#include "defs.h"
#include <dlfcn.h>
#include "gdb_proc_service.h"
#include "nat/gdb_thread_db.h"
#include "gdb_vecs.h"
#include "bfd.h"
#include "command.h"
#include "gdbcmd.h"
#include "gdbthread.h"
#include "inferior.h"
#include "infrun.h"
#include "symfile.h"
#include "objfiles.h"
#include "target.h"
#include "regcache.h"
#include "solib.h"
#include "solib-svr4.h"
#include "gdbcore.h"
#include "observer.h"
#include "linux-nat.h"
#include "nat/linux-procfs.h"
#include "nat/linux-ptrace.h"
#include "nat/linux-osdata.h"
#include "auto-load.h"
#include "cli/cli-utils.h"
#include <signal.h>
#include <ctype.h>
#include "nat/linux-namespaces.h"
#include <algorithm>

Classes
struct	thread_db_info

struct	thread_db_thread_info

struct	callback_data

Macros
#define	TDB_VERBOSE_DLSYM(info, func) info->func ## _p = (func ## _ftype *) verbose_dlsym (info->handle, #func)

#define	TDB_DLSYM(info, func) info->func ## _p = (func ## _ftype *) dlsym (info->handle, #func)

#define	CHK(a)

Functions
static void	show_auto_load_thread_db (struct ui_file file, int from_tty, struct cmd_list_element c, const char *value)

static void	set_libthread_db_search_path (const char ignored, int from_tty, struct cmd_list_element c)

static void	show_libthread_db_debug (struct ui_file file, int from_tty, struct cmd_list_element c, const char *value)

static void	thread_db_find_new_threads_1 (ptid_t ptid)

static void	thread_db_find_new_threads_2 (ptid_t ptid, int until_no_new)

static void	check_thread_signals (void)

static struct thread_info *	record_thread (struct thread_db_info info, struct thread_info tp, ptid_t ptid, const td_thrhandle_t th_p, const td_thrinfo_t ti_p)

static struct thread_db_info *	add_thread_db_info (void *handle)

static struct thread_db_info *	get_thread_db_info (int pid)

static void	delete_thread_db_info (int pid)

static thread_db_thread_info *	get_thread_db_thread_info (thread_info *thread)

static const char *	thread_db_err_str (td_err_e err)

static struct thread_info *	thread_from_lwp (ptid_t ptid)

int	thread_db_notice_clone (ptid_t parent, ptid_t child)

static void *	verbose_dlsym (void handle, const char name)

static int	inferior_has_bug (const char *ver_symbol, int ver_major_min, int ver_minor_min)

static int	thread_db_find_new_threads_silently (ptid_t ptid)

static const char *	dladdr_to_soname (const void *addr)

static int	try_thread_db_load_1 (struct thread_db_info *info)

static int	try_thread_db_load (const char *library, int check_auto_load_safe)

static int	try_thread_db_load_from_pdir_1 (struct objfile obj, const char subdir)

static int	try_thread_db_load_from_pdir (const char *subdir)

static int	try_thread_db_load_from_sdir (void)

static int	try_thread_db_load_from_dir (const char *dir, size_t dir_len)

static int	thread_db_load_search (void)

static int	has_libpthread (void)

static int	thread_db_load (void)

void	check_for_thread_db (void)

static void	thread_db_new_objfile (struct objfile *objfile)

static void	check_pid_namespace_match (void)

static void	thread_db_inferior_created (struct target_ops *target, int from_tty)

static void	update_thread_state (thread_db_thread_info priv, const td_thrinfo_t ti_p)

static void	thread_db_detach (struct target_ops ops, const char args, int from_tty)

static ptid_t	thread_db_wait (struct target_ops ops, ptid_t ptid, struct target_waitstatus ourstatus, int options)

static void	thread_db_mourn_inferior (struct target_ops *ops)

static int	find_new_threads_callback (const td_thrhandle_t th_p, void data)

static int	find_new_threads_once (struct thread_db_info info, int iteration, td_err_e errp)

static void	thread_db_update_thread_list (struct target_ops *ops)

static const char *	thread_db_pid_to_str (struct target_ops *ops, ptid_t ptid)

static const char *	thread_db_extra_thread_info (struct target_ops self, struct thread_info info)

static struct thread_info *	thread_db_thread_handle_to_thread_info (struct target_ops ops, const gdb_byte thread_handle, int handle_len, struct inferior *inf)

static CORE_ADDR	thread_db_get_thread_local_address (struct target_ops *ops, ptid_t ptid, CORE_ADDR lm, CORE_ADDR offset)

static ptid_t	thread_db_get_ada_task_ptid (struct target_ops *self, long lwp, long thread)

static void	thread_db_resume (struct target_ops *ops, ptid_t ptid, int step, enum gdb_signal signo)

static int	info_auto_load_libthread_db_compare (const void ap, const void bp)

static void	info_auto_load_libthread_db (const char *args, int from_tty)

static void	init_thread_db_ops (void)

void	_initialize_thread_db (void)

