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* wait.cc (wait4): Rename variable for consistency. Allow restartable signal

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behavior.
This commit is contained in:
Christopher Faylor
2001-01-16 02:29:47 +00:00
parent 9334c89c1d
commit 9470a80c8b
2 changed files with 22 additions and 14 deletions
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31
winsup/cygwin/wait.cc
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@@ -47,11 +47,12 @@ wait3 (int *status, int options, struct rusage *r)
pid_t
wait4 (int intpid, int *status, int options, struct rusage *r)
{
int rc;
int res;
waitq *w;
HANDLE waitfor;
sigframe thisframe (mainthread);
beg:
if (options & ~(WNOHANG | WUNTRACED))
{
set_errno (EINVAL);
@@ -71,48 +72,50 @@ wait4 (int intpid, int *status, int options, struct rusage *r)
w->pid, w->options);
if (!proc_subproc(PROC_WAIT, (DWORD)w))
{
set_errno(ENOSYS);
set_errno (ENOSYS);
paranoid_printf ("proc_subproc returned 0");
rc = -1;
res = -1;
goto done;
}
if ((waitfor = w->ev) == NULL)
goto nochildren;
rc = WaitForSingleObject (waitfor, INFINITE);
res = WaitForSingleObject (waitfor, INFINITE);
sigproc_printf ("%d = WaitForSingleObject (...)", rc);
sigproc_printf ("%d = WaitForSingleObject (...)", res);
if (w->ev == NULL)
{
nochildren:
/* found no children */
set_errno (ECHILD);
rc = -1;
res = -1;
goto done;
}
if (w->status == -1)
{
set_sig_errno (EINTR);
rc = -1;
res = -1;
}
else if (rc != WAIT_OBJECT_0)
else if (res != WAIT_OBJECT_0)
{
/* We shouldn't set errno to any random value if we can help it.
See the Posix manual for a list of valid values for `errno'. */
set_errno (EINVAL);
rc = -1;
res = -1;
}
else if ((rc = w->pid) != 0 && status)
else if ((res = w->pid) != 0 && status)
*status = w->status;
done:
sigproc_printf ("intpid %d, status %p, w->status %d, options %d, rc %d",
intpid, status, w->status, options, rc);
if (res < 0 && get_errno () == EINTR && call_signal_handler ())
goto beg;
sigproc_printf ("intpid %d, status %p, w->status %d, options %d, res %d",
intpid, status, w->status, options, res);
w->status = -1;
if (rc < 0)
if (res < 0)
sigproc_printf("*** errno = %d", get_errno());
return rc;
return res;
}