#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"
/* GNU/Linux libthread_db support.
/* Pointers to the libthread_db functions. */
- td_err_e (*td_init_p) (void);
-
- td_err_e (*td_ta_new_p) (struct ps_prochandle * ps,
- td_thragent_t **ta);
- td_err_e (*td_ta_map_lwp2thr_p) (const td_thragent_t *ta,
- lwpid_t lwpid, td_thrhandle_t *th);
- td_err_e (*td_ta_thr_iter_p) (const td_thragent_t *ta,
- td_thr_iter_f *callback, void *cbdata_p,
- td_thr_state_e state, int ti_pri,
- sigset_t *ti_sigmask_p,
- unsigned int ti_user_flags);
- td_err_e (*td_ta_event_addr_p) (const td_thragent_t *ta,
- td_event_e event, td_notify_t *ptr);
- td_err_e (*td_ta_set_event_p) (const td_thragent_t *ta,
- td_thr_events_t *event);
- td_err_e (*td_ta_clear_event_p) (const td_thragent_t *ta,
- td_thr_events_t *event);
- td_err_e (*td_ta_event_getmsg_p) (const td_thragent_t *ta,
- td_event_msg_t *msg);
-
- td_err_e (*td_thr_get_info_p) (const td_thrhandle_t *th,
- td_thrinfo_t *infop);
- td_err_e (*td_thr_event_enable_p) (const td_thrhandle_t *th,
- int event);
-
- td_err_e (*td_thr_tls_get_addr_p) (const td_thrhandle_t *th,
- psaddr_t map_address,
- size_t offset, psaddr_t *address);
- td_err_e (*td_thr_tlsbase_p) (const td_thrhandle_t *th,
- unsigned long int modid,
- psaddr_t *base);
+ td_init_ftype *td_init_p;
+ td_ta_new_ftype *td_ta_new_p;
+ td_ta_map_lwp2thr_ftype *td_ta_map_lwp2thr_p;
+ td_ta_thr_iter_ftype *td_ta_thr_iter_p;
+ td_ta_event_addr_ftype *td_ta_event_addr_p;
+ td_ta_set_event_ftype *td_ta_set_event_p;
+ td_ta_clear_event_ftype *td_ta_clear_event_p;
+ td_ta_event_getmsg_ftype * td_ta_event_getmsg_p;
+ td_thr_validate_ftype *td_thr_validate_p;
+ td_thr_get_info_ftype *td_thr_get_info_p;
+ td_thr_event_enable_ftype *td_thr_event_enable_p;
+ td_thr_tls_get_addr_ftype *td_thr_tls_get_addr_p;
+ td_thr_tlsbase_ftype *td_thr_tlsbase_p;
};
/* List of known processes using thread_db, and the required
static void check_thread_signals (void);
-static void 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_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);
/* Add the current inferior to the list of processes using libpthread.
Return a pointer to the newly allocated object that was added to
static struct thread_db_info *
add_thread_db_info (void *handle)
{
- struct thread_db_info *info;
+ struct thread_db_info *info = XCNEW (struct thread_db_info);
- info = xcalloc (1, sizeof (*info));
info->pid = ptid_get_pid (inferior_ptid);
info->handle = handle;
\f
/* Fetch the user-level thread id of PTID. */
-static void
+static struct thread_info *
thread_from_lwp (ptid_t ptid)
{
td_thrhandle_t th;
/* Fill the cache. */
tp = find_thread_ptid (ptid);
- record_thread (info, tp, ptid, &th, &ti);
+ return record_thread (info, tp, ptid, &th, &ti);
}
\f
}
static td_err_e
-enable_thread_event (int event, CORE_ADDR *bp)
+enable_thread_event (td_event_e event, CORE_ADDR *bp)
{
td_notify_t notify;
td_err_e err;
/* Initialize pointers to the dynamic library functions we will use.
