/* Remote target communications for serial-line targets in custom GDB protocol
- Copyright (C) 1988-2021 Free Software Foundation, Inc.
+ Copyright (C) 1988-2022 Free Software Foundation, Inc.
This file is part of GDB.
Otherwise zero, meaning to use the guessed size. */
long explicit_packet_size = 0;
- /* remote_wait is normally called when the target is running and
- waits for a stop reply packet. But sometimes we need to call it
- when the target is already stopped. We can send a "?" packet
- and have remote_wait read the response. Or, if we already have
- the response, we can stash it in BUF and tell remote_wait to
- skip calling getpkt. This flag is set when BUF contains a
- stop reply packet and the target is not waiting. */
- int cached_wait_status = 0;
-
/* True, if in no ack mode. That is, neither GDB nor the stub will
expect acks from each other. The connection is assumed to be
reliable. */
static const target_info remote_target_info = {
"remote",
- N_("Remote serial target in gdb-specific protocol"),
+ N_("Remote target using gdb-specific protocol"),
remote_doc
};
void store_registers (struct regcache *, int) override;
void prepare_to_store (struct regcache *) override;
- void files_info () override;
-
int insert_breakpoint (struct gdbarch *, struct bp_target_info *) override;
int remove_breakpoint (struct gdbarch *, struct bp_target_info *,
bool use_agent (bool use) override;
bool can_use_agent () override;
- struct btrace_target_info *enable_btrace (ptid_t ptid,
- const struct btrace_config *conf) override;
+ struct btrace_target_info *
+ enable_btrace (thread_info *tp, const struct btrace_config *conf) override;
void disable_btrace (struct btrace_target_info *tinfo) override;
void print_one_stopped_thread (thread_info *thread);
void process_initial_stop_replies (int from_tty);
- thread_info *remote_add_thread (ptid_t ptid, bool running, bool executing);
+ thread_info *remote_add_thread (ptid_t ptid, bool running, bool executing,
+ bool silent_p);
void btrace_sync_conf (const btrace_config *conf);
void remote_btrace_maybe_reopen ();
void remove_new_fork_children (threads_listing_context *context);
- void kill_new_fork_children (int pid);
+ void kill_new_fork_children (inferior *inf);
void discard_pending_stop_replies (struct inferior *inf);
int stop_reply_queue_length ();
static const target_info extended_remote_target_info = {
"extended-remote",
- N_("Extended remote serial target in gdb-specific protocol"),
+ N_("Extended remote target using gdb-specific protocol"),
remote_doc
};
bool supports_disable_randomization () override;
};
+struct stop_reply : public notif_event
+{
+ ~stop_reply ();
+
+ /* The identifier of the thread about this event */
+ ptid_t ptid;
+
+ /* The remote state this event is associated with. When the remote
+ connection, represented by a remote_state object, is closed,
+ all the associated stop_reply events should be released. */
+ struct remote_state *rs;
+
+ struct target_waitstatus ws;
+
+ /* The architecture associated with the expedited registers. */
+ gdbarch *arch;
+
+ /* Expedited registers. This makes remote debugging a bit more
+ efficient for those targets that provide critical registers as
+ part of their normal status mechanism (as another roundtrip to
+ fetch them is avoided). */
+ std::vector<cached_reg_t> regcache;
+
+ enum target_stop_reason stop_reason;
+
+ CORE_ADDR watch_data_address;
+
+ int core;
+};
+
/* See remote.h. */
bool
struct packet_config;
-static void show_packet_config_cmd (struct packet_config *config);
-
static void show_remote_protocol_packet_cmd (struct ui_file *file,
int from_tty,
struct cmd_list_element *c,
static enum packet_support packet_support (int packet);
static void
-show_packet_config_cmd (struct packet_config *config)
+show_packet_config_cmd (ui_file *file, struct packet_config *config)
{
const char *support = "internal-error";
switch (config->detect)
{
case AUTO_BOOLEAN_AUTO:
- printf_filtered (_("Support for the `%s' packet "
- "is auto-detected, currently %s.\n"),
- config->name, support);
+ fprintf_filtered (file,
+ _("Support for the `%s' packet "
+ "is auto-detected, currently %s.\n"),
+ config->name, support);
break;
