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Merge pull request #5871 from lioncash/address-arb

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k_address_arbiter: Minor cleanup
This commit is contained in:
bunnei 2021-02-06 13:05:19 -08:00 committed by GitHub
commit 9078f4a9c7
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 30 additions and 54 deletions
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68
src/core/hle/kernel/k_address_arbiter.cpp
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@ -118,9 +118,10 @@ ResultCode KAddressArbiter::SignalAndIncrementIfEqual(VAddr addr, s32 value, s32
// Check the userspace value.
s32 user_value{};
R_UNLESS(UpdateIfEqual(system, std::addressof(user_value), addr, value, value + 1),
Svc::ResultInvalidCurrentMemory);
if (!UpdateIfEqual(system, &user_value, addr, value, value + 1)) {
LOG_ERROR(Kernel, "Invalid current memory!");
return Svc::ResultInvalidCurrentMemory;
}
if (user_value != value) {
return Svc::ResultInvalidState;
}
@ -146,25 +147,23 @@ ResultCode KAddressArbiter::SignalAndModifyByWaitingCountIfEqual(VAddr addr, s32
// Perform signaling.
s32 num_waiters{};
{
KScopedSchedulerLock sl(kernel);
[[maybe_unused]] const KScopedSchedulerLock sl(kernel);
auto it = thread_tree.nfind_light({addr, -1});
// Determine the updated value.
s32 new_value{};
if (/*GetTargetFirmware() >= TargetFirmware_7_0_0*/ true) {
if (count <= 0) {
if ((it != thread_tree.end()) && (it->GetAddressArbiterKey() == addr)) {
if (it != thread_tree.end() && it->GetAddressArbiterKey() == addr) {
new_value = value - 2;
} else {
new_value = value + 1;
}
} else {
if ((it != thread_tree.end()) && (it->GetAddressArbiterKey() == addr)) {
if (it != thread_tree.end() && it->GetAddressArbiterKey() == addr) {
auto tmp_it = it;
s32 tmp_num_waiters{};
while ((++tmp_it != thread_tree.end()) &&
(tmp_it->GetAddressArbiterKey() == addr)) {
if ((tmp_num_waiters++) >= count) {
while (++tmp_it != thread_tree.end() && tmp_it->GetAddressArbiterKey() == addr) {
if (tmp_num_waiters++ >= count) {
break;
}
}
@ -178,43 +177,20 @@ ResultCode KAddressArbiter::SignalAndModifyByWaitingCountIfEqual(VAddr addr, s32
new_value = value + 1;
}
}
} else {
if (count <= 0) {
if ((it != thread_tree.end()) && (it->GetAddressArbiterKey() == addr)) {
new_value = value - 1;
} else {
new_value = value + 1;
}
} else {
auto tmp_it = it;
s32 tmp_num_waiters{};
while ((tmp_it != thread_tree.end()) && (tmp_it->GetAddressArbiterKey() == addr) &&
(tmp_num_waiters < count + 1)) {
++tmp_num_waiters;
++tmp_it;
}
if (tmp_num_waiters == 0) {
new_value = value + 1;
} else if (tmp_num_waiters <= count) {
new_value = value - 1;
} else {
new_value = value;
}
}
}
// Check the userspace value.
s32 user_value{};
bool succeeded{};
if (value != new_value) {
succeeded = UpdateIfEqual(system, std::addressof(user_value), addr, value, new_value);
succeeded = UpdateIfEqual(system, &user_value, addr, value, new_value);
} else {
succeeded = ReadFromUser(system, std::addressof(user_value), addr);
succeeded = ReadFromUser(system, &user_value, addr);
}
R_UNLESS(succeeded, Svc::ResultInvalidCurrentMemory);
if (!succeeded) {
LOG_ERROR(Kernel, "Invalid current memory!");
return Svc::ResultInvalidCurrentMemory;
}
if (user_value != value) {
return Svc::ResultInvalidState;
}
@ -255,9 +231,9 @@ ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement
s32 user_value{};
bool succeeded{};
if (decrement) {
succeeded = DecrementIfLessThan(system, std::addressof(user_value), addr, value);
succeeded = DecrementIfLessThan(system, &user_value, addr, value);
} else {
succeeded = ReadFromUser(system, std::addressof(user_value), addr);
succeeded = ReadFromUser(system, &user_value, addr);
}
if (!succeeded) {
@ -278,7 +254,7 @@ ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement
}
// Set the arbiter.
cur_thread->SetAddressArbiter(std::addressof(thread_tree), addr);
cur_thread->SetAddressArbiter(&thread_tree, addr);
thread_tree.insert(*cur_thread);
cur_thread->SetState(ThreadState::Waiting);
cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Arbitration);
@ -299,7 +275,7 @@ ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement
// Get the result.
KSynchronizationObject* dummy{};
return cur_thread->GetWaitResult(std::addressof(dummy));
return cur_thread->GetWaitResult(&dummy);
}
ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) {
@ -320,7 +296,7 @@ ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) {
// Read the value from userspace.
s32 user_value{};
if (!ReadFromUser(system, std::addressof(user_value), addr)) {
if (!ReadFromUser(system, &user_value, addr)) {
slp.CancelSleep();
return Svc::ResultInvalidCurrentMemory;
}
@ -338,7 +314,7 @@ ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) {
}
// Set the arbiter.
cur_thread->SetAddressArbiter(std::addressof(thread_tree), addr);
cur_thread->SetAddressArbiter(&thread_tree, addr);
thread_tree.insert(*cur_thread);
cur_thread->SetState(ThreadState::Waiting);
cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Arbitration);
@ -359,7 +335,7 @@ ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) {
// Get the result.
KSynchronizationObject* dummy{};
return cur_thread->GetWaitResult(std::addressof(dummy));
return cur_thread->GetWaitResult(&dummy);
}
} // namespace Kernel