/* Variables that describe the inferior process running under GDB:
Where it is, why it stopped, and how to step it.
- Copyright (C) 1986, 1988-1996, 1998-2001, 2003-2012 Free Software
- Foundation, Inc.
+ Copyright (C) 1986-2020 Free Software Foundation, Inc.
This file is part of GDB.
struct regcache;
struct ui_out;
struct terminal_info;
-
-#include "ptid.h"
+struct target_desc_info;
+struct continuation;
+struct inferior;
+struct thread_info;
/* For bpstat. */
#include "breakpoint.h"
/* For struct frame_id. */
#include "frame.h"
+/* For gdb_environ. */
+#include "gdbsupport/environ.h"
+
#include "progspace.h"
+#include "registry.h"
+
+#include "symfile-add-flags.h"
+#include "gdbsupport/refcounted-object.h"
+#include "gdbsupport/forward-scope-exit.h"
+
+#include "gdbsupport/common-inferior.h"
+#include "gdbthread.h"
+
+#include "process-stratum-target.h"
struct infcall_suspend_state;
struct infcall_control_state;
-extern struct infcall_suspend_state *save_infcall_suspend_state (void);
-extern struct infcall_control_state *save_infcall_control_state (void);
-
extern void restore_infcall_suspend_state (struct infcall_suspend_state *);
extern void restore_infcall_control_state (struct infcall_control_state *);
-extern struct cleanup *make_cleanup_restore_infcall_suspend_state
- (struct infcall_suspend_state *);
-extern struct cleanup *make_cleanup_restore_infcall_control_state
- (struct infcall_control_state *);
+/* A deleter for infcall_suspend_state that calls
+ restore_infcall_suspend_state. */
+struct infcall_suspend_state_deleter
+{
+ void operator() (struct infcall_suspend_state *state) const
+ {
+ try
+ {
+ restore_infcall_suspend_state (state);
+ }
+ catch (const gdb_exception_error &e)
+ {
+ /* If we are restoring the inferior state due to an exception,
+ some error message will be printed. So, only warn the user
+ when we cannot restore during normal execution. */
+ if (!std::uncaught_exception ())
+ warning (_("Failed to restore inferior state: %s"), e.what ());
+ }
+ }
+};
+
+/* A unique_ptr specialization for infcall_suspend_state. */
+typedef std::unique_ptr<infcall_suspend_state, infcall_suspend_state_deleter>
+ infcall_suspend_state_up;
-extern void discard_infcall_suspend_state (struct infcall_suspend_state *);
-extern void discard_infcall_control_state (struct infcall_control_state *);
+extern infcall_suspend_state_up save_infcall_suspend_state ();
-extern struct regcache *
- get_infcall_suspend_state_regcache (struct infcall_suspend_state *);
+/* A deleter for infcall_control_state that calls
+ restore_infcall_control_state. */
+struct infcall_control_state_deleter
+{
+ void operator() (struct infcall_control_state *state) const
+ {
+ restore_infcall_control_state (state);
+ }
+};
-/* Returns true if PTID matches filter FILTER. FILTER can be the wild
- card MINUS_ONE_PTID (all ptid match it); can be a ptid representing
- a process (ptid_is_pid returns true), in which case, all lwps and
- threads of that given process match, lwps and threads of other
- processes do not; or, it can represent a specific thread, in which
- case, only that thread will match true. PTID must represent a
- specific LWP or THREAD, it can never be a wild card. */
+/* A unique_ptr specialization for infcall_control_state. */
+typedef std::unique_ptr<infcall_control_state, infcall_control_state_deleter>
+ infcall_control_state_up;
-extern int ptid_match (ptid_t ptid, ptid_t filter);
+extern infcall_control_state_up save_infcall_control_state ();
-/* Save value of inferior_ptid so that it may be restored by
- a later call to do_cleanups(). Returns the struct cleanup
- pointer needed for later doing the cleanup. */
-extern struct cleanup * save_inferior_ptid (void);
+extern void discard_infcall_suspend_state (struct infcall_suspend_state *);
+extern void discard_infcall_control_state (struct infcall_control_state *);
+
+extern readonly_detached_regcache *
+ get_infcall_suspend_state_regcache (struct infcall_suspend_state *);
extern void set_sigint_trap (void);
extern const char *get_inferior_io_terminal (void);
/* Collected pid, tid, etc. of the debugged inferior. When there's
- no inferior, PIDGET (inferior_ptid) will be 0. */
+ no inferior, inferior_ptid.pid () will be 0. */
extern ptid_t inferior_ptid;
-/* Are we simulating synchronous execution? This is used in async gdb
