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authorDJ Delorie <dj@redhat.com>2004-07-24 18:04:39 +0000
committerDJ Delorie <dj@redhat.com>2004-07-24 18:04:39 +0000
commitd5b4094f381410813c8eaceae0d71f9c11394bf4 (patch)
treea04cf7c56d4f10dc36881f638f94a35c6999d5e3 /include/libiberty.h
parentb4632131601c0c375c1c571b5671fca4176979ae (diff)
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merge from gcc
Diffstat (limited to 'include/libiberty.h')
-rw-r--r--include/libiberty.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/include/libiberty.h b/include/libiberty.h
index 5c10153..68eeeae 100644
--- 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