This C++ifies the remote notification code -- replacing function
pointers with virtual methods and using unique_ptr. This allows for
the removal of some cleanups.
2019-03-06 Tom Tromey <tom@tromey.com>
* remote.c (struct stop_reply_deleter): Remove.
(stop_reply_up): Update.
(struct stop_reply): Derive from notif_event. Don't typedef.
<regcache>: Now a std::vector.
(stop_reply_xfree): Remove.
(stop_reply::~stop_reply): Rename from stop_reply_dtr.
(remote_notif_stop_alloc_reply): Return a unique_ptr. Use new.
(remote_target::discard_pending_stop_replies): Use delete.
(remote_target::remote_parse_stop_reply): Update.
(remote_target::process_stop_reply): Update.
* remote-notif.h (struct notif_event): Add virtual destructor.
Remove "dtr" member.
(struct notif_client) <alloc_event>: Return a unique_ptr.
(notif_event_xfree): Don't declare.
(notif_event_up): New typedef.
* remote-notif.c (remote_notif_ack, remote_notif_parse): Update.
(notif_event_xfree, do_notif_event_xfree): Remove.
(remote_notif_state_xfree): Update.
+2019-03-06 Tom Tromey <tom@tromey.com>
+
+ * remote.c (struct stop_reply_deleter): Remove.
+ (stop_reply_up): Update.
+ (struct stop_reply): Derive from notif_event. Don't typedef.
+ <regcache>: Now a std::vector.
+ (stop_reply_xfree): Remove.
+ (stop_reply::~stop_reply): Rename from stop_reply_dtr.
+ (remote_notif_stop_alloc_reply): Return a unique_ptr. Use new.
+ (remote_target::discard_pending_stop_replies): Use delete.
+ (remote_target::remote_parse_stop_reply): Update.
+ (remote_target::process_stop_reply): Update.
+ * remote-notif.h (struct notif_event): Add virtual destructor.
+ Remove "dtr" member.
+ (struct notif_client) <alloc_event>: Return a unique_ptr.
+ (notif_event_xfree): Don't declare.
+ (notif_event_up): New typedef.
+ * remote-notif.c (remote_notif_ack, remote_notif_parse): Update.
+ (notif_event_xfree, do_notif_event_xfree): Remove.
+ (remote_notif_state_xfree): Update.
+
2019-03-06 Tom Tromey <tom@tromey.com>
* infrun.c (displaced_step_clear_cleanup): Now a
gdb_static_assert (ARRAY_SIZE (notifs) == REMOTE_NOTIF_LAST);
-static void do_notif_event_xfree (void *arg);
-
/* Parse the BUF for the expected notification NC, and send packet to
acknowledge. */
remote_notif_ack (remote_target *remote,
struct notif_client *nc, const char *buf)
{
- struct notif_event *event = nc->alloc_event ();
- struct cleanup *old_chain
- = make_cleanup (do_notif_event_xfree, event);
+ notif_event_up event = nc->alloc_event ();
if (notif_debug)
fprintf_unfiltered (gdb_stdlog, "notif: ack '%s'\n",
nc->ack_command);
- nc->parse (remote, nc, buf, event);
- nc->ack (remote, nc, buf, event);
-
- discard_cleanups (old_chain);
+ nc->parse (remote, nc, buf, event.get ());
+ nc->ack (remote, nc, buf, event.release ());
}
/* Parse the BUF for the expected notification NC. */
remote_notif_parse (remote_target *remote,
struct notif_client *nc, const char *buf)
{
- struct notif_event *event = nc->alloc_event ();
- struct cleanup *old_chain
- = make_cleanup (do_notif_event_xfree, event);
+ notif_event_up event = nc->alloc_event ();
if (notif_debug)
fprintf_unfiltered (gdb_stdlog, "notif: parse '%s'\n", nc->name);
- nc->parse (remote, nc, buf, event);
+ nc->parse (remote, nc, buf, event.get ());
- discard_cleanups (old_chain);
- return event;
+ return event.release ();
}
DEFINE_QUEUE_P (notif_client_p);
}
}
-/* Invoke destructor of EVENT and xfree it. */
-
-void
-notif_event_xfree (struct notif_event *event)
-{
- if (event != NULL && event->dtr != NULL)
- event->dtr (event);
-
- xfree (event);
-}
-
-/* Cleanup wrapper. */
-
-static void
-do_notif_event_xfree (void *arg)
-{
- notif_event_xfree ((struct notif_event *) arg);
-}
-
/* Return an allocated remote_notif_state. */
struct remote_notif_state *
delete_async_event_handler (&state->get_pending_events_token);
for (i = 0; i < REMOTE_NOTIF_LAST; i++)
- notif_event_xfree (state->pending_event[i]);
+ delete state->pending_event[i];
xfree (state);
}
#ifndef REMOTE_NOTIF_H
#define REMOTE_NOTIF_H
+#include <memory>
#include "common/queue.h"
/* An event of a type of async remote notification. */