- to implement the 'run', 'continue' etc commands, which will not
- redisplay the prompt until the execution is actually over. */
-extern int sync_execution;
-
-/* Inferior environment. */
-
-extern void clear_proceed_status (void);
-
-extern void proceed (CORE_ADDR, enum gdb_signal, int);
-
-extern int sched_multi;
-
-/* When set, stop the 'step' command if we enter a function which has
- no line number information. The normal behavior is that we step
- over such function. */
-extern int step_stop_if_no_debug;
-
-/* If set, the inferior should be controlled in non-stop mode. In
- this mode, each thread is controlled independently. Execution
- commands apply only to the selected thread by default, and stop
- events stop only the thread that had the event -- the other threads
- are kept running freely. */
-extern int non_stop;
-
-/* If set (default), when following a fork, GDB will detach from one
- the fork branches, child or parent. Exactly which branch is
- detached depends on 'set follow-fork-mode' setting. */
-extern int detach_fork;
-
-/* When set (default), the target should attempt to disable the operating
- system's address space randomization feature when starting an inferior. */
-extern int disable_randomization;
-
extern void generic_mourn_inferior (void);
-extern void terminal_save_ours (void);
-
-extern void terminal_ours (void);
-
extern CORE_ADDR unsigned_pointer_to_address (struct gdbarch *gdbarch,
struct type *type,
const gdb_byte *buf);
struct type *type, gdb_byte *buf,
CORE_ADDR addr);
-extern void wait_for_inferior (void);
-
-extern void prepare_for_detach (void);
-
-extern void fetch_inferior_event (void *);
-
-extern void init_wait_for_inferior (void);
-
extern void reopen_exec_file (void);
-/* The `resume' routine should only be called in special circumstances.
- Normally, use `proceed', which handles a lot of bookkeeping. */
-
-extern void resume (int, enum gdb_signal);
-
-extern ptid_t user_visible_resume_ptid (int step);
-
-extern void insert_step_resume_breakpoint_at_sal (struct gdbarch *,
- struct symtab_and_line ,
- struct frame_id);
-
/* From misc files */
extern void default_print_registers_info (struct gdbarch *gdbarch,
struct frame_info *frame,
int regnum, int all);
-extern void child_terminal_info (char *, int);
-
-extern void term_info (char *, int);
-
-extern void terminal_ours_for_output (void);
-
-extern void terminal_inferior (void);
-
-extern void terminal_init_inferior (void);
-
-extern void terminal_init_inferior_with_pgrp (int pgrp);
-
-/* From fork-child.c */
-
-extern int fork_inferior (char *, char *, char **,
- void (*)(void),
- void (*)(int), void (*)(void), char *,
- void (*)(const char *,
- char * const *, char * const *));
+/* Default implementation of gdbarch_print_float_info. Print
+ the values of all floating point registers. */
+extern void default_print_float_info (struct gdbarch *gdbarch,
+ struct ui_file *file,
+ struct frame_info *frame,
+ const char *args);
-extern void startup_inferior (int);
-
-extern char *construct_inferior_arguments (int, char **);
+extern void child_terminal_info (struct target_ops *self, const char *, int);
-/* From infrun.c */
+extern void child_terminal_ours (struct target_ops *self);
-extern int debug_infrun;
+extern void child_terminal_ours_for_output (struct target_ops *self);
-extern int stop_on_solib_events;
+extern void child_terminal_inferior (struct target_ops *self);
-extern void start_remote (int from_tty);
+extern void child_terminal_save_inferior (struct target_ops *self);
-extern void normal_stop (void);
+extern void child_terminal_init (struct target_ops *self);
-extern int signal_stop_state (int);
+extern void child_terminal_init_with_pgrp (int pgrp);
-extern int signal_print_state (int);
+extern void child_pass_ctrlc (struct target_ops *self);
-extern int signal_pass_state (int);
+extern void child_interrupt (struct target_ops *self);
-extern int signal_stop_update (int, int);
-
-extern int signal_print_update (int, int);
-
-extern int signal_pass_update (int, int);
-
-extern void get_last_target_status(ptid_t *ptid,
- struct target_waitstatus *status);
+/* From fork-child.c */
-extern void follow_inferior_reset_breakpoints (void);
+/* Helper function to call STARTUP_INFERIOR with PID and NUM_TRAPS.
