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Merge pull request #5871 from lioncash/address-arb
k_address_arbiter: Minor cleanup
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commit
9078f4a9c7
@ -118,9 +118,10 @@ ResultCode KAddressArbiter::SignalAndIncrementIfEqual(VAddr addr, s32 value, s32
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// Check the userspace value.
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s32 user_value{};
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R_UNLESS(UpdateIfEqual(system, std::addressof(user_value), addr, value, value + 1),
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Svc::ResultInvalidCurrentMemory);
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if (!UpdateIfEqual(system, &user_value, addr, value, value + 1)) {
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LOG_ERROR(Kernel, "Invalid current memory!");
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return Svc::ResultInvalidCurrentMemory;
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}
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if (user_value != value) {
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return Svc::ResultInvalidState;
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}
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@ -146,25 +147,23 @@ ResultCode KAddressArbiter::SignalAndModifyByWaitingCountIfEqual(VAddr addr, s32
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// Perform signaling.
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s32 num_waiters{};
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{
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KScopedSchedulerLock sl(kernel);
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[[maybe_unused]] const KScopedSchedulerLock sl(kernel);
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auto it = thread_tree.nfind_light({addr, -1});
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// Determine the updated value.
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s32 new_value{};
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if (/*GetTargetFirmware() >= TargetFirmware_7_0_0*/ true) {
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if (count <= 0) {
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if ((it != thread_tree.end()) && (it->GetAddressArbiterKey() == addr)) {
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if (it != thread_tree.end() && it->GetAddressArbiterKey() == addr) {
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new_value = value - 2;
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} else {
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new_value = value + 1;
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}
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} else {
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if ((it != thread_tree.end()) && (it->GetAddressArbiterKey() == addr)) {
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if (it != thread_tree.end() && it->GetAddressArbiterKey() == addr) {
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auto tmp_it = it;
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s32 tmp_num_waiters{};
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while ((++tmp_it != thread_tree.end()) &&
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(tmp_it->GetAddressArbiterKey() == addr)) {
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if ((tmp_num_waiters++) >= count) {
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while (++tmp_it != thread_tree.end() && tmp_it->GetAddressArbiterKey() == addr) {
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if (tmp_num_waiters++ >= count) {
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break;
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}
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}
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@ -178,43 +177,20 @@ ResultCode KAddressArbiter::SignalAndModifyByWaitingCountIfEqual(VAddr addr, s32
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new_value = value + 1;
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}
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}
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} else {
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if (count <= 0) {
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if ((it != thread_tree.end()) && (it->GetAddressArbiterKey() == addr)) {
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new_value = value - 1;
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} else {
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new_value = value + 1;
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}
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} else {
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auto tmp_it = it;
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s32 tmp_num_waiters{};
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while ((tmp_it != thread_tree.end()) && (tmp_it->GetAddressArbiterKey() == addr) &&
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(tmp_num_waiters < count + 1)) {
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++tmp_num_waiters;
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++tmp_it;
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}
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if (tmp_num_waiters == 0) {
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new_value = value + 1;
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} else if (tmp_num_waiters <= count) {
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new_value = value - 1;
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} else {
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new_value = value;
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}
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}
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}
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// Check the userspace value.
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s32 user_value{};
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bool succeeded{};
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if (value != new_value) {
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succeeded = UpdateIfEqual(system, std::addressof(user_value), addr, value, new_value);
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succeeded = UpdateIfEqual(system, &user_value, addr, value, new_value);
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} else {
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succeeded = ReadFromUser(system, std::addressof(user_value), addr);
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succeeded = ReadFromUser(system, &user_value, addr);
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}
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R_UNLESS(succeeded, Svc::ResultInvalidCurrentMemory);
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if (!succeeded) {
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LOG_ERROR(Kernel, "Invalid current memory!");
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return Svc::ResultInvalidCurrentMemory;
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}
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if (user_value != value) {
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return Svc::ResultInvalidState;
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}
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@ -255,9 +231,9 @@ ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement
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s32 user_value{};
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bool succeeded{};
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if (decrement) {
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succeeded = DecrementIfLessThan(system, std::addressof(user_value), addr, value);
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succeeded = DecrementIfLessThan(system, &user_value, addr, value);
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} else {
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succeeded = ReadFromUser(system, std::addressof(user_value), addr);
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succeeded = ReadFromUser(system, &user_value, addr);
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}
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if (!succeeded) {
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@ -278,7 +254,7 @@ ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement
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}
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// Set the arbiter.
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cur_thread->SetAddressArbiter(std::addressof(thread_tree), addr);
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cur_thread->SetAddressArbiter(&thread_tree, addr);
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thread_tree.insert(*cur_thread);
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cur_thread->SetState(ThreadState::Waiting);
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cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Arbitration);
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@ -299,7 +275,7 @@ ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement
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// Get the result.
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KSynchronizationObject* dummy{};
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return cur_thread->GetWaitResult(std::addressof(dummy));
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return cur_thread->GetWaitResult(&dummy);
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}
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ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) {
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@ -320,7 +296,7 @@ ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) {
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// Read the value from userspace.
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s32 user_value{};
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if (!ReadFromUser(system, std::addressof(user_value), addr)) {
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if (!ReadFromUser(system, &user_value, addr)) {
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slp.CancelSleep();
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return Svc::ResultInvalidCurrentMemory;
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}
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@ -338,7 +314,7 @@ ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) {
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}
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// Set the arbiter.
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cur_thread->SetAddressArbiter(std::addressof(thread_tree), addr);
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cur_thread->SetAddressArbiter(&thread_tree, addr);
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thread_tree.insert(*cur_thread);
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cur_thread->SetState(ThreadState::Waiting);
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cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Arbitration);
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@ -359,7 +335,7 @@ ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) {
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// Get the result.
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KSynchronizationObject* dummy{};
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return cur_thread->GetWaitResult(std::addressof(dummy));
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return cur_thread->GetWaitResult(&dummy);
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}
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} // namespace Kernel
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