struct notif_event
{
- /* Destructor. Release everything from SELF, but not SELF
- itself. */
- void (*dtr) (struct notif_event *self);
+ virtual ~notif_event ()
+ {
+ }
};
+/* A unique pointer holding a notif_event. */
+
+typedef std::unique_ptr<notif_event> notif_event_up;
+
/* ID of the notif_client. */
enum REMOTE_NOTIF_ID
struct notif_client *self);
/* Allocate an event. */
- struct notif_event *(*alloc_event) (void);
+ notif_event_up (*alloc_event) ();
/* Id of this notif_client. */
const enum REMOTE_NOTIF_ID id;
notif_client *nc,
const char *buf);
-void notif_event_xfree (struct notif_event *event);
-
void handle_notification (struct remote_notif_state *notif_state,
const char *buf);
struct packet_reg;
struct stop_reply;
-static void stop_reply_xfree (struct stop_reply *);
-
-struct stop_reply_deleter
-{
- void operator() (stop_reply *r) const
- {
- stop_reply_xfree (r);
- }
-};
-
-typedef std::unique_ptr<stop_reply, stop_reply_deleter> stop_reply_up;
+typedef std::unique_ptr<stop_reply> stop_reply_up;
/* Generic configuration support for packets the stub optionally
supports. Allows the user to specify the use of the packet as well
gdb_flush (gdb_stdtarg);
}
-DEF_VEC_O(cached_reg_t);
-
-typedef struct stop_reply
+struct stop_reply : public notif_event
{
- struct notif_event base;
+ ~stop_reply ();
/* The identifier of the thread about this event */
ptid_t ptid;
efficient for those targets that provide critical registers as
part of their normal status mechanism (as another roundtrip to
fetch them is avoided). */
- VEC(cached_reg_t) *regcache;
+ std::vector<cached_reg_t> regcache;
enum target_stop_reason stop_reason;
CORE_ADDR watch_data_address;
int core;
-} *stop_reply_p;
-
-static void
-stop_reply_xfree (struct stop_reply *r)
-{
- notif_event_xfree ((struct notif_event *) r);
-}
+};
/* Return the length of the stop reply queue. */
return 0;
}
-static void
-stop_reply_dtr (struct notif_event *event)
+stop_reply::~stop_reply ()
{
- struct stop_reply *r = (struct stop_reply *) event;
- cached_reg_t *reg;
- int ix;
-
- for (ix = 0;
- VEC_iterate (cached_reg_t, r->regcache, ix, reg);
- ix++)
- xfree (reg->data);
-
- VEC_free (cached_reg_t, r->regcache);
+ for (cached_reg_t ® : regcache)
+ xfree (reg.data);
}
-static struct notif_event *
-remote_notif_stop_alloc_reply (void)
+static notif_event_up
+remote_notif_stop_alloc_reply ()
{
- /* We cast to a pointer to the "base class". */
- struct notif_event *r = (struct notif_event *) XNEW (struct stop_reply);
-
- r->dtr = stop_reply_dtr;
-
- return r;
+ return notif_event_up (new struct stop_reply ());
}
/* A client of notification Stop. */
/* Discard the in-flight notification. */
if (reply != NULL && reply->ptid.pid () == inf->pid)
{
- stop_reply_xfree (reply);
+ delete reply;
rns->pending_event[notif_client_stop.id] = NULL;
}
event->ws.kind = TARGET_WAITKIND_IGNORE;
event->ws.value.integer = 0;
event->stop_reason = TARGET_STOPPED_BY_NO_REASON;
- event->regcache = NULL;
+ event->regcache.clear ();
event->core = -1;
switch (buf[0])
if (fieldsize < register_size (event->arch, reg->regnum))
warning (_("Remote reply is too short: %s"), buf);
- VEC_safe_push (cached_reg_t, event->regcache, &cached_reg);
+ event->regcache.push_back (cached_reg);
}
else
{
&& status->kind != TARGET_WAITKIND_NO_RESUMED)
{
/* Expedited registers. */
- if (stop_reply->regcache)
+ if (!stop_reply->regcache.empty ())
{
struct regcache *regcache
= get_thread_arch_regcache (ptid, stop_reply->arch);
- cached_reg_t *reg;
- int ix;
- for (ix = 0;
- VEC_iterate (cached_reg_t, stop_reply->regcache, ix, reg);
- ix++)
- {
- regcache->raw_supply (reg->num, reg->data);
- xfree (reg->data);
- }
+ for (cached_reg_t ® : stop_reply->regcache)
+ {
+ regcache->raw_supply (reg.num, reg.data);
+ xfree (reg.data);
+ }
- VEC_free (cached_reg_t, stop_reply->regcache);
+ stop_reply->regcache.clear ();
}
remote_notice_new_inferior (ptid, 0);
remote_thr->vcont_resumed = 0;
}
- stop_reply_xfree (stop_reply);
+ delete stop_reply;
return ptid;
}
projects / binutils-gdb.git / commitdiff