+ This function already calls set_executing. Return the ptid_t from
+ STARTUP_INFERIOR. */
+extern ptid_t gdb_startup_inferior (pid_t pid, int num_traps);
-/* Throw an error indicating the current thread is running. */
-extern void error_is_running (void);
+extern char *construct_inferior_arguments (int, char **);
-/* Calls error_is_running if the current thread is running. */
-extern void ensure_not_running (void);
+/* From infcmd.c */
-void set_step_info (struct frame_info *frame, struct symtab_and_line sal);
+/* Initial inferior setup. Determines the exec file is not yet known,
+ takes any necessary post-attaching actions, fetches the target
+ description and syncs the shared library list. */
-/* From infcmd.c */
+extern void setup_inferior (int from_tty);
extern void post_create_inferior (struct target_ops *, int);
-extern void attach_command (char *, int);
+extern void attach_command (const char *, int);
-extern char *get_inferior_args (void);
+extern const char *get_inferior_args (void);
-extern void set_inferior_args (char *);
+extern void set_inferior_args (const char *);
extern void set_inferior_args_vector (int, char **);
-extern void registers_info (char *, int);
-
-extern void nexti_command (char *, int);
-
-extern void stepi_command (char *, int);
+extern void registers_info (const char *, int);
extern void continue_1 (int all_threads);
-extern void continue_command (char *, int);
+extern void interrupt_target_1 (bool all_threads);
-extern void interrupt_target_command (char *args, int from_tty);
+using delete_longjmp_breakpoint_cleanup
+ = FORWARD_SCOPE_EXIT (delete_longjmp_breakpoint);
-extern void interrupt_target_1 (int all_threads);
+extern void detach_command (const char *, int);
-extern void delete_longjmp_breakpoint_cleanup (void *arg);
-
-extern void detach_command (char *, int);
-
-extern void notice_new_inferior (ptid_t, int, int);
+extern void notice_new_inferior (struct thread_info *, int, int);
extern struct value *get_return_value (struct value *function,
- struct type *value_type);
+ struct type *value_type);
-/* Address at which inferior stopped. */
+/* Prepare for execution command. TARGET is the target that will run
+ the command. BACKGROUND determines whether this is a foreground
+ (synchronous) or background (asynchronous) command. */
-extern CORE_ADDR stop_pc;
+extern void prepare_execution_command (struct target_ops *target,
+ int background);
/* Nonzero if stopped due to completion of a stack dummy routine. */
extern int stopped_by_random_signal;
-/* STEP_OVER_ALL means step over all subroutine calls.
- STEP_OVER_UNDEBUGGABLE means step over calls to undebuggable functions.
- STEP_OVER_NONE means don't step over any subroutine calls. */
-
-enum step_over_calls_kind
- {
- STEP_OVER_NONE,
- STEP_OVER_ALL,
- STEP_OVER_UNDEBUGGABLE
- };
+/* Print notices on inferior events (attach, detach, etc.), set with
+ `set print inferior-events'. */
+extern bool print_inferior_events;
/* Anything but NO_STOP_QUIETLY means we expect a trap and the caller
will handle it themselves. STOP_QUIETLY is used when running in
setting up a remote connection; it is like STOP_QUIETLY_NO_SIGSTOP
except that there is no need to hide a signal. */
-/* It is also used after attach, due to attaching to a process. This
- is a bit trickier. When doing an attach, the kernel stops the
- debuggee with a SIGSTOP. On newer GNU/Linux kernels (>= 2.5.61)
- the handling of SIGSTOP for a ptraced process has changed. Earlier
- versions of the kernel would ignore these SIGSTOPs, while now
- SIGSTOP is treated like any other signal, i.e. it is not muffled.