Variables
static char *	libthread_db_search_path

static int	auto_load_thread_db = 1

static unsigned int	libthread_db_debug

static struct target_ops	thread_db_ops

static int	thread_signals

static sigset_t	thread_stop_set

static sigset_t	thread_print_set

struct thread_db_info *	thread_db_list

Macro Definition Documentation

◆ CHK

#define CHK ( a )

Value:

do                                  \
    {                                   \
      if ((a) == NULL)                          \
    return 0;                           \
  } while (0)

Referenced by try_thread_db_load_1().

◆ TDB_DLSYM

#define TDB_DLSYM	(	info,
		func
	)	info->func ## _p = (func ## _ftype *) dlsym (info->handle, #func)

Referenced by try_thread_db_load_1().

◆ TDB_VERBOSE_DLSYM

#define TDB_VERBOSE_DLSYM	(	info,
		func
	)	info->func ## _p = (func ## _ftype *) verbose_dlsym (info->handle, #func)

Referenced by try_thread_db_load_1().

Function Documentation

◆ _initialize_thread_db()

void _initialize_thread_db ( void )

◆ add_thread_db_info()

static struct thread_db_info* add_thread_db_info ( void * handle )

static

Definition at line 186 of file linux-thread-db.c.

References thread_db_info::handle, inferior_ptid, thread_db_info::need_stale_parent_threads_check, thread_db_info::next, thread_db_info::pid, ptid_get_pid(), target_has_execution, thread_db_list, and XCNEW.

Referenced by try_thread_db_load().

◆ check_for_thread_db()

void check_for_thread_db ( void )

Definition at line 978 of file linux-thread-db.c.

References thread_db_load().

Referenced by linux_child_follow_fork(), thread_db_inferior_created(), and thread_db_new_objfile().

◆ check_pid_namespace_match()

static void check_pid_namespace_match ( void )

static

Definition at line 1014 of file linux-thread-db.c.

References _, current_target, inferior_ptid, LINUX_NS_PID, linux_ns_same(), ptid_get_pid(), target_can_run, and warning().

Referenced by thread_db_inferior_created().

◆ check_thread_signals()

static void check_thread_signals ( void )

static

Definition at line 948 of file linux-thread-db.c.

References gdb_signal_from_host(), lin_thread_get_thread_signals(), signal_print_update(), signal_stop_update(), thread_print_set, thread_signals, and thread_stop_set.

Referenced by record_thread().

◆ delete_thread_db_info()

static void delete_thread_db_info ( int pid )

static

Definition at line 225 of file linux-thread-db.c.

References thread_db_info::next, pid, thread_db_list, and xfree().

Referenced by thread_db_detach(), thread_db_mourn_inferior(), thread_db_wait(), and try_thread_db_load().

◆ dladdr_to_soname()

static const char* dladdr_to_soname ( const void * addr )

static

Definition at line 492 of file linux-thread-db.c.

Referenced by try_thread_db_load(), and try_thread_db_load_1().

◆ find_new_threads_callback()

static int find_new_threads_callback	(	const td_thrhandle_t *	th_p,
		void *	data
	)

static

Definition at line 1172 of file linux-thread-db.c.

References _, err, error(), find_thread_ptid(), fprintf_unfiltered(), gdb_stdlog, callback_data::info, libthread_db_debug, linux_proc_get_tgid(), thread_db_info::need_stale_parent_threads_check, thread_db_info::pid, thread_info::priv, ptid_build(), record_thread(), TD_OK, thread_db_info::td_thr_get_info_p, thread_db_err_str(), td_thrinfo::ti_lid, and td_thrinfo::ti_tid.

Referenced by find_new_threads_once().

