libgtop-GNOME-2-0-branch moved to HEAD.
2003-10-19 Carlos Perelló Marín <carlos@gnome.org> * libgtop-GNOME-2-0-branch moved to HEAD.
This commit is contained in:
Carlos Perelló Marín
committed by
Carlos Perelló Marín
Carlos Perelló Marín
parent
5e28a55218
commit
bae16b467f
158
lib/open.c
158
lib/open.c
@@ -1,5 +1,3 @@
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/* -*- 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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@@ -25,20 +23,160 @@
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#include <glibtop.h>
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#include <glibtop/open.h>
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#include <glibtop/backend.h>
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#include <glibtop/version.h>
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#include <glibtop/sysdeps.h>
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#include <glibtop/command.h>
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#include <glibtop/xmalloc.h>
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#include <glibtop/gnuserv.h>
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/* Opens pipe to gtop server. Returns 0 on success and -1 on error. */
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void
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glibtop_open_l (glibtop *server, const char *program_name,
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const unsigned long features, const unsigned flags)
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{
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if ((server->flags & _GLIBTOP_INIT_STATE_SYSDEPS) == 0) {
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glibtop_init_backends ();
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int connect_type;
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_glibtop_open_sysdeps (server, "glibtop", features, flags);
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server->name = program_name;
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server->_param.ncpu = server->info->ncpu;
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server->_param.os_version_code = server->os_version_code;
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/* It is important to set _GLIBTOP_INIT_STATE_OPEN here when we
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* do recursive calls to glibtop_init_r (). */
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server->flags |= _GLIBTOP_INIT_STATE_SYSDEPS;
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}
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server->flags |= _GLIBTOP_INIT_STATE_OPEN;
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server->error_method = GLIBTOP_ERROR_METHOD_DEFAULT;
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#ifdef DEBUG
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fprintf (stderr, "SIZEOF: %u - %u - %u - %u - %u - %u\n",
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sizeof (glibtop_command), sizeof (glibtop_response),
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sizeof (glibtop_mountentry), sizeof (glibtop_union),
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sizeof (glibtop_sysdeps), sizeof (glibtop_response_union));
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#endif
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switch (server->method) {
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case GLIBTOP_METHOD_DIRECT:
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server->features = 0;
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break;
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case GLIBTOP_METHOD_INET:
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#ifdef DEBUG
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fprintf (stderr, "Connecting to '%s' port %ld.\n",
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server->server_host, server->server_port);
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#endif
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connect_type = glibtop_make_connection
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(server->server_host, server->server_port,
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&server->socket);
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#ifdef DEBUG
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fprintf (stderr, "Connect Type is %d.\n", connect_type);
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#endif
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server->flags |= _GLIBTOP_INIT_STATE_SERVER;
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server->features = -1;
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break;
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case GLIBTOP_METHOD_UNIX:
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#ifdef DEBUG
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fprintf (stderr, "Connecting to Unix Domain Socket.\n");
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#endif
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connect_type = glibtop_make_connection
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("unix", 0, &server->socket);
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#ifdef DEBUG
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fprintf (stderr, "Connect Type is %d.\n", connect_type);
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#endif
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server->flags |= _GLIBTOP_INIT_STATE_SERVER;
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server->features = -1;
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break;
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case GLIBTOP_METHOD_PIPE:
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#ifdef DEBUG
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fprintf (stderr, "Opening pipe to server (%s).\n",
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LIBGTOP_SERVER);
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#endif
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if (pipe (server->input) || pipe (server->output))
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glibtop_error_io_r (server, "cannot make a pipe");
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server->pid = fork ();
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if (server->pid < 0) {
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glibtop_error_io_r (server, "fork failed");
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} else if (server->pid == 0) {
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close (0); close (1);
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close (server->input [0]); close (server->output [1]);
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dup2 (server->input [1], 1);
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dup2 (server->output [0], 0);
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execl (LIBGTOP_SERVER, "libgtop-server", NULL);
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glibtop_error_io_r (server, "execl (%s)",
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LIBGTOP_SERVER);
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_exit (2);
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}
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close (server->input [1]);
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close (server->output [0]);
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server->flags |= _GLIBTOP_INIT_STATE_SERVER;
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server->features = -1;
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break;
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}
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/* If the server has been started, ask it for its features. */
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if (server->flags & _GLIBTOP_INIT_STATE_SERVER) {
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char version [BUFSIZ], buffer [BUFSIZ];
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glibtop_sysdeps sysdeps;
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size_t size, nbytes;
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/* First check whether the server version is correct. */
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sprintf (version, LIBGTOP_VERSION_STRING,
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LIBGTOP_VERSION, LIBGTOP_SERVER_VERSION,
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sizeof (glibtop_command),
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sizeof (glibtop_response),
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sizeof (glibtop_union),
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sizeof (glibtop_sysdeps));
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size = strlen (version) + 1;
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glibtop_read_l (server, sizeof (nbytes), &nbytes);
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if (nbytes != size)
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glibtop_error_r (server,
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"Requested %u bytes but got %u.",
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size, nbytes);
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glibtop_read_l (server, nbytes, buffer);
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if (memcmp (version, buffer, size))
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glibtop_error_r (server, "server version is not %s",
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LIBGTOP_VERSION);
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/* Now ask it for its features. */
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glibtop_call_l (server, GLIBTOP_CMND_SYSDEPS, 0, NULL,
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sizeof (glibtop_sysdeps), &sysdeps);
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server->features = sysdeps.features;
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memcpy (&server->sysdeps, &sysdeps, sizeof (glibtop_sysdeps));
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#ifdef DEBUG
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fprintf (stderr, "Server features are %lu.\n",
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server->features);
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#endif
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}
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/* In any case, we call the open functions of our own sysdeps
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* directory. */
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#ifdef DEBUG
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fprintf (stderr, "Calling sysdeps open function.\n");
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#endif
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glibtop_init_s (&server, features, flags);
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}
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