From: Marco Costalba <mcostalba@gmail.com>
Date: Tue, 10 Mar 2015 11:47:49 +0000 (+0100)
Subject: Disable spinlocks
X-Git-Url: https://git.sesse.net/?p=stockfish;a=commitdiff_plain;h=04372316b3739e4e99ab1bcfd6923fef9de3110f;hp=8725494966f91af42c77d2f81d2c8a7fe1864316

Disable spinlocks

To allow testing on fishtest.

No functional change.
---

diff --git a/src/thread.h b/src/thread.h
index b4aad5cb..0469dc1d 100644
--- a/src/thread.h
+++ b/src/thread.h
@@ -45,15 +45,11 @@ const size_t MAX_SLAVES_PER_SPLITPOINT = 4;
 
 class Spinlock {
 
-  std::atomic_int lock;
+  Mutex m; // WARNING: Diasabled spinlocks to test on fishtest
 
 public:
-  Spinlock() { lock = 1; } // Init here to workaround a bug with MSVC 2013
-  void acquire() {
-    while (lock.fetch_sub(1, std::memory_order_acquire) != 1)
-        while (lock.load(std::memory_order_relaxed) <= 0) {}
-  }
-  void release() { lock.store(1, std::memory_order_release); }
+  void acquire() { m.lock(); }
+  void release() { m.unlock(); }
 };