This commit is the result of running the gdb/copyright.py script,
which automated the update of the copyright year range for all
source files managed by the GDB project to be updated to include
year 2023.
This renames the fields of cli_interp_base::saved_output_files, as
requested by Simon. I tried to choose names that more obviously
reflect what the field is used for. I also added a couple of
comments.
Approved-By: Simon Marchi <simon.marchi@efficios.com>
When using the "set logging" commands, cli_interp_base::set_logging
will send gdb_stdlog output (among others) to the tee it makes for
gdb_stdout. However, this has the side effect of also causing logging
to use the pager. This is PR gdb/29787.
This patch fixes the problem by keeping stderr and stdlog separate
from stdout, preserving the rule that only gdb_stdout should page.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=29787
Right now, tee_file owns the second stream it writes to. This is done
for the convenience of the users. In a subsequent patch, this will no
longer be convenient, so this patch moves the responsibility for
ownership to the users of tee_file.
CLI redirect uses a global variable, 'saved_output'. However, globals
are generally bad, and there is no need for this one -- it can be a
member of cli_interp_base. This patch makes this change.
For historical reasons, the CLI and the TUI observers are basically
exact duplicates, except for the downcast:
cli:
struct cli_interp *cli = as_cli_interp (interp);
tui:
struct interp *tui = as_tui_interp (interp);
and how they get at the interpreter's ui_out:
cli:
cli->cli_uiout
tui:
tui->interp_ui_out ()
Since interp_ui_out() is a virtual method that also works for the CLI
interpreter, and, both the CLI and the TUI interpreters inherit from
the same base class (cli_interp_base), we can convert the CLI
observers to cast to cli_interp_base instead and use interp_ui_out()
too. With that, the CLI observers will work for the TUI interpreter
as well. This lets us completely eliminate the TUI observers. That's
what this commit does.
Change-Id: Iaf6cf12dfa200ed3ab203a895a72b69dfedbd6e0
Currently, timestamps for logging are done by looking for the use of
gdb_stdlog in vfprintf_unfiltered. This seems potentially buggy, in
that during logging or other redirects (like execute_fn_to_ui_file) we
might have gdb_stdout==gdb_stdlog and so, conceivably, wind up with
timestamps in a log when they were not desired.
It seems better, instead, for timestamps to be a property of the
ui_file itself.
This patch changes gdb to use the new timestamped_file for gdb_stdlog
where appropriate, and removes the special case from
vfprintf_unfiltered.
Note that this may somewhat change the output in some cases -- in
particular, when going through execute_fn_to_ui_file (or the _string
variant), timestamps won't be emitted. This could be fixed in those
functions, but it wasn't clear to me whether this is really desirable.
Note also that this changes the TUI to send gdb_stdlog to gdb_stderr.
I imagine that the previous use of gdb_stdout here was inadvertent.
(And in any case it probably doesn't matter.)
This changes the CLI logging code to avoid manual memory management
(to the extent possible) by using unique_ptr in a couple of spots.
This will come in handy in a later patch.
The CLI's set_logging logic seemed unnecessarily complicated to me.
This patch simplifies it, with an eye toward changing it to use RAII
objects in a subsequent patch.
I did not touch the corresponding MI code. That code seems incorrect
(nothing ever uses raw_stdlog, and nothing ever sets
saved_raw_stdlog). I didn't attempt to fix this, because I question
whether this is even useful for MI.
While working on function calls, I realized that the thread_fsm member
of struct thread_info is a raw pointer to a resource it owns. This
commit changes the type of the thread_fsm member to a std::unique_ptr in
order to signify this ownership relationship and slightly ease resource
management (no need to manually call delete).
To ensure consistent use, the field is made a private member
(m_thread_fsm). The setter method (set_thread_fsm) can then check
that it is incorrect to associate a FSM to a thread_info object if
another one is already in place. This is ensured by an assertion.
The function run_inferior_call takes an argument as a pointer to a
call_thread_fsm and installs it in it in a thread_info instance. Also
change this function's signature to accept a unique_ptr in order to
signify that the ownership of the call_thread_fsm is transferred during
the call.
No user visible change expected after this commit.
Tested on x86_64-linux with no regression observed.
Change-Id: Ia1224f72a4afa247801ce6650ce82f90224a9ae8
Extend the 'cli_suppress_notification' struct with a new field,
'normal_stop', that can be used for checking if printing normal stop
events on the CLI should be suppressed.
This patch only introduces the flag. The subsequent patch adds a user
command to turn the flag off/on.
This commit brings all the changes made by running gdb/copyright.py
as per GDB's Start of New Year Procedure.
For the avoidance of doubt, all changes in this commits were
performed by the script.
I don't find that the bpstat typedef, which hides a pointer, is
particularly useful. In fact, it confused me many times, and I just see
it as something to remember that adds cognitive load. Also, with C++,
we might want to be able to pass bpstats objects by const-reference, not
necessarily by pointer.
So, remove the bpstat typedef and rename struct bpstats to bpstat (since
it represents one bpstat, it makes sense that it is singular).
Change-Id: I52e763b6e54ee666a9e045785f686d37b4f5f849
Give a name to each observer, this will help produce more meaningful
debug message.
gdbsupport/ChangeLog:
* observable.h (class observable) <struct observer> <observer>:
Add name parameter.
<name>: New field.
<attach>: Add name parameter, update all callers.
Change-Id: Ie0cc4664925215b8d2b09e026011b7803549fba0
This patch addresses PR gdb/27133. Before it, the following succession
of commands would cause gdb to crash:
set logging redirect on
set logging debugredirect on
set logging on
The problem eventually comes down to a use after free. The function
cli_interp_base::set_logging is called with a unique_ptr argument that
holds a pointer to the redirection file. In the problematic use case,
no-one ever took ownership of that pointer (as far as unique_ptr is
concerned), so the call to its dtor at the end of the function causes
the file object to be deleted. Any later use of the pointer to the
redirection file is therefore an error.
This patch ensures that the unique_ptr is released when required (so it
does not assume ownership anymore). The internal logic of
cli_interp_base::set_logging takes care of freeing the ui_file when it
is not necessary anymore using the saved_output.file_to_delete field.
gdb/ChangeLog:
PR gdb/27133
* cli/cli-interp.c (cli_interp_base::set_logging): Ensure the
unique_ptr is released when the wrapped pointer is kept for later
use.
gdb/testsuite/ChangeLog:
PR gdb/27133
* gdb.base/ui-redirect.exp: Add test case that ensures that
redirecting both logging and debug does not cause gdb to crash.
This commits the result of running gdb/copyright.py as per our Start
of New Year procedure...
gdb/ChangeLog
Update copyright year range in copyright header of all GDB files.
Currently, when logging is enabled, output will be sent to both a
logfile and standard terminal output. The redirect option sends output
only to the logfile. This includes all debug output.
Add the option to redirect debug output seperately to normal
output, using the cli command:
set logging debugredirect on
By setting this and enabling logging, all output and debug will
be sent to the logfile. The user will still see all output but
no debug output.
This causes a change in behaviour for anyone currently using
logging redirect, as now only output will be redirected. Users
will have to issue the additional command above to also redirect
debug.
Expand ui-redirect.exp cover the changes.
gdb/ChangeLog:
* cli/cli-interp.c (struct saved_output_files): Add saved entry.
(cli_interp_base::set_logging): Check debug_redirect.
* cli/cli-interp.h (set_logging): Add debug_redirect parameter.
* cli/cli-logging.c (debug_redirect): Add static variable.
(pop_output_files): Add default param.
(handle_redirections): Print debug setting.
(show_logging_command): Likewise.
(_initialize_cli_logging): Add debugredirect command.
* interps.c (current_interp_set_logging): Add debug_redirect
parameter.
* interps.h (set_logging): Add debug_redirect parameter.
(current_interp_set_logging): Likewise.
* mi/mi-common.h: Likewise.
* mi/mi-interp.c (mi_interp::set_logging): Likewise.
gdb/testsuite/ChangeLog:
* gdb.base/ui-redirect.exp: Add debug redirect tests.
Instead of using two bools to decide if the files should close when tee_file
is closed, make file one stay open and file two close. This simplifies the
use cases for it.
Inline the make_logging_output into the calling functions (the logic here
looks ugly in order to simplify a later change).
Expand ui-redirect.exp to cover the changes, similar to mi-logging.exp.
gdb/ChangeLog:
* cli/cli-interp.c (cli_interp_base::set_logging): Create tee_file
directly.
* cli/cli-interp.h (make_logging_output): Remove declaration.
* cli/cli-logging.c (make_logging_output): Remove function.
* mi/mi-interp.c (mi_interp::set_logging): Create tee_file
directly.
* ui-file.c (tee_file::tee_file): Remove bools.
(tee_file::~tee_file): Remove deletes.
* ui-file.h (tee_file): Remove bools.
gdb/testsuite/ChangeLog:
* gdb.base/ui-redirect.exp: Test redirection.
This makes exception handling more efficient in a few spots, through
the use of const- and rvalue-references.
