-/* Copyright (C) 1986-2021 Free Software Foundation, Inc.
+/* Copyright (C) 1986-2023 Free Software Foundation, Inc.
This file is part of GDB.
#ifndef INFRUN_H
#define INFRUN_H 1
+#include "gdbthread.h"
#include "symtab.h"
#include "gdbsupport/byte-vector.h"
+#include "gdbsupport/intrusive_list.h"
struct target_waitstatus;
-struct frame_info;
+class frame_info_ptr;
struct address_space;
struct return_value_info;
struct process_stratum_target;
/* Print an "infrun" debug statement. */
#define infrun_debug_printf(fmt, ...) \
- debug_prefixed_printf_cond (debug_infrun, "infrun",fmt, ##__VA_ARGS__)
+ debug_prefixed_printf_cond (debug_infrun, "infrun", fmt, ##__VA_ARGS__)
+
+/* Print "infrun" start/end debug statements. */
+
+#define INFRUN_SCOPED_DEBUG_START_END(fmt, ...) \
+ scoped_debug_start_end (debug_infrun, "infrun", fmt, ##__VA_ARGS__)
+
+/* Print "infrun" enter/exit debug statements. */
+
+#define INFRUN_SCOPED_DEBUG_ENTER_EXIT \
+ scoped_debug_enter_exit (debug_infrun, "infrun")
+
+/* A infrun debug helper routine to print out all the threads in the set
+ THREADS (which should be a range type that returns thread_info*
+ objects).
+
+ The TITLE is a string that is printed before the list of threads.
+
+ Output is only produced when 'set debug infrun on'. */
+
+template<typename ThreadRange>
+static inline void
+infrun_debug_show_threads (const char *title, ThreadRange threads)
+{
+ if (debug_infrun)
+ {
+ INFRUN_SCOPED_DEBUG_ENTER_EXIT;
+
+ infrun_debug_printf ("%s:", title);
+ for (thread_info *thread : threads)
+ infrun_debug_printf (" thread %s, executing = %d, resumed = %d, "
+ "state = %s",
+ thread->ptid.to_string ().c_str (),
+ thread->executing (),
+ thread->resumed (),
+ thread_state_string (thread->state));
+ }
+}
+
/* Nonzero if we want to give control to the user when we're notified
of shared library events by the dynamic linker. */
/* The current execution direction. */
extern enum exec_direction_kind execution_direction;
+/* Call this to point 'previous_thread' at the thread returned by
+ inferior_thread, or at nullptr, if there's no selected thread. */
+extern void update_previous_thread ();
+
+/* Get a weak reference to 'previous_thread'. */
+extern thread_info *get_previous_thread ();
+
extern void start_remote (int from_tty);
/* Clear out all variables saying what to do when inferior is
appropriate messages, remove breakpoints, give terminal our modes,
and run the stop hook. Returns true if the stop hook proceeded the
target, false otherwise. */
-extern int normal_stop (void);
+extern bool normal_stop ();
/* Return the cached copy of the last target/ptid/waitstatus returned
- by target_wait()/deprecated_target_wait_hook(). The data is
- actually cached by handle_inferior_event(), which gets called
- immediately after target_wait()/deprecated_target_wait_hook(). */
+ by target_wait(). The data is actually cached by handle_inferior_event(),
+ which gets called immediately after target_wait(). */
extern void get_last_target_status (process_stratum_target **target,
ptid_t *ptid,
struct target_waitstatus *status);
/* Set the cached copy of the last target/ptid/waitstatus. */
extern void set_last_target_status (process_stratum_target *target, ptid_t ptid,
- struct target_waitstatus status);
+ const target_waitstatus &status);
/* Clear the cached copy of the last ptid/waitstatus returned by
target_wait(). */
extern void nullify_last_target_wait_ptid ();
-/* Stop all threads. Only returns after everything is halted. */
-extern void stop_all_threads (void);
+/* Stop all threads. Only returns after everything is halted.
+
+ REASON is a string indicating the reason why we stop all threads, used in
+ debug messages.
