Remove openFiles in pawns. (#1917)

[stockfish] / src / syzygy / tbprobe.cpp

diff --git a/src/syzygy/tbprobe.cpp b/src/syzygy/tbprobe.cpp
index d0b59f056a9c02119c7ca3ce94e3c6a7dd1341bd..57c7d872e1b496a104774582de1a07838b4587af 100644 (file)
--- a/src/syzygy/tbprobe.cpp
+++ b/src/syzygy/tbprobe.cpp
@@ -224,8 +224,9 @@ public:
             exit(1);
         }
 #else
+        // Note FILE_FLAG_RANDOM_ACCESS is only a hint to Windows and as such may get ignored.
         HANDLE fd = CreateFile(fname.c_str(), GENERIC_READ, FILE_SHARE_READ, nullptr,
-                               OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, nullptr);
+                               OPEN_EXISTING, FILE_FLAG_RANDOM_ACCESS, nullptr);
 
         if (fd == INVALID_HANDLE_VALUE)
             return *baseAddress = nullptr, nullptr;
@@ -1107,10 +1108,10 @@ void* mapped(TBTable<Type>& e, const Position& pos) {
 
     static Mutex mutex;
 
-    // Use 'aquire' to avoid a thread reads 'ready' == true while another is
-    // still working, this could happen due to compiler reordering.
+    // Use 'acquire' to avoid a thread reading 'ready' == true while
+    // another is still working. (compiler reordering may cause this).
     if (e.ready.load(std::memory_order_acquire))
-        return e.baseAddress; // Could be nullptr if file does not exsist
+        return e.baseAddress; // Could be nullptr if file does not exist
 
     std::unique_lock<Mutex> lk(mutex);