case AUTO_BOOLEAN_TRUE:
case AUTO_BOOLEAN_FALSE:
- printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
- config->name, support);
+ fprintf_filtered (file,
+ _("Support for the `%s' packet is currently %s.\n"),
+ config->name, support);
break;
}
}
{
if (c == packet->show_cmd)
{
- show_packet_config_cmd (packet);
+ show_packet_config_cmd (file, packet);
return;
}
}
for (i = 0; i < NR_Z_PACKET_TYPES; i++)
{
- show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]);
+ show_packet_config_cmd (file, &remote_protocol_packets[PACKET_Z0 + i]);
}
}
ptid_t ptid);
/* Add thread PTID to GDB's thread list. Tag it as executing/running
- according to RUNNING. */
+ according to EXECUTING and RUNNING respectively. If SILENT_P (or the
+ remote_state::starting_up flag) is true then the new thread is added
+ silently, otherwise the new thread will be announced to the user. */
thread_info *
-remote_target::remote_add_thread (ptid_t ptid, bool running, bool executing)
+remote_target::remote_add_thread (ptid_t ptid, bool running, bool executing,
+ bool silent_p)
{
struct remote_state *rs = get_remote_state ();
struct thread_info *thread;
consider that a single-threaded target, mentioning a new thread
might be confusing to the user. Be silent then, preserving the
age old behavior. */
- if (rs->starting_up)
+ if (rs->starting_up || silent_p)
thread = add_thread_silent (this, ptid);
else
thread = add_thread (this, ptid);
{
/* We're seeing an event on a thread id we knew had exited.
This has to be a new thread reusing the old id. Add it. */
- remote_add_thread (currthread, running, executing);
+ remote_add_thread (currthread, running, executing, false);
return;
}
else
{
thread_info *thr
- = remote_add_thread (currthread, running, executing);
+ = remote_add_thread (currthread, running, executing, false);
switch_to_thread (thr);
}
return;
/* This is really a new thread. Add it. */
thread_info *new_thr
- = remote_add_thread (currthread, running, executing);
+ = remote_add_thread (currthread, running, executing, false);
/* If we found a new inferior, let the common code do whatever
it needs to with it (e.g., read shared libraries, insert
/* Use the previously fetched status. */
gdb_assert (wait_status != NULL);
- strcpy (rs->buf.data (), wait_status);
- rs->cached_wait_status = 1;
+ struct notif_event *reply
+ = remote_notif_parse (this, ¬if_client_stop, wait_status);
+ push_stop_reply ((struct stop_reply *) reply);
::start_remote (from_tty); /* Initialize gdb process mechanisms. */
}
/* Reset the target state; these things will be queried either by
remote_query_supported or as they are needed. */
reset_all_packet_configs_support ();
- rs->cached_wait_status = 0;
rs->explicit_packet_size = 0;
rs->noack_mode = 0;
rs->extended = extended_p;
rs->wait_forever_enabled_p = 1;
}
+/* Determine if WS represents a fork status. */
+
+static bool
+is_fork_status (target_waitkind kind)
+{
+ return (kind == TARGET_WAITKIND_FORKED
+ || kind == TARGET_WAITKIND_VFORKED);
+}
+
+/* Return THREAD's pending status if it is a pending fork parent, else
+ return nullptr. */
+
+static const target_waitstatus *
+thread_pending_fork_status (struct thread_info *thread)
+{
+ const target_waitstatus &ws
+ = (thread->has_pending_waitstatus ()
+ ? thread->pending_waitstatus ()
+ : thread->pending_follow);
+
+ if (!is_fork_status (ws.kind ()))
+ return nullptr;
+
+ return &ws;
+}
+
/* Detach the specified process. */
void
if (from_tty && !rs->extended && number_of_live_inferiors (this) == 1)
puts_filtered (_("Ending remote debugging.\n"));
+ /* See if any thread of the inferior we are detaching has a pending fork
+ status. In that case, we must detach from the child resulting from
+ that fork. */
+ for (thread_info *thread : inf->non_exited_threads ())
+ {
+ const target_waitstatus *ws = thread_pending_fork_status (thread);
+
+ if (ws == nullptr)
+ continue;
+
+ remote_detach_pid (ws->child_ptid ().pid ());
+ }
+
+ /* Check also for any pending fork events in the stop reply queue. */
+ remote_notif_get_pending_events (¬if_client_stop);
+ for (stop_reply_up &reply : rs->stop_reply_queue)
+ {
+ if (reply->ptid.pid () != pid)
+ continue;
+
+ if (!is_fork_status (reply->ws.kind ()))
