Use std::list for remote_notif_state::notif_queue

This changes remote_notif_state::notif_queue to be a std::list and
updates all the uses.

gdb/ChangeLog
2019-04-19  Tom Tromey  <tom@tromey.com>

	* remote.c (remote_target): Use delete.
	* remote-notif.h: Include <list>, not "common/queue.h".
	(notif_client_p): Remove typedef.
	(remote_notif_state): Add constructor, destructor, initializer.
	<notif_queue>: Now a std::list.
	(remote_notif_state_xfree): Don't declare.
	* remote-notif.c (remote_notif_process, handle_notification)
	(remote_notif_state_allocate): Update.
	(~remote_notif_state): Rename from remote_notif_state_xfree.

4 files changed, 38 insertions, 33 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index ac56b09..ac16a7b 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,17 @@
 2019-04-19  Tom Tromey  <tom@tromey.com>
 
+	* remote.c (remote_target): Use delete.
+	* remote-notif.h: Include <list>, not "common/queue.h".
+	(notif_client_p): Remove typedef.
+	(remote_notif_state): Add constructor, destructor, initializer.
+	<notif_queue>: Now a std::list.
+	(remote_notif_state_xfree): Don't declare.
+	* remote-notif.c (remote_notif_process, handle_notification)
+	(remote_notif_state_allocate): Update.
+	(~remote_notif_state): Rename from remote_notif_state_xfree.
+
+2019-04-19  Tom Tromey  <tom@tromey.com>
+
 	* symfile.c (reread_symbols): Update.
 	* objfiles.c (objfile_register_static_link)
 	(objfile_lookup_static_link): Update
diff --git a/gdb/remote-notif.c b/gdb/remote-notif.c
index eece947..2680618 100644
--- a/gdb/remote-notif.c
+++ b/gdb/remote-notif.c
@@ -85,8 +85,6 @@ remote_notif_parse (remote_target *remote,
   return event.release ();
 }
 
-DEFINE_QUEUE_P (notif_client_p);
-
 /* Process notifications in STATE's notification queue one by one.
    EXCEPT is not expected in the queue.  */
 
@@ -94,10 +92,10 @@ void
 remote_notif_process (struct remote_notif_state *state,
 		      struct notif_client *except)
 {
-  while (!QUEUE_is_empty (notif_client_p, state->notif_queue))
+  while (!state->notif_queue.empty ())
     {
-      struct notif_client *nc = QUEUE_deque (notif_client_p,
-					     state->notif_queue);
+      struct notif_client *nc = state->notif_queue.front ();
+      state->notif_queue.pop_front ();
 
       gdb_assert (nc != except);
 
@@ -158,7 +156,7 @@ handle_notification (struct remote_notif_state *state, const char *buf)
 
       /* Notify the event loop there's a stop reply to acknowledge
 	 and that there may be more events to fetch.  */
-      QUEUE_enque (notif_client_p, state->notif_queue, nc);
+      state->notif_queue.push_back (nc);
       if (target_is_non_stop_p ())
 	{
 	  /* In non-stop, We mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN
@@ -212,12 +210,10 @@ handle_notification (struct remote_notif_state *state, const char *buf)
 struct remote_notif_state *
 remote_notif_state_allocate (remote_target *remote)
 {
-  struct remote_notif_state *notif_state = XCNEW (struct remote_notif_state);
+  struct remote_notif_state *notif_state = new struct remote_notif_state;
 
   notif_state->remote = remote;
 
-  notif_state->notif_queue = QUEUE_alloc (notif_client_p, NULL);
-
   /* Register async_event_handler for notification.  */
 
   notif_state->get_pending_events_token
@@ -229,21 +225,16 @@ remote_notif_state_allocate (remote_target *remote)
 
 /* Free STATE and its fields.  */
 
-void
-remote_notif_state_xfree (struct remote_notif_state *state)
+remote_notif_state::~remote_notif_state ()
 {
   int i;
 
