libc-top-half/musl/src/locale/uselocale.c

   1 #include "locale_impl.h"
   2 #if defined(__wasilibc_unmodified_upstream) || defined(_REENTRANT)
   3 #include "pthread_impl.h"
   4 #endif
   5 #include "libc.h"
   6
   7 locale_t __uselocale(locale_t new)
   8 {
   9 #if defined(__wasilibc_unmodified_upstream) || defined(_REENTRANT)
  10         pthread_t self = __pthread_self();
  11         locale_t old = self->locale;
  12 #else
  13         locale_t old = &libc.global_locale;
  14 #endif
  15         locale_t global = &libc.global_locale;
  16
  17 #if defined(__wasilibc_unmodified_upstream) || defined(_REENTRANT)
  18         if (new) self->locale = new == LC_GLOBAL_LOCALE ? global : new;
  19 #else
  20         if (new != NULL && new != global && new != LC_GLOBAL_LOCALE) {
  21             fputs("non-global locale not supported yet", stderr);
  22             __builtin_trap();
  23         }
  24 #endif
  25
  26         return old == global ? LC_GLOBAL_LOCALE : old;
  27 }
  28
  29 weak_alias(__uselocale, uselocale);