Essential functions first. */
- info->td_init_p = verbose_dlsym (info->handle, "td_init");
- if (info->td_init_p == NULL)
- return 0;
+#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) \
+ do \
+ { \
+ if ((a) == NULL) \
+ return 0; \
+ } while (0)
+
+ CHK (TDB_VERBOSE_DLSYM (info, td_init));
err = info->td_init_p ();
if (err != TD_OK)
return 0;
}
- info->td_ta_new_p = verbose_dlsym (info->handle, "td_ta_new");
- if (info->td_ta_new_p == NULL)
- return 0;
+ CHK (TDB_VERBOSE_DLSYM (info, td_ta_new));
/* Initialize the structure that identifies the child process. */
info->proc_handle.ptid = inferior_ptid;
return 0;
}
- info->td_ta_map_lwp2thr_p = verbose_dlsym (info->handle,
- "td_ta_map_lwp2thr");
- if (info->td_ta_map_lwp2thr_p == NULL)
- return 0;
-
- info->td_ta_thr_iter_p = verbose_dlsym (info->handle, "td_ta_thr_iter");
- if (info->td_ta_thr_iter_p == NULL)
- return 0;
-
- info->td_thr_get_info_p = verbose_dlsym (info->handle, "td_thr_get_info");
- if (info->td_thr_get_info_p == NULL)
- return 0;
+ /* These are essential. */
+ CHK (TDB_VERBOSE_DLSYM (info, td_ta_map_lwp2thr));
+ CHK (TDB_VERBOSE_DLSYM (info, td_ta_thr_iter));
+ CHK (TDB_VERBOSE_DLSYM (info, td_thr_validate));
+ CHK (TDB_VERBOSE_DLSYM (info, td_thr_get_info));
/* These are not essential. */
- info->td_ta_event_addr_p = dlsym (info->handle, "td_ta_event_addr");
- info->td_ta_set_event_p = dlsym (info->handle, "td_ta_set_event");
- info->td_ta_clear_event_p = dlsym (info->handle, "td_ta_clear_event");
- info->td_ta_event_getmsg_p = dlsym (info->handle, "td_ta_event_getmsg");
- info->td_thr_event_enable_p = dlsym (info->handle, "td_thr_event_enable");
- info->td_thr_tls_get_addr_p = dlsym (info->handle, "td_thr_tls_get_addr");
- info->td_thr_tlsbase_p = dlsym (info->handle, "td_thr_tlsbase");
+ TDB_DLSYM (info, td_ta_event_addr);
+ TDB_DLSYM (info, td_ta_set_event);
+ TDB_DLSYM (info, td_ta_clear_event);
+ TDB_DLSYM (info, td_ta_event_getmsg);
+ TDB_DLSYM (info, td_thr_event_enable);
+ TDB_DLSYM (info, td_thr_tls_get_addr);
+ TDB_DLSYM (info, td_thr_tlsbase);
+
+#undef TDB_VERBOSE_DLSYM
+#undef TDB_DLSYM
+#undef CHK
/* It's best to avoid td_ta_thr_iter if possible. That walks data
structures in the inferior's address space that may be corrupted,
char *path, *cp;
int result;
const char *obj_name = objfile_name (obj);
+ int alloc_len;
if (obj_name[0] != '/')
{
return 0;
}
- path = xmalloc (strlen (obj_name) + (subdir ? strlen (subdir) + 1 : 0)
- + 1 + strlen (LIBTHREAD_DB_SO) + 1);
+ alloc_len = (strlen (obj_name)
+ + (subdir ? strlen (subdir) + 1 : 0)
+ + 1 + strlen (LIBTHREAD_DB_SO) + 1);
+ path = (char *) xmalloc (alloc_len);
cleanup = make_cleanup (xfree, path);
strcpy (path, obj_name);
if (!auto_load_thread_db)
return 0;
- path = xmalloc (dir_len + 1 + strlen (LIBTHREAD_DB_SO) + 1);
+ path = (char *) xmalloc (dir_len + 1 + strlen (LIBTHREAD_DB_SO) + 1);
cleanup = make_cleanup (xfree, path);
memcpy (path, dir, dir_len);
if (this_dir[pdir_len] == '/')
{
- subdir = xmalloc (strlen (this_dir));
+ subdir = (char *) xmalloc (strlen (this_dir));
make_cleanup (xfree, subdir);