+ continue;
+
+ remote_detach_pid (reply->ws.child_ptid ().pid ());
+ }
+
thread_info *tp = find_thread_ptid (this, inferior_ptid);
/* Check to see if we are detaching a fork parent. Note that if we
if (packet_support (PACKET_vAttach) == PACKET_DISABLE)
error (_("This target does not support attaching to a process"));
- if (from_tty)
- {
- const char *exec_file = get_exec_file (0);
-
- if (exec_file)
- printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file,
- target_pid_to_str (ptid_t (pid)).c_str ());
- else
- printf_unfiltered (_("Attaching to %s\n"),
- target_pid_to_str (ptid_t (pid)).c_str ());
- }
+ target_announce_attach (from_tty, pid);
xsnprintf (rs->buf.data (), get_remote_packet_size (), "vAttach;%x", pid);
putpkt (rs->buf);
ptid. */
ptid_t curr_ptid = remote_current_thread (ptid_t (pid));
- /* Add the main thread to the thread list. */
- thread_info *thr = add_thread_silent (this, curr_ptid);
+ /* Add the main thread to the thread list. We add the thread
+ silently in this case (the final true parameter). */
+ thread_info *thr = remote_add_thread (curr_ptid, true, true, true);
switch_to_thread (thr);
-
- /* Don't consider the thread stopped until we've processed the
- saved stop reply. */
- set_executing (this, thr->ptid, true);
}
/* Next, if the target can specify a description, read it. We do
/* Use the previously fetched status. */
gdb_assert (wait_status != NULL);
- if (target_can_async_p ())
- {
- struct notif_event *reply
- = remote_notif_parse (this, ¬if_client_stop, wait_status);
-
- push_stop_reply ((struct stop_reply *) reply);
+ struct notif_event *reply
+ = remote_notif_parse (this, ¬if_client_stop, wait_status);
- target_async (1);
- }
- else
- {
- gdb_assert (wait_status != NULL);
- strcpy (rs->buf.data (), wait_status);
- rs->cached_wait_status = 1;
- }
+ push_stop_reply ((struct stop_reply *) reply);
}
else
{
gdb_assert (wait_status == NULL);
gdb_assert (target_can_async_p ());
- target_async (1);
}
}
for (thread_info *tp : all_non_exited_threads (this, ptid))
get_remote_thread_info (tp)->set_resumed ();
- /* We are about to start executing the inferior, let's register it
- with the event loop. NOTE: this is the one place where all the
- execution commands end up. We could alternatively do this in each
- of the execution commands in infcmd.c. */
- /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
- into infcmd.c in order to allow inferior function calls to work
- NOT asynchronously. */
- if (target_can_async_p ())
- target_async (1);
-
/* We've just told the target to resume. The remote server will
wait for the inferior to stop, and then send a stop reply. In
the mean time, we can't start another command/query ourselves
rs->waiting_for_stop_reply = 1;
}
-static int is_pending_fork_parent_thread (struct thread_info *thread);
-
/* Private per-inferior info for target remote processes. */
struct remote_inferior : public private_inferior
return static_cast<remote_inferior *> (inf->priv.get ());
}
-struct stop_reply : public notif_event
-{
- ~stop_reply ();
-
- /* The identifier of the thread about this event */
- ptid_t ptid;
-
- /* The remote state this event is associated with. When the remote
- connection, represented by a remote_state object, is closed,
- all the associated stop_reply events should be released. */
- struct remote_state *rs;
-
- struct target_waitstatus ws;
-
- /* The architecture associated with the expedited registers. */
- gdbarch *arch;
-
- /* Expedited registers. This makes remote debugging a bit more
- efficient for those targets that provide critical registers as
- part of their normal status mechanism (as another roundtrip to
- fetch them is avoided). */
- std::vector<cached_reg_t> regcache;
-
- enum target_stop_reason stop_reason;
-
- CORE_ADDR watch_data_address;
-
- int core;
-};
-
/* Class used to track the construction of a vCont packet in the
outgoing packet buffer. This is used to send multiple vCont
packets if we have more actions than would fit a single packet. */
/* If a thread is the parent of an unfollowed fork, then we
can't do a global wildcard, as that would resume the fork
child. */
- if (is_pending_fork_parent_thread (tp))
