add minimal compatability layer for mimalloc v3

Author: daanx

include/mimalloc.h

@@ -362,6 +362,23 @@ mi_decl_export void mi_collect_reduce(size_t target_thread_owned) mi_attr_noexce
 #define mi_heap_recalloc_tp(hp,p,tp,n)  ((tp*)mi_heap_recalloc(hp,p,n,sizeof(tp)))
 
 
+// ------------------------------------------------------
+// Compatibility with v3
+// ------------------------------------------------------
+
+typedef mi_heap_t  mi_theap_t;
+
+#define mi_theap_get_default()            mi_heap_get_default()      
+#define mi_theap_set_default(hp)          mi_heap_set_default(hp)      
+#define mi_theap_collect(hp,force)        mi_heap_collect(hp,force)
+#define mi_theap_malloc(hp,sz)            mi_heap_malloc(hp,sz)
+#define mi_theap_zalloc(hp,sz)            mi_heap_zalloc(hp,sz)
+#define mi_theap_calloc(hp,cnt,sz)        mi_heap_malloc(hp,cnt,sz)
+#define mi_theap_malloc_small(hp,sz)      mi_heap_malloc_small(hp,sz)
+#define mi_theap_malloc_aligned(hp,sz,a)  mi_heap_malloc_aligned(hp,sz,a)
+#define mi_theap_realloc(hp,p,newsz)      mi_heap_realloc(hp,p,newsz)
+
+
 // ------------------------------------------------------
 // Options
 // ------------------------------------------------------