Merge pull request #2199 from lioncash/arbiter
kernel/address_arbiter: Convert the address arbiter into a class
This commit is contained in:
commit
75b417489a
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@ -78,6 +78,7 @@ FileSys::VirtualFile GetGameFileFromPath(const FileSys::VirtualFilesystem& vfs,
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return vfs->OpenFile(path, FileSys::Mode::Read);
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}
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struct System::Impl {
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explicit Impl(System& system) : kernel{system} {}
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Cpu& CurrentCpuCore() {
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return cpu_core_manager.GetCurrentCore();
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@ -95,7 +96,7 @@ struct System::Impl {
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LOG_DEBUG(HW_Memory, "initialized OK");
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core_timing.Initialize();
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kernel.Initialize(core_timing);
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kernel.Initialize();
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const auto current_time = std::chrono::duration_cast<std::chrono::seconds>(
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std::chrono::system_clock::now().time_since_epoch());
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@ -265,7 +266,7 @@ struct System::Impl {
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Core::FrameLimiter frame_limiter;
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};
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System::System() : impl{std::make_unique<Impl>()} {}
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System::System() : impl{std::make_unique<Impl>(*this)} {}
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System::~System() = default;
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Cpu& System::CurrentCpuCore() {
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@ -9,6 +9,7 @@
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#include "common/common_types.h"
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#include "core/core.h"
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#include "core/core_cpu.h"
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#include "core/hle/kernel/address_arbiter.h"
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#include "core/hle/kernel/errors.h"
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#include "core/hle/kernel/object.h"
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#include "core/hle/kernel/process.h"
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@ -17,32 +18,144 @@
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#include "core/hle/result.h"
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#include "core/memory.h"
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namespace Kernel::AddressArbiter {
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namespace Kernel {
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namespace {
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// Wake up num_to_wake (or all) threads in a vector.
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void WakeThreads(const std::vector<SharedPtr<Thread>>& waiting_threads, s32 num_to_wake) {
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// Only process up to 'target' threads, unless 'target' is <= 0, in which case process
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// them all.
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std::size_t last = waiting_threads.size();
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if (num_to_wake > 0) {
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last = num_to_wake;
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}
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// Performs actual address waiting logic.
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static ResultCode WaitForAddress(VAddr address, s64 timeout) {
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SharedPtr<Thread> current_thread = GetCurrentThread();
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// Signal the waiting threads.
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for (std::size_t i = 0; i < last; i++) {
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ASSERT(waiting_threads[i]->GetStatus() == ThreadStatus::WaitArb);
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waiting_threads[i]->SetWaitSynchronizationResult(RESULT_SUCCESS);
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waiting_threads[i]->SetArbiterWaitAddress(0);
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waiting_threads[i]->ResumeFromWait();
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}
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}
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} // Anonymous namespace
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AddressArbiter::AddressArbiter(Core::System& system) : system{system} {}
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AddressArbiter::~AddressArbiter() = default;
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ResultCode AddressArbiter::SignalToAddress(VAddr address, s32 num_to_wake) {
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const std::vector<SharedPtr<Thread>> waiting_threads = GetThreadsWaitingOnAddress(address);
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WakeThreads(waiting_threads, num_to_wake);
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return RESULT_SUCCESS;
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}
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ResultCode AddressArbiter::IncrementAndSignalToAddressIfEqual(VAddr address, s32 value,
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s32 num_to_wake) {
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// Ensure that we can write to the address.
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if (!Memory::IsValidVirtualAddress(address)) {
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return ERR_INVALID_ADDRESS_STATE;
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}
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if (static_cast<s32>(Memory::Read32(address)) != value) {
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return ERR_INVALID_STATE;
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}
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Memory::Write32(address, static_cast<u32>(value + 1));
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return SignalToAddress(address, num_to_wake);
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}
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ResultCode AddressArbiter::ModifyByWaitingCountAndSignalToAddressIfEqual(VAddr address, s32 value,
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s32 num_to_wake) {
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// Ensure that we can write to the address.
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if (!Memory::IsValidVirtualAddress(address)) {
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return ERR_INVALID_ADDRESS_STATE;
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}
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// Get threads waiting on the address.
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const std::vector<SharedPtr<Thread>> waiting_threads = GetThreadsWaitingOnAddress(address);
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// Determine the modified value depending on the waiting count.
