libiberty.h (XNEW, [...]): Move here from libcpp/internal.h.

	* libiberty.h (XNEW, XCNEW, XNEWVEC, XCNEWVEC, XOBNEW): Move here from
	libcpp/internal.h.
	(XDELETE, XRESIZEVEC, XDELETEVEC, XNEWVAR, XCNEWVAR, XRESIZEVAR): New
	macros.

From-SVN: r85119

diff --git a/include/libiberty.h b/include/libiberty.h
index 5c1015385806f385dbba28176046eec8c1c07261..68eeeae739699c75ab87d61a95b330c0a01d449c 100644 (file)
--- a/include/libiberty.h
+++ b/include/libiberty.h
@@ -250,6 +250,37 @@ extern PTR xmemdup PARAMS ((const PTR, size_t, size_t)) ATTRIBUTE_MALLOC;
 extern double physmem_total PARAMS ((void));
 extern double physmem_available PARAMS ((void));
 
+
+/* These macros provide a K&R/C89/C++-friendly way of allocating structures
+   with nice encapsulation.  The XDELETE*() macros are technically
+   superfluous, but provided here for symmetry.  Using them consistently
+   makes it easier to update client code to use different allocators such
+   as new/delete and new[]/delete[].  */
+
+/* Scalar allocators.  */
+
+#define XNEW(T)                        ((T *) xmalloc (sizeof (T)))
+#define XCNEW(T)               ((T *) xcalloc (1, sizeof (T)))
+#define XDELETE(P)             free ((P))
+
+/* Array allocators.  */
+
+#define XNEWVEC(T, N)          ((T *) xmalloc (sizeof (T) * (N)))
+#define XCNEWVEC(T, N)         ((T *) xcalloc ((N), sizeof (T)))
+#define XRESIZEVEC(T, P, N)    ((T *) xrealloc ((P), sizeof (T) * (N)))
+#define XDELETEVEC(P)          free ((P))
+
+/* Allocators for variable-sized structures and raw buffers.  */
+
+#define XNEWVAR(T, S)          ((T *) xmalloc ((S)))
+#define XCNEWVAR(T, S)         ((T *) xcalloc (1, (S)))
+#define XRESIZEVAR(T, P, S)    ((T *) xrealloc ((P), (S)))
+
+/* Type-safe obstack allocator.  */
+
+#define XOBNEW(O, T)           ((T *) obstack_alloc ((O), sizeof (T)))
+
+
 /* hex character manipulation routines */
 
 #define _hex_array_size 256