-  QUEUE_free (notif_client_p, state->notif_queue);
-
   /* Unregister async_event_handler for notification.  */
-  if (state->get_pending_events_token != NULL)
-    delete_async_event_handler (&state->get_pending_events_token);
+  if (get_pending_events_token != NULL)
+    delete_async_event_handler (&get_pending_events_token);
 
   for (i = 0; i < REMOTE_NOTIF_LAST; i++)
-    delete state->pending_event[i];
-
-  xfree (state);
+    delete pending_event[i];
 }
 
 void
diff --git a/gdb/remote-notif.h b/gdb/remote-notif.h
index 87b52a1..f9b0b2c 100644
--- a/gdb/remote-notif.h
+++ b/gdb/remote-notif.h
@@ -20,8 +20,8 @@
 #ifndef REMOTE_NOTIF_H
 #define REMOTE_NOTIF_H
 
+#include <list>
 #include <memory>
-#include "common/queue.h"
 
 /* An event of a type of async remote notification.  */
 
@@ -48,7 +48,7 @@ struct remote_target;
 
 /* A client to a sort of async remote notification.  */
 
-typedef struct notif_client
+struct notif_client
 {
   /* The name of notification packet.  */
   const char *name;
@@ -79,20 +79,23 @@ typedef struct notif_client
 
   /* Id of this notif_client.  */
   const enum REMOTE_NOTIF_ID id;
-} *notif_client_p;
-
-DECLARE_QUEUE_P (notif_client_p);
+};
 
 /* State on remote async notification.  */
 
 struct remote_notif_state
 {
+  remote_notif_state () = default;
+  ~remote_notif_state ();
+
+  DISABLE_COPY_AND_ASSIGN (remote_notif_state);
+
   /* The remote target.  */
   remote_target *remote;
 
   /* Notification queue.  */
 
-  QUEUE(notif_client_p) *notif_queue;
+  std::list<notif_client *> notif_queue;
 
   /* Asynchronous signal handle registered as event loop source for when
      the remote sent us a notification.  The registered callback
@@ -101,14 +104,14 @@ struct remote_notif_state
 
   struct async_event_handler *get_pending_events_token;
 
-/* One pending event for each notification client.  This is where we
-   keep it until it is acknowledged.  When there is a notification
-   packet, parse it, and create an object of 'struct notif_event' to
-   assign to it.  This field is unchanged until GDB starts to ack
-   this notification (which is done by
-   remote.c:remote_notif_pending_replies).  */
+  /* One pending event for each notification client.  This is where we
+     keep it until it is acknowledged.  When there is a notification
+     packet, parse it, and create an object of 'struct notif_event' to
+     assign to it.  This field is unchanged until GDB starts to ack
+     this notification (which is done by
+     remote.c:remote_notif_pending_replies).  */
 
-  struct notif_event *pending_event[REMOTE_NOTIF_LAST];
+  struct notif_event *pending_event[REMOTE_NOTIF_LAST] {};
 };
 
 void remote_notif_ack (remote_target *remote, notif_client *nc,
@@ -123,7 +126,6 @@ void handle_notification (struct remote_notif_state *notif_state,
 void remote_notif_process (struct remote_notif_state *state,
 			   struct notif_client *except);
 remote_notif_state *remote_notif_state_allocate (remote_target *remote);
-void remote_notif_state_xfree (struct remote_notif_state *state);
 
 extern struct notif_client notif_client_stop;
 
diff --git a/gdb/remote.c b/gdb/remote.c
index 69b479b..5e5fbbf 100644
--- a/gdb/remote.c
+++ b/gdb/remote.c
@@ -4052,7 +4052,7 @@ remote_target::~remote_target ()
   if (rs->remote_async_inferior_event_token)
     delete_async_event_handler (&rs->remote_async_inferior_event_token);
 
-  remote_notif_state_xfree (rs->notif_state);
+  delete rs->notif_state;
 }
 
 /* Query the remote side for the text, data and bss offsets.  */