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Sync with debugger code in libthr.

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This commit is contained in:
davidxu 2005-04-12 03:03:16 +00:00
parent 9a450de5e5
commit d4b0e7aa18
4 changed files with 173 additions and 46 deletions
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10
lib/libthread_db/libc_r_db.c
View File

@ -58,7 +58,7 @@ libc_r_db_init()
static td_err_e
libc_r_db_ta_clear_event(const td_thragent_t *ta, td_thr_events_t *ev)
{
return (TD_ERR);
return (0);
}
static td_err_e
@ -160,7 +160,7 @@ libc_r_db_ta_new(struct ps_prochandle *ph, td_thragent_t **ta_p)
static td_err_e
libc_r_db_ta_set_event(const td_thragent_t *ta, td_thr_events_t *ev)
{
return (TD_ERR);
return (0);
}
static td_err_e
@ -192,13 +192,13 @@ libc_r_db_ta_thr_iter(const td_thragent_t *ta, td_thr_iter_f *cb, void *data,
static td_err_e
libc_r_db_thr_clear_event(const td_thrhandle_t *th, td_thr_events_t *ev)
{
return (TD_ERR);
return (0);
}
static td_err_e
libc_r_db_thr_event_enable(const td_thrhandle_t *th, int oo)
{
return (TD_ERR);
return (0);
}
static td_err_e
@ -281,7 +281,7 @@ libc_r_db_thr_getgregs(const td_thrhandle_t *th, prgregset_t r)
static td_err_e
libc_r_db_thr_set_event(const td_thrhandle_t *th, td_thr_events_t *ev)
{
return (TD_ERR);
return (0);
}
static td_err_e

12
lib/libthread_db/libpthread_db.c
View File

@ -428,21 +428,21 @@ static td_err_e
pt_ta_event_addr(const td_thragent_t *ta, td_event_e event, td_notify_t *ptr)
{
TDBG_FUNC();
return (TD_NOEVENT);
return (TD_ERR);
}
static td_err_e
pt_ta_set_event(const td_thragent_t *ta, td_thr_events_t *events)
{
TDBG_FUNC();
return (TD_ERR);
return (0);
}
static td_err_e
pt_ta_clear_event(const td_thragent_t *ta, td_thr_events_t *events)
{
TDBG_FUNC();
return (TD_ERR);
return (0);
}
static td_err_e
@ -821,21 +821,21 @@ static td_err_e
pt_thr_event_enable(const td_thrhandle_t *th, int en)
{
TDBG_FUNC();
return (TD_ERR);
return (0);
}
static td_err_e
pt_thr_set_event(const td_thrhandle_t *th, td_thr_events_t *setp)
{
TDBG_FUNC();
return (TD_ERR);
return (0);
}
static td_err_e
pt_thr_clear_event(const td_thrhandle_t *th, td_thr_events_t *setp)
{
TDBG_FUNC();
return (TD_ERR);
return (0);
}
static td_err_e

