/* Variables that describe the inferior process running under GDB:
Where it is, why it stopped, and how to step it.
- Copyright (C) 1986-2021 Free Software Foundation, Inc.
+ Copyright (C) 1986-2022 Free Software Foundation, Inc.
This file is part of GDB.
#include "gdbsupport/refcounted-object.h"
#include "gdbsupport/forward-scope-exit.h"
#include "gdbsupport/gdb_unique_ptr.h"
+#include "gdbsupport/intrusive_list.h"
#include "gdbsupport/common-inferior.h"
#include "gdbthread.h"
#include "process-stratum-target.h"
#include "displaced-stepping.h"
+#include <unordered_map>
+
struct infcall_suspend_state;
struct infcall_control_state;
extern void attach_command (const char *, int);
-extern const char *get_inferior_args (void);
-
-extern void set_inferior_args (const char *);
-
extern void set_inferior_args_vector (int, char **);
extern void registers_info (const char *, int);
extern void notice_new_inferior (struct thread_info *, bool, int);
-extern struct value *get_return_value (struct value *function,
- struct type *value_type);
+/* Return the value of the result of a function at the end of a 'finish'
+ command/BP. If the result's value cannot be retrieved, return NULL.
+
+ FUNC_SYMBOL is the symbol of the function being returned from. FUNCTION is
+ a value containing the address of the function. */
+
+extern struct value *get_return_value (struct symbol *func_symbol,
+ struct value *function);
/* Prepare for execution command. TARGET is the target that will run
the command. BACKGROUND determines whether this is a foreground
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
+class inferior : public refcounted_object,
+ public intrusive_list_node<inferior>
{
public:
explicit inferior (int pid);
}
/* Unpush T from this inferior's target stack. */
- int unpush_target (struct target_ops *t)
- { return m_target_stack.unpush (t); }
+ int unpush_target (struct target_ops *t);
/* Returns true if T is pushed in this inferior's target stack. */
bool target_is_pushed (target_ops *t)
bool has_execution ()
{ return target_has_execution (this); }
- /* Pointer to next inferior in singly-linked list of inferiors. */
- struct inferior *next = NULL;
+ /* This inferior's thread list, sorted by creation order. */
+ intrusive_list<thread_info> thread_list;
- /* This inferior's thread list. */
- thread_info *thread_list = nullptr;
+ /* A map of ptid_t to thread_info*, for average O(1) ptid_t lookup.
+ Exited threads do not appear in the map. */
+ std::unordered_map<ptid_t, thread_info *, hash_ptid> ptid_thread_map;
/* Returns a range adapter covering the inferior's threads,
including exited threads. Used like this:
{ .... }
*/
inf_threads_range threads ()
- { return inf_threads_range (this->thread_list); }
+ { return inf_threads_range (this->thread_list.begin ()); }
/* Returns a range adapter covering the inferior's non-exited
threads. Used like this:
{ .... }
*/
inf_non_exited_threads_range non_exited_threads ()
- { return inf_non_exited_threads_range (this->thread_list); }
+ { return inf_non_exited_threads_range (this->thread_list.begin ()); }
/* Like inferior::threads(), but returns a range adapter that can be
used with range-for, safely. I.e., it is safe to delete the
delete f;
*/
inline safe_inf_threads_range threads_safe ()
- { return safe_inf_threads_range (this->thread_list); }
+ { return safe_inf_threads_range (this->thread_list.begin ()); }
+
+ /* Delete all threads in the thread list. If SILENT, exit threads
+ silently. */
+ void clear_thread_list (bool silent);
/* Continuations-related methods. A continuation is an std::function
to be called to finish the execution of a command when running
void add_continuation (std::function<void ()> &&cont);
void do_all_continuations ();
- /* Set/get file name for default use for standard in/out in the
- inferior. On Unix systems, we try to make TERMINAL_NAME the
- inferior's controlling terminal. If TERMINAL_NAME is nullptr or
- the empty string, then the inferior inherits GDB's terminal (or
- GDBserver's if spawning a remote process). */
- void set_tty (const char *terminal_name);
- const char *tty ();
+ /* Set/get file name for default use for standard in/out in the inferior.