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s32 updated_value;
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if (waiting_threads.empty()) {
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updated_value = value - 1;
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} else if (num_to_wake <= 0 || waiting_threads.size() <= static_cast<u32>(num_to_wake)) {
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updated_value = value + 1;
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} else {
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updated_value = value;
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}
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if (static_cast<s32>(Memory::Read32(address)) != value) {
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return ERR_INVALID_STATE;
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}
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Memory::Write32(address, static_cast<u32>(updated_value));
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WakeThreads(waiting_threads, num_to_wake);
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return RESULT_SUCCESS;
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}
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ResultCode AddressArbiter::WaitForAddressIfLessThan(VAddr address, s32 value, s64 timeout,
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bool should_decrement) {
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// Ensure that we can read the address.
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if (!Memory::IsValidVirtualAddress(address)) {
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return ERR_INVALID_ADDRESS_STATE;
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}
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const s32 cur_value = static_cast<s32>(Memory::Read32(address));
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if (cur_value >= value) {
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return ERR_INVALID_STATE;
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}
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if (should_decrement) {
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Memory::Write32(address, static_cast<u32>(cur_value - 1));
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}
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// Short-circuit without rescheduling, if timeout is zero.
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if (timeout == 0) {
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return RESULT_TIMEOUT;
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}
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return WaitForAddress(address, timeout);
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}
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ResultCode AddressArbiter::WaitForAddressIfEqual(VAddr address, s32 value, s64 timeout) {
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// Ensure that we can read the address.
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if (!Memory::IsValidVirtualAddress(address)) {
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return ERR_INVALID_ADDRESS_STATE;
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}
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// Only wait for the address if equal.
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if (static_cast<s32>(Memory::Read32(address)) != value) {
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return ERR_INVALID_STATE;
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}
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// Short-circuit without rescheduling, if timeout is zero.
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if (timeout == 0) {
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return RESULT_TIMEOUT;
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}
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return WaitForAddress(address, timeout);
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}
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ResultCode AddressArbiter::WaitForAddress(VAddr address, s64 timeout) {
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SharedPtr<Thread> current_thread = system.CurrentScheduler().GetCurrentThread();
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current_thread->SetArbiterWaitAddress(address);
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current_thread->SetStatus(ThreadStatus::WaitArb);
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current_thread->InvalidateWakeupCallback();
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current_thread->WakeAfterDelay(timeout);
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Core::System::GetInstance().CpuCore(current_thread->GetProcessorID()).PrepareReschedule();
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system.CpuCore(current_thread->GetProcessorID()).PrepareReschedule();
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return RESULT_TIMEOUT;
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}
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// Gets the threads waiting on an address.
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static std::vector<SharedPtr<Thread>> GetThreadsWaitingOnAddress(VAddr address) {
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const auto RetrieveWaitingThreads = [](std::size_t core_index,
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std::vector<SharedPtr<Thread>>& waiting_threads,
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VAddr arb_addr) {
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const auto& scheduler = Core::System::GetInstance().Scheduler(core_index);
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std::vector<SharedPtr<Thread>> AddressArbiter::GetThreadsWaitingOnAddress(VAddr address) const {
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const auto RetrieveWaitingThreads = [this](std::size_t core_index,
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std::vector<SharedPtr<Thread>>& waiting_threads,
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VAddr arb_addr) {
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const auto& scheduler = system.Scheduler(core_index);
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const auto& thread_list = scheduler.GetThreadList();
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for (const auto& thread : thread_list) {
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if (thread->GetArbiterWaitAddress() == arb_addr)
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if (thread->GetArbiterWaitAddress() == arb_addr) {
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waiting_threads.push_back(thread);
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}
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}
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};
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@ -61,118 +174,4 @@ static std::vector<SharedPtr<Thread>> GetThreadsWaitingOnAddress(VAddr address)
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return threads;
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}
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// Wake up num_to_wake (or all) threads in a vector.
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static void WakeThreads(std::vector<SharedPtr<Thread>>& waiting_threads, s32 num_to_wake) {
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// Only process up to 'target' threads, unless 'target' is <= 0, in which case process
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// them all.
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std::size_t last = waiting_threads.size();
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if (num_to_wake > 0)
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last = num_to_wake;
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// Signal the waiting threads.
