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authorGravatar Fernando Sahmkow2020-03-03 15:50:38 -0400
committerGravatar Fernando Sahmkow2020-06-27 11:35:23 -0400
commit07993ac8c8c66bbf638dddc7750106f6dfb0e09b (patch)
treedae8c8249f66657e232dc2620489d237e17459c8 /src/core/hle/kernel/scheduler.cpp
parentKernel: Correct Signal on Thread Death and Setup Sync Objects on Thread for D... (diff)
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Kernel: Corrections to Scheduling.
Diffstat (limited to 'src/core/hle/kernel/scheduler.cpp')
-rw-r--r--src/core/hle/kernel/scheduler.cpp26
1 files changed, 13 insertions, 13 deletions
diff --git a/src/core/hle/kernel/scheduler.cpp b/src/core/hle/kernel/scheduler.cpp
index d67d3c5cd..da77967dd 100644
--- a/src/core/hle/kernel/scheduler.cpp
+++ b/src/core/hle/kernel/scheduler.cpp
@@ -47,13 +47,13 @@ u32 GlobalScheduler::SelectThreads() {
47 ASSERT(is_locked); 47 ASSERT(is_locked);
48 const auto update_thread = [](Thread* thread, Scheduler& sched) { 48 const auto update_thread = [](Thread* thread, Scheduler& sched) {
49 sched.guard.lock(); 49 sched.guard.lock();
50 if (thread != sched.selected_thread.get()) { 50 if (thread != sched.selected_thread_set.get()) {
51 if (thread == nullptr) { 51 if (thread == nullptr) {
52 ++sched.idle_selection_count; 52 ++sched.idle_selection_count;
53 } 53 }
54 sched.selected_thread = SharedFrom(thread); 54 sched.selected_thread_set = SharedFrom(thread);
55 } 55 }
56 const bool reschedule_pending = sched.selected_thread != sched.current_thread; 56 const bool reschedule_pending = sched.selected_thread_set != sched.current_thread;
57 sched.is_context_switch_pending = reschedule_pending; 57 sched.is_context_switch_pending = reschedule_pending;
58 std::atomic_thread_fence(std::memory_order_seq_cst); 58 std::atomic_thread_fence(std::memory_order_seq_cst);
59 sched.guard.unlock(); 59 sched.guard.unlock();
@@ -118,6 +118,8 @@ u32 GlobalScheduler::SelectThreads() {
118 suggested); 118 suggested);
119 top_threads[candidate_core] = next; 119 top_threads[candidate_core] = next;
120 break; 120 break;
121 } else {
122 suggested = nullptr;
121 } 123 }
122 } 124 }
123 } 125 }
@@ -590,7 +592,7 @@ void Scheduler::OnThreadStart() {
590} 592}
591 593
592void Scheduler::SwitchContextStep2() { 594void Scheduler::SwitchContextStep2() {
593 Thread* previous_thread = current_thread.get(); 595 Thread* previous_thread = current_thread_prev.get();
594 Thread* new_thread = selected_thread.get(); 596 Thread* new_thread = selected_thread.get();
595 597
596 // Load context of new thread 598 // Load context of new thread
@@ -606,8 +608,6 @@ void Scheduler::SwitchContextStep2() {
606 "Thread must be ready to become running."); 608 "Thread must be ready to become running.");
607 609
608 // Cancel any outstanding wakeup events for this thread 610 // Cancel any outstanding wakeup events for this thread
609 current_thread = SharedFrom(new_thread);
610 new_thread->SetStatus(ThreadStatus::Running);
611 new_thread->SetIsRunning(true); 611 new_thread->SetIsRunning(true);
612 612
613 auto* const thread_owner_process = current_thread->GetOwnerProcess(); 613 auto* const thread_owner_process = current_thread->GetOwnerProcess();
@@ -622,21 +622,21 @@ void Scheduler::SwitchContextStep2() {
622 cpu_core.SetTPIDR_EL0(new_thread->GetTPIDR_EL0()); 622 cpu_core.SetTPIDR_EL0(new_thread->GetTPIDR_EL0());
623 cpu_core.ClearExclusiveState(); 623 cpu_core.ClearExclusiveState();
624 } 624 }
625 } else {
626 current_thread = nullptr;
627 // Note: We do not reset the current process and current page table when idling because
628 // technically we haven't changed processes, our threads are just paused.
629 } 625 }
630 guard.unlock(); 626
627 TryDoContextSwitch();
631} 628}
632 629
633void Scheduler::SwitchContext() { 630void Scheduler::SwitchContext() {
634 Thread* previous_thread = current_thread.get(); 631 current_thread_prev = current_thread;
632 selected_thread = selected_thread_set;
633 Thread* previous_thread = current_thread_prev.get();
635 Thread* new_thread = selected_thread.get(); 634 Thread* new_thread = selected_thread.get();
635 current_thread = selected_thread;
636 636
637 is_context_switch_pending = false; 637 is_context_switch_pending = false;
638 guard.unlock();
638 if (new_thread == previous_thread) { 639 if (new_thread == previous_thread) {
639 guard.unlock();
640 return; 640 return;
641 } 641 }
642 642