Added exit, _Exit, atexit.

[pdclib] / functions / stdlib / atexit.c

diff --git a/functions/stdlib/atexit.c b/functions/stdlib/atexit.c
new file mode 100644 (file)
index 0000000..573e4ba
--- /dev/null
+++ b/functions/stdlib/atexit.c
@@ -0,0 +1,53 @@
+/* $Id$ */
+
+/* Release $Name$ */
+
+/* atexit( void (*)( void ) )
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+#include <stdlib.h>
+
+#ifndef REGTEST
+
+/* TODO: Required by both atexit() and exit(). */
+struct _PDCLIB_exitfunc_t
+{
+    struct _PDCLIB_exitfunc_t * next;
+    void (*func)( void );
+};
+
+extern struct _PDCLIB_exitfunc_t * regstack;
+
+int atexit( void (*func)( void ) )
+{
+    struct _PDCLIB_exitfunc_t * regfunc = (struct _PDCLIB_exitfunc_t *)malloc( sizeof( struct _PDCLIB_exitfunc_t ) );
+    if ( regfunc == NULL )
+    {
+        return -1;
+    }
+    else
+    {
+        regfunc->func = func;
+       regfunc->next = regstack;
+       regstack = regfunc;
+       return 0;
+    }
+}
+
+#endif
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+
+int main()
+{
+    int NO_TESTDRIVER = 0;
+    BEGIN_TESTS;
+    TESTCASE( NO_TESTDRIVER );
+    return TEST_RESULTS;
+}
+
+#endif