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embed.move
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embed.move
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <unistd.h>
#include "def.h"
#include "embed.h"
struct request * req;
int n;
struct substrate_network sub;
struct s2v_node * s2v_n;
struct s2v_link * s2v_l;
struct req2sub * v2s;
struct shortest_path * spath;
#define TIME_INTERVAL 100
#define MAX_DOUBLE 1000000
#define MAX_LEN 1000
#define W_NODE_COST 1
#define W_LINK_COST 1
#define RAND_MAX 2147483647
void remove_node_map(struct s2v_node * s2v_n, int snode, int index);
void add_node_map(struct s2v_node * s2v_n, struct req2sub * v2s, int snode, int reqid, int nodeid);
void remove_link_map(struct s2v_link * s2v_l, int slink, int index);
void add_link_map(struct s2v_link * s2v_l, int slink, int reqid, int vlink);
void release_resource(struct s2v_node * s2v_n, struct s2v_link * s2v_l, struct req2sub * v2s, int index);
void calc_shortest_path(struct shortest_path * spath, struct substrate_network * sub);
void init_s2v_l(struct s2v_link * s2v_l);
void init_v2s(struct req2sub * v2s);
void print_map(struct req2sub * v2s);
void print_s2v_l(struct s2v_link * s2v_l);
void release_split_link(struct s2v_link * s2v_l, struct req2sub * v2s, int index);
struct s2v_node * s2v_ntmp;
struct s2v_link * s2v_ltmp;
struct req2sub * v2stmp;
struct s2v_node * s2v_ntmp2;
struct s2v_link * s2v_ltmp2;
struct req2sub * v2stmp2;
int find_proper_node(struct s2v_node * s2v_n, struct s2v_link * s2v_l, double cpu, int index) {
int i, j, snode = -1;
double min = MAX_CPU;
for(i = 0; i < sub.nodes; i ++) {
int exist = 0;
for (j = 0; j < s2v_n[i].req_count; j ++) {
if (s2v_n[i].req[j] == index) {
exist = 1;
break;
}
}
if (exist == 1) continue;
double diff = s2v_n[i].rest_cpu - cpu;
if ( diff > 0 && diff < min) {
min = diff;
snode = i;
}
}
return snode;
}
int find_MinNeighborResource_node(struct s2v_node * s2v_n, struct s2v_link * s2v_l, double cpu, int index) {
int i, j, snode = -1;
double min = -1;
double diff, sum;
for(i = 0; i < sub.nodes; i ++) {
int exist = 0;
for (j = 0; j < s2v_n[i].req_count; j ++) {
if (s2v_n[i].req[j] == index) {
exist = 1;
break;
}
}
if (exist == 1) continue;
diff = s2v_n[i].rest_cpu - cpu;
sum = 0;
if (diff < 0) continue;
for (j = 0; j < sub.links; j ++)
if (sub.link[j].from == i || sub.link[j].to == i) {
if (s2v_l[j].rest_bw > 0)
sum += s2v_l[j].rest_bw;
}
diff *=sum;
if (diff < min || min == -1) {
min = diff;
snode = i;
}
}
return snode;
}
int find_MaxNeighborResource_node(struct s2v_node * s2v_n, struct s2v_link * s2v_l, double cpu, int index, int exclude) {
int i, j, snode = -1;
double max = -1;
double diff, sum;
for(i = 0; i < sub.nodes; i ++) {
if (i == exclude) continue;
int exist = 0;
for (j = 0; j < s2v_n[i].req_count; j ++) {
if (s2v_n[i].req[j] == index) {
exist = 1;
break;
}
}
if (exist == 1) continue;
diff = s2v_n[i].rest_cpu - cpu;
sum = 0;
if (diff <= 0) continue;
for (j = 0; j < sub.links; j ++)
if (sub.link[j].from == i || sub.link[j].to == i) {
if (s2v_l[j].rest_bw > 0)
sum += s2v_l[j].rest_bw;
