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0e3b7c25ee
This commit adds a new object type gdb.TargetConnection. This new
type represents a connection within GDB (a connection as displayed by
'info connections').
There's three ways to find a gdb.TargetConnection, there's a new
'gdb.connections()' function, which returns a list of all currently
active connections.
Or you can read the new 'connection' property on the gdb.Inferior
object type, this contains the connection for that inferior (or None
if the inferior has no connection, for example, it is exited).
Finally, there's a new gdb.events.connection_removed event registry,
this emits a new gdb.ConnectionEvent whenever a connection is removed
from GDB (this can happen when all inferiors using a connection exit,
though this is not always the case, depending on the connection type).
The gdb.ConnectionEvent has a 'connection' property, which is the
gdb.TargetConnection being removed from GDB.
The gdb.TargetConnection has an 'is_valid()' method. A connection
object becomes invalid when the underlying connection is removed from
GDB (as discussed above, this might be when all inferiors using a
connection exit, or it might be when the user explicitly replaces a
connection in GDB by issuing another 'target' command).
The gdb.TargetConnection has the following read-only properties:
'num': The number for this connection,
'type': e.g. 'native', 'remote', 'sim', etc
'description': The longer description as seen in the 'info
connections' command output.
'details': A string or None. Extra details for the connection, for
example, a remote connection's details might be
'hostname:port'.
264 lines
10 KiB
C++
264 lines
10 KiB
C++
/* Observers
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Copyright (C) 2016-2021 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef OBSERVABLE_H
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#define OBSERVABLE_H
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#include "gdbsupport/observable.h"
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struct bpstat;
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struct so_list;
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struct objfile;
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struct thread_info;
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struct inferior;
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struct process_stratum_target;
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struct trace_state_variable;
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namespace gdb
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{
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namespace observers
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{
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/* The inferior has stopped for real. The BS argument describes the
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breakpoints were are stopped at, if any. Second argument
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PRINT_FRAME non-zero means display the location where the
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inferior has stopped.
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gdb notifies all normal_stop observers when the inferior execution
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has just stopped, the associated messages and annotations have been
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printed, and the control is about to be returned to the user.
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Note that the normal_stop notification is not emitted when the
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execution stops due to a breakpoint, and this breakpoint has a
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condition that is not met. If the breakpoint has any associated
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commands list, the commands are executed after the notification is
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emitted. */
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extern observable<struct bpstat */* bs */, int /* print_frame */> normal_stop;
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/* The inferior was stopped by a signal. */
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extern observable<enum gdb_signal /* siggnal */> signal_received;
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/* We are done with a step/next/si/ni command. */
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extern observable<> end_stepping_range;
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/* The inferior was terminated by a signal. */
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extern observable<enum gdb_signal /* siggnal */> signal_exited;
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/* The inferior program is finished. */
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extern observable<int /* exitstatus */> exited;
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/* Reverse execution: target ran out of history info. */
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extern observable<> no_history;
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/* A synchronous command finished. */
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extern observable<> sync_execution_done;
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/* An error was caught while executing a command. */
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extern observable<> command_error;
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/* The target's register contents have changed. */
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extern observable<struct target_ops */* target */> target_changed;
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/* The executable being debugged by GDB has changed: The user
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decided to debug a different program, or the program he was
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debugging has been modified since being loaded by the debugger
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(by being recompiled, for instance). */
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extern observable<> executable_changed;
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/* gdb has just connected to an inferior. For 'run', gdb calls this
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observer while the inferior is still stopped at the entry-point
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instruction. For 'attach' and 'core', gdb calls this observer
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immediately after connecting to the inferior, and before any
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information on the inferior has been printed. */
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extern observable<inferior */* inferior */> inferior_created;
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/* The inferior INF has exec'ed a new executable file. */
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extern observable<struct inferior */* inf */> inferior_execd;
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/* The status of process record for inferior inferior in gdb has
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changed. The process record is started if STARTED is true, and
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the process record is stopped if STARTED is false.