I wrote this patch by commenting out the gdb_exception copy
constructor and then examining the resulting error messages one by
one, introducing the use of std::move where appropriate.
gdb/ChangeLog
2019-04-25 Tom Tromey <tromey@adacore.com>
* xml-support.c (struct gdb_xml_parser) <set_error>: Take an
rvalue reference.
(gdb_xml_start_element_wrapper, gdb_xml_end_element_wrapper)
(gdb_xml_parser::parse): Use std::move.
* python/python-internal.h (gdbpy_convert_exception): Take a const
reference.
* python/py-value.c (valpy_getitem, valpy_nonzero): Use
std::move.
* python/py-utils.c (gdbpy_convert_exception): Take a const
reference.
* python/py-inferior.c (infpy_write_memory, infpy_search_memory):
Use std::move.
* python/py-breakpoint.c (bppy_set_condition, bppy_set_commands):
Use std::move.
* mi/mi-main.c (mi_print_exception): Take a const reference.
* main.c (handle_command_errors): Take a const reference.
* linespec.c (parse_linespec): Use std::move.
* infcall.c (run_inferior_call): Use std::move.
(call_function_by_hand_dummy): Use std::move.
* exec.c (try_open_exec_file): Use std::move.
* exceptions.h (exception_print, exception_fprintf)
(exception_print_same): Update.
* exceptions.c (print_exception, exception_print)
(exception_fprintf, exception_print_same): Change parameters to
const reference.
* event-top.c (gdb_rl_callback_read_char_wrapper): Update.
* common/new-op.c: Use std::move.
* common/common-exceptions.h (struct gdb_exception): Add move
constructor.
(struct gdb_exception_error, struct gdb_exception_quit, struct
gdb_quit_bad_alloc): Change constructor to move constructor.
(throw_exception): Change parameter to rvalue reference.
* common/common-exceptions.c (throw_exception): Take rvalue
reference.
* cli/cli-interp.c (safe_execute_command): Use std::move.
* breakpoint.c (insert_bp_location, location_to_sals): Use
std::move.
This rewrites gdb's TRY/CATCH to plain C++ try/catch. The patch was
largely written by script, though one change (to a comment in
common-exceptions.h) was reverted by hand.
gdb/ChangeLog
2019-04-08 Tom Tromey <tom@tromey.com>
* xml-support.c: Use C++ exception handling.
* x86-linux-nat.c: Use C++ exception handling.
* windows-nat.c: Use C++ exception handling.
* varobj.c: Use C++ exception handling.
* value.c: Use C++ exception handling.
* valprint.c: Use C++ exception handling.
* valops.c: Use C++ exception handling.
* unittests/parse-connection-spec-selftests.c: Use C++ exception
handling.
* unittests/cli-utils-selftests.c: Use C++ exception handling.
* typeprint.c: Use C++ exception handling.
* tui/tui.c: Use C++ exception handling.
* tracefile-tfile.c: Use C++ exception handling.
* top.c: Use C++ exception handling.
* thread.c: Use C++ exception handling.
* target.c: Use C++ exception handling.
* symmisc.c: Use C++ exception handling.
* symfile-mem.c: Use C++ exception handling.
* stack.c: Use C++ exception handling.
* sparc64-linux-tdep.c: Use C++ exception handling.
* solib.c: Use C++ exception handling.
* solib-svr4.c: Use C++ exception handling.
* solib-spu.c: Use C++ exception handling.
* solib-frv.c: Use C++ exception handling.
* solib-dsbt.c: Use C++ exception handling.
* selftest-arch.c: Use C++ exception handling.
* s390-tdep.c: Use C++ exception handling.
* rust-lang.c: Use C++ exception handling.
* rust-exp.y: Use C++ exception handling.
* rs6000-tdep.c: Use C++ exception handling.
* rs6000-aix-tdep.c: Use C++ exception handling.
* riscv-tdep.c: Use C++ exception handling.
* remote.c: Use C++ exception handling.
* remote-fileio.c: Use C++ exception handling.
* record-full.c: Use C++ exception handling.
* record-btrace.c: Use C++ exception handling.
* python/python.c: Use C++ exception handling.
* python/py-value.c: Use C++ exception handling.
* python/py-utils.c: Use C++ exception handling.
* python/py-unwind.c: Use C++ exception handling.
* python/py-type.c: Use C++ exception handling.
* python/py-symbol.c: Use C++ exception handling.
* python/py-record.c: Use C++ exception handling.
* python/py-record-btrace.c: Use C++ exception handling.
* python/py-progspace.c: Use C++ exception handling.
* python/py-prettyprint.c: Use C++ exception handling.
* python/py-param.c: Use C++ exception handling.
* python/py-objfile.c: Use C++ exception handling.
* python/py-linetable.c: Use C++ exception handling.
* python/py-lazy-string.c: Use C++ exception handling.
* python/py-infthread.c: Use C++ exception handling.
* python/py-inferior.c: Use C++ exception handling.
* python/py-gdb-readline.c: Use C++ exception handling.
* python/py-framefilter.c: Use C++ exception handling.
* python/py-frame.c: Use C++ exception handling.
* python/py-finishbreakpoint.c: Use C++ exception handling.
* python/py-cmd.c: Use C++ exception handling.
* python/py-breakpoint.c: Use C++ exception handling.
* python/py-arch.c: Use C++ exception handling.
* printcmd.c: Use C++ exception handling.
* ppc-linux-tdep.c: Use C++ exception handling.
* parse.c: Use C++ exception handling.
* p-valprint.c: Use C++ exception handling.
* objc-lang.c: Use C++ exception handling.
* mi/mi-main.c: Use C++ exception handling.
* mi/mi-interp.c: Use C++ exception handling.
* mi/mi-cmd-stack.c: Use C++ exception handling.
* mi/mi-cmd-break.c: Use C++ exception handling.
* main.c: Use C++ exception handling.
* linux-thread-db.c: Use C++ exception handling.
* linux-tdep.c: Use C++ exception handling.
* linux-nat.c: Use C++ exception handling.
* linux-fork.c: Use C++ exception handling.
* linespec.c: Use C++ exception handling.
* language.c: Use C++ exception handling.
* jit.c: Use C++ exception handling.
* infrun.c: Use C++ exception handling.
* infcmd.c: Use C++ exception handling.
* infcall.c: Use C++ exception handling.
* inf-loop.c: Use C++ exception handling.
* i386-tdep.c: Use C++ exception handling.
* i386-linux-tdep.c: Use C++ exception handling.
* guile/scm-value.c: Use C++ exception handling.
* guile/scm-type.c: Use C++ exception handling.
* guile/scm-symtab.c: Use C++ exception handling.
* guile/scm-symbol.c: Use C++ exception handling.
* guile/scm-pretty-print.c: Use C++ exception handling.
* guile/scm-ports.c: Use C++ exception handling.
* guile/scm-param.c: Use C++ exception handling.
* guile/scm-math.c: Use C++ exception handling.
* guile/scm-lazy-string.c: Use C++ exception handling.
* guile/scm-frame.c: Use C++ exception handling.
* guile/scm-disasm.c: Use C++ exception handling.
* guile/scm-cmd.c: Use C++ exception handling.
* guile/scm-breakpoint.c: Use C++ exception handling.
* guile/scm-block.c: Use C++ exception handling.
* guile/guile-internal.h: Use C++ exception handling.
* gnu-v3-abi.c: Use C++ exception handling.
* gdbtypes.c: Use C++ exception handling.
* frame.c: Use C++ exception handling.
* frame-unwind.c: Use C++ exception handling.
* fbsd-tdep.c: Use C++ exception handling.
* f-valprint.c: Use C++ exception handling.
* exec.c: Use C++ exception handling.
* event-top.c: Use C++ exception handling.
* event-loop.c: Use C++ exception handling.
* eval.c: Use C++ exception handling.
* dwarf2read.c: Use C++ exception handling.
* dwarf2loc.c: Use C++ exception handling.
* dwarf2-frame.c: Use C++ exception handling.
* dwarf2-frame-tailcall.c: Use C++ exception handling.
* dwarf-index-write.c: Use C++ exception handling.
* dwarf-index-cache.c: Use C++ exception handling.
* dtrace-probe.c: Use C++ exception handling.
* disasm-selftests.c: Use C++ exception handling.
* darwin-nat.c: Use C++ exception handling.
* cp-valprint.c: Use C++ exception handling.
* cp-support.c: Use C++ exception handling.
* cp-abi.c: Use C++ exception handling.
* corelow.c: Use C++ exception handling.
* completer.c: Use C++ exception handling.
* compile/compile-object-run.c: Use C++ exception handling.
* compile/compile-object-load.c: Use C++ exception handling.
* compile/compile-cplus-symbols.c: Use C++ exception handling.
* compile/compile-c-symbols.c: Use C++ exception handling.
* common/selftest.c: Use C++ exception handling.
* common/new-op.c: Use C++ exception handling.
* cli/cli-script.c: Use C++ exception handling.
* cli/cli-interp.c: Use C++ exception handling.
* cli/cli-cmds.c: Use C++ exception handling.
* c-varobj.c: Use C++ exception handling.
* btrace.c: Use C++ exception handling.
