Fixes and corrections on formatting.

src/common/bit_util.h

@@ -59,7 +59,6 @@ inline u64 CountLeadingZeroes64(u64 value) {
 }
 #endif
 
-
 #ifdef _MSC_VER
 inline u32 CountTrailingZeroes32(u32 value) {
     unsigned long trailing_zero = 0;

src/common/multi_level_queue.h

@@ -7,12 +7,21 @@
 #include <array>
 #include <iterator>
 #include <list>
+#include <utility>
 
 #include "common/bit_util.h"
 #include "common/common_types.h"
 
 namespace Common {
 
+/**
+ * A MultiLevelQueue is a type of priority queue which has the following characteristics:
+ * - iteratable through each of its elements.
+ * - back can be obtained.
+ * - O(1) add, lookup (both front and back)
+ * - discrete priorities and a max of 64 priorities (limited domain)
+ * This type of priority queue is normaly used for managing threads within an scheduler
+ */
 template <typename T, std::size_t Depth>
 class MultiLevelQueue {
 public:
@@ -37,9 +46,7 @@ public:
         friend bool operator==(const iterator_impl& lhs, const iterator_impl& rhs) {
             if (lhs.IsEnd() && rhs.IsEnd())
                 return true;
-            if (lhs.current_priority == rhs.current_priority)
-                return lhs.it == rhs.it;
-            return false;
+            return std::tie(lhs.current_priority, lhs.it) == std::tie(rhs.current_priority, rhs.it);
         }
 
         friend bool operator!=(const iterator_impl& lhs, const iterator_impl& rhs) {
@@ -301,7 +308,6 @@ private:
     using const_list_iterator = typename std::list<T>::const_iterator;
 
     static void ListShiftForward(std::list<T>& list, const std::size_t shift = 1) {
-        // NOTE: May want to consider making this an assertion or something
         if (shift >= list.size()) {
             return;
         }

src/core/hle/kernel/scheduler.cpp

@@ -45,10 +45,10 @@ Thread* Scheduler::PopNextReadyThread() {
     Thread* next = nullptr;
     Thread* thread = GetCurrentThread();
 
-
     if (thread && thread->GetStatus() == ThreadStatus::Running) {
-        if (ready_queue.empty())
+        if (ready_queue.empty()) {
             return thread;
+        }
         // We have to do better than the current thread.
         // This call returns null when that's not possible.
         next = ready_queue.front();
@@ -56,8 +56,9 @@ Thread* Scheduler::PopNextReadyThread() {
             next = thread;
         }
     } else {
-        if (ready_queue.empty())
+        if (ready_queue.empty()) {
             return nullptr;
+        }
         next = ready_queue.front();
     }
 
@@ -176,8 +177,9 @@ void Scheduler::UnscheduleThread(Thread* thread, u32 priority) {
 
 void Scheduler::SetThreadPriority(Thread* thread, u32 priority) {
     std::lock_guard<std::mutex> lock(scheduler_mutex);
-    if (thread->GetPriority() == priority)
+    if (thread->GetPriority() == priority) {
         return;
+    }
 
     // If thread was ready, adjust queues
     if (thread->GetStatus() == ThreadStatus::Ready)
@@ -188,10 +190,11 @@ Thread* Scheduler::GetNextSuggestedThread(u32 core, u32 maximum_priority) const
     std::lock_guard<std::mutex> lock(scheduler_mutex);
 
     const u32 mask = 1U << core;
-    for (auto& thread : ready_queue) {
-        if ((thread->GetAffinityMask() & mask) != 0 && thread->GetPriority() < maximum_priority)
+    for (auto* thread : ready_queue) {
+        if ((thread->GetAffinityMask() & mask) != 0 && thread->GetPriority() < maximum_priority) {
             return thread;
         }
+    }
     return nullptr;
 }
 

src/tests/common/bit_utils.cpp

@@ -8,35 +8,16 @@
 
 namespace Common {
 
-inline u32 CTZ32(u32 value) {
-  u32 count = 0;
-  while (((value >> count) & 0xf) == 0 && count < 32)
-    count += 4;
-  while (((value >> count) & 1) == 0 && count < 32)
-    count++;
-  return count;
-}
-
-inline u64 CTZ64(u64 value) {
-  u64 count = 0;
-  while (((value >> count) & 0xf) == 0 && count < 64)
-    count += 4;
-  while (((value >> count) & 1) == 0 && count < 64)
-    count++;
-  return count;
-}
-
-
-TEST_CASE("BitUtils", "[common]") {
-    REQUIRE(Common::CountTrailingZeroes32(0) == CTZ32(0));
-    REQUIRE(Common::CountTrailingZeroes64(0) == CTZ64(0));
-    REQUIRE(Common::CountTrailingZeroes32(9) == CTZ32(9));
-    REQUIRE(Common::CountTrailingZeroes32(8) == CTZ32(8));
-    REQUIRE(Common::CountTrailingZeroes32(0x801000) == CTZ32(0x801000));
-    REQUIRE(Common::CountTrailingZeroes64(9) == CTZ64(9));
-    REQUIRE(Common::CountTrailingZeroes64(8) == CTZ64(8));
-    REQUIRE(Common::CountTrailingZeroes64(0x801000) == CTZ64(0x801000));
-    REQUIRE(Common::CountTrailingZeroes64(0x801000000000UL) == CTZ64(0x801000000000UL));
+TEST_CASE("BitUtils::CountTrailingZeroes", "[common]") {
+    REQUIRE(Common::CountTrailingZeroes32(0) == 32);
+    REQUIRE(Common::CountTrailingZeroes64(0) == 64);
+    REQUIRE(Common::CountTrailingZeroes32(9) == 0);
+    REQUIRE(Common::CountTrailingZeroes32(8) == 3);
+    REQUIRE(Common::CountTrailingZeroes32(0x801000) == 12);
+    REQUIRE(Common::CountTrailingZeroes64(9) == 0);
+    REQUIRE(Common::CountTrailingZeroes64(8) == 3);
+    REQUIRE(Common::CountTrailingZeroes64(0x801000) == 12);
+    REQUIRE(Common::CountTrailingZeroes64(0x801000000000UL) == 36);
 }
 
 } // namespace Common