[PATCH v4 08/35] libctf: Add iteration over non-root types

[Nick Alcock <nick dot alcock at oracle dot com>]

The existing function ctf_type_iter lets you iterate over root-visible
types (types you can look up by name).  There is no way to iterate over
non-root-visible types, which is troublesome because both the linker
and dumper want to do that.

So add a new function that can do it: the callback it takes accepts
an extra parameter which indicates whether the type is root-visible
or not.

include/
	* ctf-api.h (ctf_type_all_f): New.
	(ctf_type_iter_all): New.

libctf/
	* ctf_types.c (ctf_type_iter_all): New.
---
 include/ctf-api.h  |  2 ++
 libctf/ctf-types.c | 21 +++++++++++++++++++++
 2 files changed, 23 insertions(+)

diff --git a/include/ctf-api.h b/include/ctf-api.h
index 28256a3c4e8..fa747888e04 100644
--- a/include/ctf-api.h
+++ b/include/ctf-api.h
@@ -211,6 +211,7 @@ typedef int ctf_member_f (const char *name, ctf_id_t membtype,
 typedef int ctf_enum_f (const char *name, int val, void *arg);
 typedef int ctf_variable_f (const char *name, ctf_id_t type, void *arg);
 typedef int ctf_type_f (ctf_id_t type, void *arg);
+typedef int ctf_type_all_f (ctf_id_t type, int flag, void *arg);
 typedef int ctf_label_f (const char *name, const ctf_lblinfo_t *info,
 			 void *arg);
 typedef int ctf_archive_member_f (ctf_file_t *fp, const char *name, void *arg);
@@ -317,6 +318,7 @@ extern int ctf_label_info (ctf_file_t *, const char *, ctf_lblinfo_t *);
 extern int ctf_member_iter (ctf_file_t *, ctf_id_t, ctf_member_f *, void *);
 extern int ctf_enum_iter (ctf_file_t *, ctf_id_t, ctf_enum_f *, void *);
 extern int ctf_type_iter (ctf_file_t *, ctf_type_f *, void *);
+extern int ctf_type_iter_all (ctf_file_t *, ctf_type_all_f *, void *);
 extern int ctf_label_iter (ctf_file_t *, ctf_label_f *, void *);
 extern int ctf_variable_iter (ctf_file_t *, ctf_variable_f *, void *);
 extern int ctf_archive_iter (const ctf_archive_t *, ctf_archive_member_f *,
diff --git a/libctf/ctf-types.c b/libctf/ctf-types.c
index 5068ff16a56..95c9c9aca18 100644
--- a/libctf/ctf-types.c
+++ b/libctf/ctf-types.c
@@ -144,6 +144,27 @@ ctf_type_iter (ctf_file_t *fp, ctf_type_f *func, void *arg)
   return 0;
 }
 
+/* Iterate over every type in the given CTF container, user-visible or not.
+   We pass the type ID of each type to the specified callback function.  */
+
+int
+ctf_type_iter_all (ctf_file_t *fp, ctf_type_all_f *func, void *arg)
+{
+  ctf_id_t id, max = fp->ctf_typemax;
+  int rc, child = (fp->ctf_flags & LCTF_CHILD);
+
+  for (id = 1; id <= max; id++)
+    {
+      const ctf_type_t *tp = LCTF_INDEX_TO_TYPEPTR (fp, id);
+      if ((rc = func (LCTF_INDEX_TO_TYPE (fp, id, child),
+		      LCTF_INFO_ISROOT(fp, tp->ctt_info)
+		      ? CTF_ADD_ROOT : CTF_ADD_NONROOT, arg) != 0))
+	return rc;
+    }
+
+  return 0;
+}
+
 /* Iterate over every variable in the given CTF container, in arbitrary order.
    We pass the name of each variable to the specified callback function.  */
 
-- 
2.23.0.239.g28aa4420fd