* breakpoint.c: Use C++ exception handling.
* break-catch-throw.c: Use C++ exception handling.
* arch-utils.c: Use C++ exception handling.
* amd64-tdep.c: Use C++ exception handling.
* ada-valprint.c: Use C++ exception handling.
* ada-typeprint.c: Use C++ exception handling.
* ada-lang.c: Use C++ exception handling.
* aarch64-tdep.c: Use C++ exception handling.
gdb/gdbserver/ChangeLog
2019-04-08 Tom Tromey <tom@tromey.com>
* server.c: Use C++ exception handling.
* linux-low.c: Use C++ exception handling.
* gdbreplay.c: Use C++ exception handling.
This commit applies all changes made after running the gdb/copyright.py
script.
Note that one file was flagged by the script, due to an invalid
copyright header
(gdb/unittests/basic_string_view/element_access/char/empty.cc).
As the file was copied from GCC's libstdc++-v3 testsuite, this commit
leaves this file untouched for the time being; a patch to fix the header
was sent to gcc-patches first.
gdb/ChangeLog:
Update copyright year range in all GDB files.
With a following patch, find_thread_ptid will first find the inferior
for the passed-in ptid, using find_inferior_pid, and then look for the
thread in that inferior's thread list. If we pass down null_ptid to
find_thread_ptid then that means we'll end up passing 0 to
find_inferior_pid, which hits this assertion:
> struct inferior *
> find_inferior_pid (int pid)
> {
> struct inferior *inf;
>
> /* Looking for inferior pid == 0 is always wrong, and indicative of
> a bug somewhere else. There may be more than one with pid == 0,
> for instance. */
> gdb_assert (pid != 0);
This patch prepares for the change, by avoiding passing down null_ptid
to find_thread_ptid or to functions that naturally use it, such as the
target_pid_to_str call in inferior.c:add_inferior. In that latter
case, the patch changes GDB output,
from:
(gdb) add-inferior
[New inferior 2 (process 0)]
to:
(gdb) add-inferior
[New inferior 2]
which seems like a good change to me. It might not even make sense to
talk about "process" for the current target, for example.
The python_on_normal_stop change ends up avoiding looking up the
same thread twice (inferior_thread also does a look up).
gdb/ChangeLog:
2018-11-22 Pedro Alves <palves@redhat.com>
* cli/cli-interp.c (cli_on_user_selected_context_changed): Use
inferior_thread instead of find_thread_ptid, and only when
inferior_ptid is not null_ptid.
* inferior.c (add_inferior): Don't include target_pid_to_str
output when the inferior is not started.
* python/py-inferior.c (python_on_normal_stop): Don't use
find_thread_ptid.
(tui_on_user_selected_context_changed): Use inferior_thread
instead of find_thread_ptid, and only when inferior_ptid is not
null_ptid.
This commit fixes a resource leak found by Coverity, where cli_interp's
constructor creates a new cli_ui_out, but there was no corresponding
destructor to free it.
gdb/ChangeLog:
* cli/cli-interp.c (cli_interp::~cli_interp): New function.
This is more preparation bits for multi-target support.
In a multi-target scenario, we need to address the case of different
processes/threads running on different targets that happen to have the
same PID/PTID. E.g., we can have both process 123 in target 1, and
process 123 in target 2, while they're in reality different processes
running on different machines. Or maybe we've loaded multiple
instances of the same core file. Etc.
To address this, in my WIP multi-target branch, threads and processes
are uniquely identified by the (process_stratum target_ops *, ptid_t)
and (process_stratum target_ops *, pid) tuples respectively. I.e.,
each process_stratum instance has its own thread/process number space.
As you can imagine, that requires passing around target_ops * pointers
in a number of functions where we're currently passing only a ptid_t
or an int. E.g., when we look up a thread_info object by ptid_t in
find_thread_ptid, the ptid_t alone isn't sufficient.
In many cases though, we already have the thread_info or inferior
pointer handy, but we "lose" it somewhere along the call stack, only
to look it up again by ptid_t/pid. Since thread_info or inferior
objects know their parent target, if we pass around thread_info or
inferior pointers when possible, we avoid having to add extra
target_ops parameters to many functions, and also, we eliminate a
number of by ptid_t/int lookups.
So that's what this patch does. In a bit more detail:
- Changes a number of functions and methods to take a thread_info or
inferior pointer instead of a ptid_t or int parameter.
- Changes a number of structure fields from ptid_t/int to inferior or
thread_info pointers.
- Uses the inferior_thread() function whenever possible instead of
inferior_ptid.
- Uses thread_info pointers directly when possible instead of the
is_running/is_stopped etc. routines that require a lookup.
- A number of functions are eliminated along the way, such as:
int valid_gdb_inferior_id (int num);
int pid_to_gdb_inferior_id (int pid);
int gdb_inferior_id_to_pid (int num);
int in_inferior_list (int pid);
- A few structures and places hold a thread_info pointer across
inferior execution, so now they take a strong reference to the
(refcounted) thread_info object to avoid the thread_info pointer
getting stale. This is done in enable_thread_stack_temporaries and
in the infcall.c code.
- Related, there's a spot in infcall.c where using a RAII object to
handle the refcount would be handy, so a gdb::ref_ptr specialization
for thread_info is added (thread_info_ref, in gdbthread.h), along
with a gdb_ref_ptr policy that works for all refcounted_object types
(in common/refcounted-object.h).
gdb/ChangeLog:
2018-06-21 Pedro Alves <palves@redhat.com>
* ada-lang.h (ada_get_task_number): Take a thread_info pointer
instead of a ptid_t. All callers adjusted.
* ada-tasks.c (ada_get_task_number): Likewise. All callers
adjusted.
(print_ada_task_info, display_current_task_id, task_command_1):
Adjust.
* breakpoint.c (watchpoint_in_thread_scope): Adjust to use
inferior_thread.
(breakpoint_kind): Adjust.
(remove_breakpoints_pid): Rename to ...
(remove_breakpoints_inf): ... this. Adjust to take an inferior
pointer. All callers adjusted.
(bpstat_clear_actions): Use inferior_thread.
(get_bpstat_thread): New.
(bpstat_do_actions): Use it.
(bpstat_check_breakpoint_conditions, bpstat_stop_status): Adjust
to take a thread_info pointer. All callers adjusted.
(set_longjmp_breakpoint_for_call_dummy, set_momentary_breakpoint)
(breakpoint_re_set_thread): Use inferior_thread.
* breakpoint.h (struct inferior): Forward declare.
(bpstat_stop_status): Update.
(remove_breakpoints_pid): Delete.
(remove_breakpoints_inf): New.
* bsd-uthread.c (bsd_uthread_target::wait)
(bsd_uthread_target::update_thread_list): Use find_thread_ptid.
* btrace.c (btrace_add_pc, btrace_enable, btrace_fetch)
(maint_btrace_packet_history_cmd)
(maint_btrace_clear_packet_history_cmd): Adjust.
(maint_btrace_clear_cmd, maint_info_btrace_cmd): Adjust to use
inferior_thread.
* cli/cli-interp.c: Include "inferior.h".
* common/refcounted-object.h (struct
refcounted_object_ref_policy): New.
* compile/compile-object-load.c: Include gdbthread.h.
(store_regs): Use inferior_thread.
* corelow.c (core_target::close): Use current_inferior.
(core_target_open): Adjust to use first_thread_of_inferior and use
the current inferior.
* ctf.c (ctf_target::close): Adjust to use current_inferior.
* dummy-frame.c (dummy_frame_id) <ptid>: Delete, replaced by ...
<thread>: ... this new field. All references adjusted.
(dummy_frame_pop, dummy_frame_discard, register_dummy_frame_dtor):
Take a thread_info pointer instead of a ptid_t.
* dummy-frame.h (dummy_frame_push, dummy_frame_pop)
(dummy_frame_discard, register_dummy_frame_dtor): Take a
thread_info pointer instead of a ptid_t.
* elfread.c: Include "inferior.h".
(elf_gnu_ifunc_resolver_stop, elf_gnu_ifunc_resolver_return_stop):
Use inferior_thread.
* eval.c (evaluate_subexp): Likewise.
* frame.c (frame_pop, has_stack_frames, find_frame_sal): Use
inferior_thread.
* gdb_proc_service.h (struct thread_info): Forward declare.
(struct ps_prochandle) <ptid>: Delete, replaced by ...
<thread>: ... this new field. All references adjusted.
* gdbarch.h, gdbarch.c: Regenerate.
* gdbarch.sh (get_syscall_number): Replace 'ptid' parameter with a
'thread' parameter. All implementations and callers adjusted.
* gdbthread.h (thread_info) <set_running>: New method.
(delete_thread, delete_thread_silent): Take a thread_info pointer
instead of a ptid.
(global_thread_id_to_ptid, ptid_to_global_thread_id): Delete.
(first_thread_of_process): Delete, replaced by ...
(first_thread_of_inferior): ... this new function. All callers
adjusted.
(any_live_thread_of_process): Delete, replaced by ...
(any_live_thread_of_inferior): ... this new function. All callers
adjusted.
