Auto merge of #2249 - devnexen:malloc_zone_apple, r=Amanieu

darwin add few more debug malloc zone api

Author: bors

libc-test/semver/apple.txt

@@ -1684,6 +1684,13 @@ mach_thread_self
 mach_timebase_info
 mach_timebase_info_data_t
 madvise
+malloc_statistics_t
+malloc_zone_check
+malloc_zone_log
+malloc_zone_print
+malloc_zone_print_ptr_info
+malloc_zone_statistics
+malloc_zone_t
 max_align_t
 mcontext_t
 memset_pattern4
@@ -1695,6 +1702,7 @@ mkdirat
 mkstemps
 mount
 msghdr
+mstats
 newlocale
 nice
 nl_item

src/unix/bsd/apple/mod.rs

@@ -645,6 +645,10 @@ s! {
         pub chunks_free: ::size_t,
         pub bytes_free: ::size_t,
     }
+
+    pub struct malloc_zone_t {
+        __private: [::uintptr_t; 18], // FIXME: keeping private for now
+    }
 }
 
 s_no_extra_traits! {
@@ -4066,6 +4070,11 @@ extern "C" {
     pub fn memset_pattern16(b: *mut ::c_void, pattern16: *const ::c_void, len: ::size_t);
 
     pub fn mstats() -> mstats;
+    pub fn malloc_zone_check(zone: *mut ::malloc_zone_t) -> ::boolean_t;
+    pub fn malloc_zone_print(zone: *mut ::malloc_zone_t, verbose: ::boolean_t);
+    pub fn malloc_zone_statistics(zone: *mut ::malloc_zone_t, stats: *mut malloc_statistics_t);
+    pub fn malloc_zone_log(zone: *mut ::malloc_zone_t, address: *mut ::c_void);
+    pub fn malloc_zone_print_ptr_info(ptr: *mut ::c_void);
 
     pub fn proc_listpids(
         t: u32,