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Code Issues Releases Activity

hle: kernel: KAddressArbiter: Migrate to updated KThreadQueue.

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This commit is contained in:
bunnei 2021-11-09 19:23:37 -08:00
parent 2f89456041
commit 15c721b909
1 changed files with 39 additions and 43 deletions
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82
src/core/hle/kernel/k_address_arbiter.cpp
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@ -8,6 +8,7 @@
#include "core/hle/kernel/k_scheduler.h"
#include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
#include "core/hle/kernel/k_thread.h"
#include "core/hle/kernel/k_thread_queue.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/svc_results.h"
#include "core/hle/kernel/time_manager.h"
@ -85,6 +86,27 @@ bool UpdateIfEqual(Core::System& system, s32* out, VAddr address, s32 value, s32
return true;
}
class ThreadQueueImplForKAddressArbiter final : public KThreadQueue {
private:
KAddressArbiter::ThreadTree* m_tree;
public:
explicit ThreadQueueImplForKAddressArbiter(KernelCore& kernel_, KAddressArbiter::ThreadTree* t)
: KThreadQueue(kernel_), m_tree(t) {}
virtual void CancelWait(KThread* waiting_thread, ResultCode wait_result,
bool cancel_timer_task) override {
// If the thread is waiting on an address arbiter, remove it from the tree.
if (waiting_thread->IsWaitingForAddressArbiter()) {
m_tree->erase(m_tree->iterator_to(*waiting_thread));
waiting_thread->ClearAddressArbiter();
}
// Invoke the base cancel wait handler.
KThreadQueue::CancelWait(waiting_thread, wait_result, cancel_timer_task);
}
};
} // namespace
ResultCode KAddressArbiter::Signal(VAddr addr, s32 count) {
@ -96,14 +118,14 @@ ResultCode KAddressArbiter::Signal(VAddr addr, s32 count) {
auto it = thread_tree.nfind_light({addr, -1});
while ((it != thread_tree.end()) && (count <= 0 || num_waiters < count) &&
(it->GetAddressArbiterKey() == addr)) {
// End the thread's wait.
KThread* target_thread = std::addressof(*it);
target_thread->SetWaitResult(ResultSuccess);
target_thread->EndWait(ResultSuccess);
ASSERT(target_thread->IsWaitingForAddressArbiter());
target_thread->Wakeup();
target_thread->ClearAddressArbiter();
it = thread_tree.erase(it);
target_thread->ClearAddressArbiter();
++num_waiters;
}
}
@ -129,14 +151,14 @@ ResultCode KAddressArbiter::SignalAndIncrementIfEqual(VAddr addr, s32 value, s32
auto it = thread_tree.nfind_light({addr, -1});
while ((it != thread_tree.end()) && (count <= 0 || num_waiters < count) &&
(it->GetAddressArbiterKey() == addr)) {
// End the thread's wait.
KThread* target_thread = std::addressof(*it);
target_thread->SetWaitResult(ResultSuccess);
target_thread->EndWait(ResultSuccess);
ASSERT(target_thread->IsWaitingForAddressArbiter());
target_thread->Wakeup();
target_thread->ClearAddressArbiter();
it = thread_tree.erase(it);
target_thread->ClearAddressArbiter();
++num_waiters;
}
}
@ -197,14 +219,14 @@ ResultCode KAddressArbiter::SignalAndModifyByWaitingCountIfEqual(VAddr addr, s32
while ((it != thread_tree.end()) && (count <= 0 || num_waiters < count) &&
(it->GetAddressArbiterKey() == addr)) {
// End the thread's wait.
KThread* target_thread = std::addressof(*it);
target_thread->SetWaitResult(ResultSuccess);
target_thread->EndWait(ResultSuccess);
ASSERT(target_thread->IsWaitingForAddressArbiter());
target_thread->Wakeup();
target_thread->ClearAddressArbiter();
it = thread_tree.erase(it);
target_thread->ClearAddressArbiter();
++num_waiters;
}
}
@ -214,6 +236,7 @@ ResultCode KAddressArbiter::SignalAndModifyByWaitingCountIfEqual(VAddr addr, s32
ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement, s64 timeout) {
// Prepare to wait.
KThread* cur_thread = kernel.CurrentScheduler()->GetCurrentThread();
ThreadQueueImplForKAddressArbiter wait_queue(kernel, std::addressof(thread_tree));
{
KScopedSchedulerLockAndSleep slp{kernel, cur_thread, timeout};
@ -224,9 +247,6 @@ ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement
return ResultTerminationRequested;
}
// Set the synced object.
cur_thread->SetWaitResult(ResultTimedOut);
// Read the value from userspace.
s32 user_value{};
bool succeeded{};
@ -256,23 +276,12 @@ ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement
// Set the arbiter.
cur_thread->SetAddressArbiter(&thread_tree, addr);
thread_tree.insert(*cur_thread);
cur_thread->SetState(ThreadState::Waiting);
// Wait for the thread to finish.
cur_thread->BeginWait(std::addressof(wait_queue));
cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Arbitration);
}
// Cancel the timer wait.
kernel.TimeManager().UnscheduleTimeEvent(cur_thread);
// Remove from the address arbiter.
{
KScopedSchedulerLock sl(kernel);
if (cur_thread->IsWaitingForAddressArbiter()) {
thread_tree.erase(thread_tree.iterator_to(*cur_thread));
cur_thread->ClearAddressArbiter();
}
}
// Get the result.
return cur_thread->GetWaitResult();
}
@ -280,6 +289,7 @@ ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement
ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) {
// Prepare to wait.
KThread* cur_thread = kernel.CurrentScheduler()->GetCurrentThread();
ThreadQueueImplForKAddressArbiter wait_queue(kernel, std::addressof(thread_tree));
{
KScopedSchedulerLockAndSleep slp{kernel, cur_thread, timeout};
@ -290,9 +300,6 @@ ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) {
return ResultTerminationRequested;
}
// Set the synced object.
cur_thread->SetWaitResult(ResultTimedOut);
// Read the value from userspace.
s32 user_value{};
if (!ReadFromUser(system, &user_value, addr)) {
@ -315,23 +322,12 @@ ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) {
// Set the arbiter.
cur_thread->SetAddressArbiter(&thread_tree, addr);
thread_tree.insert(*cur_thread);
cur_thread->SetState(ThreadState::Waiting);
// Wait for the thread to finish.
cur_thread->BeginWait(std::addressof(wait_queue));
cur_thread->SetWaitReasonForDebugging(ThreadWaitReasonForDebugging::Arbitration);
}
// Cancel the timer wait.
kernel.TimeManager().UnscheduleTimeEvent(cur_thread);
// Remove from the address arbiter.
{
KScopedSchedulerLock sl(kernel);
if (cur_thread->IsWaitingForAddressArbiter()) {
thread_tree.erase(thread_tree.iterator_to(*cur_thread));
cur_thread->ClearAddressArbiter();
}
}
// Get the result.
return cur_thread->GetWaitResult();
}