thread-db.c File Reference

#include "server.h"
#include "linux-low.h"
#include "gdb_proc_service.h"
#include "nat/gdb_thread_db.h"
#include "gdb_vecs.h"
#include "nat/linux-procfs.h"
#include "common/scoped_restore.h"
#include <dlfcn.h>
#include <limits.h>
#include <ctype.h>

Go to the source code of this file.

Classes
struct	thread_db

Macros
#define	CHK(required, a)
#define	TDB_DLSYM(tdb, func)   tdb->func ## _p = (func ## _ftype *) dlsym (tdb->handle, #func)

Functions
static int	find_one_thread (ptid_t)
static int	find_new_threads_callback (const td_thrhandle_t *th_p, void *data)
static const char *	thread_db_err_str (td_err_e err)
static int	attach_thread (const td_thrhandle_t *th_p, td_thrinfo_t *ti_p)
static int	maybe_attach_thread (const td_thrhandle_t *th_p, td_thrinfo_t *ti_p, int *counter)
static void	thread_db_find_new_threads (void)
static void	thread_db_look_up_symbols (void)
int	thread_db_look_up_one_symbol (const char *name, CORE_ADDR *addrp)
int	thread_db_get_tls_address (struct thread_info *thread, CORE_ADDR offset, CORE_ADDR load_module, CORE_ADDR *address)
bool	thread_db_thread_handle (ptid_t ptid, gdb_byte **handle, int *handle_len)
static int	try_thread_db_load_1 (void *handle)
static int	try_thread_db_load (const char *library)
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)
int	thread_db_init (void)
static void	switch_to_process (struct process_info *proc)
static void	disable_thread_event_reporting (struct process_info *proc)
void	thread_db_detach (struct process_info *proc)
void	thread_db_mourn (struct process_info *proc)
int	thread_db_handle_monitor_command (char *mon)
void	thread_db_notice_clone (struct thread_info *parent_thr, ptid_t child_ptid)

Variables
int	debug_threads
static char *	libthread_db_search_path

Macro Definition Documentation

CHK

#define CHK	(		required,
			a
	)

Value:

do                              \
    {                               \
      if ((a) == NULL)                      \
    {                           \
      if (debug_threads)                    \
        debug_printf ("dlsym: %s\n", dlerror ());       \
      if (required)                     \
        {                           \
          free (tdb);                   \
          proc->priv->thread_db = NULL;         \
          return 0;                     \
        }                           \
    }                           \
    }                               \
  while (0)

Referenced by try_thread_db_load_1().

TDB_DLSYM

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

Referenced by try_thread_db_load_1().

Function Documentation

attach_thread()

static int attach_thread ( const td_thrhandle_t *  th_p, td_thrinfo_t *  ti_p  )

static

Definition at line 214 of file thread-db.c.

References current_process(), debug_printf(), debug_threads, find_lwp_pid(), gdb_assert, linux_attach_lwp(), linux_ptrace_attach_fail_reason_string(), process_info::pid, pid_of(), ptid_build(), td_thrinfo::ti_lid, td_thrinfo::ti_tid, and warning().

Referenced by maybe_attach_thread().

disable_thread_event_reporting()

static void disable_thread_event_reporting ( struct process_info *  proc )

static

Definition at line 781 of file thread-db.c.

References current_thread, thread_db::handle, process_info::priv, switch_to_process(), td_event_fillset, td_ta_clear_event(), thread_db::thread_agent, and process_info_private::thread_db.

Referenced by thread_db_detach().

find_new_threads_callback()

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

static

Definition at line 267 of file thread-db.c.

References current_process(), debug_printf(), debug_threads, error(), maybe_attach_thread(), process_info::priv, TD_OK, thread_db::td_thr_get_info_p, TD_THR_UNKNOWN, TD_THR_ZOMBIE, process_info_private::thread_db, thread_db_err_str(), td_thrinfo::ti_lid, td_thrinfo::ti_state, and td_thrinfo::ti_tid.

Referenced by thread_db_find_new_threads().

find_one_thread()

static int find_one_thread ( ptid_t  ptid )

static

Definition at line 163 of file thread-db.c.

References current_process(), debug_printf(), debug_threads, error(), find_thread_ptid(), get_thread_lwp, process_info::priv, ptid_get_lwp(), TD_OK, thread_db::td_ta_map_lwp2thr_p, thread_db::td_thr_get_info_p, thread_db::thread_agent, process_info_private::thread_db, thread_db_err_str(), td_thrinfo::ti_lid, td_thrinfo::ti_tid, and warning().

Referenced by thread_db_find_new_threads(), thread_db_get_tls_address(), thread_db_notice_clone(), and thread_db_thread_handle().

maybe_attach_thread()

static int maybe_attach_thread ( const td_thrhandle_t *  th_p, td_thrinfo_t *  ti_p, int *  counter  )

static

Definition at line 248 of file thread-db.c.

