X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fmisc.cpp;h=1e1b220cb533da6cbee0319dcf6f56c66c327c3e;hb=d77d555c72df7045901826e95bc012a0d77ca835;hp=1a092c612fd2abc084acc27366d6644622c0d5d3;hpb=6becc8144686b9a40d8dc9d5e0ce4dec28cbcb6a;p=stockfish

diff --git a/src/misc.cpp b/src/misc.cpp
index 1a092c61..1e1b220c 100644
--- a/src/misc.cpp
+++ b/src/misc.cpp
@@ -68,6 +68,13 @@ const string engine_info(bool to_uci) {
 }
 
 
+/// Convert system time to milliseconds. That's all we need.
+
+Time::point Time::now() {
+  sys_time_t t; system_time(&t); return time_to_msec(t);
+}
+
+
 /// Debug functions used mainly to collect run-time statistics
 
 static uint64_t hits[2], means[2];
@@ -146,6 +153,23 @@ public:
 };
 
 
+/// Used to serialize access to std::cout to avoid multiple threads to write at
+/// the same time.
+
+std::ostream& operator<<(std::ostream& os, SyncCout sc) {
+
+  static Mutex m;
+
+  if (sc == io_lock)
+      m.lock();
+
+  if (sc == io_unlock)
+      m.unlock();
+
+  return os;
+}
+
+
 /// Trampoline helper to avoid moving Logger to misc.h
 void start_logger(bool b) { Logger::start(b); }
 
@@ -184,7 +208,7 @@ void timed_wait(WaitCondition& sleepCond, Lock& sleepLock, int msec) {
   int tm = msec;
 #else
   timespec ts, *tm = &ts;
-  uint64_t ms = Time::current_time().msec() + msec;
+  uint64_t ms = Time::now() + msec;
 
   ts.tv_sec = ms / 1000;
   ts.tv_nsec = (ms % 1000) * 1000000LL;
@@ -203,7 +227,9 @@ void prefetch(char*) {}
 
 #else
 
+#  if defined(__INTEL_COMPILER) || defined(__ICL) || defined(_MSC_VER)
 #   include <xmmintrin.h>
+#  endif
 
 void prefetch(char* addr) {
 
@@ -213,8 +239,13 @@ void prefetch(char* addr) {
    __asm__ ("");
 #  endif
 
+#  if defined(__INTEL_COMPILER) || defined(__ICL) || defined(_MSC_VER)
   _mm_prefetch(addr, _MM_HINT_T2);
   _mm_prefetch(addr+64, _MM_HINT_T2); // 64 bytes ahead
+#  else
+  __builtin_prefetch(addr);
+  __builtin_prefetch(addr+64);
+#  endif
 }
 
 #endif