diff options
Diffstat (limited to 'gdb')
| -rw-r--r-- | gdb/ChangeLog | 7 | ||||
| -rw-r--r-- | gdb/inf-ttrace.c | 53 |
2 files changed, 55 insertions, 5 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index d0c31a0ba09..e8acfd8ce3d 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,12 @@ 2011-01-13 Joel Brobecker <brobecker@adacore.com> + [ttrace] Compute thread list immediately after attach. + * inf_ttrace_attach (inf_ttrace_create_threads_after_attach): + New subprogram. + (inf_ttrace_attach): Use it. + +2011-01-13 Joel Brobecker <brobecker@adacore.com> + * libunwind-frame.c (libunwind_frame_cache): Do not return NULL if we could not determine the frame's function address. Instead, use the frame's PC, and then continue. diff --git a/gdb/inf-ttrace.c b/gdb/inf-ttrace.c index d559067bb17..ab075db9c44 100644 --- a/gdb/inf-ttrace.c +++ b/gdb/inf-ttrace.c @@ -683,6 +683,53 @@ inf_ttrace_mourn_inferior (struct target_ops *ops) generic_mourn_inferior (); } +/* Assuming we just attached the debugger to a new inferior, create + a new thread_info structure for each thread, and add it to our + list of threads. */ + +static void +inf_ttrace_create_threads_after_attach (int pid) +{ + int status; + ptid_t ptid; + ttstate_t tts; + struct thread_info *ti; + + status = ttrace (TT_PROC_GET_FIRST_LWP_STATE, pid, 0, + (uintptr_t) &tts, sizeof (ttstate_t), 0); + if (status < 0) + perror_with_name (_("TT_PROC_GET_FIRST_LWP_STATE ttrace call failed")); + gdb_assert (tts.tts_pid == pid); + + /* Add the stopped thread. */ + ptid = ptid_build (pid, tts.tts_lwpid, 0); + ti = add_thread (ptid); + ti->private = xzalloc (sizeof (struct inf_ttrace_private_thread_info)); + inf_ttrace_num_lwps++; + + /* We use the "first stopped thread" as the currently active thread. */ + inferior_ptid = ptid; + + /* Iterative over all the remaining threads. */ + + for (;;) + { + ptid_t ptid; + + status = ttrace (TT_PROC_GET_NEXT_LWP_STATE, pid, 0, + (uintptr_t) &tts, sizeof (ttstate_t), 0); + if (status < 0) + perror_with_name (_("TT_PROC_GET_NEXT_LWP_STATE ttrace call failed")); + if (status == 0) + break; /* End of list. */ + + ptid = ptid_build (tts.tts_pid, tts.tts_lwpid, 0); + ti = add_thread (ptid); + ti->private = xzalloc (sizeof (struct inf_ttrace_private_thread_info)); + inf_ttrace_num_lwps++; + } +} + static void inf_ttrace_attach (struct target_ops *ops, char *args, int from_tty) { @@ -735,11 +782,7 @@ inf_ttrace_attach (struct target_ops *ops, char *args, int from_tty) push_target (ops); - /* We'll bump inf_ttrace_num_lwps up and add the private data to the - thread as soon as we get to inf_ttrace_wait. At this point, we - don't have lwpid info yet. */ - inferior_ptid = pid_to_ptid (pid); - add_thread_silent (inferior_ptid); + inf_ttrace_create_threads_after_attach (pid); } static void |