main.c

HP PCI热插拔代码GUI HP内部珍贵资料！

/*
 *    Compaq Hot Plug Controller Graphical User Interface 
 *    Copyright 2000, 2001 Compaq Computer Corporation
 *    All rights reserved.
 *
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
 *    NON INFRINGEMENT.  See the GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *    Please send all questions or concerns to [e-mail]
 */

#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

#define MAIN_SOURCE_FILE

#include "commonheader.h"
#include "build_table.h"
#include "build_tree.h"
#include "kudzu-support.h"
#include "interface.h"
#include "refresh_table.h"
#include "refresh_tree.h"
#include "support.h"
#include "tree.h"

// function prototypes
void do_init();
void signal_handler();
void init_handler();
void quit();

// define global variables
gint context_id = 0;
gint selected_row = NOT_SELECTED;	// global row variable
GtkCTree* g_tree = NULL;		// global tree
GtkWidget* g_window = NULL;		// global window
GtkWidget* g_statusbar = NULL;		// global status bar
GtkWidget* g_table = NULL;		// global table
GtkCTreeNode* g_node = NULL;		// global tree node
pci_tree_node* g_pci_node = NULL;	// global pci tree node
int dev_hpc = 0;			// device node
ioctl_data stuff;			// structure used in ioctl calls
struct sigaction sact;			// signal handler variable
struct sigaction osact;			// signal handler variable
sem_t critical;				// semaphore variable

void do_init()
{
	sem_init(&critical, 0, 1);

	if ((dev_hpc = open("/dev/compaq/cpqphpc", O_RDONLY)) < 0)
	{
		fprintf(stderr, "WARNING: Cannot open /dev/compaq/cpqphpc.\n");
		fprintf(stderr, "         Hot Plug Controller may not be installed.\n");
		exit(1);
	}
}

void signal_handler()
{
        message sig_msg;

	read(dev_hpc, &sig_msg, sizeof(message));

	// re-build the tree/table if message id > 0, otherwise refresh the tree/table
	if (sig_msg.message_id > 0)
		build_tree_from_slot(g_tree, sig_msg.message_id);
	else if (sig_msg.message_id < 0) {
		refresh_tree(g_tree);
	
		if (g_node) {	
			gtk_ctree_select(g_tree, g_node);	// set focus on selected node
			build_table(g_table, g_node);	
		}
		else {
			gtk_ctree_select(g_tree, root_nodes[(-sig_msg.message_id) - 1]);  // set focus on parent
			refresh_table(g_table, root_nodes[(-sig_msg.message_id) - 1]);
		}
			
	}
}

void init_handler()
{
	int rt;

        sigemptyset(&sact.sa_mask);
        sigaddset(&sact.sa_mask, SIGIO);
        sact.sa_handler = (__sighandler_t)signal_handler;
        sact.sa_flags = 0;
        if (sigaction(SIGIO, &sact, &osact) < 0) {
             fprintf( stderr, "SIGIO signal error\n");
        }
        fcntl(dev_hpc, F_SETOWN, getpid());
        rt = fcntl(dev_hpc, F_GETFL);
        fcntl(dev_hpc, F_SETFL, rt | FASYNC);
}

// exit the application
void quit()
{
        close(dev_hpc);
        pciFreeDrivers();
        gtk_exit(0);
}

int main (int argc, char *argv[])
{
	GtkWidget *window;

	#ifdef ENABLE_NLS
	  bindtextdomain (PACKAGE, PACKAGE_LOCALE_DIR);
	  textdomain (PACKAGE);
	#endif

	gnome_init ("cpqphpgui", VERSION, argc, argv);

	if (pciReadDrivers(NULL) < 0) {
        	fprintf(stderr, "Error reading pcitable!\n");
	}

	do_init();
	init_handler();
	
	window = create_window ();
	
	// build the tree and table with global structures
	build_table(g_table, g_node);
	build_tree(g_tree);
	
	gtk_widget_show (window);
 
	// connect exit signal
	gtk_signal_connect (GTK_OBJECT (window), "destroy", GTK_SIGNAL_FUNC (quit), NULL);
 
	gtk_main ();
	return 0;
}
#undef MAIN_SOURCE_FILE