-
+/* STOP_QUIETLY_NO_SIGSTOP is used to handle a tricky situation with attach.
+ When doing an attach, the kernel stops the debuggee with a SIGSTOP.
+ On newer GNU/Linux kernels (>= 2.5.61) the handling of SIGSTOP for
+ a ptraced process has changed. Earlier versions of the kernel
+ would ignore these SIGSTOPs, while now SIGSTOP is treated like any
+ other signal, i.e. it is not muffled.
+
If the gdb user does a 'continue' after the 'attach', gdb passes
the global variable stop_signal (which stores the signal from the
attach, SIGSTOP) to the ptrace(PTRACE_CONT,...) call. This is
problematic, because the kernel doesn't ignore such SIGSTOP
now. I.e. it is reported back to gdb, which in turn presents it
back to the user.
-
+
To avoid the problem, we use STOP_QUIETLY_NO_SIGSTOP, which allows
gdb to clear the value of stop_signal after the attach, so that it
is not passed back down to the kernel. */
STOP_QUIETLY_NO_SIGSTOP
};
-/* Reverse execution. */
-enum exec_direction_kind
- {
- EXEC_FORWARD,
- EXEC_REVERSE
- };
-
-/* The current execution direction. This should only be set to enum
- exec_direction_kind values. It is only an int to make it
- compatible with make_cleanup_restore_integer. */
-extern int execution_direction;
-
-/* Save register contents here when executing a "finish" command or are
- about to pop a stack dummy frame, if-and-only-if proceed_to_finish is set.
- Thus this contains the return value from the called function (assuming
- values are returned in a register). */
-
-extern struct regcache *stop_registers;
-
-/* True if we are debugging displaced stepping. */
-extern int debug_displaced;
-
-/* Dump LEN bytes at BUF in hex to FILE, followed by a newline. */
-void displaced_step_dump_bytes (struct ui_file *file,
- const gdb_byte *buf, size_t len);
-
-struct displaced_step_closure *get_displaced_step_closure_by_addr (CORE_ADDR addr);
\f
/* Possible values for gdbarch_call_dummy_location. */
#define ON_STACK 1
#define AT_ENTRY_POINT 4
-/* If STARTUP_WITH_SHELL is set, GDB's "run"
- will attempts to start up the debugee under a shell.
- This is in order for argument-expansion to occur. E.g.,
- (gdb) run *
- The "*" gets expanded by the shell into a list of files.
- While this is a nice feature, it turns out to interact badly
- with some of the catch-fork/catch-exec features we have added.
- In particular, if the shell does any fork/exec's before
- the exec of the target program, that can confuse GDB.
- To disable this feature, set STARTUP_WITH_SHELL to 0.
- To enable this feature, set STARTUP_WITH_SHELL to 1.
- The catch-exec traps expected during start-up will
- be 1 if target is not started up with a shell, 2 if it is.
- - RT
- If you disable this, you need to decrement
- START_INFERIOR_TRAPS_EXPECTED in tm.h. */
-#define STARTUP_WITH_SHELL 1
-#if !defined(START_INFERIOR_TRAPS_EXPECTED)
-#define START_INFERIOR_TRAPS_EXPECTED 2
-#endif
-
-struct private_inferior;
+/* Base class for target-specific inferior data. */
+
+struct private_inferior
+{
+ virtual ~private_inferior () = 0;
+};
/* Inferior process specific part of `struct infcall_control_state'.
struct inferior_control_state
{
+ inferior_control_state ()
+ : stop_soon (NO_STOP_QUIETLY)
+ {
+ }
+
+ explicit inferior_control_state (enum stop_kind when)
+ : stop_soon (when)
+ {
+ }
+
/* See the definition of stop_kind above. */
enum stop_kind stop_soon;
};
-/* Inferior process specific part of `struct infcall_suspend_state'.
