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_execute_onexit_table, _initialize_onexit_table, _register_onexit_function

Manages the routines to be called at exit time.


int _initialize_onexit_table(
    _onexit_table_t* table

int _register_onexit_function(
    _onexit_table_t* table,
    _onexit_t        function

int _execute_onexit_table(
    _onexit_table_t* table


[in, out] Pointer to the onexit function table.

[in] Pointer to a function to add to the onexit function table.

Return value

If successful, the function returns 0. Otherwise, it returns a negative value.


These functions are infrastructure implementation details used to support the C runtime, and shouldn't be called directly from your code. The C runtime uses an onexit function table to represent the sequence of functions registered by calls to atexit, at_quick_exit, and _onexit. The onexit function table data structure is an opaque implementation detail of the C runtime; the order and meaning of its data members may change. They shouldn't be inspected by external code.

The _initialize_onexit_table function initializes the onexit function table to its initial value. This function must be called before the onexit function table is passed to either _register_onexit_function or _execute_onexit_table.

The _register_onexit_function function appends a function to the end of the onexit function table.

The _execute_onexit_table function executes all of the functions in the onexit function table, clears the table, and then returns. After a call to _execute_onexit_table, the table is in a non-valid state; it must be reinitialized by a call to _initialize_onexit_table before it's used again.

By default, this function's global state is scoped to the application. To change this behavior, see Global state in the CRT.


Routine Required header
_initialize_onexit_table, _register_onexit_function, _execute_onexit_table C, C++: <process.h>

The _initialize_onexit_table, _register_onexit_function, and _execute_onexit_table functions are Microsoft-specific. For compatibility information, see Compatibility.

See also

exit, _Exit, _exit
_onexit, _onexit_m