*** empty log message ***

Changes

@@ -13,6 +13,7 @@ TODO: store loop pid_t and compare isndie signal handler,store 1 for same, 2 for
 TODO: embed watchers need updating when fd changes
 TODO: document portbaility requirements for atomic pointer access
 TODO: possible cb aliasing?
+TODO: document requirements for function piinters and calling conventions.
 
 	- mark event pipe fd as cloexec after a fork (analyzed by Sami Farin).
         - (ecb) support m68k, m88k and sh (patch by Miod Vallat).
@@ -23,6 +24,8 @@ TODO: possible cb aliasing?
           doing clock_gettime in userspace).
         - ensure extern "C" function pointers are used for externally-visible
           loop callbacks (not watcher callbacks yet).
+        - (ecb) work around memory barriers and volatile apparently both being
+          broken in visual studio 2008 and later (analysed and patch by Nicolas Noble).
 
 4.15 Fri Mar  1 12:04:50 CET 2013
         - destroying a non-default loop would stop the global waitpid

ev.c

@@ -484,7 +484,7 @@ struct signalfd_siginfo
 /*
  * libecb - http://software.schmorp.de/pkg/libecb
  *
- * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
+ * Copyright (©) 2009-2013 Marc Alexander Lehmann <libecb@schmorp.de>
  * Copyright (©) 2011 Emanuele Giaquinta
  * All rights reserved.
  *
@@ -549,7 +549,7 @@ struct signalfd_siginfo
 #endif
 
 /* work around x32 idiocy by defining proper macros */
-#if __x86_64 || _M_AMD64
+#if __amd64 || __x86_64 || _M_AMD64 || _M_X64
   #if _ILP32
     #define ECB_AMD64_X32 1
   #else
@@ -619,7 +619,7 @@ struct signalfd_siginfo
     #elif defined __ARM_ARCH_7__  || defined __ARM_ARCH_7A__  \
        || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
       #define ECB_MEMORY_FENCE         __asm__ __volatile__ ("dmb"      : : : "memory")
-    #elif __sparc || __sparc__
+    #elif (__sparc || __sparc__) && !__sparcv8
       #define ECB_MEMORY_FENCE         __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
       #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad"                            : : : "memory")
       #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore             | #StoreStore")
@@ -662,6 +662,12 @@ struct signalfd_siginfo
 
   #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
     #define ECB_MEMORY_FENCE         __sync_synchronize ()
+  #elif _MSC_VER >= 1500 /* VC++ 2008 */
+    /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
+    #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
+    #define ECB_MEMORY_FENCE         _ReadWriteBarrier (); MemoryBarrier()
+    #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
+    #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
   #elif _MSC_VER >= 1400 /* VC++ 2005 */
     #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
     #define ECB_MEMORY_FENCE         _ReadWriteBarrier ()
@@ -1072,10 +1078,17 @@ ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () ==
 
   #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
 
-  #ifdef NEN
+  /* only the oldest of old doesn't have this one. solaris. */
+  #ifdef INFINITY
+    #define ECB_INFINITY INFINITY
+  #else
+    #define ECB_INFINITY HUGE_VAL
+  #endif
+
+  #ifdef NAN
     #define ECB_NAN NAN
   #else
-    #define ECB_NAN INFINITY
+    #define ECB_NAN ECB_INFINITY
   #endif
 
   /* converts an ieee half/binary16 to a float */
@@ -1090,7 +1103,7 @@ ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () ==
     if      (!e     ) r = ldexpf (m        ,    -24);
     else if (e != 31) r = ldexpf (m + 0x400, e - 25);
     else if (m      ) r = ECB_NAN;
-    else              r = INFINITY;
+    else              r = ECB_INFINITY;
 
     return x & 0x8000 ? -r : r;
   }