}
diff *=sum;
if (diff > max) {
max = diff;
snode = i;
}
}
return snode;
}
int find_available_node(struct s2v_node * s2v_n, struct s2v_link * s2v_l, double cpu, int index) {
int i, j, snode = -1;
//double min = -1;
double diff, sum;
int r = (int)(rand()/(double)RAND_MAX * sub.nodes);
int s;
for(i = 0; i < sub.nodes; i ++) {
s = (r+i)%sub.nodes;
int exist = 0;
for (j = 0; j < s2v_n[s].req_count; j ++) {
if (s2v_n[s].req[j] == index) {
exist = 1;
break;
}
}
if (exist == 1) continue;
diff = s2v_n[s].rest_cpu - cpu;
sum = 0;
if (diff < 0) continue;
return s;
}
return snode;
}
int map_node_greedy(struct s2v_node * s2v_n, struct s2v_link * s2v_l, struct req2sub * v2s, int index) {
int i, j;
int t;
for (i = 0; i < req[index].nodes; i ++) {
//t = find_proper_node(req[index].cpu[i], index);
t = find_MaxNeighborResource_node(s2v_n, s2v_l, req[index].cpu[i], index, -1);
if (t == -1) {
v2s[index].map = STATE_MAP_NODE_FAIL;
printf("req %d unsatisfied\n", index);
for (j = 0; j < i; j ++) {
remove_node_map(s2v_n, v2s[index].snode[j], j);
}
return -1;
}
//printf("map node req %d vnode %d snode %d\n", index, i, t);
add_node_map(s2v_n, v2s, t, index, i);
}
v2s[index].map = STATE_MAP_NODE;
return 0;
}
int map_node_star(struct s2v_node * s2v_n, struct s2v_link * s2v_l, struct req2sub * v2s, int index) {
int i, j;
int t;
for (i = 0; i < req[index].nodes; i ++) {
//t = find_proper_node(req[index].cpu[i], index);
if (i == 0) {
t = find_MaxNeighborResource_node(s2v_n, s2v_l, req[index].cpu[i], index, -1);
} else {
printf("find available node\n");
t = find_available_node(s2v_n, s2v_l, req[index].cpu[i], index);
//t = find_MinNeighborResource_node(req[index].cpu[i], index);
}
if (t == -1) {
v2s[index].map = STATE_MAP_NODE_FAIL;
printf("req %d unsatisfied\n", index);
for (j = 0; j < i; j ++) {
remove_node_map(s2v_n, v2s[index].snode[j], j);
}
return -1;
}
//printf("map node req %d vnode %d snode %d\n", index, i, t);
add_node_map(s2v_n, v2s, t, index, i);
}
v2s[index].map = STATE_MAP_NODE;
return 0;
}
int unsplittable_flow(struct s2v_node * s2v_n, struct s2v_link * s2v_l, struct req2sub * v2s, int start, int end, int option, int * slink, int * vlink, int time) {
int i, j, k, t, index = -1;
int flag, from, to, next;
struct s2v_link * s2v_ltmp3;
s2v_ltmp3 = (struct s2v_link *)malloc(sizeof(struct s2v_link)* sub.links);
memset(s2v_ltmp3, 0, sizeof(struct s2v_link)* sub.links);
struct s2v_link * s2v_ltmp4;
s2v_ltmp4 = (struct s2v_link *)malloc(sizeof(struct s2v_link)* sub.links);
memset(s2v_ltmp4, 0, sizeof(struct s2v_link)* sub.links);
struct substrate_network sub1;
struct shortest_path * spath1;
spath1 = (struct shortest_path *)malloc(sizeof(struct shortest_path) * sub.nodes * sub.nodes);
memcpy(s2v_ltmp3, s2v_l, sizeof(struct s2v_link)*sub.links);
//printf("*** begin unsplittalbe flow\n");
struct path pathtmp[MAX_REQ_LINKS*MAX_REQ_NODES];
int lentmp = 0;
for (i = start; i <= end; i ++) {
if (v2s[i].map == STATE_MAP_NODE || (v2s[i].map == STATE_MAP_LINK && option == ROUTE_MIGRATION)) {
flag = 0;
if (req[i].split == LINK_UNSPLITTABLE) {
for (j = 0; j < req[i].links; j ++) {
