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Annotation of coherent/b/lib/libc/stdlib/atexit.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * libc/stdlib/atexit.c
                      3:  * C general utilities library.
                      4:  * atexit()
                      5:  * ANSI 4.10.4.2.
                      6:  * Register function for execution on exit.
                      7:  */
                      8: 
                      9: #include <stdlib.h>
                     10: 
                     11: #define        ATEXITN 32
                     12: 
                     13: /*
                     14:  * The Standard requires the implementation to support registration
                     15:  * of at least 32 functions.
                     16:  * This minimal implementation statically allocates a buffer for 32.
                     17:  * More could be stored in a malloc'ed buffer, but this code does not do so.
                     18:  * Globals _atexitn and _atexitfp are defined in exit.c.
                     19:  */
                     20: 
                     21: static void (*atexitfp[ATEXITN])();
                     22: 
                     23: int
                     24: atexit(func) void (*func)();
                     25: {
                     26:        if (_atexitn == 0)              /* first time */
                     27:                _atexitfp = &atexitfp[0];
                     28:        else if (_atexitn == _ATEXITN)
                     29:                return 1;               /* too many, failure */
                     30:        *_atexitfp++ = func;            /* store the function */
                     31:        ++_atexitn;                     /* and bump the count */
                     32:        return 0;                       /* success */
                     33: }
                     34: 
                     35: /* end of libc/stdlib/atexit.c */

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