add prim/osx directory

src/prim/osx/prim.c

@@ -0,0 +1,9 @@
+/* ----------------------------------------------------------------------------
+Copyright (c) 2018-2023, Microsoft Research, Daan Leijen
+This is free software; you can redistribute it and/or modify it under the
+terms of the MIT license. A copy of the license can be found in the file
+"LICENSE" at the root of this distribution.
+-----------------------------------------------------------------------------*/
+
+// We use the unix/prim.c with the mmap API on macOSX
+#include "../unix/prim.c"

src/prim/prim.c

@@ -10,9 +10,15 @@ terms of the MIT license. A copy of the license can be found in the file
 
 #if defined(_WIN32)
 #include "windows/prim.c"  // VirtualAlloc (Windows)
+
+#elif defined(__APPLE__)
+#include "osx/prim.c"      // macOSX (actually defers to mmap in unix/prim.c)
+
 #elif defined(__wasi__)
 #define MI_USE_SBRK
 #include "wasi/prim.c"     // memory-grow or sbrk (Wasm)
+
 #else
 #include "unix/prim.c"     // mmap() (Linux, macOSX, BSD, Illumnos, Haiku, DragonFly, etc.)
+
 #endif

src/static.c

@@ -20,11 +20,8 @@ terms of the MIT license. A copy of the license can be found in the file
 // containing the whole library. If it is linked first
 // it will override all the standard library allocation
 // functions (on Unix's).
-#include "alloc.c"
+#include "alloc.c"          // includes alloc-override.c
 #include "alloc-aligned.c"
-#if MI_OSX_ZONE
-#include "alloc-override-osx.c"
-#endif
 #include "alloc-posix.c"
 #include "arena.c"
 #include "bitmap.c"
@@ -32,9 +29,12 @@ terms of the MIT license. A copy of the license can be found in the file
 #include "init.c"
 #include "options.c"
 #include "os.c"
-#include "page.c"
-#include "prim/prim.c"
-#include "random.c"
+#include "page.c"           // includes page-queue.c
+#include "random.c" 
 #include "region.c"
 #include "segment.c"
 #include "stats.c"
+#include "prim/prim.c"
+#if MI_OSX_ZONE
+#include "prim/osx/alloc-override-zone.c"
+#endif