from = v2s[i].snode[req[i].link[j].from];
to = v2s[i].snode[req[i].link[j].to];
int newflag = 0;
t = 0;
memcpy(s2v_ltmp4, s2v_ltmp3, sizeof(struct s2v_link)*sub.links);
while (from != to) {
next = spath[from * sub.nodes +to].next;
if (next == -1) {
flag = 1;
break;
}
for (k = 0; k < sub.links; k ++) {
if ((sub.link[k].from == from && sub.link[k].to == next) || (sub.link[k].from == next && sub.link[k].to == from))
break;
}
if (k >= sub.links || s2v_ltmp3[k].rest_bw < req[i].link[j].bw) {
flag = 1;
break;
}
s2v_ltmp3[k].rest_bw -= req[i].link[j].bw;
from = next;
pathtmp[lentmp].link[t] = k;
t ++;
}
if (flag == 1) {
flag = 0;
memcpy(&sub1, &sub, sizeof(struct substrate_network));
do {
sub1.link[k].from = -1;
sub1.link[k].to = -1;
calc_shortest_path(spath1, &sub1);
from = v2s[i].snode[req[i].link[j].from];
to = v2s[i].snode[req[i].link[j].to];
t = 0;
newflag = 0;
memcpy(s2v_ltmp3, s2v_ltmp4, sizeof(struct s2v_link)*sub.links);
while (from != to) {
next = spath1[from * sub.nodes +to].next;
if (next == -1) {
flag = 1;
newflag = 1;
break;
}
for (k = 0; k < sub.links; k ++) {
if ((sub.link[k].from == from && sub.link[k].to == next) || (sub.link[k].from == next && sub.link[k].to == from))
break;
}
if (k >= sub.links || s2v_ltmp3[k].rest_bw < req[i].link[j].bw) {
newflag = 1;
break;
}
s2v_ltmp3[k].rest_bw -= req[i].link[j].bw;
from = next;
pathtmp[lentmp].link[t] = k;
t ++;
}
if (flag == 1) break;
} while(newflag == 1 && flag == 0);
if (flag == 1) {
*slink = k;
*vlink = j;
index = i;
return index;
}
}
pathtmp[lentmp].len = t;
lentmp ++;
}
}
}
}
int l = 0;
for (i = start; i <= end; i ++) {
if (v2s[i].map == STATE_MAP_NODE || (v2s[i].map == STATE_MAP_LINK && option == ROUTE_MIGRATION)) {
flag = 0;
if (req[i].split == LINK_UNSPLITTABLE) {
if (v2s[i].map == STATE_MAP_NODE) {
v2s[i].maptime = time;
}
v2s[i].map = STATE_MAP_LINK;
for (j = 0; j < req[i].links; j ++) {
v2s[i].spath[j].len = pathtmp[l].len;
for (k = 0; k < pathtmp[l].len; k ++) {
v2s[i].spath[j].link[k] = pathtmp[l].link[k];
add_link_map(s2v_l, pathtmp[l].link[k], i, j);
}
l ++;
}
}
}
}
free(s2v_ltmp3);
free(s2v_ltmp4);
//printf("unsplittable success\n");
return index;
}
int multicommodity_flow(struct s2v_node * s2v_n, struct s2v_link * s2v_l, struct req2sub * v2s, int start, int end, int option) {
FILE * fp;
fp = fopen("ltest.dat", "w");
int i, j, k;
int com_count = 0;
int flag = 0;
printf("req ");
for (i = start; i <= end; i ++) {
if (req[i].split == LINK_SPLITTABLE && (v2s[i].map == STATE_MAP_NODE || (v2s[i].map == STATE_MAP_LINK && option == ROUTE_MIGRATION))) {
printf(" %d",i);
com_count += req[i].links;
flag = 1;
}
}
printf("\n");
if (flag == 0) {
fclose(fp);
return -2;
}
printf("com_count %d\n", com_count);
int arcs = 2 * sub.links;// + com_count;
fprintf(fp, "%d %d %d %d %d\n", sub.nodes, arcs, com_count, sub.links, sub.links * 2 * com_count);
fprintf(fp, "ARC COSTS BY COMMODITIES\n");
for (i = 0; i < com_count; i ++) {
for (j = 0; j < 2*sub.links; j ++) {
fprintf(fp, "1.0 ");
}
/*for (j = 0; j < com_count; j ++) {
fprintf(fp, "-1+32 ");
}*/
fprintf(fp, "\n");