◆ find_new_threads_once()

static int find_new_threads_once	(	struct thread_db_info *	info,
		int	iteration,
		td_err_e *	errp
	)

static

Definition at line 1239 of file linux-thread-db.c.

References _, CATCH, END_CATCH, err, exception_fprintf(), find_new_threads_callback(), fprintf_unfiltered(), gdb_assert, gdb_stdlog, callback_data::info, libthread_db_debug, callback_data::new_threads, RETURN_MASK_ERROR, TD_ERR, TD_SIGNO_MASK, thread_db_info::td_ta_thr_iter_p, TD_THR_ANY_STATE, TD_THR_ANY_USER_FLAGS, TD_THR_LOWEST_PRIORITY, thread_db_info::thread_agent, and TRY.

Referenced by thread_db_find_new_threads_2().

◆ get_thread_db_info()

static struct thread_db_info* get_thread_db_info ( int pid )

static

Definition at line 208 of file linux-thread-db.c.

References thread_db_info::next, thread_db_info::pid, pid, and thread_db_list.

Referenced by thread_db_find_new_threads_2(), thread_db_get_thread_local_address(), thread_db_load(), thread_db_notice_clone(), thread_db_resume(), thread_db_update_thread_list(), thread_db_wait(), and thread_from_lwp().

◆ get_thread_db_thread_info()

static thread_db_thread_info* get_thread_db_thread_info ( thread_info * thread )

static

Definition at line 265 of file linux-thread-db.c.

References thread_info::priv.

Referenced by thread_db_extra_thread_info(), thread_db_get_thread_local_address(), thread_db_pid_to_str(), and thread_db_thread_handle_to_thread_info().

◆ has_libpthread()

static int has_libpthread ( void )

static

Definition at line 896 of file linux-thread-db.c.

References ALL_OBJFILES, libpthread_name_p(), and objfile_name().

Referenced by thread_db_load().

◆ inferior_has_bug()

static int inferior_has_bug	(	const char *	ver_symbol,
		int	ver_major_min,
		int	ver_minor_min
	)

static

Definition at line 411 of file linux-thread-db.c.

References BMSYMBOL_VALUE_ADDRESS, err, lookup_minimal_symbol(), bound_minimal_symbol::minsym, target_read_string(), version, and xfree().

Referenced by thread_db_find_new_threads_silently().

◆ info_auto_load_libthread_db()

static void info_auto_load_libthread_db	(	const char *	args,
		int	from_tty
	)

static

Definition at line 1583 of file linux-thread-db.c.

References _, auto_load_info_scripts_pattern_nl, current_uiout, do_cleanups(), error(), ui_out::field_string(), thread_db_info::filename, gdb_assert, info_auto_load_libthread_db_compare(), make_cleanup(), ui_out::message(), thread_db_info::next, thread_db_info::pid, pid, pids, qsort, skip_spaces(), ui_out::table_body(), ui_out::table_header(), ui_out::text(), thread_db_list, ui_left, xfree(), xmalloc(), XNEWVEC, and xsnprintf().

Referenced by _initialize_thread_db().

◆ info_auto_load_libthread_db_compare()

static int info_auto_load_libthread_db_compare	(	const void *	ap,
		const void *	bp
	)

static

Definition at line 1567 of file linux-thread-db.c.

References bp, thread_db_info::filename, and thread_db_info::pid.

Referenced by info_auto_load_libthread_db().

◆ init_thread_db_ops()

static void init_thread_db_ops ( void )

static

Definition at line 1708 of file linux-thread-db.c.

References complete_target_initialization(), OPS_MAGIC, tc_schedlock, thread_db_detach(), thread_db_extra_thread_info(), thread_db_get_ada_task_ptid(), thread_db_get_thread_local_address(), thread_db_mourn_inferior(), thread_db_ops, thread_db_pid_to_str(), thread_db_resume(), thread_db_thread_handle_to_thread_info(), thread_db_update_thread_list(), thread_db_wait(), thread_stratum, target_ops::to_detach, target_ops::to_doc, target_ops::to_extra_thread_info, target_ops::to_get_ada_task_ptid, target_ops::to_get_thread_local_address, target_ops::to_has_thread_control, target_ops::to_longname, target_ops::to_magic, target_ops::to_mourn_inferior, target_ops::to_pid_to_str, target_ops::to_resume, target_ops::to_shortname, target_ops::to_stratum, target_ops::to_thread_handle_to_thread_info, target_ops::to_update_thread_list, and target_ops::to_wait.

