Make to_traceframe_info return a unique_ptr

Since this target method returns an allocated object, return a
unique_ptr.  It allows getting rid a some cleanups here and there.

I had to shuffle the includes around.  First, target.h now needs to
include tracepoint.h, to get the definition of traceframe_info_up.
However, the definition of enum trace_find_type was later in target, so
I had to move it to tracepoint.h, so that the declaration of tfind_1
could know about it.  I then had to remove the include of target.h from
tracepoint.h, which caused a circular dependency (it was probably
included to get enum trace_find_type in the first place anyway).

Regression tested on the buildbot.

gdb/ChangeLog:

	* target.h: Include tracepoint.h.
	(enum trace_find_type): Move to tracepoint.h.
	(struct target_ops) <to_traceframe_info>: Return a unique ptr.
	* tracepoint.h: Don't include target.h
	(enum trace_find_type): Move from target.h.
	(parse_traceframe_info): Return a unique ptr.
	* tracepoint.c (current_traceframe_info): Change type to unique
	ptr.
	(free_traceframe_info): Remove.
	(clear_traceframe_info): Don't manually free
	current_traceframe_info.
	(free_result): Remove.
	(parse_traceframe_info): Return a unique ptr.
	(get_traceframe_info): Adjust to unique ptr.
	* ctf.c (ctf_traceframe_info): Return a unique ptr.
	* remote.c (remote_traceframe_info): Return a unique ptr.
	* tracefile-tfile.c (tfile_traceframe_info): Return a unique
	ptr.
	* target-debug.h (target_debug_print_traceframe_info_up): New
	macro.
	* target-delegates.c: Regenerate.

1 files changed, 5 insertions, 5 deletions

diff --git a/gdb/target-delegates.c b/gdb/target-delegates.c
index c981796e7a..00efbb1498 100644
--- a/gdb/target-delegates.c
+++ b/gdb/target-delegates.c
@@ -3357,29 +3357,29 @@ debug_static_tracepoint_markers_by_strid (struct target_ops *self, const char *a
   return result;
 }
 
-static struct traceframe_info *
+static traceframe_info_up
 delegate_traceframe_info (struct target_ops *self)
 {
   self = self->beneath;
   return self->to_traceframe_info (self);
 }
 
-static struct traceframe_info *
+static traceframe_info_up
 tdefault_traceframe_info (struct target_ops *self)
 {
   tcomplain ();
 }
 
-static struct traceframe_info *
+static traceframe_info_up
 debug_traceframe_info (struct target_ops *self)
 {
-  struct traceframe_info * result;
+  traceframe_info_up result;
   fprintf_unfiltered (gdb_stdlog, "-> %s->to_traceframe_info (...)\n", debug_target.to_shortname);
   result = debug_target.to_traceframe_info (&debug_target);
   fprintf_unfiltered (gdb_stdlog, "<- %s->to_traceframe_info (", debug_target.to_shortname);
   target_debug_print_struct_target_ops_p (&debug_target);
   fputs_unfiltered (") = ", gdb_stdlog);
-  target_debug_print_struct_traceframe_info_p (result);
+  target_debug_print_traceframe_info_up (result);
   fputs_unfiltered ("\n", gdb_stdlog);
   return result;
 }