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File:  [GForge:cvsroot/nutss] / libnutss / examples / slinks_variable_load.c
Revision 1.2: download - view: text, annotated - select for diffs
Mon May 28 22:05:08 2007 UTC (10 years, 3 months ago) by ths
Branches: MAIN
CVS tags: HEAD
new experiments now working.

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifndef WIN32
#include <poll.h>
#include <sys/socket.h>
#endif
#include <pthread.h>
#include "../include/swaplinks.h"

#ifdef WIN32
#define sleep(sec) Sleep((sec)*1000)
#define snprintf   _snprintf
#endif

typedef struct flow {
    int duration;
    int weight;
    struct flow *next, *last;
} flow_t;

int num, limit;
FILE *f = NULL, *s = NULL;


void *recvthread(void *arg) {
    swaplinks_p swp = (swaplinks_p)arg;
    struct sockaddr_ns peer;
    socklen_t len = sizeof(peer);
    flow_t *flows, *newflow, *ptr;
    char tmp[128];
    int time = 0, load = 0;

    while(time < limit) {
        if(swaplinks_recvfrom(swp, tmp, sizeof(tmp), 0, &peer, &len) > 0) {
            time++;
            newflow = (flow_t*)calloc(1,sizeof(flow_t));
            newflow->duration = atoi(strtok(tmp,";"));
            newflow->weight = atoi(strtok(NULL,";"));
            fprintf(s,"%d ACCEPTED FLOW from %s: %d/%d\n",num,peer.user+4,newflow->duration,newflow->weight);
            for(ptr = flows; ptr; ptr = ptr->next) {
                if(--ptr->duration == 0) {
                    load -= ptr->weight;
                    if(ptr->last) ptr->last->next = ptr->next;
                    else          flows = ptr->next;
		    if(f) fprintf(f,"%d\t%d\t-%d\n",time,load,ptr->weight);
		    free(ptr);
                }
            }
            load += newflow->weight;
	    newflow->next = flows;
	    flows = newflow;
	    if(s) fprintf(s,"Node: %d Time: %d Load: %d\n",num,time,load);
            if(f) fprintf(f,"%d\t%d\t+%d\n",time,load,newflow->weight);
        }
    }
    fprintf(s,"RECV THREAD DONE\n");
}

int main(int argc, char **argv) {
    struct sockaddr_ns reg;
    swaplinks_p swp;
    char tmp[256];
    int time = 0, peers, duration, weight, sendcount = 0;
    pthread_t tid;

    if (argc > 5) {
        num = atoi(argv[1]);
        peers = atoi(argv[2]);
        limit = atoi(argv[3]);
        duration = atoi(argv[4]);
        weight = atoi(argv[5]);
    }
    else {
        printf("Usage:\n  slinks_variable_load node_number peers_number time_limit flow_duration flow_weight\n");
        exit(1);
    }

    snprintf(tmp, sizeof(tmp), "test%d", num);
    nutss_config_set(NUTSS_CONFIG_USERNAME, tmp, strlen(tmp));
    nutss_config_set(NUTSS_CONFIG_PROXYUSERNAME, tmp, strlen(tmp));
    nutss_config_set(NUTSS_CONFIG_PROXYPASSWORD, tmp, strlen(tmp));
    strncpy(tmp, "nutss.net", sizeof(tmp));
    nutss_config_set(NUTSS_CONFIG_DOMAINNAME, tmp, strlen(tmp));
    strncpy(tmp, "sip.nutss.net:5060", sizeof(tmp));
    nutss_config_set(NUTSS_CONFIG_SIGPROXY, tmp, strlen(tmp));

    sprintf(tmp, "output/data_node%d.txt", num); f = fopen(tmp,"w");
    sprintf(tmp, "output/output_node%d.txt", num); s = fopen(tmp,"w");
    if (f == NULL) f = stderr;
    if (s == NULL) s = stdout;

    memset(&reg, 0, sizeof(reg));
    reg.family = AF_NUTSS;
    strncpy(reg.user, "ths1", sizeof(reg.user));
    strncpy(reg.domain, "nutss.net", sizeof(reg.domain));
    strncpy(reg.service, "swaplinksd", sizeof(reg.service));

    swaplinks_init();
    swp = swaplinks_new("cloud9", &reg, peers, peers);
    
    // let swaplinks get going.
    sleep(10);
    
    pthread_create(&tid, NULL, recvthread, swp);

    sleep(1);

    while (time++ < limit*10) { // (i-- != 0) {
        snprintf(tmp, sizeof(tmp), "%d;%d;", duration, weight);        
        if((double)rand()/RAND_MAX > (3.0/4)) { //(double)duration/limit) {
            fprintf(s,"%d SENDING FLOW...\n",num);
            swaplinks_sendtoany(swp, tmp, strlen(tmp)+1, 0);
        }
        sleep(1);
    }

    pthread_join(tid,NULL);

    if(f) fclose(f);
    if(s) fclose(s);
    
    return 0;
}

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