+ if (thread_pending_fork_status (tp) != nullptr)
may_global_wildcard_vcont = false;
}
rs->ctrlc_pending_p = 1;
/* If the inferior is stopped already, but the core didn't know
- about it yet, just ignore the request. The cached wait status
+ about it yet, just ignore the request. The pending stop events
will be collected in remote_wait. */
- if (rs->cached_wait_status)
+ if (stop_reply_queue_length () > 0)
return;
/* Send interrupt_sequence to remote target. */
REMOTE_NOTIF_STOP,
};
-/* Determine if THREAD_PTID is a pending fork parent thread. ARG contains
- the pid of the process that owns the threads we want to check, or
- -1 if we want to check all threads. */
-
-static int
-is_pending_fork_parent (const target_waitstatus &ws, int event_pid,
- ptid_t thread_ptid)
-{
- if (ws.kind () == TARGET_WAITKIND_FORKED
- || ws.kind () == TARGET_WAITKIND_VFORKED)
- {
- if (event_pid == -1 || event_pid == thread_ptid.pid ())
- return 1;
- }
-
- return 0;
-}
-
-/* Return the thread's pending status used to determine whether the
- thread is a fork parent stopped at a fork event. */
-
-static const target_waitstatus &
-thread_pending_fork_status (struct thread_info *thread)
-{
- if (thread->has_pending_waitstatus ())
- return thread->pending_waitstatus ();
- else
- return thread->pending_follow;
-}
-
-/* Determine if THREAD is a pending fork parent thread. */
-
-static int
-is_pending_fork_parent_thread (struct thread_info *thread)
-{
- const target_waitstatus &ws = thread_pending_fork_status (thread);
- int pid = -1;
-
- return is_pending_fork_parent (ws, pid, thread->ptid);
-}
-
/* If CONTEXT contains any fork child threads that have not been
reported yet, remove them from the CONTEXT list. If such a
thread exists it is because we are stopped at a fork catchpoint
void
remote_target::remove_new_fork_children (threads_listing_context *context)
{
- int pid = -1;
struct notif_client *notif = ¬if_client_stop;
/* For any threads stopped at a fork event, remove the corresponding
fork child threads from the CONTEXT list. */
for (thread_info *thread : all_non_exited_threads (this))
{
- const target_waitstatus &ws = thread_pending_fork_status (thread);
+ const target_waitstatus *ws = thread_pending_fork_status (thread);
+
+ if (ws == nullptr)
+ continue;
- if (is_pending_fork_parent (ws, pid, thread->ptid))
- context->remove_thread (ws.child_ptid ());
+ context->remove_thread (ws->child_ptid ());
}
/* Check for any pending fork events (not reported or processed yet)
/* Leave the notification pending, since the server expects that
we acknowledge it with vStopped. But clear its contents, so
that later on when we acknowledge it, we also discard it. */
+ remote_debug_printf
+ ("discarding in-flight notification: ptid: %s, ws: %s\n",
+ reply->ptid.to_string().c_str(),
+ reply->ws.to_string ().c_str ());
reply->ws.set_ignore ();
-
- if (remote_debug)
- fprintf_unfiltered (gdb_stdlog,
- "discarded in-flight notification\n");
}
/* Discard the stop replies we have already pulled with
{
return event->ptid.pid () == inf->pid;
});
+ for (auto it = iter; it != rs->stop_reply_queue.end (); ++it)
+ remote_debug_printf
+ ("discarding queued stop reply: ptid: %s, ws: %s\n",
+ reply->ptid.to_string().c_str(),
+ reply->ws.to_string ().c_str ());
rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ());
}
if (notif_debug)
fprintf_unfiltered (gdb_stdlog,
"notif: discard queued event: 'Stop' in %s\n",
- target_pid_to_str (ptid).c_str ());
+ ptid.to_string ().c_str ());
return result;
}
remote_state *rs = get_remote_state ();
struct stop_reply *r = remote_notif_remove_queued_reply (ptid);
- if (!rs->stop_reply_queue.empty ())
+ if (!rs->stop_reply_queue.empty () && target_can_async_p ())
{
/* There's still at least an event left. */
mark_async_event_handler (rs->remote_async_inferior_event_token);
if (notif_debug)
fprintf_unfiltered (gdb_stdlog,
"notif: push 'Stop' %s to queue %d\n",
- target_pid_to_str (new_event->ptid).c_str (),
+ new_event->ptid.to_string ().c_str (),
int (rs->stop_reply_queue.size ()));
- mark_async_event_handler (rs->remote_async_inferior_event_token);
+ /* Mark the pending event queue only if async mode is currently enabled.