(switch_to_thread, switch_to_no_thread): Declare.
(is_executing): Delete.
(enable_thread_stack_temporaries): Update comment.
<enable_thread_stack_temporaries>: Take a thread_info pointer
instead of a ptid_t. Incref the thread.
<~enable_thread_stack_temporaries>: Decref the thread.
<m_ptid>: Delete
<m_thr>: New.
(thread_stack_temporaries_enabled_p, push_thread_stack_temporary)
(get_last_thread_stack_temporary)
(value_in_thread_stack_temporaries, can_access_registers_thread):
Take a thread_info pointer instead of a ptid_t. All callers
adjusted.
* infcall.c (get_call_return_value): Use inferior_thread.
(run_inferior_call): Work with thread pointers instead of ptid_t.
(call_function_by_hand_dummy): Work with thread pointers instead
of ptid_t. Use thread_info_ref.
* infcmd.c (proceed_thread_callback): Access thread's state
directly.
(ensure_valid_thread, ensure_not_running): Use inferior_thread,
access thread's state directly.
(continue_command): Use inferior_thread.
(info_program_command): Use find_thread_ptid and access thread
state directly.
(proceed_after_attach_callback): Use thread state directly.
(notice_new_inferior): Take a thread_info pointer instead of a
ptid_t. All callers adjusted.
(exit_inferior): Take an inferior pointer instead of a pid. All
callers adjusted.
(exit_inferior_silent): New.
(detach_inferior): Delete.
(valid_gdb_inferior_id, pid_to_gdb_inferior_id)
(gdb_inferior_id_to_pid, in_inferior_list): Delete.
(detach_inferior_command, kill_inferior_command): Use
find_inferior_id instead of valid_gdb_inferior_id and
gdb_inferior_id_to_pid.
(inferior_command): Use inferior and thread pointers.
* inferior.h (struct thread_info): Forward declare.
(notice_new_inferior): Take a thread_info pointer instead of a
ptid_t. All callers adjusted.
(detach_inferior): Delete declaration.
(exit_inferior, exit_inferior_silent): Take an inferior pointer
instead of a pid. All callers adjusted.
(gdb_inferior_id_to_pid, pid_to_gdb_inferior_id, in_inferior_list)
(valid_gdb_inferior_id): Delete.
* infrun.c (follow_fork_inferior, proceed_after_vfork_done)
(handle_vfork_child_exec_or_exit, follow_exec): Adjust.
(struct displaced_step_inferior_state) <pid>: Delete, replaced by
...
<inf>: ... this new field.
<step_ptid>: Delete, replaced by ...
<step_thread>: ... this new field.
(get_displaced_stepping_state): Take an inferior pointer instead
of a pid. All callers adjusted.
(displaced_step_in_progress_any_inferior): Adjust.
(displaced_step_in_progress_thread): Take a thread pointer instead
of a ptid_t. All callers adjusted.
(displaced_step_in_progress, add_displaced_stepping_state): Take
an inferior pointer instead of a pid. All callers adjusted.
(get_displaced_step_closure_by_addr): Adjust.
(remove_displaced_stepping_state): Take an inferior pointer
instead of a pid. All callers adjusted.
(displaced_step_prepare_throw, displaced_step_prepare)
(displaced_step_fixup): Take a thread pointer instead of a ptid_t.
All callers adjusted.
(start_step_over): Adjust.
(infrun_thread_ptid_changed): Remove bit updating ptids in the
displaced step queue.
(do_target_resume): Adjust.
(fetch_inferior_event): Use inferior_thread.
(context_switch, get_inferior_stop_soon): Take an
execution_control_state pointer instead of a ptid_t. All callers
adjusted.
(switch_to_thread_cleanup): Delete.
(stop_all_threads): Use scoped_restore_current_thread.
* inline-frame.c: Include "gdbthread.h".
(inline_state) <inline_state>: Take a thread pointer instead of a
ptid_t. All callers adjusted.
<ptid>: Delete, replaced by ...
<thread>: ... this new field.
(find_inline_frame_state): Take a thread pointer instead of a
ptid_t. All callers adjusted.
(skip_inline_frames, step_into_inline_frame)
(inline_skipped_frames, inline_skipped_symbol): Take a thread
pointer instead of a ptid_t. All callers adjusted.
* inline-frame.h (skip_inline_frames, step_into_inline_frame)
(inline_skipped_frames, inline_skipped_symbol): Likewise.
* linux-fork.c (delete_checkpoint_command): Adjust to use thread
pointers directly.
* linux-nat.c (get_detach_signal): Likewise.
* linux-thread-db.c (thread_from_lwp): New 'stopped' parameter.
(thread_db_notice_clone): Adjust.
(thread_db_find_new_threads_silently)
(thread_db_find_new_threads_2, thread_db_find_new_threads_1): Take
a thread pointer instead of a ptid_t. All callers adjusted.
* mi/mi-cmd-var.c: Include "inferior.h".
(mi_cmd_var_update_iter): Update to use thread pointers.
* mi/mi-interp.c (mi_new_thread): Update to use the thread's
inferior directly.
(mi_output_running_pid, mi_inferior_count): Delete, bits factored
out to ...
(mi_output_running): ... this new function.
(mi_on_resume_1): Adjust to use it.
(mi_user_selected_context_changed): Adjust to use inferior_thread.
* mi/mi-main.c (proceed_thread): Adjust to use thread pointers
directly.
(interrupt_thread_callback): : Adjust to use thread and inferior
pointers.
* proc-service.c: Include "gdbthread.h".
(ps_pglobal_lookup): Adjust to use the thread's inferior directly.
* progspace-and-thread.c: Include "inferior.h".
* progspace.c: Include "inferior.h".
* python/py-exitedevent.c (create_exited_event_object): Adjust to
hold a reference to an inferior_object.
* python/py-finishbreakpoint.c (bpfinishpy_init): Adjust to use
inferior_thread.
* python/py-inferior.c (struct inferior_object): Give the type a
tag name instead of a typedef.
(python_on_normal_stop): No need to check if the current thread is
listed.
(inferior_to_inferior_object): Change return type to
inferior_object. All callers adjusted.
(find_thread_object): Delete, bits factored out to ...
(thread_to_thread_object): ... this new function.
* python/py-infthread.c (create_thread_object): Use
inferior_to_inferior_object.
(thpy_is_stopped): Use thread pointer directly.
(gdbpy_selected_thread): Use inferior_thread.
* python/py-record-btrace.c (btpy_list_object) <ptid>: Delete
field, replaced with ...
<thread>: ... this new field. All users adjusted.
(btpy_insn_or_gap_new): Drop const.
(btpy_list_new): Take a thread pointer instead of a ptid_t. All
callers adjusted.
* python/py-record.c: Include "gdbthread.h".
(recpy_insn_new, recpy_func_new): Take a thread pointer instead of
a ptid_t. All callers adjusted.
(gdbpy_current_recording): Use inferior_thread.
* python/py-record.h (recpy_record_object) <ptid>: Delete
field, replaced with ...
<thread>: ... this new field. All users adjusted.
(recpy_element_object) <ptid>: Delete
field, replaced with ...
<thread>: ... this new field. All users adjusted.
(recpy_insn_new, recpy_func_new): Take a thread pointer instead of
a ptid_t. All callers adjusted.
* python/py-threadevent.c: Include "gdbthread.h".
(get_event_thread): Use thread_to_thread_object.
* python/python-internal.h (struct inferior_object): Forward
declare.
(find_thread_object, find_inferior_object): Delete declarations.
(thread_to_thread_object, inferior_to_inferior_object): New
declarations.
* record-btrace.c: Include "inferior.h".
(require_btrace_thread): Use inferior_thread.
(record_btrace_frame_sniffer)
(record_btrace_tailcall_frame_sniffer): Use inferior_thread.
(get_thread_current_frame): Use scoped_restore_current_thread and
switch_to_thread.
(get_thread_current_frame): Use thread pointer directly.
(record_btrace_replay_at_breakpoint): Use thread's inferior
pointer directly.
* record-full.c: Include "inferior.h".
* regcache.c: Include "gdbthread.h".
(get_thread_arch_regcache): Use the inferior's address space
directly.
(get_thread_regcache, registers_changed_thread): New.
* regcache.h (get_thread_regcache(thread_info *thread)): New
overload.
(registers_changed_thread): New.
(remote_target) <remote_detach_1>: Swap order of parameters.
(remote_add_thread): <remote_add_thread>: Return the new thread.
(get_remote_thread_info(ptid_t)): New overload.
(remote_target::remote_notice_new_inferior): Use thread pointers
directly.
(remote_target::process_initial_stop_replies): Use
thread_info::set_running.
(remote_target::remote_detach_1, remote_target::detach)
(extended_remote_target::detach): Adjust.
* stack.c (frame_show_address): Use inferior_thread.
* target-debug.h (target_debug_print_thread_info_pp): New.
* target-delegates.c: Regenerate.
* target.c (default_thread_address_space): Delete.
(memory_xfer_partial_1): Use current_inferior.
(target_detach): Use current_inferior.
(target_thread_address_space): Delete.
(generic_mourn_inferior): Use current_inferior.
