Standardize Comments

use double slashes (//) only for comments.

closes #4820

No functional change.

src/thread.cpp

@@ -40,8 +40,8 @@ namespace Stockfish {
 ThreadPool Threads; // Global object
 
 
-/// Thread constructor launches the thread and waits until it goes to sleep
-/// in idle_loop(). Note that 'searching' and 'exit' should be already set.
+// Thread constructor launches the thread and waits until it goes to sleep
+// in idle_loop(). Note that 'searching' and 'exit' should be already set.
 
 Thread::Thread(size_t n) : idx(n), stdThread(&Thread::idle_loop, this) {
 
@@ -49,8 +49,8 @@ Thread::Thread(size_t n) : idx(n), stdThread(&Thread::idle_loop, this) {
 }
 
 
-/// Thread destructor wakes up the thread in idle_loop() and waits
-/// for its termination. Thread should be already waiting.
+// Thread destructor wakes up the thread in idle_loop() and waits
+// for its termination. Thread should be already waiting.
 
 Thread::~Thread() {
 
@@ -62,7 +62,7 @@ Thread::~Thread() {
 }
 
 
-/// Thread::clear() reset histories, usually before a new game
+// Thread::clear() reset histories, usually before a new game
 
 void Thread::clear() {
 
@@ -78,7 +78,7 @@ void Thread::clear() {
 }
 
 
-/// Thread::start_searching() wakes up the thread that will start the search
+// Thread::start_searching() wakes up the thread that will start the search
 
 void Thread::start_searching() {
   mutex.lock();
@@ -88,8 +88,8 @@ void Thread::start_searching() {
 }
 
 
-/// Thread::wait_for_search_finished() blocks on the condition variable
-/// until the thread has finished searching.
+// Thread::wait_for_search_finished() blocks on the condition variable
+// until the thread has finished searching.
 
 void Thread::wait_for_search_finished() {
 
@@ -98,15 +98,15 @@ void Thread::wait_for_search_finished() {
 }
 
 
-/// Thread::idle_loop() is where the thread is parked, blocked on the
-/// condition variable, when it has no work to do.
+// Thread::idle_loop() is where the thread is parked, blocked on the
+// condition variable, when it has no work to do.
 
 void Thread::idle_loop() {
 
   // If OS already scheduled us on a different group than 0 then don't overwrite
   // the choice, eventually we are one of many one-threaded processes running on
   // some Windows NUMA hardware, for instance in fishtest. To make it simple,
-  // just check if running threads are below a threshold, in this case all this
+  // just check if running threads are below a threshold, in this case, all this
   // NUMA machinery is not needed.
   if (Options["Threads"] > 8)
       WinProcGroup::bindThisThread(idx);
@@ -127,9 +127,9 @@ void Thread::idle_loop() {
   }
 }
 
-/// ThreadPool::set() creates/destroys threads to match the requested number.
-/// Created and launched threads will immediately go to sleep in idle_loop.
-/// Upon resizing, threads are recreated to allow for binding if necessary.
+// ThreadPool::set() creates/destroys threads to match the requested number.
+// Created and launched threads will immediately go to sleep in idle_loop.
+// Upon resizing, threads are recreated to allow for binding if necessary.
 
 void ThreadPool::set(size_t requested) {
 
@@ -158,7 +158,7 @@ void ThreadPool::set(size_t requested) {
 }
 
 
-/// ThreadPool::clear() sets threadPool data to initial values
+// ThreadPool::clear() sets threadPool data to initial values
 
 void ThreadPool::clear() {
 
@@ -172,8 +172,8 @@ void ThreadPool::clear() {
 }
 
 
-/// ThreadPool::start_thinking() wakes up main thread waiting in idle_loop() and
-/// returns immediately. Main thread will wake up other threads and start the search.
+// ThreadPool::start_thinking() wakes up main thread waiting in idle_loop() and
+// returns immediately. Main thread will wake up other threads and start the search.
 
 void ThreadPool::start_thinking(Position& pos, StateListPtr& states,
                                 const Search::LimitsType& limits, bool ponderMode) {
@@ -225,7 +225,7 @@ Thread* ThreadPool::get_best_thread() const {
     std::map<Move, int64_t> votes;
     Value minScore = VALUE_NONE;
 
-    // Find minimum score of all threads
+    // Find the minimum score of all threads
     for (Thread* th: threads)
         minScore = std::min(minScore, th->rootMoves[0].score);
 
@@ -256,7 +256,7 @@ Thread* ThreadPool::get_best_thread() const {
 }
 
 
-/// Start non-main threads
+// Start non-main threads
 
 void ThreadPool::start_searching() {
 
@@ -266,7 +266,7 @@ void ThreadPool::start_searching() {
 }
 
 
-/// Wait for non-main threads
+// Wait for non-main threads
 
 void ThreadPool::wait_for_search_finished() const {