Star wildcard ranges (e.g., "info thread 2.*")

Add support for specifying "all threads of inferior N", by writing "*"
as thread number/range in thread ID lists.

E.g., "info threads 2.*" or "thread apply 2.* bt".

gdb/ChangeLog:
2016-01-15  Pedro Alves  <palves@redhat.com>

	* NEWS: Mention star wildcard ranges.
	* cli/cli-utils.c (get_number_or_range): Check state->in_range first.
	(number_range_setup_range): New function.
	* cli/cli-utils.h (number_range_setup_range): New declaration.
	* thread.c (thread_apply_command): Support star TID ranges.
	* tid-parse.c (tid_range_parser_finished)
	(tid_range_parser_string, tid_range_parser_skip)
	(get_tid_or_range, get_tid_or_range): Handle
	TID_RANGE_STATE_STAR_RANGE.
	(tid_range_parser_star_range): New function.
	* tid-parse.h (enum tid_range_state) <TID_RANGE_STATE_STAR_RANGE>:
	New value.
	(tid_range_parser_star_range): New declaration.

gdb/doc/ChangeLog:
2016-01-15  Pedro Alves  <palves@redhat.com>

	* gdb.texinfo (Threads) <thread ID lists>: Document star ranges.

gdb/testsuite/ChangeLog:
2016-01-15  Pedro Alves  <palves@redhat.com>

	* gdb.multi/tids.exp: Test star wildcard ranges.

1 files changed, 25 insertions, 3 deletions

diff --git a/gdb/tid-parse.c b/gdb/tid-parse.c
index 45b7ff5..68133c6 100644
--- a/gdb/tid-parse.c
+++ b/gdb/tid-parse.c
@@ -134,6 +134,7 @@ tid_range_parser_finished (struct tid_range_parser *parser)
     case TID_RANGE_STATE_INFERIOR:
       return *parser->string == '\0';
     case TID_RANGE_STATE_THREAD_RANGE:
+    case TID_RANGE_STATE_STAR_RANGE:
       return parser->range_parser.finished;
     }
 
@@ -150,6 +151,7 @@ tid_range_parser_string (struct tid_range_parser *parser)
     case TID_RANGE_STATE_INFERIOR:
       return parser->string;
     case TID_RANGE_STATE_THREAD_RANGE:
+    case TID_RANGE_STATE_STAR_RANGE:
       return parser->range_parser.string;
     }
 
@@ -161,7 +163,8 @@ tid_range_parser_string (struct tid_range_parser *parser)
 void
 tid_range_parser_skip (struct tid_range_parser *parser)
 {
-  gdb_assert ((parser->state == TID_RANGE_STATE_THREAD_RANGE)
+  gdb_assert ((parser->state == TID_RANGE_STATE_THREAD_RANGE
+	       || parser->state == TID_RANGE_STATE_STAR_RANGE)
 	      && parser->range_parser.in_range);
 
   tid_range_parser_init (parser, parser->range_parser.end_ptr,
@@ -219,7 +222,16 @@ get_tid_or_range (struct tid_range_parser *parser, int *inf_num,
 	}
 
       init_number_or_range (&parser->range_parser, p);
-      parser->state = TID_RANGE_STATE_THREAD_RANGE;
+      if (p[0] == '*' && (p[1] == '\0' || isspace (p[1])))
+	{
+	  /* Setup the number range parser to return numbers in the
+	     whole [1,INT_MAX] range.  */
+	  number_range_setup_range (&parser->range_parser, 1, INT_MAX,
+				    skip_spaces_const (p + 1));
+	  parser->state = TID_RANGE_STATE_STAR_RANGE;
+	}
+      else
+	parser->state = TID_RANGE_STATE_THREAD_RANGE;
     }
 
   *inf_num = parser->inf_num;
@@ -247,7 +259,9 @@ get_tid_or_range (struct tid_range_parser *parser, int *inf_num,
 
   /* If we're midway through a range, and the caller wants the end
      value, return it and skip to the end of the range.  */
-  if (thr_end != NULL && parser->state == TID_RANGE_STATE_THREAD_RANGE)
+  if (thr_end != NULL
+      && (parser->state == TID_RANGE_STATE_THREAD_RANGE
+	  || parser->state == TID_RANGE_STATE_STAR_RANGE))
     {
       *thr_end = parser->range_parser.end_value;
       tid_range_parser_skip (parser);
@@ -281,6 +295,14 @@ tid_range_parser_get_tid (struct tid_range_parser *parser,
 /* See tid-parse.h.  */
 
 int
+tid_range_parser_star_range (struct tid_range_parser *parser)
+{
+  return parser->state == TID_RANGE_STATE_STAR_RANGE;
+}
+
+/* See gdbthread.h.  */
+
+int
 tid_is_in_list (const char *list, int default_inferior,
 		int inf_num, int thr_num)
 {