196
lib/libthread_db/libthr_db.c
View File

@ -39,6 +39,8 @@ __FBSDID("$FreeBSD$");
#include "thread_db_int.h"
#define TERMINATED 1
struct pt_map {
int used;
lwpid_t lwp;
@ -49,24 +51,27 @@ struct td_thragent {
TD_THRAGENT_FIELDS;
psaddr_t libthr_debug_addr;
psaddr_t thread_list_addr;
psaddr_t thread_listgen_addr;
psaddr_t thread_active_threads_addr;
psaddr_t thread_keytable_addr;
int thread_inited;
psaddr_t thread_last_event_addr;
psaddr_t thread_event_mask_addr;
psaddr_t thread_bp_create_addr;
psaddr_t thread_bp_death_addr;
int thread_off_dtv;
int thread_off_tlsindex;
int thread_off_attr_flags;
int thread_size_key;
int thread_off_tcb;
int thread_off_linkmap;
int thread_off_thr_locklevel;
int thread_off_next;
int thread_off_state;
int thread_off_isdead;
int thread_off_tid;
int thread_max_keys;
int thread_off_key_allocated;
int thread_off_key_destructor;
int thread_off_report_events;
int thread_off_event_mask;
int thread_off_event_buf;
int thread_state_zoombie;
int thread_state_running;
struct pt_map *map;
@ -131,7 +136,7 @@ pt_map_thread(const td_thragent_t *const_ta, long lwp, psaddr_t pt)
sizeof(struct pt_map) * ta->map_len * 2);
if (new == NULL)
return (-1);
memset(new + ta->map_len, '\0', sizeof(struct pt_map) *
memset(new + ta->map_len, 0, sizeof(struct pt_map) *
ta->map_len);
first = ta->map_len;
ta->map = new;
@ -195,6 +200,10 @@ pt_ta_new(struct ps_prochandle *ph, td_thragent_t **pta)
LOOKUP_SYM(ph, "_thread_list", &ta->thread_list_addr);
LOOKUP_SYM(ph, "_thread_active_threads",&ta->thread_active_threads_addr);
LOOKUP_SYM(ph, "_thread_keytable", &ta->thread_keytable_addr);
LOOKUP_SYM(ph, "_thread_last_event", &ta->thread_last_event_addr);
LOOKUP_SYM(ph, "_thread_event_mask", &ta->thread_event_mask_addr);
LOOKUP_SYM(ph, "_thread_bp_create", &ta->thread_bp_create_addr);
LOOKUP_SYM(ph, "_thread_bp_death", &ta->thread_bp_death_addr);
LOOKUP_VAL(ph, "_thread_off_dtv", &ta->thread_off_dtv);
LOOKUP_VAL(ph, "_thread_off_tlsindex", &ta->thread_off_tlsindex);
LOOKUP_VAL(ph, "_thread_off_attr_flags", &ta->thread_off_attr_flags);
@ -202,15 +211,16 @@ pt_ta_new(struct ps_prochandle *ph, td_thragent_t **pta)
LOOKUP_VAL(ph, "_thread_off_tcb", &ta->thread_off_tcb);
LOOKUP_VAL(ph, "_thread_off_tid", &ta->thread_off_tid);
LOOKUP_VAL(ph, "_thread_off_linkmap", &ta->thread_off_linkmap);
LOOKUP_VAL(ph, "_thread_off_thr_locklevel", &ta->thread_off_thr_locklevel);
LOOKUP_VAL(ph, "_thread_off_next", &ta->thread_off_next);
LOOKUP_VAL(ph, "_thread_off_state", &ta->thread_off_state);
LOOKUP_VAL(ph, "_thread_off_isdead", &ta->thread_off_isdead);
LOOKUP_VAL(ph, "_thread_max_keys", &ta->thread_max_keys);
LOOKUP_VAL(ph, "_thread_off_key_allocated", &ta->thread_off_key_allocated);
LOOKUP_VAL(ph, "_thread_off_key_destructor", &ta->thread_off_key_destructor);
LOOKUP_VAL(ph, "_thread_state_running", &ta->thread_state_running);
LOOKUP_VAL(ph, "_thread_state_zoombie", &ta->thread_state_zoombie);
LOOKUP_VAL(ph, "_thread_off_report_events", &ta->thread_off_report_events);
LOOKUP_VAL(ph, "_thread_off_event_mask", &ta->thread_off_event_mask);
