packages/net/rtorrent/patches/110-fix-no-posix_memalign.diff

--- a/rak/allocators.h
+++ b/rak/allocators.h
@@ -42,6 +42,7 @@
 #include <cstddef>
 #include <limits>
 #include <stdlib.h>
+#include <stdint.h>
 #include <sys/types.h>
 
 namespace rak {
@@ -74,17 +75,13 @@ public:
   size_type max_size () const throw() { return std::numeric_limits<size_t>::max() / sizeof(T); }
 
   pointer allocate(size_type num, const_void_pointer hint = 0) { return alloc_size(num*sizeof(T)); }
+  void deallocate (pointer p, size_type num) { dealloc_size(p, num*sizeof(T)); }
 
-  static pointer alloc_size(size_type size) {
-    pointer ptr = NULL;
-    int __UNUSED result = posix_memalign((void**)&ptr, LT_SMP_CACHE_BYTES, size);
-
-    return ptr;
-  }
+  static pointer alloc_size(size_type size);
+  static void dealloc_size(pointer p, size_type size);
 
   void construct (pointer p, const T& value) { new((void*)p)T(value); }
   void destroy (pointer p) { p->~T(); }
-  void deallocate (pointer p, size_type num) { ::operator delete((void*)p); }
 };
 
 
@@ -98,6 +95,36 @@ bool operator!= (const cacheline_allocat
   return false;
 }
 
+template <class T>
+inline typename cacheline_allocator<T>::pointer cacheline_allocator<T>::alloc_size(size_type size) {
+  pointer ptr;
+
+#if HAVE_POSIX_MEMALIGN
+  if (posix_memalign((void**)&ptr, LT_SMP_CACHE_BYTES, size))
+    return NULL;
+#else
+  char* org = (char*)malloc(size + sizeof(void*) + LT_SMP_CACHE_BYTES - 1);
+  if (org == NULL)
+    return NULL;
+
+  ptr = (pointer)((uintptr_t)(org + LT_SMP_CACHE_BYTES - 1) & ~(LT_SMP_CACHE_BYTES - 1));
+
+  // store originally allocated pointer for later free() at the end of the allocated data
+  *(void**)((char*)ptr + size) = org;
+#endif
+
+  return ptr;
+}
+
+template <class T>
+inline void cacheline_allocator<T>::dealloc_size(pointer p, size_type size) {
+#if HAVE_POSIX_MEMALIGN
+  free(p);
+#else
+  free(*(void**)((char*)p + size));
+#endif
+}
+
 }
 
 //