--- contrib/libs/c-ares/src/lib/ares_library_init.c	(index)
+++ contrib/libs/c-ares/src/lib/ares_library_init.c	(working tree)
@@ -51,1 +54,1 @@ void *(*ares_malloc)(size_t size) = default_malloc;
-int ares_library_init(int flags)
+int ares_library_init_unsafe(int flags)
@@ -82,1 +93,1 @@ int ares_library_init_mem(int flags,
-void ares_library_cleanup(void)
+void ares_library_cleanup_unsafe(void)
@@ -110,1 +115,1 @@ void ares_library_cleanup(void)
-int ares_library_initialized(void)
+int ares_library_initialized_unsafe(void)
@@ -140,3 +140,28 @@ int ares_library_initialized(void)
 #endif
   return ARES_SUCCESS;
 }
+#include "atomic.h"
+static atomic_t     ares_init_lock;
+int ares_library_init(int flags)
+{
+  acquire_lock(&ares_init_lock);
+  int res = ares_library_init_unsafe(flags);
+  release_lock(&ares_init_lock);
+  return res;
+}
+
+void ares_library_cleanup(void)
+{
+  acquire_lock(&ares_init_lock);
+  ares_library_cleanup_unsafe();
+  release_lock(&ares_init_lock);
+}
+
+
+int ares_library_initialized(void)
+{
+  acquire_lock(&ares_init_lock);
+  int res = ares_library_initialized_unsafe();
+  release_lock(&ares_init_lock);
+  return res;
+}