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When STARTED is true, METHOD indicates the short name of the
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method used for recording. If the method supports multiple
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formats, FORMAT indicates which one is being used, otherwise it
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is NULL. When STARTED is false, they are both NULL. */
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extern observable<struct inferior */* inferior */, int /* started */,
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const char */* method */, const char */* format */>
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record_changed;
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/* The shared library specified by SOLIB has been loaded. Note that
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when gdb calls this observer, the library's symbols probably
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haven't been loaded yet. */
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extern observable<struct so_list */* solib */> solib_loaded;
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/* The shared library specified by SOLIB has been unloaded. Note
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that when gdb calls this observer, the library's symbols have not
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been unloaded yet, and thus are still available. */
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extern observable<struct so_list */* solib */> solib_unloaded;
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/* The symbol file specified by OBJFILE has been loaded. Called
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with OBJFILE equal to NULL to indicate previously loaded symbol
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table data has now been invalidated. */
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extern observable<struct objfile */* objfile */> new_objfile;
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/* The object file specified by OBJFILE is about to be freed. */
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extern observable<struct objfile */* objfile */> free_objfile;
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/* The thread specified by T has been created. */
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extern observable<struct thread_info */* t */> new_thread;
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/* The thread specified by T has exited. The SILENT argument
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indicates that gdb is removing the thread from its tables without
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wanting to notify the user about it. */
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extern observable<struct thread_info */* t */, int /* silent */> thread_exit;
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/* An explicit stop request was issued to PTID. If PTID equals
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minus_one_ptid, the request applied to all threads. If
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ptid_is_pid(PTID) returns true, the request applied to all
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threads of the process pointed at by PTID. Otherwise, the
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request applied to the single thread pointed at by PTID. */
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extern observable<ptid_t /* ptid */> thread_stop_requested;
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/* The target was resumed. The PTID parameter specifies which
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thread was resume, and may be RESUME_ALL if all threads are
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resumed. */
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extern observable<ptid_t /* ptid */> target_resumed;
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/* The target is about to be proceeded. */
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extern observable<> about_to_proceed;
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/* A new breakpoint B has been created. */
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extern observable<struct breakpoint */* b */> breakpoint_created;
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/* A breakpoint has been destroyed. The argument B is the
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pointer to the destroyed breakpoint. */
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extern observable<struct breakpoint */* b */> breakpoint_deleted;
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/* A breakpoint has been modified in some way. The argument B
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is the modified breakpoint. */
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extern observable<struct breakpoint */* b */> breakpoint_modified;
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/* The trace frame is changed to TFNUM (e.g., by using the 'tfind'
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command). If TFNUM is negative, it means gdb resumes live
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debugging. The number of the tracepoint associated with this
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traceframe is TPNUM. */
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extern observable<int /* tfnum */, int /* tpnum */> traceframe_changed;
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/* The current architecture has changed. The argument NEWARCH is a
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pointer to the new architecture. */
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extern observable<struct gdbarch */* newarch */> architecture_changed;
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/* The thread's ptid has changed. The OLD_PTID parameter specifies
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the old value, and NEW_PTID specifies the new value. */
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extern observable<process_stratum_target * /* target */,
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ptid_t /* old_ptid */, ptid_t /* new_ptid */>
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thread_ptid_changed;
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/* The inferior INF has been added to the list of inferiors. At
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this point, it might not be associated with any process. */
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extern observable<struct inferior */* inf */> inferior_added;
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/* The inferior identified by INF has been attached to a
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process. */
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extern observable<struct inferior */* inf */> inferior_appeared;
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/* Either the inferior associated with INF has been detached from
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the process, or the process has exited. */
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extern observable<struct inferior */* inf */> inferior_exit;
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/* The inferior INF has been removed from the list of inferiors.
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This method is called immediately before freeing INF. */
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extern observable<struct inferior */* inf */> inferior_removed;
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/* Bytes from DATA to DATA + LEN have been written to the inferior
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at ADDR. */
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extern observable<struct inferior */* inferior */, CORE_ADDR /* addr */,
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ssize_t /* len */, const bfd_byte */* data */>
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memory_changed;
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/* Called before a top-level prompt is displayed. CURRENT_PROMPT is
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the current top-level prompt. */
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extern observable<const char */* current_prompt */> before_prompt;
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/* Variable gdb_datadir has been set. The value may not necessarily
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change. */
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extern observable<> gdb_datadir_changed;
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/* The parameter of some 'set' commands in console are changed.
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This method is called after a command 'set param value'. PARAM
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is the parameter of 'set' command, and VALUE is the value of
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changed parameter. */
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extern observable<const char */* param */, const char */* value */>
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command_param_changed;
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/* The new trace state variable TSV is created. */
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extern observable<const struct trace_state_variable */* tsv */> tsv_created;
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/* The trace state variable TSV is deleted. If TSV is NULL, all
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trace state variables are deleted. */
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extern observable<const struct trace_state_variable */* tsv */> tsv_deleted;
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/* The trace state value TSV is modified. */
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extern observable<const struct trace_state_variable */* tsv */> tsv_modified;
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/* An inferior function at ADDRESS is about to be called in thread
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THREAD. */
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extern observable<ptid_t /* thread */, CORE_ADDR /* address */>
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inferior_call_pre;
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/* The inferior function at ADDRESS has just been called. This
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observer is called even if the inferior exits during the call.
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THREAD is the thread in which the function was called, which may
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be different from the current thread. */
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extern observable<ptid_t /* thread */, CORE_ADDR /* address */>
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inferior_call_post;
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/* A register in the inferior has been modified by the gdb user. */
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extern observable<struct frame_info */* frame */, int /* regnum */>
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register_changed;
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/* The user-selected inferior, thread and/or frame has changed. The
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user_select_what flag specifies if the inferior, thread and/or
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frame has changed. */
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extern observable<user_selected_what /* selection */>
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user_selected_context_changed;
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/* This is notified when a styling setting has changed, content may need
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to be updated based on the new settings. */
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extern observable<> styling_changed;
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/* The CLI's notion of the current source has changed. This differs
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from user_selected_context_changed in that it is also set by the
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"list" command. */
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extern observable<> current_source_symtab_and_line_changed;
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/* Called when GDB is about to exit. */
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extern observable<int> gdb_exiting;
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/* When a connection is removed. */
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extern observable<process_stratum_target */* target */> connection_removed;
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} /* namespace observers */
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} /* namespace gdb */
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#endif /* OBSERVABLE_H */
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