nobu	2016-03-17 17:14:53 +0900 (Thu, 17 Mar 2016)

  New Revision: 54145

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=54145

  Log:
    gc.c: tick for POWER arch
    
    * gc.c (tick): Use __builtin_ppc_get_timebase for POWER arch.
      [Fix GH-1291]
    
    This gives a little performance improvement
    
            user     system      total        real
    Before: 20.870000   0.000000  20.870000 ( 20.893959)
    After:  20.720000   0.000000  20.720000 ( 20.733970)

  Modified files:
    trunk/ChangeLog
    trunk/gc.c
Index: gc.c
===================================================================
--- gc.c	(revision 54144)
+++ gc.c	(revision 54145)
@@ -935,6 +935,18 @@ tick(void) https://github.com/ruby/ruby/blob/trunk/gc.c#L935
     return ((unsigned long long)lo)|( ((unsigned long long)hi)<<32);
 }
 
+#elif defined(__powerpc64__) && \
+	( __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
+typedef unsigned long long tick_t;
+#define PRItick "llu"
+
+static __inline__ tick_t
+tick(void)
+{
+    unsigned long long val = __builtin_ppc_get_timebase();
+    return val;
+}
+
 #elif defined(_WIN32) && defined(_MSC_VER)
 #include <intrin.h>
 typedef unsigned __int64 tick_t;
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 54144)
+++ ChangeLog	(revision 54145)
@@ -1,3 +1,8 @@ https://github.com/ruby/ruby/blob/trunk/ChangeLog#L1
+Thu Mar 17 17:14:51 2016  Dinar Valeev  <dvaleev@s...>
+
+	* gc.c (tick): Use __builtin_ppc_get_timebase for POWER arch.
+	  [Fix GH-1291]
+
 Thu Mar 17 11:51:48 2016  NARUSE, Yui  <naruse@r...>
 
 	* lib/securerandom.rb (gen_random): to avoid blocking on Windows.

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