macros: add nm_auto_free macro

Similar to gs_free to cleanup pointers with free(). Note that
g_free() and free() cannot be used interchangably.

diff --git a/shared/nm-default.h b/shared/nm-default.h
index f1fcb84..72b74a5 100644 (file)
--- a/shared/nm-default.h
+++ b/shared/nm-default.h
@@ -41,6 +41,8 @@
 
 /* always include these headers for our internal source files. */
 
+#include <stdlib.h>
+
 #include "nm-glib.h"
 #include "nm-version.h"
 #include "gsystem-local-alloc.h"

diff --git a/shared/nm-macros-internal.h b/shared/nm-macros-internal.h
index 63f5138..4d80274 100644 (file)
--- a/shared/nm-macros-internal.h
+++ b/shared/nm-macros-internal.h
@@ -22,7 +22,15 @@
 #ifndef __NM_MACROS_INTERNAL_H__
 #define __NM_MACROS_INTERNAL_H__
 
-#include "nm-default.h"
+/********************************************************/
+
+/**
+ * nm_auto_free:
+ *
+ * Call free() on a variable location when it goes out of scope.
+ */
+#define nm_auto_free __attribute__ ((cleanup(_nm_auto_free_impl)))
+GS_DEFINE_CLEANUP_FUNCTION(void*, _nm_auto_free_impl, free)
 
 /********************************************************/