References attach_thread(), find_lwp_pid(), pid_to_ptid(), and td_thrinfo::ti_lid.

Referenced by find_new_threads_callback().

switch_to_process()

static void switch_to_process ( struct process_info *  proc )

static

Definition at line 771 of file thread-db.c.

References current_thread, find_any_thread_of_pid(), process_info::pid, and pid_of().

Referenced by disable_thread_event_reporting().

thread_db_detach()

void thread_db_detach

(

struct process_info *

proc

)

Definition at line 815 of file thread-db.c.

References disable_thread_event_reporting(), process_info::priv, and process_info_private::thread_db.

Referenced by linux_detach().

thread_db_err_str()

static const char* thread_db_err_str ( td_err_e  err )

static

Definition at line 74 of file thread-db.c.

References 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_NOTHR, TD_NOTSD, TD_NOXREGS, TD_OK, TD_PARTIALREG, TD_VERSION, and xsnprintf().

Referenced by find_new_threads_callback(), find_one_thread(), thread_db_find_new_threads(), and try_thread_db_load_1().

thread_db_find_new_threads()

static void thread_db_find_new_threads ( void  )

static

Definition at line 307 of file thread-db.c.

References current_process(), current_ptid, debug_printf(), debug_threads, error(), find_new_threads_callback(), find_one_thread(), process_info::priv, TD_OK, TD_SIGNO_MASK, thread_db::td_ta_thr_iter_p, TD_THR_ANY_STATE, TD_THR_ANY_USER_FLAGS, TD_THR_LOWEST_PRIORITY, thread_db::thread_agent, process_info_private::thread_db, and thread_db_err_str().

Referenced by thread_db_init().

thread_db_get_tls_address()

int thread_db_get_tls_address	(	struct thread_info *	thread,
		CORE_ADDR	offset,
		CORE_ADDR	load_module,
		CORE_ADDR *	address
	)

Definition at line 384 of file thread-db.c.

References thread_db::all_symbols_looked_up, current_thread, find_one_thread(), get_thread_lwp, get_thread_process(), thread_info::id, offset, process_info::priv, TD_ERR, TD_NOTHR, TD_OK, thread_db::td_thr_tls_get_addr_p, thread_db::td_thr_tlsbase_p, and process_info_private::thread_db.

thread_db_handle_monitor_command()

int thread_db_handle_monitor_command

(

char *

mon

)

Definition at line 857 of file thread-db.c.

References free(), LIBTHREAD_DB_SEARCH_PATH, libthread_db_search_path, monitor_output(), and xstrdup().

thread_db_init()

int thread_db_init

(

void

)

Definition at line 735 of file thread-db.c.

References current_process(), linux_proc_task_list_dir_exists(), pid_of(), thread_db_find_new_threads(), thread_db_load_search(), and thread_db_look_up_symbols().

Referenced by linux_look_up_symbols().

thread_db_load_search()

static int thread_db_load_search ( void  )

static

Definition at line 682 of file thread-db.c.

References debug_printf(), debug_threads, free_char_ptr_vec(), LIBTHREAD_DB_SEARCH_PATH, libthread_db_search_path, try_thread_db_load_from_dir(), try_thread_db_load_from_sdir(), VEC, VEC_iterate, and xstrdup().

Referenced by thread_db_init().

thread_db_look_up_one_symbol()

int thread_db_look_up_one_symbol	(	const char *	name,
		CORE_ADDR *	addrp
	)

Definition at line 370 of file thread-db.c.

References thread_db::all_symbols_looked_up, current_process(), look_up_one_symbol(), name, process_info::priv, and process_info_private::thread_db.

Referenced by ps_pglobal_lookup().

thread_db_look_up_symbols()

static void thread_db_look_up_symbols ( void  )

static

Definition at line 355 of file thread-db.c.

References thread_db::all_symbols_looked_up, current_process(), look_up_one_symbol(), process_info::priv, thread_db::td_symbol_list_p, and process_info_private::thread_db.

Referenced by thread_db_init().

thread_db_mourn()

void thread_db_mourn

(

struct process_info *

proc

)

Definition at line 828 of file thread-db.c.

References free(), thread_db::handle, process_info::priv, td_ta_delete(), thread_db::thread_agent, and process_info_private::thread_db.

Referenced by linux_mourn().

thread_db_notice_clone()

void thread_db_notice_clone	(	struct thread_info *	parent_thr,
		ptid_t	child_ptid
	)

Definition at line 892 of file thread-db.c.

References thread_db::all_symbols_looked_up, current_thread, find_one_thread(), get_thread_process(), make_scoped_restore(), process_info::priv, process_info_private::thread_db, and warning().