+/* Return a pointer to the current inferior. */
+extern inferior *current_inferior ();
- Inferior thread counterpart is `struct thread_suspend_state'. */
+extern void set_current_inferior (inferior *);
-struct inferior_suspend_state
-{
-};
+/* Switch inferior (and program space) to INF, and switch to no thread
+ selected. */
+extern void switch_to_inferior_no_thread (inferior *inf);
/* GDB represents the state of each program execution with an object
called an inferior. An inferior typically corresponds to a process
inferior, as does each attachment to an existing process.
Inferiors have unique internal identifiers that are different from
target process ids. Each inferior may in turn have multiple
- threads running in it. */
-
-struct inferior
+ threads running in it.
+
+ Inferiors are intrusively refcounted objects. Unlike thread
+ objects, being the user-selected inferior is considered a strong
+ reference and is thus accounted for in the inferior object's
+ refcount (see set_current_inferior). When GDB needs to remember
+ the selected inferior to later restore it, GDB temporarily bumps
+ the inferior object's refcount, to prevent something deleting the
+ inferior object before reverting back (e.g., due to a
+ "remove-inferiors" command (see
+ scoped_restore_current_inferior). All other inferior
+ references are considered weak references. Inferiors are always
+ listed exactly once in the inferior list, so placing an inferior in
+ the inferior list is an implicit, not counted strong reference. */
+
+class inferior : public refcounted_object
{
+public:
+ explicit inferior (int pid);
+ ~inferior ();
+
+ /* Returns true if we can delete this inferior. */
+ bool deletable () const { return refcount () == 0; }
+
+ /* Push T in this inferior's target stack. */
+ void push_target (struct target_ops *t)
+ { m_target_stack.push (t); }
+
+ /* Unpush T from this inferior's target stack. */
+ int unpush_target (struct target_ops *t)
+ { return m_target_stack.unpush (t); }
+
+ /* Returns true if T is pushed in this inferior's target stack. */
+ bool target_is_pushed (target_ops *t)
+ { return m_target_stack.is_pushed (t); }
+
+ /* Find the target beneath T in this inferior's target stack. */
+ target_ops *find_target_beneath (const target_ops *t)
+ { return m_target_stack.find_beneath (t); }
+
+ /* Return the target at the top of this inferior's target stack. */
+ target_ops *top_target ()
+ { return m_target_stack.top (); }
+
+ /* Return the target at process_stratum level in this inferior's
+ target stack. */
+ struct process_stratum_target *process_target ()
+ { return (process_stratum_target *) m_target_stack.at (process_stratum); }
+
+ /* Return the target at STRATUM in this inferior's target stack. */
+ target_ops *target_at (enum strata stratum)
+ { return m_target_stack.at (stratum); }
+
+ bool has_execution ()
+ { return target_has_execution_1 (this); }
+
/* Pointer to next inferior in singly-linked list of inferiors. */
- struct inferior *next;
+ struct inferior *next = NULL;
+
+ /* This inferior's thread list. */
+ thread_info *thread_list = nullptr;
+
+ /* Returns a range adapter covering the inferior's threads,
+ including exited threads. Used like this:
+
+ for (thread_info *thr : inf->threads ())
+ { .... }
+ */
+ inf_threads_range threads ()
+ { return inf_threads_range (this->thread_list); }
+
+ /* Returns a range adapter covering the inferior's non-exited
+ threads. Used like this:
+
+ for (thread_info *thr : inf->non_exited_threads ())
+ { .... }
+ */
+ inf_non_exited_threads_range non_exited_threads ()
+ { return inf_non_exited_threads_range (this->thread_list); }
+
+ /* Like inferior::threads(), but returns a range adapter that can be
+ used with range-for, safely. I.e., it is safe to delete the
+ currently-iterated thread, like this:
+
+ for (thread_info *t : inf->threads_safe ())
+ if (some_condition ())
+ delete f;
+ */
+ inline safe_inf_threads_range threads_safe ()
+ { return safe_inf_threads_range (this->thread_list); }
/* Convenient handle (GDB inferior id). Unique across all
inferiors. */
- int num;
+ int num = 0;
/* Actual target inferior id, usually, a process id. This matches
the ptid_t.pid member of threads of this inferior. */
- int pid;
+ int pid = 0;
/* True if the PID was actually faked by GDB. */
- int fake_pid_p;
+ bool fake_pid_p = false;
+
+ /* The highest thread number this inferior ever had. */
+ int highest_thread_num = 0;
/* State of GDB control of inferior process execution.
