From: Dmitry V. Levin <ldv@altlinux.org>
Date: Thu, 16 Mar 2017 13:46:36 +0000 (+0000)
Subject: tests: add TAIL_ALLOC_OBJECT_{CONST,VAR}_PTR to tests.h
X-Git-Tag: v4.17~161
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=72b7cfb3bf534c69cfa980fd6f4336e5a14d752b;p=strace

tests: add TAIL_ALLOC_OBJECT_{CONST,VAR}_PTR to tests.h

Introduce a new macros for the most widespread use of tail_alloc.

* tests/tests.h (TAIL_ALLOC_OBJECT_CONST_PTR,
TAIL_ALLOC_OBJECT_VAR_PTR): New macros.
---

diff --git a/tests/tests.h b/tests/tests.h
index 7a398c18..d077c5c8 100644
--- a/tests/tests.h
+++ b/tests/tests.h
@@ -71,6 +71,22 @@ void *tail_alloc(const size_t)
 void *tail_memdup(const void *, const size_t)
 	ATTRIBUTE_MALLOC ATTRIBUTE_ALLOC_SIZE((2));
 
+/*
+ * Allocate an object of the specified type at the end
+ * of a mapped memory region.
+ * Assign its address to the specified constant pointer.
+ */
+#define TAIL_ALLOC_OBJECT_CONST_PTR(type_name, type_ptr)	\
+	type_name *const type_ptr = tail_alloc(sizeof(*type_ptr))
+
+/*
+ * Allocate an object of the specified type at the end
+ * of a mapped memory region.
+ * Assign its address to the specified variable pointer.
+ */
+#define TAIL_ALLOC_OBJECT_VAR_PTR(type_name, type_ptr)		\
+	type_name *type_ptr = tail_alloc(sizeof(*type_ptr))
+
 /*
  * Fill memory (pointed by ptr, having size bytes) with different bytes (with
  * values starting with start and resetting every period) in order to catch