Mercurial > hg > truffle

diff src/os/bsd/vm/os_bsd.hpp @ 17924:917873d2983d
8040140: System.nanoTime() is slow and non-monotonic on OS X Reviewed-by: sspitsyn, shade, dholmes, acorn
author: sla
date: Fri, 25 Apr 2014 07:40:33 +0200
parents: b0133e4187d3
children: 52b4284cb496
--- a/src/os/bsd/vm/os_bsd.hpp	Mon May 05 15:10:43 2014 +0200
+++ b/src/os/bsd/vm/os_bsd.hpp	Fri Apr 25 07:40:33 2014 +0200
@@ -58,7 +58,13 @@
   // For signal flags diagnostics
   static int sigflags[MAXSIGNUM];
 
+#ifdef __APPLE__
+  // mach_absolute_time
+  static mach_timebase_info_data_t _timebase_info;
+  static volatile uint64_t         _max_abstime;
+#else
   static int (*_clock_gettime)(clockid_t, struct timespec *);
+#endif
 
   static GrowableArray<int>* _cpu_to_node;
 
@@ -135,11 +141,11 @@
   static void clock_init(void);
 
   static inline bool supports_monotonic_clock() {
+#ifdef __APPLE__
+    return true;
+#else
     return _clock_gettime != NULL;
-  }
-
-  static int clock_gettime(clockid_t clock_id, struct timespec *tp) {
-    return _clock_gettime ? _clock_gettime(clock_id, tp) : -1;
+#endif
   }
 
   // Stack repair handling