}
fprintf(fp, "ARC CAPACITIES BY COMMODITIES\n");
for (j = start; j<=end; j ++) {
if (req[j].split == LINK_SPLITTABLE && (v2s[j].map == STATE_MAP_NODE || (v2s[j].map == STATE_MAP_LINK && option == ROUTE_MIGRATION))) {
for (k = 0; k < req[j].links; k ++) {
for (i = 0; i < arcs; i ++) {
if (s2v_l[i/2].rest_bw < 0) s2v_l[i/2].rest_bw = 0;
fprintf(fp, "%.2f ", s2v_l[i/2].rest_bw);
}
fprintf(fp, "\n");
}
}
}
fprintf(fp, "NODE INJECTIONS BY COMMODITIES\n");
for (i = start; i <=end ; i ++) {
if (req[i].split == LINK_SPLITTABLE && (v2s[i].map == STATE_MAP_NODE || (v2s[i].map == STATE_MAP_LINK && option == ROUTE_MIGRATION))) {
for (j = 0; j < req[i].links; j ++) {
for (k = 0; k < sub.nodes; k ++) {
if (k == v2s[i].snode[req[i].link[j].from]) {
fprintf(fp, "%.2f ", req[i].link[j].bw);
} else {
if (k == v2s[i].snode[req[i].link[j].to]) {
fprintf(fp, "%.2f ", - req[i].link[j].bw);
} else {
fprintf(fp, "0 ");
}
}
}
fprintf(fp, "\n");
}
}
}
fprintf(fp, "ARC MUTUAL CAPACITIES\n");
for (i = 0; i < arcs; i ++) {
fprintf(fp, "1+32 ");
}
fprintf(fp, "\n");
fprintf(fp, "NETWORK TOPOLOGY\n");
for (i = 0; i < sub.links; i ++) {
fprintf(fp, "%d %d\n", sub.link[i].from + 1, sub.link[i].to + 1);
fprintf(fp, "%d %d\n", sub.link[i].to+1, sub.link[i].from+1);
}
/*for (i = start; i <= end; i ++) {
if (v2s[i].map == 1) {
for (j = 0; j < req[i].links; j ++) {
fprintf(fp, "%d %d\n", v2s[i].snode[req[i].link[j].to]+1, v2s[i].snode[req[i].link[j].from]+1);
}
}
}*/
fprintf(fp, "LOWER AND UPPER BOUNDS\n");
for (i = 0; i < sub.links; i ++)
fprintf(fp, "0 ");
fprintf(fp, "\n");
for (i = 0; i < sub.links; i ++) {
if (s2v_l[i].rest_bw < 0) s2v_l[i].rest_bw = 0;
fprintf(fp, "%.2f ", s2v_l[i].rest_bw);
}
fprintf(fp, "\n");
fprintf(fp, "SIDE CONSTRAINTS\n");
for (i = 0; i < sub.links; i ++) {
int p = 0;
for (j = start; j <= end; j ++) {
if (req[j].split == LINK_SPLITTABLE && (v2s[j].map == STATE_MAP_NODE || (v2s[j].map == STATE_MAP_LINK && option == ROUTE_MIGRATION))) {
for (k = 0; k < req[j].links; k ++) {
fprintf(fp, "%d %d %d 1\n", 2 * i + 1, p +1, i + 1);
fprintf(fp, "%d %d %d 1\n", 2 * i + 2, p +1, i + 1);
p +=1;
}
}
}
}
fclose(fp);
system("./lintest");
//sleep(1);
//printf("lintest ends\n");
return 0;
}
//check ltest output
//return -1 --success
//>0 suggest a node move/remove
int check_flow(struct s2v_node * s2v_n, struct s2v_link * s2v_l, struct req2sub * v2s, int start, int end, int option, int * slink, int * vlink, int time) {
//printf("*** begin check_flow\n");
FILE * fp;
char str[MAX_LEN];
struct s2v_link * s2v_ltmp;
s2v_ltmp = (struct s2v_link *)malloc(sizeof(struct s2v_link)* sub.links*2);
memset(s2v_ltmp, 0, sizeof(struct s2v_link)* sub.links*2);
double flow, cap, diff;
diff = 0;
int index,i, j, k, p, rvalue = 0;
*slink = -1;
*vlink = -1;
fp = fopen("ltest.lst", "r");
while (fgets(str, MAX_LEN, fp) != NULL) {
if (strstr(str, "STATUS") != NULL) {
break;
}
}
if (strstr(str, "INFEASIBLE") != NULL && strstr(str, "PHASE 0") != NULL) {
fclose(fp);
return -3;
}
if (strstr(str, "INFEASIBLE") != NULL && strstr(str, "PHASE 1") != NULL) {
rvalue = 0;
