From b6f479d4413511fbd742e7c8464cec67501f539c Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Tue, 3 Mar 2009 18:01:01 +0100
Subject: talloc: add talloc_get_type_abort()

metze
---
 lib/talloc/talloc.c | 24 ++++++++++++++++++++++++
 lib/talloc/talloc.h |  2 ++
 2 files changed, 26 insertions(+)

(limited to 'lib')

diff --git a/lib/talloc/talloc.c b/lib/talloc/talloc.c
index 1f7e52439f..c472e9fda9 100644
--- a/lib/talloc/talloc.c
+++ b/lib/talloc/talloc.c
@@ -806,6 +806,30 @@ void *talloc_check_name(const void *ptr, const char *name)
 	return NULL;
 }
 
+static void talloc_abort_type_missmatch(const char *location,
+					const char *name,
+					const char *expected)
+{
+	TALLOC_ABORT("Type missmatch");
+}
+
+void *_talloc_get_type_abort(const void *ptr, const char *name, const char *location)
+{
+	const char *pname;
+
+	if (unlikely(ptr == NULL)) {
+		talloc_abort_type_missmatch(location, NULL, name);
+		return NULL;
+	}
+
+	pname = talloc_get_name(ptr);
+	if (likely(pname == name || strcmp(pname, name) == 0)) {
+		return discard_const_p(void, ptr);
+	}
+
+	talloc_abort_type_missmatch(location, pname, name);
+	return NULL;
+}
 
 /*
   this is for compatibility with older versions of talloc
diff --git a/lib/talloc/talloc.h b/lib/talloc/talloc.h
index 5431971655..002e06e52d 100644
--- a/lib/talloc/talloc.h
+++ b/lib/talloc/talloc.h
@@ -102,6 +102,7 @@ typedef void TALLOC_CTX;
 
 #define talloc_set_type(ptr, type) talloc_set_name_const(ptr, #type)
 #define talloc_get_type(ptr, type) (type *)talloc_check_name(ptr, #type)
+#define talloc_get_type_abort(ptr, type) (type *)_talloc_get_type_abort(ptr, #type, __location__)
 
 #define talloc_find_parent_bytype(ptr, type) (type *)talloc_find_parent_byname(ptr, #type)
 
@@ -129,6 +130,7 @@ void *talloc_named(const void *context, size_t size,
 void *talloc_named_const(const void *context, size_t size, const char *name);
 const char *talloc_get_name(const void *ptr);
 void *talloc_check_name(const void *ptr, const char *name);
+void *_talloc_get_type_abort(const void *ptr, const char *name, const char *location);
 void *talloc_parent(const void *ptr);
 const char *talloc_parent_name(const void *ptr);
 void *talloc_init(const char *fmt, ...) PRINTF_ATTRIBUTE(1,2);
-- 
cgit