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for (std::size_t i = 0; i < last; i++) {
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ASSERT(waiting_threads[i]->GetStatus() == ThreadStatus::WaitArb);
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waiting_threads[i]->SetWaitSynchronizationResult(RESULT_SUCCESS);
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waiting_threads[i]->SetArbiterWaitAddress(0);
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waiting_threads[i]->ResumeFromWait();
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}
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}
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// Signals an address being waited on.
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ResultCode SignalToAddress(VAddr address, s32 num_to_wake) {
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std::vector<SharedPtr<Thread>> waiting_threads = GetThreadsWaitingOnAddress(address);
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WakeThreads(waiting_threads, num_to_wake);
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return RESULT_SUCCESS;
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}
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// Signals an address being waited on and increments its value if equal to the value argument.
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ResultCode IncrementAndSignalToAddressIfEqual(VAddr address, s32 value, s32 num_to_wake) {
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// Ensure that we can write to the address.
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if (!Memory::IsValidVirtualAddress(address)) {
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return ERR_INVALID_ADDRESS_STATE;
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}
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if (static_cast<s32>(Memory::Read32(address)) == value) {
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Memory::Write32(address, static_cast<u32>(value + 1));
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} else {
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return ERR_INVALID_STATE;
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}
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return SignalToAddress(address, num_to_wake);
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}
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// Signals an address being waited on and modifies its value based on waiting thread count if equal
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// to the value argument.
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ResultCode ModifyByWaitingCountAndSignalToAddressIfEqual(VAddr address, s32 value,
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s32 num_to_wake) {
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// Ensure that we can write to the address.
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if (!Memory::IsValidVirtualAddress(address)) {
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return ERR_INVALID_ADDRESS_STATE;
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}
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// Get threads waiting on the address.
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std::vector<SharedPtr<Thread>> waiting_threads = GetThreadsWaitingOnAddress(address);
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// Determine the modified value depending on the waiting count.
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s32 updated_value;
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if (waiting_threads.empty()) {
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updated_value = value - 1;
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} else if (num_to_wake <= 0 || waiting_threads.size() <= static_cast<u32>(num_to_wake)) {
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updated_value = value + 1;
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} else {
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updated_value = value;
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}
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if (static_cast<s32>(Memory::Read32(address)) == value) {
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Memory::Write32(address, static_cast<u32>(updated_value));
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} else {
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return ERR_INVALID_STATE;
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}
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WakeThreads(waiting_threads, num_to_wake);
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return RESULT_SUCCESS;
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}
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// Waits on an address if the value passed is less than the argument value, optionally decrementing.
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ResultCode WaitForAddressIfLessThan(VAddr address, s32 value, s64 timeout, bool should_decrement) {
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// Ensure that we can read the address.
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if (!Memory::IsValidVirtualAddress(address)) {
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return ERR_INVALID_ADDRESS_STATE;
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}
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s32 cur_value = static_cast<s32>(Memory::Read32(address));
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if (cur_value < value) {
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if (should_decrement) {
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Memory::Write32(address, static_cast<u32>(cur_value - 1));
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}
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} else {
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return ERR_INVALID_STATE;
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}
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// Short-circuit without rescheduling, if timeout is zero.
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if (timeout == 0) {
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return RESULT_TIMEOUT;
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}
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return WaitForAddress(address, timeout);
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}
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// Waits on an address if the value passed is equal to the argument value.
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ResultCode WaitForAddressIfEqual(VAddr address, s32 value, s64 timeout) {
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// Ensure that we can read the address.
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if (!Memory::IsValidVirtualAddress(address)) {
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return ERR_INVALID_ADDRESS_STATE;
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}
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// Only wait for the address if equal.
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if (static_cast<s32>(Memory::Read32(address)) != value) {
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return ERR_INVALID_STATE;
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}
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// Short-circuit without rescheduling, if timeout is zero.
