2de9ea5c7d
1998-06-18 Martin Baulig <baulig@taurus.uni-trier.de> * lib/{command, write, read}.c: Changed client <-> server interface to make less system calls. * src/daemon/main.c: Changed server side of interface. * include/glibtop/command.h (struct _glibtop_response): New structure to return data from the server to the client.
71 lines
2.2 KiB
C
71 lines
2.2 KiB
C
/* $Id$ */
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/* Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
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This file is part of the Gnome Top Library.
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Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
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The Gnome Top Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The Gnome Top Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <glibtop/read.h>
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#include <glibtop/write.h>
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#include <glibtop/read_data.h>
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#include <glibtop/command.h>
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#include <glibtop/xmalloc.h>
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void *
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glibtop_call_l (glibtop *server, unsigned command, size_t send_size, void *send_buf,
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size_t recv_size, void *recv_buf)
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{
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glibtop_command cmnd;
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glibtop_response response;
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void *ptr;
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glibtop_init_r (&server, 0, 0);
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memset (&cmnd, 0, sizeof (glibtop_command));
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memcpy (&cmnd.server, server, sizeof (glibtop));
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cmnd.command = command;
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/* If send_size is less than _GLIBTOP_PARAM_SIZE (normally 16 Bytes), we
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* send it together with command, so we only need one system call instead
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* of two. */
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#ifdef DEBUG
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fprintf (stderr, "COMMAND: send_size = %d; command = %d; sizeof (cmnd) = %d\n",
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send_size, command, sizeof (glibtop_command));
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#endif
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if (send_size <= _GLIBTOP_PARAM_SIZE)
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memcpy (cmnd.parameter, send_buf, send_size);
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else
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cmnd.size = send_size;
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glibtop_write_l (server, sizeof (glibtop_command), &cmnd);
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glibtop_write_l (server, send_size, send_buf);
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glibtop_read_l (server, sizeof (glibtop_response), &response);
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/* glibtop_read_l (server, recv_size, recv_buf); */
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/* ptr = glibtop_read_data_l (server); */
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return NULL;
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}
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