+ If async mode is not currently enabled, then, if it later becomes
+ enabled, and there are events in this queue, we will mark the event
+ token at that point, see remote_target::async. */
+ if (target_is_async_p ())
+ mark_async_event_handler (rs->remote_async_inferior_event_token);
}
/* Returns true if we have a stop reply for PTID. */
ambiguous = true;
}
+ gdb_assert (first_resumed_thread != nullptr);
+
remote_debug_printf ("first resumed thread is %s",
pid_to_str (first_resumed_thread->ptid).c_str ());
remote_debug_printf ("is this guess ambiguous? = %d", ambiguous);
- gdb_assert (first_resumed_thread != nullptr);
-
/* Warn if the remote target is sending ambiguous stop replies. */
if (ambiguous)
{
stop_reply = queued_stop_reply (ptid);
if (stop_reply != NULL)
- return process_stop_reply (stop_reply, status);
-
- if (rs->cached_wait_status)
- /* Use the cached wait status, but only once. */
- rs->cached_wait_status = 0;
+ {
+ /* None of the paths that push a stop reply onto the queue should
+ have set the waiting_for_stop_reply flag. */
+ gdb_assert (!rs->waiting_for_stop_reply);
+ event_ptid = process_stop_reply (stop_reply, status);
+ }
else
{
- int ret;
- int is_notif;
int forever = ((options & TARGET_WNOHANG) == 0
&& rs->wait_forever_enabled_p);
_never_ wait for ever -> test on target_is_async_p().
However, before we do that we need to ensure that the caller
knows how to take the target into/out of async mode. */
- ret = getpkt_or_notif_sane (&rs->buf, forever, &is_notif);
+ int is_notif;
+ int ret = getpkt_or_notif_sane (&rs->buf, forever, &is_notif);
/* GDB gets a notification. Return to core as this event is
not interesting. */
if (ret == -1 && (options & TARGET_WNOHANG) != 0)
return minus_one_ptid;
- }
- buf = rs->buf.data ();
+ buf = rs->buf.data ();
- /* Assume that the target has acknowledged Ctrl-C unless we receive
- an 'F' or 'O' packet. */
- if (buf[0] != 'F' && buf[0] != 'O')
- rs->ctrlc_pending_p = 0;
+ /* Assume that the target has acknowledged Ctrl-C unless we receive
+ an 'F' or 'O' packet. */
+ if (buf[0] != 'F' && buf[0] != 'O')
+ rs->ctrlc_pending_p = 0;
- switch (buf[0])
- {
- case 'E': /* Error of some sort. */
- /* We're out of sync with the target now. Did it continue or
- not? Not is more likely, so report a stop. */
- rs->waiting_for_stop_reply = 0;
+ switch (buf[0])
+ {
+ case 'E': /* Error of some sort. */
+ /* We're out of sync with the target now. Did it continue or
+ not? Not is more likely, so report a stop. */
+ rs->waiting_for_stop_reply = 0;
- warning (_("Remote failure reply: %s"), buf);
- status->set_stopped (GDB_SIGNAL_0);
- break;
- case 'F': /* File-I/O request. */
- /* GDB may access the inferior memory while handling the File-I/O
- request, but we don't want GDB accessing memory while waiting
- for a stop reply. See the comments in putpkt_binary. Set
- waiting_for_stop_reply to 0 temporarily. */
- rs->waiting_for_stop_reply = 0;
- remote_fileio_request (this, buf, rs->ctrlc_pending_p);
- rs->ctrlc_pending_p = 0;
- /* GDB handled the File-I/O request, and the target is running
- again. Keep waiting for events. */
- rs->waiting_for_stop_reply = 1;
- break;
- case 'N': case 'T': case 'S': case 'X': case 'W':