* target.h (struct target_ops) <thread_address_space>: Delete.
(target_thread_address_space): Delete.
* thread.c (init_thread_list): Use ALL_THREADS_SAFE. Use thread
pointers directly.
(delete_thread_1, delete_thread, delete_thread_silent): Take a
thread pointer instead of a ptid_t. Adjust all callers.
(ptid_to_global_thread_id, global_thread_id_to_ptid): Delete.
(first_thread_of_process): Delete, replaced by ...
(first_thread_of_inferior): ... this new function. All callers
adjusted.
(any_thread_of_process): Rename to ...
(any_thread_of_inferior): ... this, and take an inferior pointer.
(any_live_thread_of_process): Rename to ...
(any_live_thread_of_inferior): ... this, and take an inferior
pointer.
(thread_stack_temporaries_enabled_p, push_thread_stack_temporary)
(value_in_thread_stack_temporaries)
(get_last_thread_stack_temporary): Take a thread pointer instead
of a ptid_t. Adjust all callers.
(thread_info::set_running): New.
(validate_registers_access): Use inferior_thread.
(can_access_registers_ptid): Rename to ...
(can_access_registers_thread): ... this, and take a thread
pointer.
(print_thread_info_1): Adjust to compare thread pointers instead
of ptids.
(switch_to_no_thread, switch_to_thread): Make extern.
(scoped_restore_current_thread::~scoped_restore_current_thread):
Use m_thread pointer directly.
(scoped_restore_current_thread::scoped_restore_current_thread):
Use inferior_thread.
(thread_command): Use thread pointer directly.
(thread_num_make_value_helper): Use inferior_thread.
* top.c (execute_command): Use inferior_thread.
* tui/tui-interp.c: Include "inferior.h".
* varobj.c (varobj_create): Use inferior_thread.
(value_of_root_1): Use find_thread_global_id instead of
global_thread_id_to_ptid.
This changes the various as_*_interp functions to be implemented using
dynamic_cast. I believe this is a small improvement, because it is
more typesafe -- the C++ runtime does the type-checking for us.
ChangeLog
2018-05-25 Tom Tromey <tom@tromey.com>
* tui/tui-interp.c (as_tui_interp): Use dynamic_cast.
* mi/mi-interp.c (as_mi_interp): Use dynamic_cast.
* cli/cli-interp.c (as_cli_interp): Use dynamic_cast.
While looking through the "interp" code I found a couple of spots that
could use scoped_restore.
ChangeLog
2018-05-25 Tom Tromey <tom@tromey.com>
* cli/cli-interp.c (safe_execute_command): Use scoped_restore.
* interps.c (interp_exec): Use scoped_restore.
This converts observers from using a special source-generating script
to be plain C++. This version of the patch takes advantage of C++11
by using std::function and variadic templates; incorporates Pedro's
patches; and renames the header file to "observable.h" (this change
eliminates the need for a clean rebuild).
Note that Pedro's patches used a template lambda in tui-hooks.c, but
this failed to compile on some buildbot instances (presumably due to
differing C++ versions); I replaced this with an ordinary template
function.
Regression tested on the buildbot.
gdb/ChangeLog
2018-03-19 Pedro Alves <palves@redhat.com>
Tom Tromey <tom@tromey.com>
* unittests/observable-selftests.c: New file.
* common/observable.h: New file.
* observable.h: New file.
* ada-lang.c, ada-tasks.c, agent.c, aix-thread.c, annotate.c,
arm-tdep.c, auto-load.c, auxv.c, break-catch-syscall.c,
breakpoint.c, bsd-uthread.c, cli/cli-interp.c, cli/cli-setshow.c,
corefile.c, dummy-frame.c, event-loop.c, event-top.c, exec.c,
extension.c, frame.c, gdbarch.c, guile/scm-breakpoint.c,
infcall.c, infcmd.c, inferior.c, inflow.c, infrun.c, jit.c,
linux-tdep.c, linux-thread-db.c, m68klinux-tdep.c,
mi/mi-cmd-break.c, mi/mi-interp.c, mi/mi-main.c, objfiles.c,
ppc-linux-nat.c, ppc-linux-tdep.c, printcmd.c, procfs.c,
python/py-breakpoint.c, python/py-finishbreakpoint.c,
python/py-inferior.c, python/py-unwind.c, ravenscar-thread.c,
record-btrace.c, record-full.c, record.c, regcache.c, remote.c,
riscv-tdep.c, sol-thread.c, solib-aix.c, solib-spu.c, solib.c,
spu-multiarch.c, spu-tdep.c, stack.c, symfile-mem.c, symfile.c,
symtab.c, thread.c, top.c, tracepoint.c, tui/tui-hooks.c,
tui/tui-interp.c, valops.c: Update all users.
* tui/tui-hooks.c (tui_bp_created_observer)
(tui_bp_deleted_observer, tui_bp_modified_observer)
(tui_inferior_exit_observer, tui_before_prompt_observer)
(tui_normal_stop_observer, tui_register_changed_observer):
Remove.
(tui_observers_token): New global.
(attach_or_detach, tui_attach_detach_observers): New functions.
(tui_install_hooks, tui_remove_hooks): Use
tui_attach_detach_observers.
* record-btrace.c (record_btrace_thread_observer): Remove.
(record_btrace_thread_observer_token): New global.
* observer.sh: Remove.
* observer.c: Rename to observable.c.
* observable.c (namespace gdb_observers): Define new objects.
(observer_debug): Move into gdb_observers namespace.
(struct observer, struct observer_list, xalloc_observer_list_node)
(xfree_observer_list_node, generic_observer_attach)
(generic_observer_detach, generic_observer_notify): Remove.
(_initialize_observer): Update.
Don't include observer.inc.
* Makefile.in (generated_files): Remove observer.h, observer.inc.
(clean mostlyclean): Likewise.
(observer.h, observer.inc): Remove targets.
(SUBDIR_UNITTESTS_SRCS): Add observable-selftests.c.
(COMMON_SFILES): Use observable.c, not observer.c.
* .gitignore: Remove observer.h.
gdb/doc/ChangeLog
2018-03-19 Tom Tromey <tom@tromey.com>
* observer.texi: Remove.
gdb/testsuite/ChangeLog
2018-03-19 Tom Tromey <tom@tromey.com>
* gdb.gdb/observer.exp: Remove.
- The interp->data field disappears, since we can put data in the
interpreter directly now. The "init" method remains in place, but
it now returns void.
- A few places check if the interpreter method is NULL before calling
it, and also check whether the method returns true/false. For some
of those methods, all current implementations always return true.
In those cases, this commit makes the C++-fied method return void
instead and cleans up the callers.
Tested on x86_64 Fedora 23.
gdb/ChangeLog:
2017-02-03 Pedro Alves <palves@redhat.com>
* cli/cli-interp.c (cli_interp_base::cli_interp_base)
(cli_interp_base::~cli_interp_base): New.
(cli_interp): New struct.
(as_cli_interp): Cast the interp itself to cli_interp.
(cli_interpreter_pre_command_loop): Rename to ...
(cli_interp_base::pre_command_loop): ... this. Remove 'self'
parameter.
(cli_interpreter_init): Rename to ...
(cli_interp::init): ... this. Remove 'self' parameter. Use
boolean. Make extern.
(cli_interpreter_resume): Rename to ...
(cli_interp::resume): ... this. Remove 'data' parameter. Make
extern.
(cli_interpreter_suspend): Rename to ...
(cli_interp::suspend): ... this. Remove 'data' parameter. Make
extern.
(cli_interpreter_exec): Rename to ...
(cli_interp::exec): ... this. Remove 'data' parameter. Make
extern.
(cli_interpreter_supports_command_editing): Rename to ...
(cli_interp_base::supports_command_editing): ... this. Remove
'interp' parameter. Make extern.
(cli_ui_out): Rename to ...
(cli_interp::interp_ui_out): ... this. Remove 'interp' parameter.
Make extern.
(cli_set_logging): Rename to ...
(cli_interp_base::set_logging): ... this. Remove 'interp'
parameter. Make extern.
(cli_interp_procs): Delete.
(cli_interp_factory): Adjust to use "new".
* cli/cli-interp.h: Include "interps.h".
(struct cli_interp_base): New struct.
* interps.c (struct interp): Delete. Fields moved to interps.h.
(interp_new): Delete.
(interp::interp, interp::~interp): New.
(interp_set): Use bool, and return void. Assume the interpreter
has suspend, init and resume methods, and that the all return
void.
(set_top_level_interpreter): interp_set returns void.
(interp_ui_out): Adapt.
(current_interp_set_logging): Adapt.
(interp_data): Delete.
(interp_pre_command_loop, interp_supports_command_editing): Adapt.
(interp_exec): Adapt.
(top_level_interpreter_data): Delete.
* interps.h (interp_init_ftype, interp_resume_ftype)
(interp_suspend_ftype, interp_exec_ftype)
(interp_pre_command_loop_ftype, interp_ui_out_ftype): Delete.
(class interp): New.
(interp_new): Delete.
(interp_set): Now returns void. Use bool.
