[Valgrind-developers] valgrind/none/tests

[Nicholas N. <nj...@ca...>]

CVS commit by nethercote: 

Arch-abstraction:
- conditionally compile x86-specific line within yield.c.


  M +1 -0      Makefile.am   1.47
  M +4 -0      yield.c   1.2


--- valgrind/none/tests/Makefile.am  #1.46:1.47
@@ -108,4 +108,5 @@
 #tls2_so_LDFLAGS                = -shared
 yield_SOURCES           = yield.c
+yield_CFLAGS            = $(AM_CFLAGS) -D__$(VG_ARCH)__
 yield_LDADD             = -lpthread
 

--- valgrind/none/tests/yield.c  #1.1:1.2
@@ -36,5 +36,9 @@ static void *th2(void *v)
         while(alive) {
                 rep_nop++;
+#ifdef __x86__
+                // This gives a hint to a P4, telling it to pause 
+                // (ie. we're in a spin-wait loop)
                 asm volatile ("rep; nop" : : : "memory");
+#endif
         }