Split libc/stdlib/on_exit.cpp into multiple files.

libc/Makefile

@@ -328,6 +328,7 @@ stdio/tmpnam.o \
 stdio/vfprintf.o \
 stdio/vprintf.o \
 stdio/vscanf.o \
+stdlib/atexit.o \
 stdlib/canonicalize_file_name_at.o \
 stdlib/canonicalize_file_name.o \
 stdlib/env.o \

libc/include/stdlib.h

@@ -128,6 +128,16 @@ char* getenv(const char*);
 int clearenv(void);
 #endif
 
+#if __is_sortix_libc
+struct exit_handler
+{
+	void (*hook)(int, void*);
+	void* param;
+	struct exit_handler* next;
+};
+extern struct exit_handler* __exit_handler_stack;
+#endif
+
 /* TODO: These are not implemented in sortix libc yet. */
 #if 0
 long a64l(const char* s);

libc/stdlib/atexit.cpp

@@ -0,0 +1,35 @@
+/*******************************************************************************
+
+    Copyright(C) Jonas 'Sortie' Termansen 2012, 2013.
+
+    This file is part of the Sortix C Library.
+
+    The Sortix 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 3 of the License, or (at your
+    option) any later version.
+
+    The Sortix 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 Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
+
+    stdlib/atexit.cpp
+    Hooks that are called upon process exit.
+
+*******************************************************************************/
+
+#include <stdlib.h>
+
+static void atexit_adapter(int /*status*/, void* user)
+{
+	((void (*)(void)) user)();
+}
+
+extern "C" int atexit(void (*hook)(void))
+{
+	return on_exit(atexit_adapter, (void*) hook);
+}

libc/stdlib/exit.cpp

@@ -26,11 +26,15 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-extern "C" void call_exit_handlers(int status);
+extern "C" { struct exit_handler* __exit_handler_stack = NULL; }
 
 extern "C" void exit(int status)
 {
-	call_exit_handlers(status);
+	while ( __exit_handler_stack )
+	{
+		__exit_handler_stack->hook(status, __exit_handler_stack->param);
+		__exit_handler_stack = __exit_handler_stack->next;
+	}
 	dcloseall();
 	fcloseall();
 	_Exit(status);

libc/stdlib/on_exit.cpp

@@ -1,6 +1,6 @@
 /*******************************************************************************
 
-    Copyright(C) Jonas 'Sortie' Termansen 2012.
+    Copyright(C) Jonas 'Sortie' Termansen 2012, 2013.
 
     This file is part of the Sortix C Library.
 
@@ -18,45 +18,21 @@
     along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
 
     stdlib/on_exit.cpp
-    Hooks that is called upon process exit.
+    Hooks that are called upon process exit.
 
 *******************************************************************************/
 
 #include <stdlib.h>
 
-struct exithandler
-{
-	void (*hook)(int, void*);
-	void* param;
-	struct exithandler* next;
-}* exit_handler_stack = NULL;
-
 extern "C" int on_exit(void (*hook)(int, void*), void* param)
 {
-	struct exithandler* handler = (struct exithandler*) malloc(sizeof(struct exithandler));
-	if ( !handler ) { return -1; }
+	struct exit_handler* handler =
+		(struct exit_handler*) malloc(sizeof(struct exit_handler));
+	if ( !handler )
+		return -1;
 	handler->hook = hook;
 	handler->param = param;
-	handler->next = exit_handler_stack;
-	exit_handler_stack = handler;
+	handler->next = __exit_handler_stack;
+	__exit_handler_stack = handler;
 	return 0;
 }
-
-static void atexit_adapter(int /*status*/, void* user)
-{
-	((void (*)(void)) user)();
-}
-
-extern "C" int atexit(void (*hook)(void))
-{
-	return on_exit(atexit_adapter, (void*) hook);
-}
-
-extern "C" void call_exit_handlers(int status)
-{
-	while ( exit_handler_stack )
-	{
-		exit_handler_stack->hook(status, exit_handler_stack->param);
-		exit_handler_stack = exit_handler_stack->next;
-	}
-}