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| author | Paul Pluzhnikov <ppluzhnikov@google.com> | 2017-09-20 09:31:48 -0700 |
|---|---|---|
| committer | Paul Pluzhnikov <ppluzhnikov@google.com> | 2017-09-20 09:31:48 -0700 |
| commit | 26e70aec7028feeb196744eb97cd2dff3670b7aa (patch) | |
| tree | 0eb04d182ca05b4161b1cc0f6c59265da6ccb621 /stdlib/exit.h | |
| parent | 0525ce4850f2c22a235dcd3422bc92f40815f377 (diff) | |
| download | glibc-26e70aec7028feeb196744eb97cd2dff3670b7aa.tar.gz glibc-26e70aec7028feeb196744eb97cd2dff3670b7aa.tar.xz glibc-26e70aec7028feeb196744eb97cd2dff3670b7aa.zip | |
Fix BZ 14333
Diffstat (limited to 'stdlib/exit.h')
| -rw-r--r-- | stdlib/exit.h | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/stdlib/exit.h b/stdlib/exit.h index 7f2e679246..dbf9f2d01f 100644 --- a/stdlib/exit.h +++ b/stdlib/exit.h @@ -20,6 +20,7 @@ #include <stdbool.h> #include <stdint.h> +#include <libc-lock.h> enum { @@ -57,11 +58,27 @@ struct exit_function_list size_t idx; struct exit_function fns[32]; }; + extern struct exit_function_list *__exit_funcs attribute_hidden; extern struct exit_function_list *__quick_exit_funcs attribute_hidden; +extern uint64_t __new_exitfn_called attribute_hidden; + +/* True once all registered atexit/at_quick_exit/onexit handlers have been + called */ +extern bool __exit_funcs_done attribute_hidden; + +/* This lock protects __exit_funcs, __quick_exit_funcs, __exit_funcs_done + and __new_exitfn_called globals against simultaneous access from + atexit/on_exit/at_quick_exit in multiple threads, and also from + simultaneous access while another thread is in the middle of calling + exit handlers. See BZ#14333. Note: for lists, the entire list, and + each associated entry in the list, is protected for all access by this + lock. */ +__libc_lock_define (extern, __exit_funcs_lock); + extern struct exit_function *__new_exitfn (struct exit_function_list **listp); -extern uint64_t __new_exitfn_called attribute_hidden; + extern void __run_exit_handlers (int status, struct exit_function_list **listp, |