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if (timeout == 0) {
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return RESULT_TIMEOUT;
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}
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return WaitForAddress(address, timeout);
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}
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} // namespace Kernel::AddressArbiter
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} // namespace Kernel
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@ -5,28 +5,68 @@
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#pragma once
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#include "common/common_types.h"
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#include "core/hle/kernel/address_arbiter.h"
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union ResultCode;
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namespace Kernel::AddressArbiter {
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namespace Core {
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class System;
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}
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enum class ArbitrationType {
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WaitIfLessThan = 0,
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DecrementAndWaitIfLessThan = 1,
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WaitIfEqual = 2,
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namespace Kernel {
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class Thread;
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class AddressArbiter {
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public:
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enum class ArbitrationType {
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WaitIfLessThan = 0,
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DecrementAndWaitIfLessThan = 1,
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WaitIfEqual = 2,
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};
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enum class SignalType {
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Signal = 0,
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IncrementAndSignalIfEqual = 1,
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ModifyByWaitingCountAndSignalIfEqual = 2,
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};
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explicit AddressArbiter(Core::System& system);
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~AddressArbiter();
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AddressArbiter(const AddressArbiter&) = delete;
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AddressArbiter& operator=(const AddressArbiter&) = delete;
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AddressArbiter(AddressArbiter&&) = default;
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AddressArbiter& operator=(AddressArbiter&&) = delete;
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/// Signals an address being waited on.
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ResultCode SignalToAddress(VAddr address, s32 num_to_wake);
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/// Signals an address being waited on and increments its value if equal to the value argument.
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ResultCode IncrementAndSignalToAddressIfEqual(VAddr address, s32 value, s32 num_to_wake);
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/// Signals an address being waited on and modifies its value based on waiting thread count if
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/// equal to the value argument.
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ResultCode ModifyByWaitingCountAndSignalToAddressIfEqual(VAddr address, s32 value,
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s32 num_to_wake);
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/// Waits on an address if the value passed is less than the argument value,
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/// optionally decrementing.
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ResultCode WaitForAddressIfLessThan(VAddr address, s32 value, s64 timeout,
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bool should_decrement);
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/// Waits on an address if the value passed is equal to the argument value.
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ResultCode WaitForAddressIfEqual(VAddr address, s32 value, s64 timeout);
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private:
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// Waits on the given address with a timeout in nanoseconds
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ResultCode WaitForAddress(VAddr address, s64 timeout);
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// Gets the threads waiting on an address.
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std::vector<SharedPtr<Thread>> GetThreadsWaitingOnAddress(VAddr address) const;
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Core::System& system;
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};
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enum class SignalType {
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Signal = 0,
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IncrementAndSignalIfEqual = 1,
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ModifyByWaitingCountAndSignalIfEqual = 2,
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};
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ResultCode SignalToAddress(VAddr address, s32 num_to_wake);
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ResultCode IncrementAndSignalToAddressIfEqual(VAddr address, s32 value, s32 num_to_wake);
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ResultCode ModifyByWaitingCountAndSignalToAddressIfEqual(VAddr address, s32 value, s32 num_to_wake);
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ResultCode WaitForAddressIfLessThan(VAddr address, s32 value, s64 timeout, bool should_decrement);
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ResultCode WaitForAddressIfEqual(VAddr address, s32 value, s64 timeout);
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} // namespace Kernel::AddressArbiter
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} // namespace Kernel
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@ -12,6 +12,7 @@
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#include "core/core.h"
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#include "core/core_timing.h"
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#include "core/hle/kernel/address_arbiter.h"
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#include "core/hle/kernel/client_port.h"
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#include "core/hle/kernel/handle_table.h"
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#include "core/hle/kernel/kernel.h"
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@ -86,11 +87,13 @@ static void ThreadWakeupCallback(u64 thread_handle, [[maybe_unused]] int cycles_
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}
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struct KernelCore::Impl {
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void Initialize(KernelCore& kernel, Core::Timing::CoreTiming& core_timing) {
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explicit Impl(Core::System& system) : address_arbiter{system}, system{system} {}
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void Initialize(KernelCore& kernel) {
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Shutdown();
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InitializeSystemResourceLimit(kernel);
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InitializeThreads(core_timing);
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InitializeThreads();
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}
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void Shutdown() {
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@ -122,9 +125,9 @@ struct KernelCore::Impl {
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ASSERT(system_resource_limit->SetLimitValue(ResourceType::Sessions, 900).IsSuccess());
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}
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void InitializeThreads(Core::Timing::CoreTiming& core_timing) {
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void InitializeThreads() {
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thread_wakeup_event_type =
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core_timing.RegisterEvent("ThreadWakeupCallback", ThreadWakeupCallback);
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system.CoreTiming().RegisterEvent("ThreadWakeupCallback", ThreadWakeupCallback);
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}
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std::atomic<u32> next_object_id{0};
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|
@ -135,6 +138,8 @@ struct KernelCore::Impl {
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std::vector<SharedPtr<Process>> process_list;
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Process* current_process = nullptr;
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Kernel::AddressArbiter address_arbiter;
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SharedPtr<ResourceLimit> system_resource_limit;
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||||
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Core::Timing::EventType* thread_wakeup_event_type = nullptr;
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|
@ -145,15 +150,18 @@ struct KernelCore::Impl {
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/// Map of named ports managed by the kernel, which can be retrieved using
|
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/// the ConnectToPort SVC.