(interp_data, top_level_interpreter_data): Delete.
* mi/mi-common.h: Include interps.h.
(class mi_interp): Inherit from interp. Define a ctor. Declare
init, resume, suspect, exec, interp_ui_out, set_logging and
pre_command_loop methods.
* mi/mi-interp.c (as_mi_interp): Cast the interp itself.
(mi_interpreter_init): Rename to ...
(mi_interp::init): ... this. Remove the 'interp' parameter, use
bool, return void and make extern. Adjust.
(mi_interpreter_resume): ... Rename to ...
(mi_interp::resume): ... this. Remove the 'data' parameter,
return void and make extern. Adjust.
(mi_interpreter_suspend): ... Rename to ...
(mi_interp::suspend): ... this. Remove the 'data' parameter,
return void and make extern. Adjust.
(mi_interpreter_exec): ... Rename to ...
(mi_interp::exec): ... this. Remove the 'data' parameter and make
extern. Adjust.
(mi_interpreter_pre_command_loop): ... Rename to ...
(mi_interp::pre_command_loop): ... this. Remove the 'self'
parameter and make extern.
(mi_on_normal_stop_1): Adjust.
(mi_ui_out): Rename to ...
(mi_interp::interp_ui_out): ... this. Remove the 'interp'
parameter and make extern. Adjust.
(mi_set_logging): Rename to ...
(mi_interp::set_logging): ... this. Remove the 'interp'
parameter and make extern. Adjust.
(mi_interp_procs): Delete.
(mi_interp_factory): Adjust to use 'new'.
* mi/mi-main.c (mi_cmd_gdb_exit, captured_mi_execute_command)
(mi_print_exception, mi_execute_command, mi_load_progress):
Adjust.
* tui/tui-interp.c (tui_interp): New class.
(as_tui_interp): Return a tui_interp pointer.
(tui_on_normal_stop, tui_on_signal_received)
(tui_on_end_stepping_range, tui_on_signal_exited, tui_on_exited)
(tui_on_no_history, tui_on_user_selected_context_changed): Adjust
to use interp::interp_ui_out.
(tui_init): Rename to ...
(tui_interp::init): ... this. Remove the 'self' parameter, use
bool, return void and make extern. Adjust.
(tui_resume): Rename to ...
(tui_interp::resume): ... this. Remove the 'data' parameter,
return void and make extern. Adjust.
(tui_suspend): Rename to ...
(tui_interp::suspend): ... this. Remove the 'data' parameter,
return void and make extern. Adjust.
(tui_ui_out): Rename to ...
(tui_interp::interp_ui_out): ... this. Remove the 'self'
parameter, and make extern. Adjust.
(tui_exec): Rename to ...
(tui_interp::exec): ... this. Remove the 'data' parameter and
make extern.
(tui_interp_procs): Delete.
(tui_interp_factory): Use "new".
This patch gets rid of this hack in mi_set_logging:
/* The tee created already is based on gdb_stdout, which for MI
is a console and so we end up in an infinite loop of console
writing to ui_file writing to console etc. So discard the
existing tee (it hasn't been used yet, and MI won't ever use
it), and create one based on raw_stdout instead. */
By pushing down responsibility for the tee creation to the
interpreter. I.e., pushing the CLI bits out of handle_redirections
down to the CLI interpreter's set_logging_proc method.
This fixes a few leaks that I spotted, and then confirmed with
"valgrind --leak-check=full":
[...]
==21429== 56 (32 direct, 24 indirect) bytes in 1 blocks are definitely lost in loss record 30,243 of 34,980
==21429== at 0x4C29216: operator new(unsigned long) (vg_replace_malloc.c:334)
==21429== by 0x62D9A9: mi_set_logging(interp*, int, ui_file*, ui_file*) (mi-interp.c:1395)
==21429== by 0x810B8A: current_interp_set_logging(int, ui_file*, ui_file*) (interps.c:360)
==21429== by 0x61C537: handle_redirections(int) (cli-logging.c:162)
==21429== by 0x61C6EC: set_logging_on(char*, int) (cli-logging.c:190)
==21429== by 0x6163BE: do_cfunc(cmd_list_element*, char*, int) (cli-decode.c:105)
==21429== by 0x6193C1: cmd_func(cmd_list_element*, char*, int) (cli-decode.c:1913)
==21429== by 0x8DB790: execute_command(char*, int) (top.c:674)
==21429== by 0x632AE6: mi_execute_cli_command(char const*, int, char const*) (mi-main.c:2343)
==21429== by 0x6329BA: mi_cmd_execute(mi_parse*) (mi-main.c:2306)
==21429== by 0x631E19: captured_mi_execute_command(ui_out*, mi_parse*) (mi-main.c:1998)
==21429== by 0x632389: mi_execute_command(char const*, int) (mi-main.c:2163)
==21429==
[...]
==26635== 24 bytes in 1 blocks are definitely lost in loss record 20,740 of 34,995
==26635== at 0x4C29216: operator new(unsigned long) (vg_replace_malloc.c:334)
==26635== by 0x61C355: handle_redirections(int) (cli-logging.c:131)
==26635== by 0x61C6EC: set_logging_on(char*, int) (cli-logging.c:190)
==26635== by 0x6163BE: do_cfunc(cmd_list_element*, char*, int) (cli-decode.c:105)
==26635== by 0x6193C1: cmd_func(cmd_list_element*, char*, int) (cli-decode.c:1913)
==26635== by 0x8DB7BC: execute_command(char*, int) (top.c:674)
==26635== by 0x7B9132: command_handler(char*) (event-top.c:590)
==26635== by 0x7B94F7: command_line_handler(char*) (event-top.c:780)
==26635== by 0x7B8ABB: gdb_rl_callback_handler(char*) (event-top.c:213)
==26635== by 0x933CE9: rl_callback_read_char (callback.c:220)
==26635== by 0x7B89ED: gdb_rl_callback_read_char_wrapper_noexcept() (event-top.c:175)
==26635== by 0x7B8A49: gdb_rl_callback_read_char_wrapper(void*) (event-top.c:192)
One is fixed by transfering ownership of the log file to the tee. In
pseudo-patch, since the code was moved at the same time:
- out = new tee_file (curr_output, false, logfile.get (), false);
+ out = new tee_file (curr_output, false, logfile.get (), true);
The other is this bit in mi_set_logging:
else
{
+ delete mi->raw_stdout;
I tried to split the leak fixes to a smaller preparatory patch, but
that was difficult exactly because of the tee hack in
handle_redirections -> mi_set_logging.
gdb/ChangeLog:
2017-02-02 Pedro Alves <palves@redhat.com>
* cli/cli-interp.c (struct saved_output_files, saved_output):
Moved from cli/cli-logging.c.
(cli_set_logging): New function.
(cli_interp_procs): Install cli_set_logging.
* cli/cli-interp.h (make_logging_output, cli_set_logging):
Declare.
* cli/cli-logging.c (struct saved_output_files, saved_output):
Moved to cli/cli-interp.c.
(pop_output_files): Don't save outputs here.
(make_logging_output): New function.
(handle_redirections): Don't build tee nor save previous outputs
here.
* interps.c (current_interp_set_logging): Change prototype.
Assume there's always a set_logging_proc method installed.
* interps.h (interp_set_logging_ftype): Change prototype.
(current_interp_set_logging): Change prototype and adjust comment.
* mi/mi-interp.c (mi_set_logging): Change protototype. Adjust to
use make_logging_output.
* tui/tui-interp.c (tui_interp_procs): Install cli_set_logging.
This applies the second part of GDB's End of Year Procedure, which
updates the copyright year range in all of GDB's files.
gdb/ChangeLog:
Update copyright year range in all GDB files.
This removes make_cleanup_restore_current_ui by converting the last
use. The last use was in a few functions used to iterate over all
UIs. This patch replaces these functions with a class, and arranges
for the class destructor to do the needed cleanup.
2016-10-21 Tom Tromey <tom@tromey.com>
* tui/tui-interp.c (tui_on_normal_stop, tui_on_signal_received)
(tui_on_end_stepping_range, tui_on_signal_exited, tui_on_exited)
(tui_on_no_history, tui_on_user_selected_context_changed):
Update.
* top.h (switch_thru_all_uis): New class.
(SWITCH_THRU_ALL_UIS): Rewrite.
(make_cleanup_restore_current_ui, switch_thru_all_uis_init)
(switch_thru_all_uis_cond, switch_thru_all_uis_next): Don't
declare.
* mi/mi-interp.c (mi_new_thread, mi_thread_exit)
(mi_record_changed, mi_inferior_added, mi_inferior_appeared)
(mi_inferior_exit, mi_inferior_removed, mi_on_signal_received)
(mi_on_end_stepping_range, mi_on_signal_exited, mi_on_exited)
(mi_on_no_history, mi_on_normal_stop, mi_traceframe_changed)
(mi_tsv_created, mi_tsv_deleted, mi_tsv_modified)
(mi_breakpoint_created, mi_breakpoint_deleted)
(mi_breakpoint_modified, mi_output_running_pid, mi_on_resume)
(mi_solib_loaded, mi_solib_unloaded, mi_command_param_changed)
(mi_memory_changed, mi_user_selected_context_changed): Update.