+
+ On Unix systems, we try to make TERMINAL_NAME the inferior's controlling
+ terminal.
+
+ If TERMINAL_NAME is the empty string, then the inferior inherits GDB's
+ terminal (or GDBserver's if spawning a remote process). */
+ void set_tty (std::string terminal_name);
+ const std::string &tty ();
+
+ /* Set the argument string to use when running this inferior.
+
+ An empty string can be used to represent "no arguments". */
+ void set_args (std::string args)
+ {
+ m_args = std::move (args);
+ };
+
+ /* Get the argument string to use when running this inferior.
+
+ No arguments is represented by an empty string. */
+ const std::string &args () const
+ {
+ return m_args;
+ }
+
+ /* Set the inferior current working directory.
+
+ If CWD is empty, unset the directory. */
+ void set_cwd (std::string cwd)
+ {
+ m_cwd = std::move (cwd);
+ }
+
+ /* Get the inferior current working directory.
+
+ Return an empty string if the current working directory is not
+ specified. */
+ const std::string &cwd () const
+ {
+ return m_cwd;
+ }
/* Convenient handle (GDB inferior id). Unique across all
inferiors. */
/* The program space bound to this inferior. */
struct program_space *pspace = NULL;
- /* The arguments string to use when running. */
- gdb::unique_xmalloc_ptr<char> args;
-
- /* The size of elements in argv. */
- 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 = NULL;
-
- /* The current working directory that will be used when starting
- this inferior. */
- gdb::unique_xmalloc_ptr<char> cwd;
-
/* The terminal state as set by the last target_terminal::terminal_*
call. */
target_terminal_state terminal_state = target_terminal_state::is_ours;
exits or execs. */
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. */
- bool waiting_for_vfork_done = false;
+ /* If non-nullptr, points to a thread that called vfork and is now waiting
+ for a vfork child not under our control to be done with the shared memory
+ region, either by exiting or execing. */
+ thread_info *thread_waiting_for_vfork_done = nullptr;
/* True if we're in the process of detaching from this inferior. */
bool detaching = false;
target_stack m_target_stack;
/* The name of terminal device to use for I/O. */
- gdb::unique_xmalloc_ptr<char> m_terminal;
+ std::string m_terminal;
/* The list of continuations. */
std::list<std::function<void ()>> m_continuations;
+
+ /* The arguments string to use when running. */
+ std::string m_args;
+
+ /* The current working directory that will be used when starting
+ this inferior. */
+ std::string m_cwd;
};
/* Keep a registry of per-inferior data-pointers required by other GDB
/* Traverse all inferiors. */
-extern struct inferior *inferior_list;
+extern intrusive_list<inferior> inferior_list;
/* Pull in the internals of the inferiors ranges and iterators. Must
be done after struct inferior is defined. */
inline all_inferiors_safe_range
all_inferiors_safe ()
{
- return {};
+ return all_inferiors_safe_range (nullptr, inferior_list);
}
/* Returns a range representing all inferiors, suitable to use with
inline all_inferiors_range
all_inferiors (process_stratum_target *proc_target = nullptr)
{
- return all_inferiors_range (proc_target);
+ return all_inferiors_range (proc_target, inferior_list);
}
/* Return a range that can be used to walk over all inferiors with PID
inline all_non_exited_inferiors_range
all_non_exited_inferiors (process_stratum_target *proc_target = nullptr)
{
- return all_non_exited_inferiors_range (proc_target);
+ return all_non_exited_inferiors_range (proc_target, inferior_list);
}
/* Prune away automatically added inferiors that aren't required
/* Print the current selected inferior. */
extern void print_selected_inferior (struct ui_out *uiout);
+/* Switch to inferior NEW_INF, a new inferior, and unless
+ NO_CONNECTION is true, push the process_stratum_target of ORG_INF
+ to NEW_INF. */
+
+extern void switch_to_inferior_and_push_target
+ (inferior *new_inf, bool no_connection, inferior *org_inf);
+
#endif /* !defined (INFERIOR_H) */
projects / binutils-gdb.git / blobdiff