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 03:11:18 +01:00
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2018-08-28 17:30:33 +01:00
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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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2019-03-05 16:54:06 +00:00
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#include "core/hle/kernel/address_arbiter.h"
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2018-09-02 16:58:58 +01:00
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#include "core/hle/kernel/client_port.h"
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2017-05-30 00:45:42 +01:00
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#include "core/hle/kernel/handle_table.h"
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2016-09-21 07:52:38 +01:00
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#include "core/hle/kernel/kernel.h"
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2015-05-04 04:01:16 +01:00
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#include "core/hle/kernel/process.h"
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2015-08-06 01:26:52 +01:00
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#include "core/hle/kernel/resource_limit.h"
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2014-05-10 03:11:18 +01:00
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#include "core/hle/kernel/thread.h"
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2018-08-28 17:30:33 +01:00
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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 03:11:18 +01:00
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2014-05-20 23:13:25 +01:00
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namespace Kernel {
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2014-05-10 03:11:18 +01:00
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2018-08-28 17:30:33 +01:00
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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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2019-03-24 22:11:32 +00:00
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static void ThreadWakeupCallback(u64 thread_handle, [[maybe_unused]] s64 cycles_late) {
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2018-08-28 17:30:33 +01:00
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const auto proper_handle = static_cast<Handle>(thread_handle);
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2018-10-28 21:44:46 +00:00
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const auto& system = Core::System::GetInstance();
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2018-08-28 17:30:33 +01:00
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// Lock the global kernel mutex when we enter the kernel HLE.
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2019-04-01 17:29:59 +01:00
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std::lock_guard lock{HLE::g_hle_lock};
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2018-08-28 17:30:33 +01:00
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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 23:47:57 +01:00
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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 17:30:33 +01:00
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// Remove the thread from each of its waiting objects' waitlists
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2018-10-03 23:47:57 +01:00
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for (const auto& object : thread->GetWaitObjects()) {
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2018-08-28 17:30:33 +01:00
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object->RemoveWaitingThread(thread.get());
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}
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2018-10-03 23:47:57 +01:00
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thread->ClearWaitObjects();
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2018-08-28 17:30:33 +01:00
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// Invoke the wakeup callback before clearing the wait objects
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2018-10-03 23:47:57 +01:00
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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 17:30:33 +01:00
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}
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}
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2018-10-03 23:47:57 +01:00
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if (thread->GetMutexWaitAddress() != 0 || thread->GetCondVarWaitAddress() != 0 ||
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thread->GetWaitHandle() != 0) {
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2019-03-20 00:57:31 +00:00
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ASSERT(thread->GetStatus() == ThreadStatus::WaitMutex ||
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thread->GetStatus() == ThreadStatus::WaitCondVar);
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2018-10-03 23:47:57 +01:00
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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 17:30:33 +01:00
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2018-10-03 23:47:57 +01:00
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auto* const lock_owner = thread->GetLockOwner();
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2018-08-28 17:30:33 +01:00
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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 23:47:57 +01:00
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if (lock_owner != nullptr) {
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2018-08-28 17:30:33 +01:00
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lock_owner->RemoveMutexWaiter(thread);
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}
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}
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2018-10-03 23:47:57 +01:00
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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 17:30:33 +01:00
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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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struct KernelCore::Impl {
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2019-03-07 23:48:14 +00:00
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explicit Impl(Core::System& system) : system{system} {}
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2019-03-05 17:28:10 +00:00
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void Initialize(KernelCore& kernel) {
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2018-08-28 17:30:33 +01:00
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Shutdown();
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2015-04-28 03:12:35 +01:00
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2018-11-19 17:54:06 +00:00
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InitializeSystemResourceLimit(kernel);
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2019-03-05 17:28:10 +00:00
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InitializeThreads();
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2018-08-28 17:30:33 +01:00
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}
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void Shutdown() {
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next_object_id = 0;
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2018-12-19 03:53:58 +00:00
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next_process_id = Process::ProcessIDMin;
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2018-08-28 17:30:33 +01:00
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next_thread_id = 1;
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process_list.clear();
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2018-10-10 05:42:10 +01:00
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current_process = nullptr;
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2018-08-28 17:30:33 +01:00
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2018-11-19 17:54:06 +00:00
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system_resource_limit = nullptr;
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2018-08-28 17:30:33 +01:00
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thread_wakeup_callback_handle_table.Clear();
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thread_wakeup_event_type = nullptr;
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2018-09-02 16:58:58 +01:00
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named_ports.clear();
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2018-08-28 17:30:33 +01:00
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}
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2018-11-19 17:54:06 +00:00
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// Creates the default system resource limit
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void InitializeSystemResourceLimit(KernelCore& kernel) {
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2019-04-01 21:46:00 +01:00
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system_resource_limit = ResourceLimit::Create(kernel);
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2018-11-19 17:54:06 +00:00
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// If setting the default system values fails, then something seriously wrong has occurred.
