static void obsd_update_thread_list (struct target_ops *ops) { pid_t pid = ptid_get_pid (inferior_ptid); struct ptrace_thread_state pts; prune_threads (); if (ptrace (PT_GET_THREAD_FIRST, pid, (caddr_t)&pts, sizeof pts) == -1) perror_with_name (("ptrace")); while (pts.pts_tid != -1) { ptid_t ptid = ptid_build (pid, pts.pts_tid, 0); if (!in_thread_list (ptid)) { if (ptid_get_lwp (inferior_ptid) == 0) thread_change_ptid (inferior_ptid, ptid); else add_thread (ptid); } if (ptrace (PT_GET_THREAD_NEXT, pid, (caddr_t)&pts, sizeof pts) == -1) perror_with_name (("ptrace")); } }
static void nbsd_thread_activate (void) { nbsd_thread_active = 1; main_ptid = inferior_ptid; cached_thread = minus_one_ptid; thread_change_ptid(inferior_ptid, ptid_build (ptid_get_pid (inferior_ptid), 1, 0)); nbsd_update_thread_list (NULL); inferior_ptid = find_active_thread (); }
static ptid_t obsd_wait (struct target_ops *ops, ptid_t ptid, struct target_waitstatus *ourstatus, int options) { pid_t pid; int status, save_errno; do { set_sigint_trap (); do { pid = waitpid (ptid_get_pid (ptid), &status, 0); save_errno = errno; } while (pid == -1 && errno == EINTR); clear_sigint_trap (); if (pid == -1) { fprintf_unfiltered (gdb_stderr, _("Child process unexpectedly missing: %s.\n"), safe_strerror (save_errno)); /* Claim it exited with unknown signal. */ ourstatus->kind = TARGET_WAITKIND_SIGNALLED; ourstatus->value.sig = GDB_SIGNAL_UNKNOWN; return inferior_ptid; } /* Ignore terminated detached child processes. */ if (!WIFSTOPPED (status) && pid != ptid_get_pid (inferior_ptid)) pid = -1; } while (pid == -1); ptid = pid_to_ptid (pid); if (WIFSTOPPED (status)) { ptrace_state_t pe; pid_t fpid; if (ptrace (PT_GET_PROCESS_STATE, pid, (caddr_t)&pe, sizeof pe) == -1) perror_with_name (("ptrace")); switch (pe.pe_report_event) { case PTRACE_FORK: ourstatus->kind = TARGET_WAITKIND_FORKED; ourstatus->value.related_pid = pid_to_ptid (pe.pe_other_pid); /* Make sure the other end of the fork is stopped too. */ fpid = waitpid (pe.pe_other_pid, &status, 0); if (fpid == -1) perror_with_name (("waitpid")); if (ptrace (PT_GET_PROCESS_STATE, fpid, (caddr_t)&pe, sizeof pe) == -1) perror_with_name (("ptrace")); gdb_assert (pe.pe_report_event == PTRACE_FORK); gdb_assert (pe.pe_other_pid == pid); if (fpid == ptid_get_pid (inferior_ptid)) { ourstatus->value.related_pid = pid_to_ptid (pe.pe_other_pid); return pid_to_ptid (fpid); } return pid_to_ptid (pid); } ptid = ptid_build (pid, pe.pe_tid, 0); if (!in_thread_list (ptid)) { if (ptid_get_lwp (inferior_ptid) == 0) thread_change_ptid (inferior_ptid, ptid); else add_thread (ptid); } } store_waitstatus (ourstatus, status); return ptid; }