public static void HandleSelectAsync(SelectCompletion entry, int retval)
{
var current = entry.thr;
var b = entry.buf;
if (retval <= 0 || retval * pollfd.Size >= b.Length)
{
entry.Dispose();
current.ReturnFromCompletion(retval);
return;
}
int ret = retval;
var len = (entry.fds + 7) / 8;
var bit_set = 0;
var r = entry.helper.TranslateToUserFdlist(current, b, retval, entry.fds, entry.inp, POLLIN);
if (r < 0)
{
ret = r;
}
if (ret >= 0)
{
bit_set += r;
r = entry.helper.TranslateToUserFdlist(current, b, retval, entry.fds, entry.outp, POLLOUT);
if (r < 0)
{
ret = r;
}
}
if (ret >= 0)
{
bit_set += r;
r = entry.helper.TranslateToUserFdlist(current, b, retval, entry.fds, entry.exp, POLLERR | POLLHUP);
if (r < 0)
{
ret = r;
}
}
if (ret >= 0)
{
ret = bit_set;
}
entry.Dispose();
current.ReturnFromCompletion(ret);
}
public static int Select(Thread current, ref Arch.ExceptionRegisters regs, int maxfds, UserPtr inp, UserPtr outp, UserPtr exp, UserPtr tvp)
{
var helper = new SelectHelper();
int ret = 0;
ret = helper.AddUserFdList(current, inp, maxfds, POLLIN);
if (ret < 0)
return ret;
ret = helper.AddUserFdList(current, outp, maxfds, POLLOUT);
if (ret < 0)
return ret;
ret = helper.AddUserFdList(current, exp, maxfds, POLLERR);
if (ret < 0)
return ret;
int timeout = 0;
timeval tv;
if (tvp == UserPtr.Zero)
{
timeout = -1;
}
else if (tvp.Read(current, out tv) != 0)
{
return -ErrorCode.EFAULT;
}
else
{
timeout = (int)(tv.tv_sec * 1000 + tv.tv_usec / 1000);
}
var nfds = helper.TotalFds;
var pollfd_size = pollfd.Size * nfds;
var buf = Globals.AllocateAlignedCompletionBuffer(pollfd_size);
if (!buf.isValid)
return -ErrorCode.ENOMEM;
helper.WritePollFds(buf);
var select_entry = new SelectCompletion(current, maxfds, inp, outp, exp, helper, buf);
ret = Arch.IPCStubs.PollAsync(current.Parent.helperPid, current.impl._value.thread._value, new Pointer(buf.Location), nfds, timeout);
if (ret < 0)
{
select_entry.Dispose();
return ret;
}
Globals.CompletionQueue.Enqueue(select_entry);
current.SaveState(ref regs);
current.AsyncReturn = true;
return 0;
}
public static int Select(Thread current, ref Arch.ExceptionRegisters regs, int maxfds, UserPtr inp, UserPtr outp, UserPtr exp, UserPtr tvp)
{
var helper = new SelectHelper();
int ret = 0;
ret = helper.AddUserFdList(current, inp, maxfds, POLLIN);
if (ret < 0)
{
return(ret);
}
ret = helper.AddUserFdList(current, outp, maxfds, POLLOUT);
if (ret < 0)
{
return(ret);
}
ret = helper.AddUserFdList(current, exp, maxfds, POLLERR);
if (ret < 0)
{
return(ret);
}
int timeout = 0;
timeval tv;
if (tvp == UserPtr.Zero)
{
timeout = -1;
}
else if (tvp.Read(current, out tv) != 0)
{
return(-ErrorCode.EFAULT);
}
else
{
timeout = (int)(tv.tv_sec * 1000 + tv.tv_usec / 1000);
}
var nfds = helper.TotalFds;
var pollfd_size = pollfd.Size * nfds;
var buf = Globals.AllocateAlignedCompletionBuffer(pollfd_size);
if (!buf.isValid)
{
return(-ErrorCode.ENOMEM);
}
helper.WritePollFds(buf);
var select_entry = new SelectCompletion(current, maxfds, inp, outp, exp, helper, buf);
ret = Arch.IPCStubs.PollAsync(current.Parent.helperPid, current.impl._value.thread._value, new Pointer(buf.Location), nfds, timeout);
if (ret < 0)
{
select_entry.Dispose();
return(ret);
}
Globals.CompletionQueue.Enqueue(select_entry);
current.SaveState(ref regs);
current.AsyncReturn = true;
return(0);
}
public static void HandleSelectAsync(SelectCompletion entry, int retval)
{
var current = entry.thr;
var b = entry.buf;
if (retval <= 0 || retval * pollfd.Size >= b.Length)
{
entry.Dispose();
current.ReturnFromCompletion(retval);
return;
}
int ret = retval;
var len = (entry.fds + 7) / 8;
var bit_set = 0;
var r = entry.helper.TranslateToUserFdlist(current, b, retval, entry.fds, entry.inp, POLLIN);
if (r < 0)
ret = r;
if (ret >= 0)
{
bit_set += r;
r = entry.helper.TranslateToUserFdlist(current, b, retval, entry.fds, entry.outp, POLLOUT);
if (r < 0)
ret = r;
}
if (ret >= 0)
{
bit_set += r;
r = entry.helper.TranslateToUserFdlist(current, b, retval, entry.fds, entry.exp, POLLERR | POLLHUP);
if (r < 0)
ret = r;
}
if (ret >= 0)
ret = bit_set;
entry.Dispose();
current.ReturnFromCompletion(ret);
}