initialize mimalloc options at process load

include/mimalloc-internal.h

@@ -27,6 +27,7 @@ void       _mi_error_message(const char* fmt, ...);
 void       _mi_warning_message(const char* fmt, ...);
 void       _mi_verbose_message(const char* fmt, ...);
 void       _mi_trace_message(const char* fmt, ...);
+void       _mi_options_init(void);
 
 // "init.c"
 extern mi_stats_t       _mi_stats_main;

src/init.c

@@ -416,6 +416,7 @@ static void mi_allocator_done() {
 static void mi_process_load(void) {
   os_preloading = false;
   atexit(&mi_process_done);
+  _mi_options_init();
   mi_process_init();
   //mi_stats_reset();
   if (mi_redirected) _mi_verbose_message("malloc is redirected.\n");

src/options.c

@@ -73,6 +73,13 @@ static mi_option_desc_t options[_mi_option_last] =
 
 static void mi_option_init(mi_option_desc_t* desc);
 
+void _mi_options_init(void) {
+  // called on process load
+  for(int i = 0; i < _mi_option_last; i++ ) {
+    mi_option_get((mi_option_t)i); // initialize
+  }
+}
+
 long mi_option_get(mi_option_t option) {
   mi_assert(option >= 0 && option < _mi_option_last);
   mi_option_desc_t* desc = &options[option];