115 lines
2.8 KiB
C
115 lines
2.8 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */
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/* $Id$ */
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/* Copyright (C) 1998-99 Martin Baulig
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This file is part of LibGTop 1.0.
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Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
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LibGTop is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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LibGTop is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with LibGTop; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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*/
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#include "server.h"
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void
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do_output (int s, glibtop_response *resp, const void *recv_ptr,
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const void *data_ptr)
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{
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#ifdef DEBUG
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fprintf (stderr, "Really writing %d bytes.\n",
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sizeof (glibtop_response));
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#endif
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if (s == 0) {
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if (write (1, (const void *) resp, sizeof (glibtop_response)) < 0)
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glibtop_warn_io ("write");
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} else {
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if (send (s, (const void *) resp, sizeof (glibtop_response), 0) < 0)
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glibtop_warn_io ("send");
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}
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if (resp->recv_size) {
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#ifdef DEBUG
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fprintf (stderr, "Writing %ld bytes of data.\n",
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(long) resp->recv_size);
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#endif
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if (s == 0) {
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if (write (1, recv_ptr, resp->recv_size) < 0)
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glibtop_warn_io ("write");
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} else {
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if (send (s, recv_ptr, resp->recv_size, 0) < 0)
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glibtop_warn_io ("send");
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}
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}
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if (resp->data_size) {
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#ifdef DEBUG
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fprintf (stderr, "Writing %ld bytes of extra data.\n",
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(long) resp->data_size);
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#endif
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if (s == 0) {
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if (write (1, data_ptr, resp->data_size) < 0)
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glibtop_warn_io ("write");
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} else {
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if (send (s, data_ptr, resp->data_size, 0) < 0)
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glibtop_warn_io ("send");
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}
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}
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}
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int
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do_read (int s, void *ptr, size_t total_size)
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{
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int nread;
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char *tmp_ptr;
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size_t already_read = 0, remaining = total_size;
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while (already_read < total_size) {
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if (s)
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nread = recv (s, ptr, remaining, 0);
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else
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nread = read (0, ptr, remaining);
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if ((already_read == 0) && (nread == 0)) {
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glibtop_warn ("pid %d received eof.", getpid ());
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return 0;
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}
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if (nread <= 0) {
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glibtop_warn_io ("recv");
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return 0;
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}
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already_read += nread;
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remaining -= nread;
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/* (char *) ptr += nread; */
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tmp_ptr = ptr;
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tmp_ptr += nread;
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ptr = tmp_ptr;
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#ifdef DEBUG
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fprintf (stderr, "READ (%d): %d - %d - %d\n",
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nread, already_read, remaining, total_size);
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#endif
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}
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return already_read;
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}
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