Referenced by handle_extended_wait().

thread_db_thread_handle()

bool thread_db_thread_handle	(	ptid_t	ptid,
		gdb_byte **	handle,
		int *	handle_len
	)

Definition at line 450 of file thread-db.c.

References find_one_thread(), find_thread_ptid(), gdb_assert, get_thread_lwp, get_thread_process(), thread_info::id, process_info::priv, lwp_info::thread, and process_info_private::thread_db.

try_thread_db_load()

static int try_thread_db_load ( const char *  library )

static

Definition at line 601 of file thread-db.c.

References debug_printf(), debug_threads, td_init(), and try_thread_db_load_1().

Referenced by try_thread_db_load_from_dir(), and try_thread_db_load_from_sdir().

try_thread_db_load_1()

static int try_thread_db_load_1 ( void *  handle )

static

Definition at line 518 of file thread-db.c.

References CHK, current_process(), debug_printf(), debug_threads, free(), gdb_assert, thread_db::handle, process_info::priv, thread_db::proc_handle, TD_OK, td_symbol_list(), td_ta_map_lwp2thr(), td_ta_new(), thread_db::td_ta_new_p, td_ta_thr_iter(), td_thr_get_info(), td_thr_tls_get_addr(), td_thr_tlsbase(), TDB_DLSYM, thread_db::thread_agent, process_info_private::thread_db, thread_db_err_str(), and XCNEW.

Referenced by try_thread_db_load().

try_thread_db_load_from_dir()

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

static

Definition at line 655 of file thread-db.c.

References _, free(), LIBTHREAD_DB_SO, try_thread_db_load(), warning(), and xmalloc().

Referenced by thread_db_load_search().

try_thread_db_load_from_sdir()

static int try_thread_db_load_from_sdir ( void  )

static

Definition at line 646 of file thread-db.c.

References LIBTHREAD_DB_SO, and try_thread_db_load().

Referenced by thread_db_load_search().

Variable Documentation

debug_threads

int debug_threads

Definition at line 24 of file debug.c.

Referenced by add_insns(), attach_proc_task_lwp_callback(), attach_thread(), ATTRIBUTE_PRINTF(), captured_main(), check_zombie_leaders(), complete_ongoing_step_over(), delete_fast_tracepoint_jump(), delete_lwp(), delete_raw_breakpoint(), dequeue_one_deferred_signal(), enqueue_one_deferred_signal(), find_new_threads_callback(), find_one_thread(), finish_step_over(), gdb_no_commands_at_breakpoint_z_type(), get_detach_signal(), get_pc(), get_syscall_trapinfo(), handle_detach(), handle_extended_wait(), handle_monitor_command(), handle_serial_event(), handle_target_event(), handle_tracepoint_bkpts(), handle_tracepoints(), insert_memory_breakpoint(), kill_one_lwp_callback(), kill_wait_lwp(), linux_async(), linux_attach_lwp(), linux_detach_one_lwp(), linux_get_pc_32bit(), linux_get_pc_64bit(), linux_kill(), linux_kill_one_lwp(), linux_low_filter_event(), linux_resume(), linux_resume_one_lwp_throw(), linux_resume_one_thread(), linux_set_resume_request(), linux_stabilize_threads(), linux_wait_1(), linux_wait_for_event_filtered(), linux_write_memory(), linux_xfer_siginfo(), lwp_suspended_inc(), lynx_debug(), lynx_ptrace(), maybe_move_out_of_jump_pad(), move_out_of_jump_pad_callback(), need_step_over_p(), nto_trace(), prefork_hook(), proceed_all_lwps(), proceed_one_lwp(), process_point_options(), queue_stop_reply_callback(), reinsert_breakpoints_at(), reinsert_fast_tracepoint_jumps_at(), reinsert_raw_breakpoint(), remove_memory_breakpoint(), resume_stopped_resumed_lwps(), save_stop_reason(), select_event_lwp(), send_sigstop(), set_fast_tracepoint_jump(), set_raw_breakpoint_at(), sigchld_handler(), single_step(), start_step_over(), stop_all_lwps(), thread_db_find_new_threads(), thread_db_load_search(), thread_still_has_status_pending_p(), trace_buffer_alloc(), tracepoint_look_up_symbols(), try_thread_db_load(), try_thread_db_load_1(), uninsert_breakpoints_at(), uninsert_fast_tracepoint_jumps_at(), uninsert_raw_breakpoint(), unstop_all_lwps(), upload_fast_traceframes(), and wait_for_sigstop().

libthread_db_search_path

char* libthread_db_search_path

static

Definition at line 68 of file thread-db.c.

Referenced by thread_db_handle_monitor_command(), and thread_db_load_search().