github.com/afumu/libc@v0.0.6/musl/src/stdio/__stdio_exit.c (about)

     1  #include "stdio_impl.h"
     2  
     3  static FILE *volatile dummy_file = 0;
     4  weak_alias(dummy_file, __stdin_used);
     5  weak_alias(dummy_file, __stdout_used);
     6  weak_alias(dummy_file, __stderr_used);
     7  
     8  static void close_file(FILE *f)
     9  {
    10  	if (!f) return;
    11  	FFINALLOCK(f);
    12  	if (f->wpos != f->wbase) f->write(f, 0, 0);
    13  	if (f->rpos != f->rend) f->seek(f, f->rpos-f->rend, SEEK_CUR);
    14  }
    15  
    16  void __stdio_exit(void)
    17  {
    18  	FILE *f;
    19  	for (f=*__ofl_lock(); f; f=f->next) close_file(f);
    20  	close_file(__stdin_used);
    21  	close_file(__stdout_used);
    22  	close_file(__stderr_used);
    23  }
    24  
    25  weak_alias(__stdio_exit, __stdio_exit_needed);