mirror of
https://github.com/reactos/reactos.git
synced 2024-07-12 07:35:10 +00:00
99 lines
2.2 KiB
C
99 lines
2.2 KiB
C
/* taken from wine exit.c */
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#include <precomp.h>
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_onexit_t *atexit_table = NULL;
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int atexit_table_size = 0;
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int atexit_registered = 0; /* Points to free slot */
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/* INTERNAL: call atexit functions */
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void __call_atexit(void)
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{
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/* Note: should only be called with the exit lock held */
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TRACE("%d atext functions to call\n", atexit_registered);
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/* Last registered gets executed first */
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while (atexit_registered > 0)
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{
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atexit_registered--;
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TRACE("next is %p\n",atexit_table[atexit_registered]);
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if (atexit_table[atexit_registered])
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(*atexit_table[atexit_registered])();
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TRACE("returned\n");
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}
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}
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/*********************************************************************
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* __dllonexit (MSVCRT.@)
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*/
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_onexit_t CDECL __dllonexit(_onexit_t func, _onexit_t **start, _onexit_t **end)
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{
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_onexit_t *tmp;
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size_t len;
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TRACE("(%p,%p,%p)\n", func, start, end);
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if (!start || !*start || !end || !*end)
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{
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FIXME("bad table\n");
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return NULL;
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}
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len = (*end - *start);
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TRACE("table start %p-%p, %d entries\n", *start, *end, len);
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if (++len <= 0)
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return NULL;
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tmp = realloc(*start, len * sizeof(_onexit_t));
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if (!tmp)
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return NULL;
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*start = tmp;
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*end = tmp + len;
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tmp[len - 1] = func;
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TRACE("new table start %p-%p, %d entries\n", *start, *end, len);
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return func;
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}
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/*********************************************************************
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* _onexit (MSVCRT.@)
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*/
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_onexit_t CDECL _onexit(_onexit_t func)
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{
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TRACE("(%p)\n",func);
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if (!func)
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return NULL;
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LOCK_EXIT;
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if (atexit_registered > atexit_table_size - 1)
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{
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_onexit_t *newtable;
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TRACE("expanding table\n");
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newtable = calloc(atexit_table_size + 32, sizeof(void *));
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if (!newtable)
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{
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TRACE("failed!\n");
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UNLOCK_EXIT;
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return NULL;
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}
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memcpy (newtable, atexit_table, atexit_table_size);
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atexit_table_size += 32;
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free (atexit_table);
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atexit_table = newtable;
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}
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atexit_table[atexit_registered] = func;
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atexit_registered++;
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UNLOCK_EXIT;
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return func;
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}
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/*********************************************************************
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* atexit (MSVCRT.@)
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*/
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int CDECL atexit(void (*func)(void))
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{
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TRACE("(%p)\n", func);
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return _onexit((_onexit_t)func) == (_onexit_t)func ? 0 : -1;
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}
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