamedPortTable::const_iterator port) const {
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return port != impl->named_ports.cend();
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}
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2018-08-28 16:30:33 +00:00
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u32 KernelCore::CreateNewObjectID() {
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return impl->next_object_id++;
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}
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u32 KernelCore::CreateNewThreadID() {
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return impl->next_thread_id++;
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2014-05-20 22:13:25 +00:00
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}
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2018-08-28 16:30:33 +00:00
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u32 KernelCore::CreateNewProcessID() {
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return impl->next_process_id++;
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}
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2015-08-06 00:26:52 +00:00
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2018-08-28 16:30:33 +00:00
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ResultVal<Handle> KernelCore::CreateTimerCallbackHandle(const SharedPtr<Timer>& timer) {
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return impl->timer_callback_handle_table.Create(timer);
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}
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CoreTiming::EventType* KernelCore::ThreadWakeupCallbackEventType() const {
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return impl->thread_wakeup_event_type;
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}
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CoreTiming::EventType* KernelCore::TimerCallbackEventType() const {
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return impl->timer_callback_event_type;
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}
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Kernel::HandleTable& KernelCore::ThreadWakeupCallbackHandleTable() {
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return impl->thread_wakeup_callback_handle_table;
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}
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2015-08-06 00:26:52 +00:00
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2018-08-28 16:30:33 +00:00
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const Kernel::HandleTable& KernelCore::ThreadWakeupCallbackHandleTable() const {
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return impl->thread_wakeup_callback_handle_table;
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2014-05-14 01:57:12 +00:00
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}
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2014-05-22 23:06:12 +00:00
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2018-01-01 18:25:37 +00:00
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} // namespace Kernel
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