while (fgets(str, MAX_LEN, fp) != NULL) {
if (strstr(str, "VARIABLES") != NULL) {
break;
}
}
fgets(str, MAX_LEN, fp);
fgets(str, MAX_LEN, fp);
for (i = 0; i < sub.links * 2; i ++) {
for (j = start; j <= end; j ++) {
if (req[j].split == LINK_SPLITTABLE && (v2s[j].map == STATE_MAP_NODE || (v2s[j].map == STATE_MAP_LINK && option == ROUTE_MIGRATION))) {
for (k = 0; k < req[j].links; k ++) {
fgets(str, MAX_LEN, fp);
if (strstr(str, "LOWER") == NULL && strstr(str, "TREE") == NULL && strstr(str, "CMPLT") == NULL
&& strstr(str, "UPPER") == NULL && strstr(str, "SUPER") == NULL) {
k --;
continue;
}
int q;
sscanf(str, "%d %d %*s %lf %*f", &p, &q, &flow);
if (flow > 0) {
int t = s2v_ltmp[i].count;
s2v_ltmp[i].req[t] = j;
s2v_ltmp[i].vlink[t] = k;
s2v_ltmp[i].bw[t] = flow;
s2v_ltmp[i].count ++;
}
}
}
}
}
while (fgets(str, MAX_LEN, fp) != NULL) {
if (strstr(str, "SIDE CONSTRAINTS") != NULL) {
break;
}
}
fgets(str, MAX_LEN, fp);
fgets(str, MAX_LEN, fp);
for (i = 0; i < sub.links; i ++) {
strcpy(str, "");
fgets(str, MAX_LEN, fp);
if (strstr(str, "BASIC") == NULL && strstr(str, "UPPER") == NULL && strstr(str, "LOWER") == NULL
&& strstr(str, "SUPER") == NULL && strstr(str, "INFSB") == NULL) {
i --;
continue;
}
//if (end >= 52) {
// printf(str);
//}
sscanf(str, "%d %*s %*f %lf %lf", &p, &flow, &cap);
if (i != p - 1) {
printf("error %d %d\n", i, p);
}
if (flow - cap > diff) {
diff = flow - cap;
index = i;
}
}
//index +=1;
printf("most overload index %d\n", index);
int maxid = -1;
double maxbw = 0;
for (i = 0; i < s2v_ltmp[2 * index].count; i ++) {
//printf("bw %d %.2f\n", i, s2v_ltmp[2 * index].bw[i]);
if (s2v_ltmp[2 * index].bw[i] > maxbw) {
maxid = i;
maxbw = s2v_ltmp[2*index].bw[i];
}
}
for (i = 0; i < s2v_ltmp[2 * index+1].count; i ++) {
if (s2v_ltmp[2 * index+1].bw[i] > maxbw) {
maxid = i;
maxbw = s2v_ltmp[2*index+1].bw[i];
}
}
printf("most overload %d\n", maxid); //commodity number
*slink = index -1;
printf("check_flow start %d end %d\n", start, end);
//find the request no. and its virtual link no. from commodity no. maxid
int tmp = 0;
for (i = start; i <= end; i ++) {
if (req[i].split == LINK_SPLITTABLE && (v2s[i].map == STATE_MAP_NODE || (v2s[i].map == STATE_MAP_LINK && option == ROUTE_MIGRATION))) {
if (tmp + req[i].links > maxid) {
tmp = maxid - tmp;
break;
} else {
tmp += req[i].links;
}
}
}
rvalue = i;
*vlink = tmp;
printf("check_flow return req %d vlink %d slink %d\n", rvalue, *vlink, *slink);
//print_map(v2s);
//find the bad slink index-1, delete req i, vlink t
/*maxid = i;
v2s[maxid].map = -1;
for (j = 0; j < req[j].nodes; j ++) {
t = v2s[maxid].snode[j];
for (i = 0; i < s2v_n[t].req_count; i ++) {
if (s2v_n[t].req[i] == maxid) {
break;
}
}
s2v_n[t].rest_cpu += req[maxid].cpu[i];
for (k = i; k < s2v_n[t].req_count; k ++) {
s2v_n[t].req[k] = s2v_n[t].req[k+1];
s2v_n[t].vnode[k] = s2v_n[t].vnode[k+1];
s2v_n[t].cpu[k] = s2v_n[t].cpu[k+1];
}
s2v_n[t].req_count --;
}*/
} else {
if (strstr(str, "OPTIMAL") != NULL) {
//printf("check_flow optimal solution\n");
rvalue = -1;
while (fgets(str, MAX_LEN, fp) != NULL) {
if (strstr(str, "VARIABLES") != NULL) {
break;
}
