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Use linker set to collection all target operations.

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This commit is contained in:
David Xu 2008-03-22 05:40:44 +00:00
parent a355f43ed2
commit 20b94d8035
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=177490
4 changed files with 22 additions and 13 deletions
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3
lib/libthread_db/libc_r_db.c
View File

@ -28,6 +28,7 @@
__FBSDID("$FreeBSD$");
#include <machine/setjmp.h>
#include <sys/linker_set.h>
#include <proc_service.h>
#include <stdlib.h>
#include <string.h>
@ -346,3 +347,5 @@ struct ta_ops libc_r_db_ops = {
.to_thr_setxmmregs = libc_r_db_thr_setxmmregs,
#endif
};
DATA_SET(__ta_ops, libc_r_db_ops);

3
lib/libthread_db/libpthread_db.c
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@ -33,6 +33,7 @@ __FBSDID("$FreeBSD$");
#include <unistd.h>
#include <pthread.h>
#include <sys/types.h>
#include <sys/linker_set.h>
#include <sys/kse.h>
#include <sys/ptrace.h>
#include <proc_service.h>
@ -1147,3 +1148,5 @@ struct ta_ops libpthread_db_ops = {
.to_thr_setxmmregs = pt_thr_setxmmregs,
#endif
};
DATA_SET(__ta_ops, libpthread_db_ops);

3
lib/libthread_db/libthr_db.c
View File

@ -33,6 +33,7 @@ __FBSDID("$FreeBSD$");
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/linker_set.h>
#include <sys/ptrace.h>
#include <thread_db.h>
#include <unistd.h>
@ -791,3 +792,5 @@ struct ta_ops libthr_db_ops = {
.to_thr_setxmmregs = pt_thr_setxmmregs,
#endif
};
DATA_SET(__ta_ops, libthr_db_ops);

26
lib/libthread_db/thread_db.c
View File

@ -31,6 +31,8 @@ __FBSDID("$FreeBSD$");
#include <stddef.h>
#include <thread_db.h>
#include <unistd.h>
#include <sys/cdefs.h>
#include <sys/linker_set.h>
#include "thread_db_int.h"
@ -41,24 +43,20 @@ struct td_thragent
static TAILQ_HEAD(, td_thragent) proclist = TAILQ_HEAD_INITIALIZER(proclist);
extern struct ta_ops libpthread_db_ops;
extern struct ta_ops libthr_db_ops;
static struct ta_ops *ops[] = {
&libpthread_db_ops,
&libthr_db_ops,
};
SET_DECLARE(__ta_ops, struct ta_ops);
td_err_e
td_init(void)
{
td_err_e ret, tmp;
struct ta_ops *ops_p, **ops_pp;
size_t i;
ret = 0;
for (i = 0; i < sizeof(ops)/sizeof(ops[0]); i++) {
if (ops[i]->to_init != NULL) {
tmp = ops[i]->to_init();
SET_FOREACH(ops_pp, __ta_ops) {
ops_p = *ops_pp;
if (ops_p->to_init != NULL) {
tmp = ops_p->to_init();
if (tmp != TD_OK)
ret = tmp;
}
@ -107,11 +105,13 @@ td_err_e
td_ta_new(struct ps_prochandle *ph, td_thragent_t **pta)
{
size_t i;
struct ta_ops *ops_p, **ops_pp;
for (i = 0; i < sizeof(ops)/sizeof(ops[0]); ++i) {
if (ops[i]->to_ta_new(ph, pta) == TD_OK) {
SET_FOREACH(ops_pp, __ta_ops) {
ops_p = *ops_pp;
if (ops_p->to_ta_new(ph, pta) == TD_OK) {
TAILQ_INSERT_HEAD(&proclist, *pta, ta_next);
(*pta)->ta_ops = ops[i];
(*pta)->ta_ops = ops_p;
return (TD_OK);
}
}