- {
- /* There is a stop reply to handle. */
- rs->waiting_for_stop_reply = 0;
+ warning (_("Remote failure reply: %s"), buf);
+ status->set_stopped (GDB_SIGNAL_0);
+ break;
+ case 'F': /* File-I/O request. */
+ /* GDB may access the inferior memory while handling the File-I/O
+ request, but we don't want GDB accessing memory while waiting
+ for a stop reply. See the comments in putpkt_binary. Set
+ waiting_for_stop_reply to 0 temporarily. */
+ rs->waiting_for_stop_reply = 0;
+ remote_fileio_request (this, buf, rs->ctrlc_pending_p);
+ rs->ctrlc_pending_p = 0;
+ /* GDB handled the File-I/O request, and the target is running
+ again. Keep waiting for events. */
+ rs->waiting_for_stop_reply = 1;
+ break;
+ case 'N': case 'T': case 'S': case 'X': case 'W':
+ {
+ /* There is a stop reply to handle. */
+ rs->waiting_for_stop_reply = 0;
- stop_reply
- = (struct stop_reply *) remote_notif_parse (this,
- ¬if_client_stop,
- rs->buf.data ());
+ stop_reply
+ = (struct stop_reply *) remote_notif_parse (this,
+ ¬if_client_stop,
+ rs->buf.data ());
- event_ptid = process_stop_reply (stop_reply, status);
- break;
- }
- case 'O': /* Console output. */
- remote_console_output (buf + 1);
- break;
- case '\0':
- if (rs->last_sent_signal != GDB_SIGNAL_0)
- {
- /* Zero length reply means that we tried 'S' or 'C' and the
- remote system doesn't support it. */
- target_terminal::ours_for_output ();
- printf_filtered
- ("Can't send signals to this remote system. %s not sent.\n",
- gdb_signal_to_name (rs->last_sent_signal));
- rs->last_sent_signal = GDB_SIGNAL_0;
- target_terminal::inferior ();
-
- strcpy (buf, rs->last_sent_step ? "s" : "c");
- putpkt (buf);
+ event_ptid = process_stop_reply (stop_reply, status);
+ break;
+ }
+ case 'O': /* Console output. */
+ remote_console_output (buf + 1);
+ break;
+ case '\0':
+ if (rs->last_sent_signal != GDB_SIGNAL_0)
+ {
+ /* Zero length reply means that we tried 'S' or 'C' and the
+ remote system doesn't support it. */
+ target_terminal::ours_for_output ();
+ printf_filtered
+ ("Can't send signals to this remote system. %s not sent.\n",
+ gdb_signal_to_name (rs->last_sent_signal));
+ rs->last_sent_signal = GDB_SIGNAL_0;
+ target_terminal::inferior ();
+
+ strcpy (buf, rs->last_sent_step ? "s" : "c");
+ putpkt (buf);
+ break;
+ }
+ /* fallthrough */
+ default:
+ warning (_("Invalid remote reply: %s"), buf);
break;
}
- /* fallthrough */
- default:
- warning (_("Invalid remote reply: %s"), buf);
- break;
}
if (status->kind () == TARGET_WAITKIND_NO_RESUMED)
remote_state *rs = get_remote_state ();
/* Start by clearing the flag that asks for our wait method to be called,
- we'll mark it again at the end if needed. */
+ we'll mark it again at the end if needed. If the target is not in
+ async mode then the async token should not be marked. */
if (target_is_async_p ())
clear_async_event_handler (rs->remote_async_inferior_event_token);
+ else
+ gdb_assert (!async_event_handler_marked
+ (rs->remote_async_inferior_event_token));
ptid_t event_ptid;
}
}
-void
-remote_target::files_info ()
-{
- puts_filtered ("Debugging a target over a serial line.\n");
-}
\f
/* Stuff for dealing with the packets which are part of this protocol.