* infrun.c (all_uis_check_sync_execution_done)
(all_uis_on_sync_execution_starting, normal_stop): Update.
* event-top.c (restore_ui_cleanup)
(make_cleanup_restore_current_ui, switch_thru_all_uis_init)
(switch_thru_all_uis_cond, switch_thru_all_uis_next): Remove.
* cli/cli-interp.c (cli_on_normal_stop, cli_on_signal_received)
(cli_on_end_stepping_range, cli_on_signal_exited, cli_on_exited)
(cli_on_no_history, cli_on_user_selected_context_changed):
Update.
* breakpoint.c (watchpoint_check): Update.
With this patch, when an inferior, thread or frame is explicitly
selected by the user, notifications will appear on all CLI and MI UIs.
When a GDB console is integrated in a front-end, this allows the
front-end to follow a selection made by the user ont he CLI, and it
informs the user about selection changes made behind the scenes by the
front-end.
This patch addresses PR gdb/20487.
In order to communicate frame changes to the front-end, this patch adds
a new field to the =thread-selected event for the selected frame. The
idea is that since inferior/thread/frame can be seen as a composition,
it makes sense to send them together in the same event. The vision
would be to eventually send the inferior information as well, if we find
that it's needed, although the "=thread-selected" event would be
ill-named for that job.
Front-ends need to handle this new field if they want to follow the
frame selection changes that originate from the console. The format of
the frame attribute is the same as what is found in the *stopped events.
Here's a detailed example for each command and the events they generate:
thread
------
1. CLI command:
thread 1.3
MI event:
=thread-selected,id="3",frame={...}
2. MI command:
-thread-select 3
CLI event:
[Switching to thread 1.3 ...]
3. MI command (CLI-in-MI):
thread 1.3
MI event/reply:
&"thread 1.3\n"
~"#0 child_sub_function () ...
=thread-selected,id="3",frame={level="0",...}
^done
frame
-----
1. CLI command:
frame 1
MI event:
=thread-selected,id="3",frame={level="1",...}
2. MI command:
-stack-select-frame 1
CLI event:
#1 0x00000000004007f0 in child_function...
3. MI command (CLI-in-MI):
frame 1
MI event/reply:
&"frame 1\n"
~"#1 0x00000000004007f9 in ..."
=thread-selected,id="3",frame={level="1"...}
^done
inferior
--------
Inferior selection events only go from the console to MI, since there's
no way to select the inferior in pure MI.
1. CLI command:
inferior 2
MI event:
=thread-selected,id="3"
Note that if the user selects an inferior that is not started or exited,
the MI doesn't receive a notification. Since there is no threads to
select, the =thread-selected event does not apply...
2. MI command (CLI-in-MI):
inferior 2
MI event/reply:
&"inferior 2\n"
~"[Switching to inferior 2 ...]"
=thread-selected,id="4",frame={level="0"...}
^done
Internal implementation detail: this patch makes it possible to suppress
notifications caused by a CLI command, like what is done in mi-interp.c.
This means that it's now possible to use the
add_com_suppress_notification function to register a command with some
event suppressed. It is used to implement the select-frame command in
this patch.
The function command_notifies_uscc_observer was added to extract
the rather complicated logical expression from the if statement. It is
also now clearer what that logic does: if the command used by the user
already notifies the user_selected_context_changed observer, there is
not need to notify it again. It therefore protects again emitting the
event twice.
No regressions, tested on ubuntu 14.04 x86 with target boards unix and
native-extended-gdbserver.
gdb/ChangeLog:
YYYY-MM-DD Antoine Tremblay <antoine.tremblay@ericsson.com>
YYYY-MM-DD Simon Marchi <simon.marchi@ericsson.com>
PR gdb/20487
* NEWS: Mention new frame field of =thread-selected event.
* cli/cli-decode.c (add_cmd): Initialize c->suppress_notification.
(add_com_suppress_notification): New function definition.
(cmd_func): Set and restore the suppress_notification flag.
* cli/cli-deicode.h (struct cmd_list_element)
<suppress_notification>: New field.
* cli/cli-interp.c (cli_suppress_notification): New global variable.
(cli_on_user_selected_context_changed): New function.
(_initialize_cli_interp): Attach to user_selected_context_changed
observer.
* command.h (struct cli_suppress_notification): New structure.
(cli_suppress_notification): New global variable declaration.
(add_com_suppress_notification): New function declaration.
* defs.h (enum user_selected_what_flag): New enum.
(user_selected_what): New enum flag type.
* frame.h (print_stack_frame_to_uiout): New function declaration.
* gdbthread.h (print_selected_thread_frame): New function declaration.
* inferior.c (print_selected_inferior): New function definition.
(inferior_command): Remove printing of inferior/thread/frame switch
notifications, notify user_selected_context_changed observer.
* inferior.h (print_selected_inferior): New function declaration.
* mi/mi-cmds.c (struct mi_cmd): Add user_selected_context
suppression to stack-select-frame and thread-select commands.
* mi/mi-interp.c (struct mi_suppress_notification)
<user_selected_context>: Initialize.
(mi_user_selected_context_changed): New function definition.
(_initialize_mi_interp): Attach to user_selected_context_changed.
* mi/mi-main.c (mi_cmd_thread_select): Print thread selection reply.
(mi_execute_command): Handle notification suppression. Notify
user_selected_context_changed observer on thread change instead of printing
event directly. Don't send it if command already sends the notification.
(command_notifies_uscc_observer): New function.
(mi_cmd_execute): Don't handle notification suppression.
* mi/mi-main.h (struct mi_suppress_notification)
<user_selected_context>: New field.
* stack.c (print_stack_frame_to_uiout): New function definition.
(select_frame_command): Notify user_selected_context_changed
observer.
(frame_command): Call print_selected_thread_frame if there's no frame
change or notify user_selected_context_changed observer if there is.
(up_command): Notify user_selected_context_changed observer.
(down_command): Likewise.
(_initialize_stack): Suppress user_selected_context notification for
command select-frame.
* thread.c (thread_command): Notify
user_selected_context_changed if the thread has changed, print
thread info directly if it hasn't.
(do_captured_thread_select): Do not print thread switch event.
(print_selected_thread_frame): New function definition.
* tui/tui-interp.c (tui_on_user_selected_context_changed):
New function definition.
(_initialize_tui_interp): Attach to user_selected_context_changed
observer.
gdb/doc/ChangeLog:
PR gdb/20487
* gdb.texinfo (Context management): Update mention of frame
change notifications.
(gdb/mi Async Records): Document frame field in
=thread-select event.
* observer.texi (GDB Observers): New user_selected_context_changed
observer.
gdb/testsuite/ChangeLog:
PR gdb/20487
* gdb.mi/mi-pthreads.exp (check_mi_thread_command_set): Adapt
=thread-select-event check.
Currently when a "step", "next", etc. finishes, the current source
line is printed on all console UIs.
This patch makes the CLI and TUI interpreters reuse MI's logic to only
emit console output related to a synchronous command on the
console-like interpreter that started the command in the first place.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* cli/cli-interp.c (cli_on_normal_stop): Bail out early if there's
nothing to print. Use should_print_stop_to_console.
* tui/tui-interp.c (tui_on_normal_stop): Likewise.
I noticed that if we step into an inline function, step_1 never
reaches proceed, and thus nevers sets the thread's
tp->control.command_interp. Because of that,
should_print_stop_to_console fails to determine that is should print
stop output to the console.
The fix is to set the thread's command_interp earlier. However, I
realized that we can move that field to the thread_fsm, given that its
lifetime is exactly the same as thread_fsm. So the patch plumbs all
fsms constructors to take the command interp and store it in the
thread_fsm.
We can see the fix in action, with e.g., the gdb.opt/inline-cmds.exp
test, and issuing a step when stopped at line 67:
&"s\n"
^running
*running,thread-id="all"
(gdb)
~"67\t result = func2 ();\n"
*stopped,reason="end-stepping-range",frame={addr="0x00000000004004d0",func="main",args=[],file="/home/pedro/gdb/mygit/src/gdb/testsuite/gdb.opt/inline-cmds.c",fullname="/home/pedro/gdb/mygit/src/gdb/testsuite/gdb.opt/inline-cmds.c",line="67"},thread-id="1",stopped-threads="all",core="0"
(gdb)
s
&"s\n"
^running
*running,thread-id="all"
(gdb)
+ ~"func2 () at /home/pedro/gdb/mygit/src/gdb/testsuite/gdb.opt/inline-cmds.c:67\n"
+ ~"67\t result = func2 ();\n"
*stopped,reason="end-stepping-range",frame={addr="0x00000000004004d0",func="func2",args=[],file="/home/pedro/gdb/mygit/src/gdb/testsuite/gdb.opt/inline-cmds.c",fullname="/home/pedro/gdb/mygit/src/gdb/testsuite/gdb.opt/inline-cmds.c",line="67"},thread-id="1",stopped-threads="all",core="0"
(gdb)
(The inline-cmds.exp command is adjusted to exercise this.)
