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atexit.0
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1996-09-02
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ATEXIT(3) UNIX Programmer's Manual ATEXIT(3)
NNAAMMEE
aatteexxiitt - register a function to be called on exit
SSYYNNOOPPSSIISS
##iinncclluuddee <<ssttddlliibb..hh>>
_i_n_t
aatteexxiitt(_v_o_i_d _(_*_f_u_n_c_t_i_o_n_)_(_v_o_i_d_))
DDEESSCCRRIIPPTTIIOONN
The aatteexxiitt() function registers the given _f_u_n_c_t_i_o_n to be called at pro-
gram exit, whether via exit(3) or via return from the program's _m_a_i_n.
Functions so registered are called in reverse order; no arguments are
passed. At least 32 functions can always be registered, and more are al-
lowed as long as sufficient memory can be allocated.
RREETTUURRNN VVAALLUUEESS
The aatteexxiitt() function returns the value 0 if successful; otherwise the
value -1 is returned and the global variable _e_r_r_n_o is set to indicate the
error.
EERRRROORRSS
[ENOMEM] No memory was available to add the function to the list.
The existing list of functions is unmodified.
SSEEEE AALLSSOO
exit(3)
SSTTAANNDDAARRDDSS
The aatteexxiitt() function conforms to ANSI C3.159-1989 (``ANSI C'').
BSD Experimental June 29, 1991 1