diff options
Diffstat (limited to 'sysdeps/nptl/fork.h')
-rw-r--r-- | sysdeps/nptl/fork.h | 31 |
1 files changed, 18 insertions, 13 deletions
diff --git a/sysdeps/nptl/fork.h b/sysdeps/nptl/fork.h index f0330cc667..6eab61c121 100644 --- a/sysdeps/nptl/fork.h +++ b/sysdeps/nptl/fork.h @@ -24,29 +24,37 @@ extern unsigned long int __fork_generation attribute_hidden; /* Pointer to the fork generation counter in the thread library. */ extern unsigned long int *__fork_generation_pointer attribute_hidden; -/* Lock to protect allocation and deallocation of fork handlers. */ -extern int __fork_lock attribute_hidden; - /* Elements of the fork handler lists. */ struct fork_handler { - struct fork_handler *next; void (*prepare_handler) (void); void (*parent_handler) (void); void (*child_handler) (void); void *dso_handle; - unsigned int refcntr; - int need_signal; }; -/* The single linked list of all currently registered for handlers. */ -extern struct fork_handler *__fork_handlers attribute_hidden; - - /* Function to call to unregister fork handlers. */ extern void __unregister_atfork (void *dso_handle) attribute_hidden; #define UNREGISTER_ATFORK(dso_handle) __unregister_atfork (dso_handle) +enum __run_fork_handler_type +{ + atfork_run_prepare, + atfork_run_child, + atfork_run_parent +}; + +/* Run the atfork handlers and lock/unlock the internal lock depending + of the WHO argument: + + - atfork_run_prepare: run all the PREPARE_HANDLER in reverse order of + insertion and locks the internal lock. + - atfork_run_child: run all the CHILD_HANDLER and unlocks the internal + lock. + - atfork_run_parent: run all the PARENT_HANDLER and unlocks the internal + lock. */ +extern void __run_fork_handlers (enum __run_fork_handler_type who) + attribute_hidden; /* C library side function to register new fork handlers. */ extern int __register_atfork (void (*__prepare) (void), @@ -54,6 +62,3 @@ extern int __register_atfork (void (*__prepare) (void), void (*__child) (void), void *dso_handle); libc_hidden_proto (__register_atfork) - -/* Add a new element to the fork list. */ -extern void __linkin_atfork (struct fork_handler *newp) attribute_hidden; |