Revert C++11 merge

[stockfish] / src / misc.cpp

diff --git a/src/misc.cpp b/src/misc.cpp
index 2f99668d4457941b3d9ca0e2b5d0fba56890563a..aa2b23310da53ffd558bc41c4d62ece3c3dd8d33 100644 (file)
--- a/src/misc.cpp
+++ b/src/misc.cpp
@@ -17,7 +17,6 @@
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#include <chrono>
 #include <fstream>
 #include <iomanip>
 #include <iostream>
@@ -27,7 +26,6 @@
 #include "thread.h"
 
 using namespace std;
-using namespace std::chrono;
 
 namespace {
 
@@ -125,17 +123,10 @@ const string engine_info(bool to_uci) {
 }
 
 
-/// Convert system time to milliseconds. That's all we need.
-
-Time::point Time::now() {
-  return duration_cast<milliseconds>(steady_clock::now().time_since_epoch()).count();
-}
-
-
 /// Debug functions used mainly to collect run-time statistics
 
 void dbg_hit_on(bool b) { ++hits[0]; if (b) ++hits[1]; }
-void dbg_hit_on_c(bool c, bool b) { if (c) dbg_hit_on(b); }
+void dbg_hit_on(bool c, bool b) { if (c) dbg_hit_on(b); }
 void dbg_mean_of(int v) { ++means[0]; means[1] += v; }
 
 void dbg_print() {
@@ -155,7 +146,7 @@ void dbg_print() {
 
 std::ostream& operator<<(std::ostream& os, SyncCout sc) {
 
-  static std::mutex m;
+  static Mutex m;
 
   if (sc == IO_LOCK)
       m.lock();
@@ -171,6 +162,25 @@ std::ostream& operator<<(std::ostream& os, SyncCout sc) {
 void start_logger(bool b) { Logger::start(b); }
 
 
+/// timed_wait() waits for msec milliseconds. It is mainly a helper to wrap
+/// the conversion from milliseconds to struct timespec, as used by pthreads.
+
+void timed_wait(WaitCondition& sleepCond, Lock& sleepLock, int msec) {
+
+#ifdef _WIN32
+  int tm = msec;
+#else
+  timespec ts, *tm = &ts;
+  uint64_t ms = Time::now() + msec;
+
+  ts.tv_sec = ms / 1000;
+  ts.tv_nsec = (ms % 1000) * 1000000LL;
+#endif
+
+  cond_timedwait(sleepCond, sleepLock, tm);
+}
+
+
 /// prefetch() preloads the given address in L1/L2 cache. This is a non-blocking
 /// function that doesn't stall the CPU waiting for data to be loaded from memory,
 /// which can be quite slow.