}
fgets(str, MAX_LEN, fp);
fgets(str, MAX_LEN, fp);
p = 0;
int qcount;
for (i = 0; i < sub.links * 2; i ++) {
for (j = start; j <= end; j ++) {
if (req[j].split == LINK_SPLITTABLE && (v2s[j].map == STATE_MAP_NODE || (v2s[j].map == STATE_MAP_LINK && option == ROUTE_MIGRATION))) {
for (k = 0; k < req[j].links; k ++) {
fgets(str, MAX_LEN, fp);
if (strstr(str, "LOWER") == NULL && strstr(str, "TREE") == NULL && strstr(str, "CMPLT") == NULL
&& strstr(str, "UPPER") == NULL && strstr(str, "SUPER") == NULL) {
k --;
continue;
}
qcount ++;
//if (end > 200)
// printf("qcount %d, i %d, j %d, k %d, str %s\n", qcount, i, j, k , str);
int q;
sscanf(str, "%d %d %*s %lf %*f", &p, &q, &flow);
//printf("flow %d %d %lf\n", p, q, flow);
if (flow > 0) {
int t = s2v_l[i/2].count;
s2v_l[i/2].req[t] = j;
s2v_l[i/2].vlink[t] = k;
s2v_l[i/2].bw[t] = flow;
s2v_l[i/2].count ++;
if (flow > s2v_l[i/2].rest_bw + 0.001) {
//printf("slink %d flow %lf req.vlink %d.%d rest_bw %lf\n", i/2, flow, j, k, s2v_l[i/2].rest_bw);
s2v_l[i/2].rest_bw = 0;
} else {
s2v_l[i/2].rest_bw -= flow;
}
int m = v2s[j].spath[k].len;
v2s[j].spath[k].link[m] = i/2;
v2s[j].spath[k].len ++;
//printf("v2s[%d].spath[%d].len %d\n", j, k, v2s[j].spath[k].len);
}
}
}
}
}
for (j = start; j <= end; j ++) {
if (req[j].split == LINK_SPLITTABLE && v2s[j].map == STATE_MAP_NODE) {
v2s[j].map = STATE_MAP_LINK;
v2s[j].maptime = time;
}
}
}
}
printf("check_flow ends\n");
fclose(fp);
free(s2v_ltmp);
return rvalue;
}
//load balance cost
/*
double calculate_cost(int start, int end) {
//migration cost
//operation cost
double opcost = 0;
int i, j, count = 0;
double bwsum = 0, reqcost = 0;
for (i = start; i <=end ; i ++) {
bwsum = 0;
reqcost = 0;
if (v2s[i].map == 1) {
for (j = 0; j < req[i].links; j ++) {
bwsum += req[i].link[j].bw;
reqcost += req[i].link[j].bw * v2s[i].spath[j].len;
}
opcost +=reqcost/bwsum;
}
count ++;
}
return opcost/(double)count;
}
*/
double calculate_cost(struct req2sub * v2s, int start, int end) {
//migration cost
//operation cost
double opcost = 0;
int i, j, count = 0;
double bwsum = 0, reqcost = 0;
for (i = start; i <=end ; i ++) {
bwsum = 0;
reqcost = 0;
if (v2s[i].map == STATE_MAP_LINK) {
for (j = 0; j < req[i].links; j ++) {
bwsum += req[i].link[j].bw;
reqcost += req[i].link[j].bw * v2s[i].spath[j].len;
}
opcost +=reqcost;
count ++;
}
}
if (count == 0) return 0;
return opcost/(double)count;
}
int exist_req(struct req2sub * v2s, int start, int end) {
int i;
for (i = start; i < end; i ++) {
if (v2s[i].map == STATE_MAP_NODE) {
return 0;
}
}
return -1;
}
int allocate(int start, int end, int time) {
if (end == 602) {
printf("***");
}
memset(s2v_ntmp, 0, sizeof(struct s2v_node)* sub.nodes);
memset(s2v_ltmp, 0, sizeof(struct s2v_link)* sub.links);
memset(v2stmp, 0, sizeof(struct req2sub) * n);
memset(s2v_ntmp2, 0, sizeof(struct s2v_node)* sub.nodes);
memset(s2v_ltmp2, 0, sizeof(struct s2v_link)* sub.links);
memset(v2stmp2, 0, sizeof(struct req2sub) * n);
//print_s2v_l(s2v_l);
//print_map(v2s);
/*double T, Te, a, b, c;
a = 2;
b = 0.97;
c = 1.5;
T = 100;*/
//should choose different algo here.
