X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fexit%2Fexit.c;h=e4932b5b229a9708e23a6e409082562da58f11ab;hb=b6218764ebca59ff5dae0e87b696188c8de0119e;hp=ae557c090d1793220764dc413267a4e8e29c5e35;hpb=4750cf4202c29a895639b89099a7bdbe9ae422b6;p=musl diff --git a/src/exit/exit.c b/src/exit/exit.c index ae557c09..e4932b5b 100644 --- a/src/exit/exit.c +++ b/src/exit/exit.c @@ -2,29 +2,30 @@ #include #include #include "libc.h" +#include "atomic.h" +#include "syscall.h" static void dummy() { } -/* __towrite.c and atexit.c override these */ +/* __toread.c, __towrite.c, and atexit.c override these */ weak_alias(dummy, __funcs_on_exit); -weak_alias(dummy, __fflush_on_exit); +weak_alias(dummy, __flush_on_exit); +weak_alias(dummy, __seek_on_exit); -void exit(int code) +_Noreturn void exit(int code) { - static int lock[2]; + static int lock; /* If more than one thread calls exit, hang until _Exit ends it all */ - LOCK(lock); + while (a_swap(&lock, 1)) __syscall(SYS_pause); - /* Only do atexit & stdio flush if they were actually used */ __funcs_on_exit(); - __fflush_on_exit(); - - /* Destructor s**t is kept separate from atexit to avoid bloat */ if (libc.fini) libc.fini(); if (libc.ldso_fini) libc.ldso_fini(); + __flush_on_exit(); + __seek_on_exit(); _Exit(code); for(;;);