Referenced by _initialize_thread_db().

◆ record_thread()

static struct thread_info * record_thread	(	struct thread_db_info *	info,
		struct thread_info *	tp,
		ptid_t	ptid,
		const td_thrhandle_t *	th_p,
		const td_thrinfo_t *	ti_p
	)

static

Definition at line 1060 of file linux-thread-db.c.

References add_thread_with_info(), check_thread_signals(), thread_info::priv, thread_info::ptid, thread_info::state, target_has_execution, THREAD_EXITED, td_thrinfo::ti_tid, and update_thread_state().

Referenced by find_new_threads_callback(), and thread_from_lwp().

◆ set_libthread_db_search_path()

static void set_libthread_db_search_path	(	const char *	ignored,
		int	from_tty,
		struct cmd_list_element *	c
	)

static

Definition at line 95 of file linux-thread-db.c.

References LIBTHREAD_DB_SEARCH_PATH, libthread_db_search_path, and xfree().

Referenced by _initialize_thread_db().

◆ show_auto_load_thread_db()

static void show_auto_load_thread_db	(	struct ui_file *	file,
		int	from_tty,
		struct cmd_list_element *	c,
		const char *	value
	)

static

Definition at line 86 of file linux-thread-db.c.

References _, and fprintf_filtered().

Referenced by _initialize_thread_db().

◆ show_libthread_db_debug()

static void show_libthread_db_debug	(	struct ui_file *	file,
		int	from_tty,
		struct cmd_list_element *	c,
		const char *	value
	)

static

Definition at line 110 of file linux-thread-db.c.

References _, and fprintf_filtered().

Referenced by _initialize_thread_db().

◆ thread_db_detach()

static void thread_db_detach	(	struct target_ops *	ops,
		const char *	args,
		int	from_tty
	)

static

Definition at line 1093 of file linux-thread-db.c.

References delete_thread_db_info(), find_target_beneath(), inferior_ptid, ptid_get_pid(), thread_db_list, thread_db_ops, target_ops::to_detach, and unpush_target().

Referenced by init_thread_db_ops().

◆ thread_db_err_str()

static const char* thread_db_err_str ( td_err_e err )

static

Definition at line 271 of file linux-thread-db.c.

References err, TD_BADKEY, TD_BADPH, TD_BADSH, TD_BADTA, TD_BADTH, TD_DBERR, TD_ERR, TD_MALLOC, TD_NOAPLIC, TD_NOCAPAB, TD_NOEVENT, TD_NOFPREGS, TD_NOLIBTHREAD, TD_NOLWP, TD_NOMSG, TD_NOSV, TD_NOTALLOC, TD_NOTHR, TD_NOTLS, TD_NOTSD, TD_NOXREGS, TD_OK, TD_PARTIALREG, and TD_VERSION.

Referenced by find_new_threads_callback(), thread_db_find_new_threads_2(), thread_db_get_thread_local_address(), thread_from_lwp(), and try_thread_db_load_1().

◆ thread_db_extra_thread_info()

static const char* thread_db_extra_thread_info	(	struct target_ops *	self,
		struct thread_info *	info
	)

static

Definition at line 1399 of file linux-thread-db.c.

References thread_db_thread_info::dying, get_thread_db_thread_info(), and thread_info::priv.

Referenced by init_thread_db_ops().

◆ thread_db_find_new_threads_1()

static void thread_db_find_new_threads_1 ( ptid_t ptid )

static

Definition at line 1322 of file linux-thread-db.c.

References thread_db_find_new_threads_2().

Referenced by thread_db_update_thread_list().

◆ thread_db_find_new_threads_2()

static void thread_db_find_new_threads_2	(	ptid_t	ptid,
		int	until_no_new
	)

static

Definition at line 1290 of file linux-thread-db.c.

References _, err, error(), find_new_threads_once(), get_thread_db_info(), thread_db_info::proc_handle, ps_prochandle::ptid, ptid_get_pid(), TD_OK, and thread_db_err_str().

Referenced by thread_db_find_new_threads_1(), and thread_db_find_new_threads_silently().

◆ thread_db_find_new_threads_silently()

static int thread_db_find_new_threads_silently ( ptid_t ptid )

static

Definition at line 444 of file linux-thread-db.c.

