gas thunderx support

[deliverable/binutils-gdb.git] / gdb / thread.c

diff --git a/gdb/thread.c b/gdb/thread.c
index 782fc702f479378767416c101f22fba9f9097d96..23dfcc915c516fa46a06bdba73a679138621e830 100644 (file)
--- a/gdb/thread.c
+++ b/gdb/thread.c
@@ -1,6 +1,6 @@
 /* Multi-process/thread control for GDB, the GNU debugger.
 
-   Copyright (C) 1986-2014 Free Software Foundation, Inc.
+   Copyright (C) 1986-2015 Free Software Foundation, Inc.
 
    Contributed by Lynx Real-Time Systems, Inc.  Los Gatos, CA.
 
@@ -62,7 +62,6 @@ static int highest_thread_num;
    spawned new threads we haven't heard of yet.  */
 static int threads_executing;
 
-static void thread_command (char *tidstr, int from_tty);
 static void thread_apply_all_command (char *, int);
 static int thread_alive (struct thread_info *);
 static void info_threads_command (char *, int);
@@ -183,12 +182,12 @@ clear_thread_inferior_resources (struct thread_info *tp)
 static void
 free_thread (struct thread_info *tp)
 {
-  if (tp->private)
+  if (tp->priv)
     {
       if (tp->private_dtor)
-       tp->private_dtor (tp->private);
+       tp->private_dtor (tp->priv);
       else
-       xfree (tp->private);
+       xfree (tp->priv);
     }
 
   xfree (tp->name);
@@ -289,11 +288,11 @@ add_thread_silent (ptid_t ptid)
 }
 
 struct thread_info *
-add_thread_with_info (ptid_t ptid, struct private_thread_info *private)
+add_thread_with_info (ptid_t ptid, struct private_thread_info *priv)
 {
   struct thread_info *result = add_thread_silent (ptid);
 
-  result->private = private;
+  result->priv = priv;
 
   if (print_thread_events)
     printf_unfiltered (_("[New %s]\n"), target_pid_to_str (ptid));
@@ -626,16 +625,29 @@ thread_alive (struct thread_info *tp)
 void
 prune_threads (void)
 {
-  struct thread_info *tp, *next;
+  struct thread_info *tp, *tmp;
 
-  for (tp = thread_list; tp; tp = next)
+  ALL_THREADS_SAFE (tp, tmp)
     {
-      next = tp->next;
       if (!thread_alive (tp))
        delete_thread (tp->ptid);
     }
 }
 
+/* See gdbthreads.h.  */
+
+void
+delete_exited_threads (void)
+{
+  struct thread_info *tp, *tmp;
+
+  ALL_THREADS_SAFE (tp, tmp)
+    {
+      if (tp->state == THREAD_EXITED)
+       delete_thread (tp->ptid);
+    }
+}
+
 /* Disable storing stack temporaries for the thread whose id is
    stored in DATA.  */
 
@@ -1382,6 +1394,24 @@ make_cleanup_restore_current_thread (void)
                            restore_current_thread_cleanup_dtor);
 }
 
+/* If non-zero tp_array_compar should sort in ascending order, otherwise in
+   descending order.  */
+
+static int tp_array_compar_ascending;
+
+/* Sort an array for struct thread_info pointers by their NUM, order is
+   determined by TP_ARRAY_COMPAR_ASCENDING.  */
+
+static int
+tp_array_compar (const void *ap_voidp, const void *bp_voidp)
+{
+  const struct thread_info *const *ap = ap_voidp;
+  const struct thread_info *const *bp = bp_voidp;
+
+  return ((((*ap)->num > (*bp)->num) - ((*ap)->num < (*bp)->num))
+         * (tp_array_compar_ascending ? +1 : -1));
+}
+
 /* Apply a GDB command to a list of threads.  List syntax is a whitespace
    seperated list of numbers, or ranges, or the keyword `all'.  Ranges consist
    of two numbers seperated by a hyphen.  Examples:
@@ -1398,6 +1428,14 @@ thread_apply_all_command (char *cmd, int from_tty)
   int tc;
   struct thread_array_cleanup ta_cleanup;
 
+  tp_array_compar_ascending = 0;
+  if (cmd != NULL
+      && check_for_argument (&cmd, "-ascending", strlen ("-ascending")))
+    {
+      cmd = skip_spaces (cmd);
+      tp_array_compar_ascending = 1;
+    }
+
   if (cmd == NULL || *cmd == '\000')
     error (_("Please specify a command following the thread ID list"));
 
@@ -1409,9 +1447,10 @@ thread_apply_all_command (char *cmd, int from_tty)
      execute_command.  */
   saved_cmd = xstrdup (cmd);
   make_cleanup (xfree, saved_cmd);
-  tc = thread_count ();
 
-  if (tc)
+  /* Note this includes exited threads.  */
+  tc = thread_count ();
+  if (tc != 0)
     {
       struct thread_info **tp_array;
       struct thread_info *tp;
@@ -1421,8 +1460,6 @@ thread_apply_all_command (char *cmd, int from_tty)
          command.  */
       tp_array = xmalloc (sizeof (struct thread_info *) * tc);
       make_cleanup (xfree, tp_array);
-      ta_cleanup.tp_array = tp_array;
-      ta_cleanup.count = tc;
 
       ALL_NON_EXITED_THREADS (tp)
         {
@@ -1430,7 +1467,15 @@ thread_apply_all_command (char *cmd, int from_tty)
           tp->refcount++;
           i++;
         }
+      /* Because we skipped exited threads, we may end up with fewer
+        threads in the array than the total count of threads.  */
+      gdb_assert (i <= tc);
 
+      if (i != 0)
+       qsort (tp_array, i, sizeof (*tp_array), tp_array_compar);
+
+      ta_cleanup.tp_array = tp_array;
+      ta_cleanup.count = i;
       make_cleanup (set_thread_refcount, &ta_cleanup);
 
       for (k = 0; k != i; k++)
@@ -1506,7 +1551,7 @@ thread_apply_command (char *tidlist, int from_tty)
 /* Switch to the specified thread.  Will dispatch off to thread_apply_command
    if prefix of arg is `apply'.  */
 
-static void
+void
 thread_command (char *tidstr, int from_tty)
 {
   if (!tidstr)
@@ -1739,7 +1784,14 @@ The new thread ID must be currently known."),
                  &thread_apply_list, "thread apply ", 1, &thread_cmd_list);
 
   add_cmd ("all", class_run, thread_apply_all_command,
-          _("Apply a command to all threads."), &thread_apply_list);
+          _("\
+Apply a command to all threads.\n\
+\n\
+Usage: thread apply all [-ascending] <command>\n\
+-ascending: Call <command> for all threads in ascending order.\n\
+            The default is descending order.\
+"),
+          &thread_apply_list);
 
   add_cmd ("name", class_run, thread_name_command,
           _("Set the current thread's name.\n\
@@ -1752,8 +1804,7 @@ Usage: thread find REGEXP\n\
 Will display thread ids whose name, target ID, or extra info matches REGEXP."),
           &thread_cmd_list);
 
-  if (!xdb_commands)
-    add_com_alias ("t", "thread", class_run, 1);
+  add_com_alias ("t", "thread", class_run, 1);
 
   add_setshow_boolean_cmd ("thread-events", no_class,
          &print_thread_events, _("\