(Due to the follow_fork change, this also fixes "next N" across a fork
with "set follow-fork child" with "set detach-on-fork on". Commands
that rely on internal breakpoints, like "finish" will still require
more work to migrate breakpoints etc. to the child thread.)
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* breakpoint.c (new_until_break_fsm): Add 'cmd_interp' parameter.
(until_break_fsm_should_stop, until_break_fsm_clean_up): Add
thread parameter.
(until_break_command): Pass command interpreter to thread fsm
ctor.
* cli/cli-interp.c (should_print_stop_to_console): Adjust.
* gdbthread.h (struct thread_control_state) <command_interp>:
Delete field.
* infcall.c (new_call_thread_fsm): Add 'cmd_interp' parameter.
Pass it down.
(call_thread_fsm_should_stop): Add thread parameter.
(call_function_by_hand_dummy): Pass command interpreter to thread
fsm ctor. Pass thread pointer to fsm clean up method.
* infcmd.c: Include interps.h.
(struct step_command_fsm) <thread>: Delete field.
(new_step_command_fsm): Add 'cmd_interp' parameter. Pass it down.
(step_command_fsm_prepare): Remove references to fsm's thread
field.
(step_1): Pass command interpreter to thread
fsm ctor. Pass thread pointer to fsm clean up method.
(step_command_fsm_should_stop, step_command_fsm_clean_up): Add
thread parameter and use it.
(new_until_next_fsm): Add 'cmd_interp' parameter. Pass it down.
(until_next_fsm_should_stop, until_next_fsm_clean_up): Add thread
parameter and use it.
(until_next_command): Pass command interpreter to thread fsm ctor.
(struct finish_command_fsm) <thread>: Delete field.
(finish_command_fsm_ops): Add NULL slot for should_notify_stop.
(new_finish_command_fsm): Add 'cmd_interp' parameter and pass it
down. Remove thread parameter and adjust.
(finish_command_fsm_should_stop, finish_command_fsm_clean_up): Add
thread parameter and use it.
(finish_command): Pass command interpreter to thread fsm ctor.
Don't pass thread.
* infrun.c (follow_fork): Move thread fsm to child fork instead of
command interpreter, only.
(clear_proceed_status_thread): Remove reference to command_interp.
(proceed): Don't record the thread's command interpreter.
(clean_up_just_stopped_threads_fsms): Pass thread to fsm clean_up
method.
(fetch_inferior_event): Pass thread to fsm should_stop method.
* thread-fsm.c (thread_fsm_ctor): Add 'cmd_interp' parameter.
Store it.
(thread_fsm_clean_up, thread_fsm_should_stop): Add thread
parameter and pass it down.
* thread-fsm.h (struct thread_fsm) <command_interp>: New field.
(struct thread_fsm_ops) <clean_up, should_stop>: Add thread
parameter.
(thread_fsm_ctor): Add 'cmd_interp' parameter.
(thread_fsm_clean_up, thread_fsm_should_stop): Add thread
parameter.
* thread.c (thread_cancel_execution_command): Pass thread to
thread fsm clean_up method.
gdb/testsuite/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* gdb.opt/inline-cmds.c: Add "set mi break here" marker.
* gdb.opt/inline-cmds.exp: Add MI tests.
There's code in the MI interpreter that decides whether a stop should
be sent to MI's console stream. Move this check to the CLI
interpreter code, so that we can reuse it in both the CLI and TUI
interpreters.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* cli/cli-interp.c: Include gdbthread.h and thread-fsm.h.
(should_print_stop_to_console): New function, factored out from
mi_on_normal_stop_1.
* cli/cli-interp.h (should_print_stop_to_console): Declare.
* mi/mi-interp.c (mi_on_normal_stop_1): Use
should_print_stop_to_console. Pass it the current UI's console
interpreter.
* mi/mi-main.c (captured_mi_execute_command): Use the
INTERP_CONSOLE symbol rather than explicit "console".
All interpreter types (CLI/TUI/MI) print the prompt, and then call
start_event_loop.
Because we'll need an interpreter hook to display the
interpreter-specific prompt before going back to the event loop,
without actually starting an event loop, this patch moves the
start_event_loop call to common code, and replaces the command_loop
hook with a pre_command_look hook, that now just prints the prompt.
Turns out to be a cleanup on its own right anyway.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
* cli/cli-interp.c (cli_interpreter_pre_command_loop): New
function.
(cli_interp_procs): Install it instead of cli_command_loop.
* cli/cli-interp.h (cli_interpreter_pre_command_loop): Declare.
* event-top.c (cli_command_loop): Delete.
* interps.c (interp_new): Remove reference to command_loop_proc.
(current_interp_command_loop): Delete.
(interp_pre_command_loop): New function.
(interp_command_loop_ftype): Delete.
* interps.h (interp_pre_command_loop_ftype): New typedef.
(struct interp_procs) <command_loop_proc>: Delele field.
<pre_command_loop_proc>: New field.
(current_interp_command_loop): Delete declaration.
(interp_pre_command_loop): New declaration.
* main.c (captured_command_loop): Call interp_pre_command_loop
instead of current_interp_command_loop and start an event loop.
* mi/mi-interp.c (mi_command_loop): Delete.
(mi_interpreter_pre_command_loop): New.
(mi_interp_procs): Update.
* tui/tui-interp.c (tui_interp_procs): Install
cli_interpreter_pre_command_loop instead of cli_command_loop.
Due to the way that readline's API works (based on globals), we can
only have one instance of readline in a process. So the goal of this
patch is to only allow editing in the main UI, and make sure that only
one UI calls into readline. Some MI paths touch readline variables
currently, which is bad as that is changing variables that matter for
the main console UI. This patch fixes those.
This actually fixes a nasty bug -- starting gdb in MI mode ("gdb
-i=mi"), and then doing "set editing on" crashes GDB, because MI is
not prepared to use readline:
set editing on
&"set editing on\n"
=cmd-param-changed,param="editing",value="on"
^done
(gdb)
p 1
readline: readline_callback_read_char() called with no handler!
Aborted (core dumped)
The fix for that was to add an interp_proc method to query the
interpreter whether it actually supports editing. New test included.
gdb/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
PR mi/20034
* cli/cli-interp.c: Include cli-interp.h and event-top.h.
(cli_interpreter_resume): Pass 1 to gdb_setup_readline. Set the
UI's input_handler here.
(cli_interpreter_supports_command_editing): New function.
(cli_interp_procs): Install it.
* cli/cli-interp.h: New file.
* event-top.c (async_command_editing_p): Rename to ...
(set_editing_cmd_var): ... this.
(change_line_handler): Add parameter 'editing', and use it. Bail
early if the interpreter doesn't support editing. Don't touch
readline state if editing is off.
(gdb_rl_callback_handler_remove, gdb_rl_callback_handler_install)
(gdb_rl_callback_handler_reinstall): Assert the current UI is the
main UI.
(display_gdb_prompt): Don't call gdb_rl_callback_handler_remove if
not using readline. Check whether the current UI is using command
editing instead of checking the async_command_editing_p global.
(set_async_editing_command): Delete.
(gdb_setup_readline): Add 'editing' parameter. Only allow editing
on the main UI. Don't touch readline state if editing is off.
(gdb_disable_readline): Don't touch readline state if editing is
off.
* event-top.h (gdb_setup_readline): Add 'int' parameter.
(set_async_editing_command): Delete declaration.
(change_line_handler, command_line_handler): Declare.
(async_command_editing_p): Rename to ...
(set_editing_cmd_var): ... this.
* infrun.c (reinstall_readline_callback_handler_cleanup): Check
whether the current UI has editing enabled rather than checking
the async_command_editing_p global.
* interps.c (interp_supports_command_editing): New function.
* interps.h (interp_supports_command_editing_ftype): New typedef.
(struct interp_procs) <supports_command_editing_proc>: New field.
(interp_supports_command_editing): Declare.
* mi/mi-interp.c (mi_interpreter_resume): Pass 0 to
gdb_setup_readline. Don't clear the async_command_editing_p
global. Update comments.
* top.c (gdb_readline_wrapper_line, gdb_readline_wrapper): Check
whether the current UI has editing enabled rather than checking
the async_command_editing_p global. Don't touch readline state if
editing is off.
(undo_terminal_modifications_before_exit): Switch to the main UI.
Unconditionally call gdb_disable_readline.
(set_editing): New function.
(show_async_command_editing_p): Rename to ...
(show_editing): ... this. Show the state of the current UI.
(_initialize_top): Adjust.
* top.h (struct ui) <command_editing>: New field.
* tui/tui-interp.c: Include cli/cli-interp.h.
(tui_resume): Pass 1 to gdb_setup_readline. Set the UI's
input_handler.
(tui_interp_procs): Install
cli_interpreter_supports_command_editing.
* tui/tui-io.c (tui_getc): Check whether the current UI has
editing enabled rather than checking the async_command_editing_p
global.
gdb/testsuite/ChangeLog:
2016-06-21 Pedro Alves <palves@redhat.com>
PR mi/20034
* gdb.mi/mi-editing.exp: New file.
Joel Brobecker