References _, CATCH, END_CATCH, exception_fprintf(), gdb_stderr, gdb_stdlog, inferior_has_bug(), libthread_db_debug, RETURN_MASK_ERROR, target_has_execution, thread_db_find_new_threads_2(), and TRY.

Referenced by try_thread_db_load_1().

◆ thread_db_get_ada_task_ptid()

static ptid_t thread_db_get_ada_task_ptid	(	struct target_ops *	self,
		long	lwp,
		long	thread
	)

static

Definition at line 1535 of file linux-thread-db.c.

References inferior_ptid, selftests::ptid::lwp, ptid_build(), and ptid_get_pid().

Referenced by init_thread_db_ops().

◆ thread_db_get_thread_local_address()

static CORE_ADDR thread_db_get_thread_local_address	(	struct target_ops *	ops,
		ptid_t	ptid,
		CORE_ADDR	lm,
		CORE_ADDR	offset
	)

static

◆ thread_db_inferior_created()

static void thread_db_inferior_created	(	struct target_ops *	target,
		int	from_tty
	)

static

Definition at line 1038 of file linux-thread-db.c.

References check_for_thread_db(), and check_pid_namespace_match().

Referenced by _initialize_thread_db().

◆ thread_db_load()

static int thread_db_load ( void )

static

Definition at line 911 of file linux-thread-db.c.

References _, core_bfd, current_target, get_thread_db_info(), has_libpthread(), inferior_ptid, ptid_get_pid(), target_can_run, target_has_registers, thread_db_load_search(), and warning().

Referenced by check_for_thread_db().

◆ thread_db_load_search()

static int thread_db_load_search ( void )

static

Definition at line 832 of file linux-thread-db.c.

References _, do_cleanups(), fprintf_unfiltered(), gdb_stdlog, libthread_db_debug, libthread_db_search_path, make_cleanup(), make_cleanup_free_char_ptr_vec(), null_cleanup(), try_thread_db_load_from_dir(), try_thread_db_load_from_pdir(), try_thread_db_load_from_sdir(), VEC, VEC_iterate, xfree(), and xmalloc().

Referenced by thread_db_load().

◆ thread_db_mourn_inferior()

static void thread_db_mourn_inferior ( struct target_ops * ops )

static

Definition at line 1152 of file linux-thread-db.c.

References delete_thread_db_info(), find_target_beneath(), inferior_ptid, ptid_get_pid(), thread_db_list, target_ops::to_mourn_inferior, and unpush_target().

Referenced by init_thread_db_ops().

◆ thread_db_new_objfile()

static void thread_db_new_objfile ( struct objfile * objfile )

static

Definition at line 988 of file linux-thread-db.c.

References check_for_thread_db(), objfile::flags, libpthread_name_p(), OBJF_MAINLINE, objfile_name(), and objfile::separate_debug_objfile_backlink.

Referenced by _initialize_thread_db().

◆ thread_db_notice_clone()

int thread_db_notice_clone	(	ptid_t	parent,
		ptid_t	child
	)

Definition at line 379 of file linux-thread-db.c.

References get_thread_db_info(), ptid_get_pid(), and thread_from_lwp().

Referenced by linux_handle_extended_wait().

◆ thread_db_pid_to_str()

static const char* thread_db_pid_to_str	(	struct target_ops *	ops,
		ptid_t	ptid
	)

static

Definition at line 1375 of file linux-thread-db.c.

References target_ops::beneath, find_target_beneath(), find_thread_ptid(), get_thread_db_thread_info(), thread_info::priv, thread_info::ptid, ptid_get_lwp(), thread_db_thread_info::tid, and target_ops::to_pid_to_str.

Referenced by init_thread_db_ops().

◆ thread_db_resume()

static void thread_db_resume	(	struct target_ops *	ops,
		ptid_t	ptid,
		int	step,
		enum gdb_signal	signo
	)

static

Definition at line 1542 of file linux-thread-db.c.

References target_ops::beneath, find_target_beneath(), get_thread_db_info(), inferior_ptid, minus_one_ptid, thread_db_info::need_stale_parent_threads_check, ptid_equal(), ptid_get_pid(), and target_ops::to_resume.

Referenced by init_thread_db_ops().

◆ thread_db_thread_handle_to_thread_info()

static struct thread_info* thread_db_thread_handle_to_thread_info	(	struct target_ops *	ops,
		const gdb_byte *	thread_handle,
		int	handle_len,
		struct inferior *	inf
	)