See `struct inferior_control_state'. */
- struct inferior_control_state control;
-
- /* State of inferior process to restore after GDB is done with an inferior
- call. See `struct inferior_suspend_state'. */
- struct inferior_suspend_state suspend;
+ inferior_control_state control;
/* True if this was an auto-created inferior, e.g. created from
following a fork; false, if this inferior was manually added by
the user, and we should not attempt to prune it
automatically. */
- int removable;
+ bool removable = false;
/* The address space bound to this inferior. */
- struct address_space *aspace;
+ struct address_space *aspace = NULL;
/* The program space bound to this inferior. */
- struct program_space *pspace;
+ struct program_space *pspace = NULL;
/* The arguments string to use when running. */
- char *args;
+ char *args = NULL;
/* The size of elements in argv. */
- int argc;
+ int argc = 0;
/* The vector version of arguments. If ARGC is nonzero,
then we must compute ARGS from this (via the target).
This is always coming from main's argv and therefore
should never be freed. */
- char **argv;
+ char **argv = NULL;
+
+ /* The current working directory that will be used when starting
+ this inferior. */
+ gdb::unique_xmalloc_ptr<char> cwd;
/* The name of terminal device to use for I/O. */
- char *terminal;
+ char *terminal = NULL;
+
+ /* The terminal state as set by the last target_terminal::terminal_*
+ call. */
+ target_terminal_state terminal_state = target_terminal_state::is_ours;
/* Environment to use for running inferior,
in format described in environ.h. */
- struct gdb_environ *environment;
+ gdb_environ environment;
- /* Nonzero if this child process was attached rather than
- forked. */
- int attach_flag;
+ /* True if this child process was attached rather than forked. */
+ bool attach_flag = false;
/* If this inferior is a vfork child, then this is the pointer to
its vfork parent, if GDB is still attached to it. */
- struct inferior *vfork_parent;
+ inferior *vfork_parent = NULL;
/* If this process is a vfork parent, this is the pointer to the
child. Since a vfork parent is left frozen by the kernel until
the child execs or exits, a process can only have one vfork child
at a given time. */
- struct inferior *vfork_child;
+ inferior *vfork_child = NULL;
/* True if this inferior should be detached when it's vfork sibling
exits or execs. */
- int pending_detach;
+ bool pending_detach = false;
/* True if this inferior is a vfork parent waiting for a vfork child
not under our control to be done with the shared memory region,
either by exiting or execing. */
- int waiting_for_vfork_done;
+ bool waiting_for_vfork_done = false;
/* True if we're in the process of detaching from this inferior. */
- int detaching;
+ bool detaching = false;
/* What is left to do for an execution command after any thread of
this inferior stops. For continuations associated with a
specific thread, see `struct thread_info'. */
- struct continuation *continuations;
+ continuation *continuations = NULL;
+
+ /* True if setup_inferior wasn't called for this inferior yet.
+ Until that is done, we must not access inferior memory or
+ registers, as we haven't determined the target
+ architecture/description. */
+ bool needs_setup = false;
/* Private data used by the target vector implementation. */
- struct private_inferior *private;
+ std::unique_ptr<private_inferior> priv;
/* HAS_EXIT_CODE is true if the inferior exited with an exit code.