int i, trycount;
for (i = 0; i < sub.nodes; i ++) {
s2v_ntmp[i].req_count = 0;
s2v_ntmp2[i].req_count = 0;
}
printf("allocate %d %d\n", start, end);
int checked[MAX_REQUESTS];
memset(checked, 0, MAX_REQUESTS);
int more = 1;
while (more == 1) {
more = 0;
int t;
int rid = -1, rev = -1;
for (t = start; t < end + 1; t ++) {
if ((v2s[t].map == STATE_NEW || v2s[t].map == STATE_MAP_NODE_FAIL) && req[t].revenue > rev && checked[t] == 0) {
rid = t;
rev = req[t].revenue;
more = 1;
}
}
if (rid == -1) break;
checked[rid] = 1;
switch (req[rid].topo) {
case TOPO_GENERAL:
map_node_greedy(s2v_n, s2v_l, v2s, rid);
break;
case TOPO_STAR:
//map_node_star(s2v_n, s2v_l, v2s, i);
map_node_greedy(s2v_n, s2v_l, v2s, rid);
break;
}
}
if (exist_req(v2s, start, end+1) == -1)
return -1;
double cost = -1, newcost = -1;
double load, min_rest_load;
int minid, reqid;
int j, index, flag =1;
int t = -1;
int bottleneck_req, slink, vlink;
int vnode, snode;
int original;
//simulated annealing
// while (T > 0.1) {
// Te = T/(double)a;
// while ( T - Te > 0.1) {
//TODO:checkpoint
trycount = 0;
bottleneck_req = unsplittable_flow(s2v_n, s2v_l, v2s, start, end, NO_MIGRATION, &slink, &vlink, time);
if (bottleneck_req == -1) {
int m = multicommodity_flow(s2v_n, s2v_l, v2s, start, end, NO_MIGRATION);
if (m == -1) {
printf("multi error\n");
return -1;
}
if (m != -2)
bottleneck_req = check_flow(s2v_n, s2v_l, v2s, start, end, NO_MIGRATION, &slink, &vlink, time);
else bottleneck_req = -1;
}
//printf("bottleneck_req %d\n", bottleneck_req);
while (flag) {
flag = 0;
//printf("map link %d %d\n", start, end);
memcpy(s2v_ntmp, s2v_n, sizeof(struct s2v_node)*sub.nodes);
memcpy(s2v_ltmp, s2v_l, sizeof(struct s2v_link)*sub.links);
memcpy(v2stmp, v2s, sizeof(struct req2sub)*n);
if (bottleneck_req == -1) { //success in get flow
/*if (newcost == -1) {
cost = calculate_cost(v2stmp, start, end);
printf("cost %.2f\n", cost);
} else {
cost = newcost;
printf("recalculating cost, old cost %.2f\n", cost);
}*/
cost = calculate_cost(v2stmp, start, end);
min_rest_load = -1;
minid = -1; //sub node no.
