fix windows.cpp MySystem::now

src/windows.cpp

@@ -769,24 +769,13 @@ class MySystem: public System {
   }
 
   virtual int64_t now() {
-    static LARGE_INTEGER frequency;
-    static LARGE_INTEGER time;
-    static bool init = true;
-
-    if (init) {
-      QueryPerformanceFrequency(&frequency);
-
-      if (frequency.QuadPart == 0) {
-        return 0;      
-      }
-
-      init = false;
-    }
-
-    QueryPerformanceCounter(&time);
-    return static_cast<int64_t>
-      (((static_cast<double>(time.QuadPart)) * 1000.0) /
-       (static_cast<double>(frequency.QuadPart)));
+    // We used to use _ftime here, but that only gives us 1-second
+    // resolution on Windows 7.  _ftime_s might work better, but MinGW
+    // doesn't have it as of this writing.  So we use this mess instead:
+    FILETIME time;
+    GetSystemTimeAsFileTime(&time);
+    return (((static_cast<int64_t>(time.dwHighDateTime) << 32)
+             | time.dwLowDateTime) / 10000) - 11644473600000LL;
   }
 
   virtual void exit(int code) {

test/Misc.java

@@ -205,6 +205,6 @@ public class Misc {
       }
     }
 
-    System.out.println(java.util.Calendar.getInstance().toString());
+    System.out.println(new java.util.Date().toString());
   }
 }