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ASSERT(system_resource_limit->SetLimitValue(ResourceType::PhysicalMemory, 0x200000000)
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.IsSuccess());
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ASSERT(system_resource_limit->SetLimitValue(ResourceType::Threads, 800).IsSuccess());
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ASSERT(system_resource_limit->SetLimitValue(ResourceType::Events, 700).IsSuccess());
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ASSERT(system_resource_limit->SetLimitValue(ResourceType::TransferMemory, 200).IsSuccess());
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ASSERT(system_resource_limit->SetLimitValue(ResourceType::Sessions, 900).IsSuccess());
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2018-08-28 17:30:33 +01:00
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}
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2019-03-05 17:28:10 +00:00
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void InitializeThreads() {
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2018-08-28 17:30:33 +01:00
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thread_wakeup_event_type =
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2019-03-05 17:28:10 +00:00
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system.CoreTiming().RegisterEvent("ThreadWakeupCallback", ThreadWakeupCallback);
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2018-08-28 17:30:33 +01:00
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}
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std::atomic<u32> next_object_id{0};
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2018-12-19 03:53:58 +00:00
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std::atomic<u64> next_process_id{Process::ProcessIDMin};
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2018-12-19 03:37:01 +00:00
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std::atomic<u64> next_thread_id{1};
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2018-08-28 17:30:33 +01:00
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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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2018-10-10 05:42:10 +01:00
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Process* current_process = nullptr;
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2018-08-28 17:30:33 +01:00
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2018-11-19 17:54:06 +00:00
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SharedPtr<ResourceLimit> system_resource_limit;
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2018-08-28 17:30:33 +01:00
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2019-02-12 17:32:15 +00:00
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Core::Timing::EventType* thread_wakeup_event_type = nullptr;
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2018-08-28 17:30:33 +01:00
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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 16:58:58 +01:00
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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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2019-03-05 17:28:10 +00:00
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// System context
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Core::System& system;
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2018-08-28 17:30:33 +01:00
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};
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2019-03-05 17:28:10 +00:00
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KernelCore::KernelCore(Core::System& system) : impl{std::make_unique<Impl>(system)} {}
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2018-08-28 17:30:33 +01:00
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KernelCore::~KernelCore() {
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Shutdown();
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}
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2019-03-05 17:28:10 +00:00
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void KernelCore::Initialize() {
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impl->Initialize(*this);
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2018-08-28 17:30:33 +01:00
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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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2018-11-19 17:54:06 +00:00
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SharedPtr<ResourceLimit> KernelCore::GetSystemResourceLimit() const {
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return impl->system_resource_limit;
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2018-08-28 17:30:33 +01:00
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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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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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2018-10-10 05:42:10 +01:00
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void KernelCore::MakeCurrentProcess(Process* process) {
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impl->current_process = process;
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2018-09-07 01:34:51 +01:00
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}
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2018-10-10 05:42:10 +01:00
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Process* KernelCore::CurrentProcess() {
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2018-09-07 01:34:51 +01:00
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return impl->current_process;
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}
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2018-10-10 05:42:10 +01:00
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const Process* KernelCore::CurrentProcess() const {
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2018-09-07 01:34:51 +01:00
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return impl->current_process;
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}
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2019-03-20 19:03:52 +00:00
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const std::vector<SharedPtr<Process>>& KernelCore::GetProcessList() const {
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return impl->process_list;
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}
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2018-09-02 16:58:58 +01:00
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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 17:30:33 +01:00
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u32 KernelCore::CreateNewObjectID() {
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return impl->next_object_id++;
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}
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2018-12-19 03:37:01 +00:00
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u64 KernelCore::CreateNewThreadID() {
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2018-08-28 17:30:33 +01:00
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return impl->next_thread_id++;
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2014-05-20 23:13:25 +01:00
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}
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2018-12-19 03:16:53 +00:00
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u64 KernelCore::CreateNewProcessID() {
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2018-08-28 17:30:33 +01:00
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return impl->next_process_id++;
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}
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2015-08-06 01:26:52 +01:00
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2019-02-12 17:32:15 +00:00
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Core::Timing::EventType* KernelCore::ThreadWakeupCallbackEventType() const {
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2018-08-28 17:30:33 +01:00
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return impl->thread_wakeup_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 01:26:52 +01:00
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2018-08-28 17:30:33 +01:00
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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 02:57:12 +01:00
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}
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2014-05-23 00:06:12 +01:00
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2018-01-01 18:25:37 +00:00
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} // namespace Kernel
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