LOOKUP_VAL(ph, "_thread_off_event_buf", &ta->thread_off_event_buf);
dbg = getpid();
/*
* If this fails it probably means we're debugging a core file and
@ -250,7 +260,8 @@ pt_ta_map_id2thr(const td_thragent_t *ta, thread_t id, td_thrhandle_t *th)
prgregset_t gregs;
TAILQ_HEAD(, pthread) thread_list;
psaddr_t pt;
int ret, isdead;
int ret;
long lwp;
TDBG_FUNC();
@ -285,11 +296,11 @@ pt_ta_map_id2thr(const td_thragent_t *ta, thread_t id, td_thrhandle_t *th)
return (TD_NOTHR);
}
ret = ps_pread(ta->ph,
pt + ta->thread_off_isdead,
&isdead, sizeof(isdead));
pt + ta->thread_off_tid,
&lwp, sizeof(long));
if (ret != 0)
return (P2T(ret));
if (isdead) {
if (lwp == TERMINATED) {
ta->map[id].used = 0;
return (TD_NOTHR);
}
@ -362,24 +373,18 @@ pt_ta_thr_iter(const td_thragent_t *ta,
pt = (psaddr_t)thread_list.tqh_first;
while (pt != 0) {
ret = ps_pread(ta->ph, pt + ta->thread_off_isdead, &isdead,
sizeof(isdead));
ret = ps_pread(ta->ph, pt + ta->thread_off_tid, &tmp_lwp,
sizeof(tmp_lwp));
if (ret != 0)
return (P2T(ret));
if (!isdead) {
ret = ps_pread(ta->ph, pt + ta->thread_off_tid, &tmp_lwp,
sizeof(tmp_lwp));
if (ret != 0)
return (P2T(ret));
if (tmp_lwp != 0) {
th.th_ta = ta;
th.th_tid = pt_map_thread(ta, tmp_lwp, pt);
th.th_thread = pt;
if (th.th_tid == -1)
return (TD_MALLOC);
if ((*callback)(&th, cbdata_p))
return (TD_DBERR);
}
if (tmp_lwp != 0 && tmp_lwp != TERMINATED) {
th.th_ta = ta;
th.th_tid = pt_map_thread(ta, tmp_lwp, pt);
th.th_thread = pt;
if (th.th_tid == -1)
return (TD_MALLOC);
if ((*callback)(&th, cbdata_p))
return (TD_DBERR);
}
/* get next thread */
ret = ps_pread(ta->ph, pt + ta->thread_off_next, &pt,
@ -429,28 +434,93 @@ static td_err_e
pt_ta_event_addr(const td_thragent_t *ta, td_event_e event, td_notify_t *ptr)
{
TDBG_FUNC();
return (TD_NOEVENT);
switch (event) {
case TD_CREATE:
ptr->type = NOTIFY_BPT;
ptr->u.bptaddr = ta->thread_bp_create_addr;
return (0);
case TD_DEATH:
ptr->type = NOTIFY_BPT;
ptr->u.bptaddr = ta->thread_bp_death_addr;
return (0);
default:
return (TD_ERR);
}
}
static td_err_e
pt_ta_set_event(const td_thragent_t *ta, td_thr_events_t *events)
{
int ret;
td_thr_events_t mask;
TDBG_FUNC();
return (TD_ERR);
ret = ps_pread(ta->ph, ta->thread_event_mask_addr, &mask,
sizeof(mask));
if (ret != 0)
return (P2T(ret));
mask |= *events;
ret = ps_pwrite(ta->ph, ta->thread_event_mask_addr, &mask,
sizeof(mask));
return (P2T(ret));
}
static td_err_e
pt_ta_clear_event(const td_thragent_t *ta, td_thr_events_t *events)
{
int ret;
td_thr_events_t mask;
TDBG_FUNC();
return (TD_ERR);
ret = ps_pread(ta->ph, ta->thread_event_mask_addr, &mask,
sizeof(mask));
if (ret != 0)
return (P2T(ret));
mask &= ~*events;
ret = ps_pwrite(ta->ph, ta->thread_event_mask_addr, &mask,
sizeof(mask));
return (P2T(ret));
}
static td_err_e
pt_ta_event_getmsg(const td_thragent_t *ta, td_event_msg_t *msg)
{
static td_thrhandle_t handle;
psaddr_t pt, pt_temp;
long lwp;
int ret;
td_thr_events_e tmp;
TDBG_FUNC();
return (TD_NOMSG);
ret = ps_pread(ta->ph, ta->thread_last_event_addr, &pt, sizeof(pt));
if (ret != 0)
return (P2T(ret));
if (pt == NULL)
return (TD_NOMSG);