|
||||
NamedPortTable named_ports;
|
||||
|
||||
// System context
|
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Core::System& system;
|
||||
};
|
||||
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KernelCore::KernelCore() : impl{std::make_unique<Impl>()} {}
|
||||
KernelCore::KernelCore(Core::System& system) : impl{std::make_unique<Impl>(system)} {}
|
||||
KernelCore::~KernelCore() {
|
||||
Shutdown();
|
||||
}
|
||||
|
||||
void KernelCore::Initialize(Core::Timing::CoreTiming& core_timing) {
|
||||
impl->Initialize(*this, core_timing);
|
||||
void KernelCore::Initialize() {
|
||||
impl->Initialize(*this);
|
||||
}
|
||||
|
||||
void KernelCore::Shutdown() {
|
||||
|
@ -184,6 +192,14 @@ const Process* KernelCore::CurrentProcess() const {
|
|||
return impl->current_process;
|
||||
}
|
||||
|
||||
AddressArbiter& KernelCore::AddressArbiter() {
|
||||
return impl->address_arbiter;
|
||||
}
|
||||
|
||||
const AddressArbiter& KernelCore::AddressArbiter() const {
|
||||
return impl->address_arbiter;
|
||||
}
|
||||
|
||||
void KernelCore::AddNamedPort(std::string name, SharedPtr<ClientPort> port) {
|
||||
impl->named_ports.emplace(std::move(name), std::move(port));
|
||||
}
|
||||
|
|
|
@ -11,6 +11,10 @@
|
|||
template <typename T>
|
||||
class ResultVal;
|
||||
|
||||
namespace Core {
|
||||
class System;
|
||||
}
|
||||
|
||||
namespace Core::Timing {
|
||||
class CoreTiming;
|
||||
struct EventType;
|
||||
|
@ -18,6 +22,7 @@ struct EventType;
|
|||
|
||||
namespace Kernel {
|
||||
|
||||
class AddressArbiter;
|
||||
class ClientPort;
|
||||
class HandleTable;
|
||||
class Process;
|
||||
|
@ -30,7 +35,14 @@ private:
|
|||
using NamedPortTable = std::unordered_map<std::string, SharedPtr<ClientPort>>;
|
||||
|
||||
public:
|
||||
KernelCore();
|
||||
/// Constructs an instance of the kernel using the given System
|
||||
/// instance as a context for any necessary system-related state,
|
||||
/// such as threads, CPU core state, etc.
|
||||
///
|
||||
/// @post After execution of the constructor, the provided System
|
||||
/// object *must* outlive the kernel instance itself.
|
||||
///
|
||||
explicit KernelCore(Core::System& system);
|
||||
~KernelCore();
|
||||
|
||||
KernelCore(const KernelCore&) = delete;
|
||||
|
@ -40,11 +52,7 @@ public:
|
|||
KernelCore& operator=(KernelCore&&) = delete;
|
||||
|
||||
/// Resets the kernel to a clean slate for use.
|
||||
///
|
||||
/// @param core_timing CoreTiming instance used to create any necessary
|
||||
/// kernel-specific callback events.
|
||||
///
|
||||
void Initialize(Core::Timing::CoreTiming& core_timing);
|
||||
void Initialize();
|
||||
|
||||
/// Clears all resources in use by the kernel instance.
|
||||
void Shutdown();
|
||||
|
@ -67,6 +75,12 @@ public:
|
|||
/// Retrieves a const pointer to the current process.
