/* Obstack wrapper for GDB.
- Copyright (C) 2002, 2007, 2008, 2009, 2010, 2011
- Free Software Foundation, Inc.
+ Copyright (C) 2002-2018 Free Software Foundation, Inc.
This file is part of GDB.
/* Utility macros - wrap obstack alloc into something more robust. */
-#define OBSTACK_ZALLOC(OBSTACK,TYPE) (memset (obstack_alloc ((OBSTACK), sizeof (TYPE)), 0, sizeof (TYPE)))
+#define OBSTACK_ZALLOC(OBSTACK,TYPE) \
+ ((TYPE *) memset (obstack_alloc ((OBSTACK), sizeof (TYPE)), 0, sizeof (TYPE)))
-#define OBSTACK_CALLOC(OBSTACK,NUMBER,TYPE) (memset (obstack_alloc ((OBSTACK), (NUMBER) * sizeof (TYPE)), 0, (NUMBER) * sizeof (TYPE)))
+#define OBSTACK_CALLOC(OBSTACK,NUMBER,TYPE) \
+ ((TYPE *) memset (obstack_alloc ((OBSTACK), (NUMBER) * sizeof (TYPE)), \
+ 0, (NUMBER) * sizeof (TYPE)))
/* Unless explicitly specified, GDB obstacks always use xmalloc() and
xfree(). */
#define obstack_grow_wstr(OBSTACK, WSTRING) \
obstack_grow (OBSTACK, WSTRING, sizeof (gdb_wchar_t) * gdb_wcslen (WSTRING))
+/* Concatenate NULL terminated variable argument list of `const char
+ *' strings; return the new string. Space is found in the OBSTACKP.
+ Argument list must be terminated by a sentinel expression `(char *)
+ NULL'. */
+
+extern char *obconcat (struct obstack *obstackp, ...) ATTRIBUTE_SENTINEL;
+
+/* Duplicate STRING, returning an equivalent string that's allocated on the
+ obstack OBSTACKP. */
+
+extern char *obstack_strdup (struct obstack *obstackp, const char *string);
+
+/* An obstack that frees itself on scope exit. */
+struct auto_obstack : obstack
+{
+ auto_obstack ()
+ { obstack_init (this); }
+
+ ~auto_obstack ()
+ { obstack_free (this, NULL); }
+
+ /* Free all memory in the obstack but leave it valid for further
+ allocation. */
+ void clear ()
+ { obstack_free (this, obstack_base (this)); }
+};
+
+/* Objects are allocated on obstack instead of heap. */
+
+struct allocate_on_obstack
+{
+ allocate_on_obstack () = default;
+
+ void* operator new (size_t size, struct obstack *obstack)
+ {
+ return obstack_alloc (obstack, size);
+ }
+
+ void* operator new[] (size_t size, struct obstack *obstack)
+ {
+ return obstack_alloc (obstack, size);
+ }
+
+ void operator delete (void *memory) {}
+ void operator delete[] (void *memory) {}
+};
+
#endif