about summary refs log tree commit diff
path: root/REORG.TODO/stdlib/exit.c
diff options
context:
space:
mode:
Diffstat (limited to 'REORG.TODO/stdlib/exit.c')
-rw-r--r--REORG.TODO/stdlib/exit.c107
1 files changed, 107 insertions, 0 deletions
diff --git a/REORG.TODO/stdlib/exit.c b/REORG.TODO/stdlib/exit.c
new file mode 100644
index 0000000000..c0b6d666c7
--- /dev/null
+++ b/REORG.TODO/stdlib/exit.c
@@ -0,0 +1,107 @@
+/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sysdep.h>
+#include "exit.h"
+
+#include "set-hooks.h"
+DEFINE_HOOK (__libc_atexit, (void))
+
+
+/* Call all functions registered with `atexit' and `on_exit',
+   in the reverse of the order in which they were registered
+   perform stdio cleanup, and terminate program execution with STATUS.  */
+void
+attribute_hidden
+__run_exit_handlers (int status, struct exit_function_list **listp,
+		     bool run_list_atexit, bool run_dtors)
+{
+  /* First, call the TLS destructors.  */
+#ifndef SHARED
+  if (&__call_tls_dtors != NULL)
+#endif
+    if (run_dtors)
+      __call_tls_dtors ();
+
+  /* We do it this way to handle recursive calls to exit () made by
+     the functions registered with `atexit' and `on_exit'. We call
+     everyone on the list and use the status value in the last
+     exit (). */
+  while (*listp != NULL)
+    {
+      struct exit_function_list *cur = *listp;
+
+      while (cur->idx > 0)
+	{
+	  const struct exit_function *const f =
+	    &cur->fns[--cur->idx];
+	  switch (f->flavor)
+	    {
+	      void (*atfct) (void);
+	      void (*onfct) (int status, void *arg);
+	      void (*cxafct) (void *arg, int status);
+
+	    case ef_free:
+	    case ef_us:
+	      break;
+	    case ef_on:
+	      onfct = f->func.on.fn;
+#ifdef PTR_DEMANGLE
+	      PTR_DEMANGLE (onfct);
+#endif
+	      onfct (status, f->func.on.arg);
+	      break;
+	    case ef_at:
+	      atfct = f->func.at;
+#ifdef PTR_DEMANGLE
+	      PTR_DEMANGLE (atfct);
+#endif
+	      atfct ();
+	      break;
+	    case ef_cxa:
+	      cxafct = f->func.cxa.fn;
+#ifdef PTR_DEMANGLE
+	      PTR_DEMANGLE (cxafct);
+#endif
+	      cxafct (f->func.cxa.arg, status);
+	      break;
+	    }
+	}
+
+      *listp = cur->next;
+      if (*listp != NULL)
+	/* Don't free the last element in the chain, this is the statically
+	   allocate element.  */
+	free (cur);
+    }
+
+  if (run_list_atexit)
+    RUN_HOOK (__libc_atexit, ());
+
+  _exit (status);
+}
+
+
+void
+exit (int status)
+{
+  __run_exit_handlers (status, &__exit_funcs, true, true);
+}
+libc_hidden_def (exit)