|
||||
const Process* CurrentProcess() const;
|
||||
|
||||
/// Provides a reference to the kernel's address arbiter.
|
||||
Kernel::AddressArbiter& AddressArbiter();
|
||||
|
||||
/// Provides a const reference to the kernel's address arbiter.
|
||||
const Kernel::AddressArbiter& AddressArbiter() const;
|
||||
|
||||
/// Adds a port to the named port table
|
||||
void AddNamedPort(std::string name, SharedPtr<ClientPort> port);
|
||||
|
||||
|
|
|
@ -1478,13 +1478,14 @@ static ResultCode WaitForAddress(VAddr address, u32 type, s32 value, s64 timeout
|
|||
return ERR_INVALID_ADDRESS;
|
||||
}
|
||||
|
||||
auto& address_arbiter = Core::System::GetInstance().Kernel().AddressArbiter();
|
||||
switch (static_cast<AddressArbiter::ArbitrationType>(type)) {
|
||||
case AddressArbiter::ArbitrationType::WaitIfLessThan:
|
||||
return AddressArbiter::WaitForAddressIfLessThan(address, value, timeout, false);
|
||||
return address_arbiter.WaitForAddressIfLessThan(address, value, timeout, false);
|
||||
case AddressArbiter::ArbitrationType::DecrementAndWaitIfLessThan:
|
||||
return AddressArbiter::WaitForAddressIfLessThan(address, value, timeout, true);
|
||||
return address_arbiter.WaitForAddressIfLessThan(address, value, timeout, true);
|
||||
case AddressArbiter::ArbitrationType::WaitIfEqual:
|
||||
return AddressArbiter::WaitForAddressIfEqual(address, value, timeout);
|
||||
return address_arbiter.WaitForAddressIfEqual(address, value, timeout);
|
||||
default:
|
||||
LOG_ERROR(Kernel_SVC,
|
||||
"Invalid arbitration type, expected WaitIfLessThan, DecrementAndWaitIfLessThan "
|
||||
|
@ -1509,13 +1510,14 @@ static ResultCode SignalToAddress(VAddr address, u32 type, s32 value, s32 num_to
|
|||
return ERR_INVALID_ADDRESS;
|
||||
}
|
||||
|
||||
auto& address_arbiter = Core::System::GetInstance().Kernel().AddressArbiter();
|
||||
switch (static_cast<AddressArbiter::SignalType>(type)) {
|
||||
case AddressArbiter::SignalType::Signal:
|
||||
return AddressArbiter::SignalToAddress(address, num_to_wake);
|
||||
return address_arbiter.SignalToAddress(address, num_to_wake);
|
||||
case AddressArbiter::SignalType::IncrementAndSignalIfEqual:
|
||||
return AddressArbiter::IncrementAndSignalToAddressIfEqual(address, value, num_to_wake);
|
||||
return address_arbiter.IncrementAndSignalToAddressIfEqual(address, value, num_to_wake);
|
||||
case AddressArbiter::SignalType::ModifyByWaitingCountAndSignalIfEqual:
|
||||
return AddressArbiter::ModifyByWaitingCountAndSignalToAddressIfEqual(address, value,
|
||||
return address_arbiter.ModifyByWaitingCountAndSignalToAddressIfEqual(address, value,
|
||||
num_to_wake);
|
||||
default:
|
||||
LOG_ERROR(Kernel_SVC,
|
||||
|
|
|
@ -13,11 +13,11 @@
|
|||
namespace ArmTests {
|
||||
|
||||
TestEnvironment::TestEnvironment(bool mutable_memory_)
|
||||
: mutable_memory(mutable_memory_), test_memory(std::make_shared<TestMemory>(this)) {
|
||||
|
||||
: mutable_memory(mutable_memory_),
|
||||
test_memory(std::make_shared<TestMemory>(this)), kernel{Core::System::GetInstance()} {
|
||||
auto process = Kernel::Process::Create(kernel, "");
|
||||
kernel.MakeCurrentProcess(process.get());
|
||||
page_table = &Core::CurrentProcess()->VMManager().page_table;
|
||||
page_table = &process->VMManager().page_table;
|
||||
|
||||
std::fill(page_table->pointers.begin(), page_table->pointers.end(), nullptr);
|
||||
page_table->special_regions.clear();
|
||||
|
|
Reference in New Issue