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kernel: Resolve sign conversion warnings

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Uncovered a bug within Thread's SetCoreAndAffinityMask() where an
unsigned variable (ideal_core) was being compared against "< 0", which
would always be a false condition.

We can also get rid of an unused function (GetNextProcessorId) which contained a sign
mismatch warning.
This commit is contained in:
Lioncash 2019-11-12 03:32:53 -05:00
parent 86c397dd6e
commit 12dc918937
4 changed files with 60 additions and 72 deletions
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48
src/core/hle/kernel/thread.cpp
View file

@ -77,18 +77,6 @@ void Thread::CancelWakeupTimer() {
callback_handle);
}
static std::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");
@ -173,7 +161,7 @@ ResultVal<SharedPtr<Thread>> Thread::Create(KernelCore& kernel, std::string name
if (!Memory::IsValidVirtualAddress(owner_process, entry_point)) {
LOG_ERROR(Kernel_SVC, "(name={}): invalid entry {:016X}", name, entry_point);
// TODO (bunnei): Find the correct error code to use here
return ResultCode(-1);
return RESULT_UNKNOWN;
}
auto& system = Core::System::GetInstance();
@ -401,7 +389,7 @@ void Thread::SetCurrentPriority(u32 new_priority) {
ResultCode Thread::SetCoreAndAffinityMask(s32 new_core, u64 new_affinity_mask) {
const auto HighestSetCore = [](u64 mask, u32 max_cores) {
for (s32 core = max_cores - 1; core >= 0; core--) {
for (s32 core = static_cast<s32>(max_cores - 1); core >= 0; core--) {
if (((mask >> core) & 1) != 0) {
return core;
}
@ -425,7 +413,7 @@ ResultCode Thread::SetCoreAndAffinityMask(s32 new_core, u64 new_affinity_mask) {
if (old_affinity_mask != new_affinity_mask) {
const s32 old_core = processor_id;
if (processor_id >= 0 && ((affinity_mask >> processor_id) & 1) == 0) {
if (ideal_core < 0) {
if (static_cast<s32>(ideal_core) < 0) {
processor_id = HighestSetCore(affinity_mask, GlobalScheduler::NUM_CPU_CORES);
} else {
processor_id = ideal_core;
@ -447,23 +435,23 @@ void Thread::AdjustSchedulingOnStatus(u32 old_flags) {
ThreadSchedStatus::Runnable) {
// In this case the thread was running, now it's pausing/exitting
if (processor_id >= 0) {
scheduler.Unschedule(current_priority, processor_id, this);
scheduler.Unschedule(current_priority, static_cast<u32>(processor_id), this);
}
for (s32 core = 0; core < GlobalScheduler::NUM_CPU_CORES; core++) {
if (core != processor_id && ((affinity_mask >> core) & 1) != 0) {
scheduler.Unsuggest(current_priority, static_cast<u32>(core), this);
for (u32 core = 0; core < GlobalScheduler::NUM_CPU_CORES; core++) {
if (core != static_cast<u32>(processor_id) && ((affinity_mask >> core) & 1) != 0) {
scheduler.Unsuggest(current_priority, core, this);
}
}
} else if (GetSchedulingStatus() == ThreadSchedStatus::Runnable) {
// The thread is now set to running from being stopped
if (processor_id >= 0) {
scheduler.Schedule(current_priority, processor_id, this);
scheduler.Schedule(current_priority, static_cast<u32>(processor_id), this);
}
for (s32 core = 0; core < GlobalScheduler::NUM_CPU_CORES; core++) {
if (core != processor_id && ((affinity_mask >> core) & 1) != 0) {
scheduler.Suggest(current_priority, static_cast<u32>(core), this);
for (u32 core = 0; core < GlobalScheduler::NUM_CPU_CORES; core++) {
if (core != static_cast<u32>(processor_id) && ((affinity_mask >> core) & 1) != 0) {
scheduler.Suggest(current_priority, core, this);
}
}
}
@ -477,11 +465,11 @@ void Thread::AdjustSchedulingOnPriority(u32 old_priority) {
}
auto& scheduler = Core::System::GetInstance().GlobalScheduler();
if (processor_id >= 0) {
scheduler.Unschedule(old_priority, processor_id, this);
scheduler.Unschedule(old_priority, static_cast<u32>(processor_id), this);
}
for (u32 core = 0; core < GlobalScheduler::NUM_CPU_CORES; core++) {
if (core != processor_id && ((affinity_mask >> core) & 1) != 0) {
if (core != static_cast<u32>(processor_id) && ((affinity_mask >> core) & 1) != 0) {
scheduler.Unsuggest(old_priority, core, this);
}
}
@ -491,14 +479,14 @@ void Thread::AdjustSchedulingOnPriority(u32 old_priority) {
if (processor_id >= 0) {
if (current_thread == this) {
scheduler.SchedulePrepend(current_priority, processor_id, this);
scheduler.SchedulePrepend(current_priority, static_cast<u32>(processor_id), this);
} else {
scheduler.Schedule(current_priority, processor_id, this);
scheduler.Schedule(current_priority, static_cast<u32>(processor_id), this);
}
}
for (u32 core = 0; core < GlobalScheduler::NUM_CPU_CORES; core++) {
if (core != processor_id && ((affinity_mask >> core) & 1) != 0) {
if (core != static_cast<u32>(processor_id) && ((affinity_mask >> core) & 1) != 0) {
scheduler.Suggest(current_priority, core, this);
}
}
@ -515,7 +503,7 @@ void Thread::AdjustSchedulingOnAffinity(u64 old_affinity_mask, s32 old_core) {
for (u32 core = 0; core < GlobalScheduler::NUM_CPU_CORES; core++) {
if (((old_affinity_mask >> core) & 1) != 0) {
if (core == old_core) {
if (core == static_cast<u32>(old_core)) {
scheduler.Unschedule(current_priority, core, this);
} else {
scheduler.Unsuggest(current_priority, core, this);
@ -525,7 +513,7 @@ void Thread::AdjustSchedulingOnAffinity(u64 old_affinity_mask, s32 old_core) {
for (u32 core = 0; core < GlobalScheduler::NUM_CPU_CORES; core++) {
if (((affinity_mask >> core) & 1) != 0) {
if (core == processor_id) {
if (core == static_cast<u32>(processor_id)) {
scheduler.Schedule(current_priority, core, this);
} else {
scheduler.Suggest(current_priority, core, this);