Allocate aligned memory for block_sys_t

src/misc/block.c

@@ -86,13 +86,18 @@ block_t *block_Alloc( size_t i_size )
 {
     /* We do only one malloc
      * TODO: bench if doing 2 malloc but keeping a pool of buffer is better
-     * TODO: use memalign
      * 16 -> align on 16
      * 2 * BLOCK_PADDING_SIZE -> pre + post padding
      */
     const size_t i_alloc = i_size + 2 * BLOCK_PADDING_SIZE + BLOCK_ALIGN;
-    block_sys_t *p_sys = malloc( sizeof( *p_sys ) + i_alloc );
-
+    block_sys_t *p_sys;
+#ifdef HAVE_POSIX_MEMALIGN
+    p_sys = posix_memalign( &p_sys, BLOCK_ALIGN, sizeof( *p_sys ) + i_alloc ) ? NULL : p_sys;
+#elif HAVE_MEMALIGN
+    p_sys = memalign( BLOCK_ALIGIN, sizeof( *p_sys ) + i_alloc );
+#else
+    p_sys = malloc( sizeof( *p_sys ) + i_alloc );
+#endif
     if( p_sys == NULL )
         return NULL;