See comment at top of file for details. */
string_file stb;
stb.putstrn (buf, n, '\\');
- return std::move (stb.string ());
+ return stb.release ();
}
int
"and then try again."));
}
- /* We're sending out a new packet. Make sure we don't look at a
- stale cached response. */
- rs->cached_wait_status = 0;
-
/* Copy the packet into buffer BUF2, encapsulating it
and giving it a checksum. */
int timeout;
int val = -1;
- /* We're reading a new response. Make sure we don't look at a
- previously cached response. */
- rs->cached_wait_status = 0;
-
strcpy (buf->data (), "timeout");
if (forever)
return getpkt_or_notif_sane_1 (buf, forever, 1, is_notif);
}
-/* Kill any new fork children of process PID that haven't been
+/* Kill any new fork children of inferior INF that haven't been
processed by follow_fork. */
void
-remote_target::kill_new_fork_children (int pid)
+remote_target::kill_new_fork_children (inferior *inf)
{
remote_state *rs = get_remote_state ();
struct notif_client *notif = ¬if_client_stop;
- /* Kill the fork child threads of any threads in process PID
- that are stopped at a fork event. */
- for (thread_info *thread : all_non_exited_threads (this))
+ /* Kill the fork child threads of any threads in inferior INF that are stopped
+ at a fork event. */
+ for (thread_info *thread : inf->non_exited_threads ())
{
- const target_waitstatus &ws = thread->pending_follow;
+ const target_waitstatus *ws = thread_pending_fork_status (thread);
- if (is_pending_fork_parent (ws, pid, thread->ptid))
- {
- int child_pid = ws.child_ptid ().pid ();
- int res;
+ if (ws == nullptr)
+ continue;
- res = remote_vkill (child_pid);
- if (res != 0)
- error (_("Can't kill fork child process %d"), child_pid);
- }
+ int child_pid = ws->child_ptid ().pid ();
+ int res = remote_vkill (child_pid);
+
+ if (res != 0)
+ error (_("Can't kill fork child process %d"), child_pid);
}
/* Check for any pending fork events (not reported or processed yet)
- in process PID and kill those fork child threads as well. */
+ in inferior INF and kill those fork child threads as well. */
remote_notif_get_pending_events (notif);
for (auto &event : rs->stop_reply_queue)
- if (is_pending_fork_parent (event->ws, pid, event->ptid))
- {
- int child_pid = event->ws.child_ptid ().pid ();
- int res;
+ {
+ if (event->ptid.pid () != inf->pid)
+ continue;
- res = remote_vkill (child_pid);
- if (res != 0)
- error (_("Can't kill fork child process %d"), child_pid);
- }
+ if (!is_fork_status (event->ws.kind ()))
+ continue;
+
+ int child_pid = event->ws.child_ptid ().pid ();
+ int res = remote_vkill (child_pid);
+
+ if (res != 0)
+ error (_("Can't kill fork child process %d"), child_pid);
+ }
}
\f
remote_target::kill ()
{
int res = -1;
- int pid = inferior_ptid.pid ();
+ inferior *inf = find_inferior_pid (this, inferior_ptid.pid ());
struct remote_state *rs = get_remote_state ();
+ gdb_assert (inf != nullptr);
+
if (packet_support (PACKET_vKill) != PACKET_DISABLE)
{
/* If we're stopped while forking and we haven't followed yet,
kill the child task. We need to do this before killing the
parent task because if this is a vfork then the parent will
be sleeping. */
- kill_new_fork_children (pid);
+ kill_new_fork_children (inf);
- res = remote_vkill (pid);
+ res = remote_vkill (inf->pid);
if (res == 0)
{
target_mourn_inferior (inferior_ptid);
}
}
-/* Read the current thread's btrace configuration from the target and
- store it into CONF. */
+/* Read TP's btrace configuration from the target and store it into CONF. */
static void
-btrace_read_config (struct btrace_config *conf)
+btrace_read_config (thread_info *tp, struct btrace_config *conf)
{
+ /* target_read_stralloc relies on INFERIOR_PTID. */
+ scoped_restore_current_thread restore_thread;
+ switch_to_thread (tp);
+
gdb::optional<gdb::char_vector> xml
= target_read_stralloc (current_inferior ()->top_target (),
TARGET_OBJECT_BTRACE_CONF, "");
if (packet_support (PACKET_qXfer_btrace_conf) != PACKET_ENABLE)
return;
- scoped_restore_current_thread restore_thread;
-
for (thread_info *tp : all_non_exited_threads (this))
{
- set_general_thread (tp->ptid);
-
memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config));
- btrace_read_config (&rs->btrace_config);
+ btrace_read_config (tp, &rs->btrace_config);
if (rs->btrace_config.format == BTRACE_FORMAT_NONE)
continue;
/* Enable branch tracing. */
struct btrace_target_info *
-remote_target::enable_btrace (ptid_t ptid, const struct btrace_config *conf)
+remote_target::enable_btrace (thread_info *tp,
+ const struct btrace_config *conf)
{
struct btrace_target_info *tinfo = NULL;
struct packet_config *packet = NULL;
btrace_sync_conf (conf);
+ ptid_t ptid = tp->ptid;
set_general_thread (ptid);
buf += xsnprintf (buf, endbuf - buf, "%s", packet->name);
tracing itself is not impacted. */
try
{
- btrace_read_config (&tinfo->conf);
+ btrace_read_config (tp, &tinfo->conf);
}
catch (const gdb_exception_error &err)
{
projects / binutils-gdb.git / blobdiff