/******************************************************************************
 * Nagios check_disk_io plugin
 *
 * License :   GPL
 * Author  :   Patricio M Dorantes Jamarne
 * Version :   0.5 
 *
 *
 * 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 3 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.  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, see <http://www.gnu.org/licenses/>.
 * 
 * Please visit also http://www.ibm.com/developerworks/wikis/display/WikiPtype/ryo
 * Parts of the code within this plugin come from there.
 *                       
 * Thanks to: Konstantin Reichert; I based this plugin on his own plugin
 * 
 * Comments, complains or congrats, please write me via g+
 *
 *******************************************************************************/
#include <stdio.h>



#include <stdio.h>
#include <stdlib.h>
#include <libperfstat.h>



void print_usage() {

}
void print_help() {

}

int main(int argc, char* argv[]) {
    int arguments;
    int retval=3;
    float warn_th = 75;
    float crit_th = 90;
    double tmp;


    if ( warn_th > crit_th ) {
        printf("Error: warning threshold is greater than critical threshold");
    }

    while ((arguments = getopt (argc, argv, ":w:c:h")) != -1) {
    	switch (arguments) {
    		case 'w':
    			warn_th = atoi(optarg);			
    			break;
    		case 'c':
    			crit_th = atoi(optarg);
    			break;
    		case 'h':
    			print_help();
    			break;
    		case ':':
    			fprintf (stderr, "Error: Option -%c requires an argument.\n", optopt);
    			exit(2);
    			break;
    		case '?':
    			fprintf (stderr, "Error: Unknown -%c argument.\n", optopt);
    			exit(2);
    			break;
    		default:
    			abort();
    	}
    }


    perfstat_memory_total_t ub;
    perfstat_memory_total ((perfstat_id_t*)NULL, &ub,sizeof(perfstat_memory_total_t),1);
    u_longlong_t used_memory = (ub.real_system+ub.real_process)*4/1024;
    u_longlong_t real_total = ub.real_total*4/1024;
    float memory_usage = ((float)used_memory/(float)real_total)*100;

    if (memory_usage >= crit_th ) 
    {
        retval = 2;
        printf("AIXMEM CRITICAL - Memory usage is at %f |memusage=%f;%f;%f \n",memory_usage,memory_usage,warn_th,crit_th);
    }
    else if (memory_usage >= warn_th ) 
    {
        retval = 1;
       printf("AIXMEM WARNING - Memory usage is at %f |memusage=%f;%f;%f \n",memory_usage,memory_usage,warn_th,crit_th);
    }
    else 
    {
        retval = 0;
        printf("AIXMEM OK - Memory usage is at %f |memusage=%f;%f;%f \n",memory_usage,memory_usage,warn_th,crit_th);
    }
    return retval; 
     
}