/* At the time, libthr only reports event once a time. */
pt_temp = NULL;
ps_pwrite(ta->ph, ta->thread_last_event_addr, &pt_temp, sizeof(pt_temp));
ret = ps_pread(ta->ph, pt + ta->thread_off_event_buf, msg, sizeof(*msg));
if (ret != 0)
return (P2T(ret));
if (msg->event == 0)
return (TD_NOMSG);
/* clear event */
tmp = 0;
ps_pwrite(ta->ph, pt + ta->thread_off_event_buf, &tmp, sizeof(tmp));
pt = (psaddr_t)msg->th_p;
ret = ps_pread(ta->ph, pt + ta->thread_off_tid, &lwp, sizeof(lwp));
if (ret != 0)
return (P2T(ret));
handle.th_ta = ta;
handle.th_tid = pt_map_thread(ta, lwp, pt);
handle.th_thread = pt;
msg->th_p = &handle;
return (0);
}
static td_err_e
@ -610,29 +680,85 @@ pt_thr_setgregs(const td_thrhandle_t *th, const prgregset_t gregs)
static td_err_e
pt_thr_event_enable(const td_thrhandle_t *th, int en)
{
const td_thragent_t *ta = th->th_ta;
int ret;
TDBG_FUNC();
return (TD_ERR);
ret = ps_pwrite(ta->ph, th->th_thread + ta->thread_off_report_events,
&en, sizeof(int));
return (P2T(ret));
}
static td_err_e
pt_thr_set_event(const td_thrhandle_t *th, td_thr_events_t *setp)
{
const td_thragent_t *ta = th->th_ta;
td_thr_events_t mask;
int ret;
TDBG_FUNC();
return (TD_ERR);
ret = ps_pread(ta->ph, th->th_thread + ta->thread_off_event_mask,
&mask, sizeof(mask));
mask |= *setp;
ret = ps_pwrite(ta->ph, th->th_thread + ta->thread_off_event_mask,
&mask, sizeof(mask));
return (P2T(ret));
}
static td_err_e
pt_thr_clear_event(const td_thrhandle_t *th, td_thr_events_t *setp)
{
const td_thragent_t *ta = th->th_ta;
td_thr_events_t mask;
int ret;
TDBG_FUNC();
return (TD_ERR);
ret = ps_pread(ta->ph, th->th_thread + ta->thread_off_event_mask,
&mask, sizeof(mask));
mask &= ~*setp;
ret = ps_pwrite(ta->ph, th->th_thread + ta->thread_off_event_mask,
&mask, sizeof(mask));
return (P2T(ret));
}
static td_err_e
pt_thr_event_getmsg(const td_thrhandle_t *th, td_event_msg_t *msg)
{
static td_thrhandle_t handle;
td_thragent_t *ta = (td_thragent_t *)th->th_ta;
psaddr_t pt, pt_temp;
long lwp;
int ret;
td_thr_events_e tmp;
TDBG_FUNC();
return (TD_NOMSG);
pt = th->th_thread;
ret = ps_pread(ta->ph, ta->thread_last_event_addr, &pt_temp, sizeof(pt_temp));
if (ret != 0)
return (P2T(ret));
/* get event */
ret = ps_pread(ta->ph, pt + ta->thread_off_event_buf, msg, sizeof(*msg));
if (ret != 0)
return (P2T(ret));
if (msg->event == 0)
return (TD_NOMSG);
/* clear event, at the time, libthr only reports event once a time. */
if (pt == pt_temp) {
pt_temp = NULL;
ps_pwrite(ta->ph, ta->thread_last_event_addr, &pt_temp, sizeof(pt_temp));
}
tmp = 0;
ps_pwrite(ta->ph, pt + ta->thread_off_event_buf, &tmp, sizeof(tmp));
/* convert event */
pt = (psaddr_t)msg->th_p;
ret = ps_pread(ta->ph, pt + ta->thread_off_tid, &lwp, sizeof(lwp));
if (ret != 0)
return (P2T(ret));
handle.th_ta = ta;
handle.th_tid = pt_map_thread(ta, lwp, pt);
handle.th_thread = pt;
msg->th_p = &handle;
return (0);
}
static td_err_e

1
lib/libthread_db/thread_db.h
View File

@ -57,6 +57,7 @@ typedef enum {
TD_PARTIALREG
} td_err_e;
struct ps_prochandle;
typedef struct td_thragent td_thragent_t;
typedef long thread_t; /* Must be an integral type. */