In this case, the EXIT_CODE field is also valid. */
- int has_exit_code;
- LONGEST exit_code;
+ bool has_exit_code = false;
+ LONGEST exit_code = 0;
/* Default flags to pass to the symbol reading functions. These are
- used whenever a new objfile is created. The valid values come
- from enum symfile_add_flags. */
- int symfile_flags;
+ used whenever a new objfile is created. */
+ symfile_add_flags symfile_flags = 0;
+
+ /* Info about an inferior's target description (if it's fetched; the
+ user supplied description's filename, if any; etc.). */
+ target_desc_info *tdesc_info = NULL;
+
+ /* The architecture associated with the inferior through the
+ connection to the target.
+
+ The architecture vector provides some information that is really
+ a property of the inferior, accessed through a particular target:
+ ptrace operations; the layout of certain RSP packets; the
+ solib_ops vector; etc. To differentiate architecture accesses to
+ per-inferior/target properties from
+ per-thread/per-frame/per-objfile properties, accesses to
+ per-inferior/target properties should be made through
+ this gdbarch. */
+ struct gdbarch *gdbarch = NULL;
+
+ /* Data related to displaced stepping. */
+ displaced_step_inferior_state displaced_step_state;
/* Per inferior data-pointers required by other GDB modules. */
- void **data;
- unsigned num_data;
+ REGISTRY_FIELDS;
+
+private:
+ /* The inferior's target stack. */
+ target_stack m_target_stack;
};
/* Keep a registry of per-inferior data-pointers required by other GDB
modules. */
-extern const struct inferior_data *register_inferior_data (void);
-extern const struct inferior_data *register_inferior_data_with_cleanup
- (void (*cleanup) (struct inferior *, void *));
-extern void clear_inferior_data (struct inferior *inf);
-extern void set_inferior_data (struct inferior *inf,
- const struct inferior_data *data, void *value);
-extern void *inferior_data (struct inferior *inf,
- const struct inferior_data *data);
-
-/* Create an empty inferior list, or empty the existing one. */
-extern void init_inferior_list (void);
+DECLARE_REGISTRY (inferior);
/* Add an inferior to the inferior list, print a message that a new
inferior is found, and return the pointer to the new inferior.
the CLI. */
extern struct inferior *add_inferior_silent (int pid);
-/* Delete an existing inferior list entry, due to inferior exit. */
-extern void delete_inferior (int pid);
-
-extern void delete_inferior_1 (struct inferior *todel, int silent);
-
-/* Same as delete_inferior, but don't print new inferior notifications
- to the CLI. */
-extern void delete_inferior_silent (int pid);
+extern void delete_inferior (struct inferior *todel);
/* Delete an existing inferior list entry, due to inferior detaching. */
-extern void detach_inferior (int pid);
+extern void detach_inferior (inferior *inf);
-extern void exit_inferior (int pid);
+extern void exit_inferior (inferior *inf);
-extern void exit_inferior_silent (int pid);
+extern void exit_inferior_silent (inferior *inf);
extern void exit_inferior_num_silent (int num);
extern void inferior_appeared (struct inferior *inf, int pid);
-/* Get rid of all inferiors. */
-extern void discard_all_inferiors (void);
-
-/* Translate the integer inferior id (GDB's homegrown id, not the system's)
- into a "pid" (which may be overloaded with extra inferior information). */
-extern int gdb_inferior_id_to_pid (int);
+/* Search function to lookup an inferior of TARG by target 'pid'. */
+extern struct inferior *find_inferior_pid (process_stratum_target *targ,
+ int pid);
-/* Translate a target 'pid' into the integer inferior id (GDB's
- homegrown id, not the system's). */
-extern int pid_to_gdb_inferior_id (int pid);
-
-/* Boolean test for an already-known pid. */
-extern int in_inferior_list (int pid);
-
-/* Boolean test for an already-known inferior id (GDB's homegrown id,
- not the system's). */
-extern int valid_gdb_inferior_id (int num);
-