for (i = 0; i < sub.nodes; i ++) {
load = 0;
for (j = 0; j < sub.links; j ++) {
if (sub.link[j].from == i || sub.link[j].to ==i) {
load += s2v_ltmp[j].rest_bw;
}
}
load *= s2v_ntmp[i].rest_cpu;
if (load < min_rest_load || min_rest_load == -1) {
min_rest_load = load;
minid = i;
}
}
reqid = (int)(rand()/(double)RAND_MAX * s2v_ntmp[minid].req_count); //find one req on this sub node
index = s2v_ntmp[minid].req[reqid];//get the request number
i = s2v_ntmp[minid].vnode[reqid];
//now we get "index" req vnode "i" on sub node "minid"
//remove old node
snode = minid;
vnode = i;
printf("remove vnode %d %d on sub node %d\n", index, i, minid);
original = minid;
t = find_MaxNeighborResource_node(s2v_ntmp, s2v_ltmp, s2v_ntmp[snode].cpu[reqid], index, original);
if (t == -1) {
printf("req %d unsatisfied\n", index);
//release_resource(s2v_ntmp, s2v_ltmp, v2stmp, index);
//v2stmp[index].map = STATE_MAP_NODE_FAIL;
break;
} else {
//add new mapping
remove_node_map(s2v_ntmp, minid, reqid);
add_node_map(s2v_ntmp, v2stmp, t, index, vnode);
}
trycount = 0;
if (exist_req(v2stmp, start, end+1) == -1)
break;
} else {
if (bottleneck_req == -3) {
trycount = TIMES_TRY + 1;
int m;
for (m = start; m <=end; m ++) {
if (v2stmp[m].map == STATE_MAP_NODE && req[m].split == LINK_SPLITTABLE) {
bottleneck_req = m;
break;
}
}
}
//cost = -1;
cost = -1;
trycount ++;
printf("trycount %d\n", trycount);
if (trycount > TIMES_TRY) {
release_resource(s2v_ntmp, s2v_ltmp, v2stmp, bottleneck_req);
//printf("remove0\n");
v2stmp[bottleneck_req].map = STATE_MAP_NODE_FAIL;
trycount = 0;
/*for (i = 0; i < req[bottleneck_req].nodes; i ++) {
int snode = v2stmp[bottleneck_req].snode[i];
for (j = 0; j < s2v_ntmp[snode].req_count; j ++) {
if (s2v_ntmp[snode].req[j] == bottleneck_req) {
break;
}
}
printf("remove1\n");
remove_node_map(s2v_ntmp, snode, j);
} */
} else {
if (rand()/(double)RAND_MAX < 0.5) {
vnode = req[bottleneck_req].link[vlink].from;
} else {
vnode = req[bottleneck_req].link[vlink].to;
}
int snode = v2stmp[bottleneck_req].snode[vnode];
for (i = 0; i < s2v_ntmp[snode].req_count; i ++) {
if (s2v_ntmp[snode].req[i] == bottleneck_req) {
break;
}
}
//printf("remove2\n");
original = snode;
reqid = i;
index = bottleneck_req;
t = find_MaxNeighborResource_node(s2v_ntmp, s2v_ltmp, s2v_ntmp[snode].cpu[reqid], index, original);
if (t == -1) {
printf("req %d unsatisfied\n", index);
release_resource(s2v_ntmp, s2v_ltmp, v2stmp, index);
v2stmp[index].map = STATE_MAP_NODE_FAIL;
trycount = 0;
} else {
//add new mapping
remove_node_map(s2v_ntmp, snode, i);
add_node_map(s2v_ntmp, v2stmp, t, index, vnode);
}
}
if (exist_req(v2stmp, start, end+1) == -1) {
memcpy(s2v_n, s2v_ntmp, sizeof(struct s2v_node)*sub.nodes);
memcpy(s2v_l, s2v_ltmp, sizeof(struct s2v_link)*sub.links);
memcpy(v2s, v2stmp, sizeof(struct req2sub)*n);
break;
}
}
//move node
//find an optional node
bottleneck_req = unsplittable_flow(s2v_ntmp, s2v_ltmp, v2stmp, start, end, NO_MIGRATION, &slink, &vlink, time);
if (bottleneck_req == -1) {
int m = multicommodity_flow(s2v_ntmp, s2v_ltmp, v2stmp, start, end, NO_MIGRATION);
if (m == -1)
return -1;
if (m != -2)
bottleneck_req = check_flow(s2v_ntmp, s2v_ltmp, v2stmp, start, end, NO_MIGRATION, &slink, &vlink, time);
else bottleneck_req = -1;
}
//printf("bottleneck_req %d\n", bottleneck_req);
if (cost == -1) {
memcpy(s2v_n, s2v_ntmp, sizeof(struct s2v_node)*sub.nodes);
memcpy(s2v_l, s2v_ltmp, sizeof(struct s2v_link)*sub.links);
memcpy(v2s, v2stmp, sizeof(struct req2sub)*n);
flag = 1;
continue;
}
newcost = calculate_cost(v2stmp, start, end);
printf("new cost %.2f\n", newcost);
if (newcost < cost || newcost == -1) {
//TODO: copy new solution
memcpy(s2v_n, s2v_ntmp, sizeof(struct s2v_node)*sub.nodes);
memcpy(s2v_l, s2v_ltmp, sizeof(struct s2v_link)*sub.links);
memcpy(v2s, v2stmp, sizeof(struct req2sub)*n);