+
+ If INF is non-nullptr, stop all threads of that inferior. Otherwise, stop
+ all threads of all inferiors. */
+extern void stop_all_threads (const char *reason, inferior *inf = nullptr);
extern void prepare_for_detach (void);
/* Record in TP the frame and location we're currently stepping through. */
extern void set_step_info (thread_info *tp,
- struct frame_info *frame,
+ frame_info_ptr frame,
struct symtab_and_line sal);
+/* Notify interpreters and observers that the current inferior has stopped with
+ signal SIG. */
+extern void notify_signal_received (gdb_signal sig);
+
+/* Notify interpreters and observers that the current inferior has stopped
+ normally. */
+extern void notify_normal_stop (bpstat *bs, int print_frame);
+
+/* Notify interpreters and observers that the user focus has changed. */
+extern void notify_user_selected_context_changed (user_selected_what selection);
+
/* Several print_*_reason helper functions to print why the inferior
has stopped to the passed in UIOUT. */
extern void print_signal_received_reason (struct ui_out *uiout,
enum gdb_signal siggnal);
-/* Print why the inferior has stopped. We are done with a
- step/next/si/ni command, print why the inferior has stopped. */
-extern void print_end_stepping_range_reason (struct ui_out *uiout);
-
/* The inferior was terminated by a signal, print why it stopped. */
extern void print_signal_exited_reason (struct ui_out *uiout,
enum gdb_signal siggnal);
/* Pretty print the results of target_wait, for debugging purposes. */
extern void print_target_wait_results (ptid_t waiton_ptid, ptid_t result_ptid,
- const struct target_waitstatus *ws);
+ const struct target_waitstatus &ws);
extern int signal_stop_state (int);
$_exitsignal. */
extern void clear_exit_convenience_vars (void);
-/* Dump LEN bytes at BUF in hex to a string and return it. */
-extern std::string displaced_step_dump_bytes (const gdb_byte *buf, size_t len);
-
extern void update_observer_mode (void);
extern void signal_catch_update (const unsigned int *);
/* The global chain of threads that need to do a step-over operation
to get past e.g., a breakpoint. */
-extern struct thread_info *global_thread_step_over_chain_head;
+extern thread_step_over_list global_thread_step_over_list;
/* Remove breakpoints if possible (usually that means, if everything
is stopped). On failure, print a message. */
started or re-started). */
extern void all_uis_on_sync_execution_starting (void);
+/* In all-stop, restart the target if it had to be stopped to
+ detach. */
+extern void restart_after_all_stop_detach (process_stratum_target *proc_target);
+
+/* RAII object to temporarily disable the requirement for target
+ stacks to commit their resumed threads.
+
+ On construction, set process_stratum_target::commit_resumed_state
+ to false for all process_stratum targets in all target
+ stacks.
+
+ On destruction (or if reset_and_commit() is called), set
+ process_stratum_target::commit_resumed_state to true for all
+ process_stratum targets in all target stacks, except those that:
+
+ - have no resumed threads
+ - have a resumed thread with a pending status
+
+ target_commit_resumed is not called in the destructor, because its
+ implementations could throw, and we don't to swallow that error in
+ a destructor. Instead, the caller should call the
+ reset_and_commit_resumed() method so that an eventual exception can
+ propagate. "reset" in the method name refers to the fact that this
+ method has the same effect as the destructor, in addition to
+ committing resumes.
+
+ The creation of nested scoped_disable_commit_resumed objects is
+ tracked, such that only the outermost instance actually does
+ something, for cases like this:
+
+ void
+ inner_func ()
+ {
+ scoped_disable_commit_resumed disable;
+
+ // do stuff
+
+ disable.reset_and_commit ();
+ }
+
+ void
+ outer_func ()
+ {
+ scoped_disable_commit_resumed disable;
+
+ for (... each thread ...)
+ inner_func ();
+
+ disable.reset_and_commit ();
+ }
+
+ In this case, we don't want the `disable` destructor in
+ `inner_func` to require targets to commit resumed threads, so that
+ the `reset_and_commit()` call in `inner_func` doesn't actually
+ resume threads. */
+
+struct scoped_disable_commit_resumed
+{
+ explicit scoped_disable_commit_resumed (const char *reason);
+ ~scoped_disable_commit_resumed ();
+
+ DISABLE_COPY_AND_ASSIGN (scoped_disable_commit_resumed);
+
+ /* Undoes the disabling done by the ctor, and calls
+ maybe_call_commit_resumed_all_targets(). */
+ void reset_and_commit ();
+
+private:
+ /* Undoes the disabling done by the ctor. */
+ void reset ();
+
+ /* Whether this object has been reset. */
+ bool m_reset = false;
+
+ const char *m_reason;
+ bool m_prev_enable_commit_resumed;
+};
+
+/* Call target_commit_resumed method on all target stacks whose
+ process_stratum target layer has COMMIT_RESUME_STATE set. */
+
+extern void maybe_call_commit_resumed_all_targets ();
+
+/* RAII object to temporarily enable the requirement for target stacks
+ to commit their resumed threads. This is the inverse of
+ scoped_disable_commit_resumed. The constructor calls the
+ maybe_call_commit_resumed_all_targets function itself, since it's
+ OK to throw from a constructor. */
+
+struct scoped_enable_commit_resumed
+{
+ explicit scoped_enable_commit_resumed (const char *reason);
+ ~scoped_enable_commit_resumed ();
+
+ DISABLE_COPY_AND_ASSIGN (scoped_enable_commit_resumed);
+
+private:
+ const char *m_reason;
+ bool m_prev_enable_commit_resumed;
+};
+
+
#endif /* INFRUN_H */
projects / binutils-gdb.git / blobdiff