-/* Search function to lookup an inferior by target 'pid'. */
-extern struct inferior *find_inferior_pid (int pid);
+/* Search function to lookup an inferior of TARG whose pid is equal to
+ 'ptid.pid'. */
+extern struct inferior *find_inferior_ptid (process_stratum_target *targ,
+ ptid_t ptid);
/* Search function to lookup an inferior by GDB 'num'. */
extern struct inferior *find_inferior_id (int num);
-/* Find an inferior bound to PSPACE. */
+/* Find an inferior bound to PSPACE, giving preference to the current
+ inferior. */
extern struct inferior *
find_inferior_for_program_space (struct program_space *pspace);
/* Returns true if the inferior list is not empty. */
extern int have_inferiors (void);
+/* Returns the number of live inferiors running on PROC_TARGET (real
+ live processes with execution). */
+extern int number_of_live_inferiors (process_stratum_target *proc_target);
+
/* Returns true if there are any live inferiors in the inferior list
(not cores, not executables, real live processes). */
extern int have_live_inferiors (void);
-/* Return a pointer to the current inferior. It is an error to call
- this if there is no current inferior. */
-extern struct inferior *current_inferior (void);
+/* Save/restore the current inferior. */
-extern void set_current_inferior (struct inferior *);
+class scoped_restore_current_inferior
+{
+public:
+ scoped_restore_current_inferior ()
+ : m_saved_inf (current_inferior ())
+ {}
-extern struct cleanup *save_current_inferior (void);
+ ~scoped_restore_current_inferior ()
+ { set_current_inferior (m_saved_inf); }
-/* Traverse all inferiors. */
+ DISABLE_COPY_AND_ASSIGN (scoped_restore_current_inferior);
+
+private:
+ inferior *m_saved_inf;
+};
-#define ALL_INFERIORS(I) \
- for ((I) = inferior_list; (I); (I) = (I)->next)
+
+/* Traverse all inferiors. */
extern struct inferior *inferior_list;
+/* Pull in the internals of the inferiors ranges and iterators. Must
+ be done after struct inferior is defined. */
+#include "inferior-iter.h"
+
+/* Return a range that can be used to walk over all inferiors
+ inferiors, with range-for, safely. I.e., it is safe to delete the
+ currently-iterated inferior. When combined with range-for, this
+ allow convenient patterns like this:
+
+ for (inferior *inf : all_inferiors_safe ())
+ if (some_condition ())
+ delete inf;
+*/
+
+inline all_inferiors_safe_range
+all_inferiors_safe ()
+{
+ return {};
+}
+
+/* Returns a range representing all inferiors, suitable to use with
+ range-for, like this:
+
+ for (inferior *inf : all_inferiors ())
+ [...]
+*/
+
+inline all_inferiors_range
+all_inferiors (process_stratum_target *proc_target = nullptr)
+{
+ return all_inferiors_range (proc_target);
+}
+
+/* Return a range that can be used to walk over all inferiors with PID
+ not zero, with range-for. */
+
+inline all_non_exited_inferiors_range
+all_non_exited_inferiors (process_stratum_target *proc_target = nullptr)
+{
+ return all_non_exited_inferiors_range (proc_target);
+}
+
/* Prune away automatically added inferiors that aren't required
anymore. */
extern void prune_inferiors (void);
extern struct inferior *add_inferior_with_spaces (void);
-extern void update_observer_mode (void);
-
-extern void update_signals_program_target (void);
-
-/* In some circumstances we allow a command to specify a numeric
- signal. The idea is to keep these circumstances limited so that
- users (and scripts) develop portable habits. For comparison,
- POSIX.2 `kill' requires that 1,2,3,6,9,14, and 15 work (and using a
- numeric signal at all is obsolescent. We are slightly more lenient
- and allow 1-15 which should match host signal numbers on most
- systems. Use of symbolic signal names is strongly encouraged. */
-
-enum gdb_signal gdb_signal_from_command (int num);
+/* Print the current selected inferior. */
+extern void print_selected_inferior (struct ui_out *uiout);
#endif /* !defined (INFERIOR_H) */
projects / deliverable / binutils-gdb.git / blobdiff