strcpy (subdir, this_dir + pdir_len + 1);
}
child's thread list, we'll mistakenly think it has no threads
since the thread PID fields won't match the PID we give to
libthread_db. */
- char *our_pid_ns = linux_proc_pid_get_ns (getpid (), "pid");
- char *inferior_pid_ns = linux_proc_pid_get_ns (
- ptid_get_pid (inferior_ptid), "pid");
-
- if (our_pid_ns != NULL && inferior_pid_ns != NULL
- && strcmp (our_pid_ns, inferior_pid_ns) != 0)
+ if (!linux_ns_same (ptid_get_pid (inferior_ptid), LINUX_NS_PID))
{
warning (_ ("Target and debugger are in different PID "
"namespaces; thread lists and other data are "
"likely unreliable"));
}
-
- xfree (our_pid_ns);
- xfree (inferior_pid_ns);
}
}
}
/* Record a new thread in GDB's thread list. Creates the thread's
- private info. If TP is NULL, creates a new thread. Otherwise,
- uses TP. */
+ private info. If TP is NULL or TP is marked as having exited,
+ creates a new thread. Otherwise, uses TP. */
-static 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,
initialized yet. Leave private == NULL until the thread library
has initialized. */
if (ti_p->ti_tid == 0)
- return;
+ return tp;
/* Construct the thread's private data. */
- priv = xmalloc (sizeof (struct private_thread_info));
- memset (priv, 0, sizeof (struct private_thread_info));
+ priv = XCNEW (struct private_thread_info);
priv->th = *th_p;
priv->tid = ti_p->ti_tid;
if (target_has_execution)
check_thread_signals ();
+
+ return tp;
}
static void
td_err_e err;
ptid_t ptid;
struct thread_info *tp;
- struct callback_data *cb_data = data;
+ struct callback_data *cb_data = (struct callback_data *) data;
struct thread_db_info *info = cb_data->info;
err = info->td_thr_get_info_p (th_p, &ti);
if (libthread_db_debug)
fprintf_unfiltered (gdb_stdlog,
"thread_db: skipping exited and "
- "joined thread (0x%lx)\n", ti.ti_tid);
+ "joined thread (0x%lx)\n",
+ (unsigned long) ti.ti_tid);
return 0;
}
tid = thread_info->priv->tid;
snprintf (buf, sizeof (buf), "Thread 0x%lx (LWP %ld)",
- tid, ptid_get_lwp (ptid));
+ (unsigned long) tid, ptid_get_lwp (ptid));
return buf;
}
struct thread_info *thread_info;
struct target_ops *beneath;
- /* If we have not discovered any threads yet, check now. */
- if (!have_threads (ptid))
- thread_db_find_new_threads_1 (ptid);
-
/* Find the matching thread. */
thread_info = find_thread_ptid (ptid);
+ /* We may not have discovered the thread yet. */
+ if (thread_info != NULL && thread_info->priv == NULL)
+ thread_info = thread_from_lwp (ptid);
+
if (thread_info != NULL && thread_info->priv != NULL)
{
td_err_e err;
if (info->filename != NULL)
info_count++;
- array = xmalloc (sizeof (*array) * info_count);
+ array = XNEWVEC (struct thread_db_info *, info_count);
back_to = make_cleanup (xfree, array);
info_count = 0;
ui_out_table_header (uiout, pids_len, ui_left, "PIDs", "Pids");
ui_out_table_body (uiout);
- pids = xmalloc (max_pids_len + 1);
+ pids = (char *) xmalloc (max_pids_len + 1);
make_cleanup (xfree, pids);
/* Note I is incremented inside the cycle, not at its end. */
projects / deliverable / binutils-gdb.git / blobdiff