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thread: Support core change on ResumeFromWait and improve ChangeCore.

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This commit is contained in:
bunnei 2018-05-07 22:29:48 -04:00
parent 91af2f94e8
commit fbd7afefaa
1 changed files with 73 additions and 42 deletions
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111
src/core/hle/kernel/thread.cpp
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@ -154,6 +154,18 @@ void Thread::CancelWakeupTimer() {
CoreTiming::UnscheduleEvent(ThreadWakeupEventType, callback_handle);
}
static boost::optional<s32> GetNextProcessorId(u64 mask) {
for (s32 index = 0; index < Core::NUM_CPU_CORES; ++index) {
if (mask & (1ULL << index)) {
if (!Core::System().GetInstance().Scheduler(index)->GetCurrentThread()) {
// Core is enabled and not running any threads, use this one
return index;
}
}
}
return {};
}
void Thread::ResumeFromWait() {
ASSERT_MSG(wait_objects.empty(), "Thread is waking up while waiting for objects");
@ -188,7 +200,36 @@ void Thread::ResumeFromWait() {
wakeup_callback = nullptr;
status = THREADSTATUS_READY;
scheduler->ScheduleThread(this, current_priority);
boost::optional<s32> new_processor_id = GetNextProcessorId(mask);
if (!new_processor_id) {
new_processor_id = processor_id;
}
if (ideal_core != -1 &&
Core::System().GetInstance().Scheduler(ideal_core)->GetCurrentThread() == nullptr) {
new_processor_id = ideal_core;
}
ASSERT(*new_processor_id < 4);
// Add thread to new core's scheduler
auto& next_scheduler = Core::System().GetInstance().Scheduler(*new_processor_id);
if (*new_processor_id != processor_id) {
// Remove thread from previous core's scheduler
scheduler->RemoveThread(this);
next_scheduler->AddThread(this, current_priority);
}
processor_id = *new_processor_id;
// If the thread was ready, unschedule from the previous core and schedule on the new core
scheduler->UnscheduleThread(this, current_priority);
next_scheduler->ScheduleThread(this, current_priority);
// Change thread's scheduler
scheduler = next_scheduler;
Core::System::GetInstance().CpuCore(processor_id).PrepareReschedule();
}
@ -267,7 +308,7 @@ ResultVal<SharedPtr<Thread>> Thread::Create(std::string name, VAddr entry_point,
thread->last_running_ticks = CoreTiming::GetTicks();
thread->processor_id = processor_id;
thread->ideal_core = processor_id;
thread->mask = 1 << processor_id;
thread->mask = 1ULL << processor_id;
thread->wait_objects.clear();
thread->mutex_wait_address = 0;
thread->condvar_wait_address = 0;
@ -417,55 +458,45 @@ void Thread::UpdatePriority() {
lock_owner->UpdatePriority();
}
static s32 GetNextProcessorId(u64 mask) {
s32 processor_id{};
for (s32 index = 0; index < Core::NUM_CPU_CORES; ++index) {
if (mask & (1ULL << index)) {
if (!Core::System().GetInstance().Scheduler(index)->GetCurrentThread()) {
// Core is enabled and not running any threads, use this one
return index;
}
// Core is enabled, but running a thread, less ideal
processor_id = index;
}
}
return processor_id;
}
void Thread::ChangeCore(u32 core, u64 mask) {
const s32 new_processor_id{GetNextProcessorId(mask)};
ASSERT(ideal_core == core); // We're not doing anything with this yet, so assert the expected
ASSERT(new_processor_id < Core::NUM_CPU_CORES);
if (new_processor_id == processor_id) {
// Already running on ideal core, nothing to do here
return;
}
ASSERT(status != THREADSTATUS_RUNNING); // Unsupported
processor_id = new_processor_id;
ideal_core = core;
mask = mask;
// Add thread to new core's scheduler
auto& next_scheduler = Core::System().GetInstance().Scheduler(new_processor_id);
next_scheduler->AddThread(this, current_priority);
if (status != THREADSTATUS_READY) {
return;
}
boost::optional<s32> new_processor_id{GetNextProcessorId(mask)};
if (!new_processor_id) {
new_processor_id = processor_id;
}
if (ideal_core != -1 &&
Core::System().GetInstance().Scheduler(ideal_core)->GetCurrentThread() == nullptr) {
new_processor_id = ideal_core;
}
ASSERT(new_processor_id < 4);
// Add thread to new core's scheduler
auto& next_scheduler = Core::System().GetInstance().Scheduler(*new_processor_id);
if (*new_processor_id != processor_id) {
// Remove thread from previous core's scheduler
scheduler->RemoveThread(this);
next_scheduler->AddThread(this, current_priority);
}
processor_id = *new_processor_id;
if (status == THREADSTATUS_READY) {
// If the thread was ready, unschedule from the previous core and schedule on the new core
scheduler->UnscheduleThread(this, current_priority);
next_scheduler->ScheduleThread(this, current_priority);
}
// Remove thread from previous core's scheduler
scheduler->RemoveThread(this);
// Change thread's scheduler
scheduler = next_scheduler;
Core::System::GetInstance().CpuCore(processor_id).PrepareReschedule();
}
////////////////////////////////////////////////////////////////////////////////////////////////////