unsigned char valgrind_wait (char *ourstatus)
{
int pid;
unsigned long wptid;
ThreadState *tst;
enum target_signal sig;
int code;
pid = VG_(getpid) ();
dlog(1, "enter valgrind_wait pid %d\n", pid);
regcache_invalidate();
valgrind_update_threads(pid);
/* First see if we are done with this process. */
if (exit_status_to_report != 0) {
*ourstatus = exit_status_to_report;
exit_status_to_report = 0;
if (*ourstatus == 'W') {
code = exit_code_to_report;
exit_code_to_report = 0;
dlog(1, "exit valgrind_wait status W exit code %d\n", code);
return code;
}
if (*ourstatus == 'X') {
sig = target_signal_from_host(exit_code_to_report);
exit_code_to_report = 0;
dlog(1, "exit valgrind_wait status X signal %u\n", sig);
return sig;
}
}
/* in valgrind, we consider that a wait always succeeds with STOPPED 'T'
and with a signal TRAP (i.e. a breakpoint), unless there is
a signal to report. */
*ourstatus = 'T';
if (vki_signal_to_report.si_signo == 0)
sig = TARGET_SIGNAL_TRAP;
else
sig = target_signal_from_host(vki_signal_to_report.si_signo);
if (vgdb_interrupted_tid != 0)
tst = VG_(get_ThreadState) (vgdb_interrupted_tid);
else
tst = VG_(get_ThreadState) (VG_(running_tid));
wptid = tst->os_state.lwpid;
/* we can only change the current_inferior when the wptid references
an existing thread. Otherwise, we are still in the init phase.
(hack similar to main thread hack in valgrind_update_threads) */
if (tst->os_state.lwpid)
current_inferior = gdb_id_to_thread (wptid);
stop_pc = (*the_low_target.get_pc) ();
dlog(1,
"exit valgrind_wait status T ptid %s stop_pc %s signal %u\n",
image_ptid (wptid), sym (stop_pc), sig);
return sig;
}
static
void remove_thread_if_not_in_vg_threads (struct inferior_list_entry *inf)
{
struct thread_info *thread = get_thread (inf);
if (!VG_(lwpid_to_vgtid)(thread_to_gdb_id(thread))) {
dlog(1, "removing gdb ptid %s\n",
image_ptid(thread_to_gdb_id(thread)));
remove_thread (thread);
}
}
