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worker.c
272 lines (204 loc) · 7.49 KB
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worker.c
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#include "worker.h"
void* workerFunction(void* arg) {
struct worker* worker = arg;
printf("Creating worker on tid %u\n", (unsigned int)pthread_self());
/* int s;
cpu_set_t cpuset;
pthread_t thread;
thread = pthread_self(); */
// sgenrand(worker->cpu_num, worker->config->random_seed);
struct timeval timestamp;
gettimeofday(×tamp, NULL);
int seed=(timestamp.tv_usec+worker->cpu_num)%2309;
sgenrand(seed, &(worker->myMT19937p));
// sgenrand(worker->config->random_seed, &(worker->myMT19937p));
/* Set affinity mask to include CPUs 0 to 7 */
/* CPU_ZERO(&cpuset);
CPU_SET(worker->cpu_num, &cpuset);
s = pthread_setaffinity_np(thread, sizeof(cpu_set_t), &cpuset);
if (s != 0) {
printf("Couldn't set CPU affinity\n");
} else {
printf("Set tid %u affinity to CPU %d\n", (unsigned int)pthread_self(), worker->cpu_num);
}
*/
workerLoop(worker);
return NULL;
}//End workerFunction()
void workerLoop(struct worker* worker) {
event_base_priority_init(worker->event_base, 2);
//Seed event for each fd
int i;
for( i = 0; i < worker->nConnections; i++) {
struct event* ev = event_new(worker->event_base, worker->connections[i]->sock, EV_WRITE|EV_PERSIST, sendCallback, worker);
event_priority_set(ev, 1);
event_add(ev, NULL);
ev = event_new(worker->event_base, worker->connections[i]->sock, EV_READ|EV_PERSIST, receiveCallback, worker);
event_priority_set(ev, 2);
event_add(ev, NULL);
}//End for i
gettimeofday(&(worker->last_write_time), NULL);
printf("starting receive base loop\n");
int error = event_base_loop(worker->event_base, 0);
if(error == -1) {
printf("Error starting libevent\n");
} else if(error == 1) {
printf("No events registered with libevent\n");
}
printf("base loop done\n");
}//End workerLoop()
int pushRequest(struct worker* worker, struct request* request) {
// printf("push: size %d head %d tail %d\n", worker->n_requests, worker->head, worker->tail);
if(worker->n_requests == QUEUE_SIZE){
printf("Reached queusize max\n");
return 0;
}
worker->request_queue[worker->tail] = request;
worker->tail = (worker->tail + 1) % QUEUE_SIZE;
worker->n_requests++;
return 1;
}//End pushRequest()
struct request* getNextRequest(struct worker* worker) {
if(worker->n_requests == 0) {
return NULL;
}
struct request* request = worker->request_queue[worker->head];
worker->head = (worker->head + 1) % QUEUE_SIZE;
worker->n_requests--;
return request;
}//End getNextRequest()
void sendCallback(int fd, short eventType, void* args) {
struct worker* worker = args;
struct timeval timestamp, timediff, timeadd;
gettimeofday(×tamp, NULL);
timersub(×tamp, &(worker->last_write_time), &timediff);
double diff = timediff.tv_usec * 1e-6 + timediff.tv_sec;
struct int_dist* interarrival_dist = worker->config->interarrival_dist;
int interarrival_time = 0;
//Null interarrival_dist means no waiting
if(interarrival_dist != NULL){
if(worker->interarrival_time <= 0){
interarrival_time = getIntQuantile(interarrival_dist); //In microseconds
// printf("new interarrival_time %d\n", interarrival_time);
worker->interarrival_time = interarrival_time;
} else {
interarrival_time = worker->interarrival_time;
}
if( interarrival_time/1.0e6 > diff){
return;
}
}
worker->interarrival_time = -1;
timeadd.tv_sec = 0; timeadd.tv_usec = interarrival_time;
timeradd(&(worker->last_write_time), &timeadd, &(worker->last_write_time));
struct request* request = NULL;
if(worker->incr_fix_queue_tail != worker->incr_fix_queue_head) {
request = worker->incr_fix_queue[worker->incr_fix_queue_head];
worker->incr_fix_queue_head = (worker->incr_fix_queue_head + 1) % INCR_FIX_QUEUE_SIZE;
// printf("fixing\n");
} else {
// printf(")preload %d warmup key %d\n", worker->config->pre_load, worker->warmup_key);
if(worker->config->pre_load == 1 && worker->warmup_key < 0) {
return;
} else {
request = generateRequest(worker->config, worker);
}
}
if(request->header.opcode == OP_SET){
// printf("Generated SET request of size %d\n", request->value_size);
}
if( !pushRequest(worker, request) ) {
//Queue is full, bail
// printf("Full queue\n");
deleteRequest(request);
return;
}
sendRequest(request);
}//End sendCallback()
void receiveCallback(int fd, short eventType, void* args) {
struct worker* worker = args;
struct request* request = getNextRequest(worker);
if(request == NULL) {
printf("Error: Tried to get a null request\n");
return;
}
struct timeval readTimestamp, timediff;
gettimeofday(&readTimestamp, NULL);
timersub(&readTimestamp, &(request->send_time), &timediff);
double diff = timediff.tv_usec * 1e-6 + timediff.tv_sec;
receiveResponse(request, diff);
deleteRequest(request);
worker->received_warmup_keys++;
if(worker->config->pre_load == 1 && worker->config->dep_dist != NULL && worker->received_warmup_keys == worker->config->keysToPreload){
printf("You are warmed up, sir\n");
exit(0);
}
}//End receiveCallback()
void readF(int* temp){
FILE *fp;
char buff[4]={0};
fp = fopen("cpu.txt","r");
if(!fp) return;
*temp=0;
while (fgets(buff,4, fp)!=NULL){
printf("%s",buff);
*temp=atoi(buff);
}
fclose(fp);
}
void writeF(int temp){
FILE *fp;
fp = fopen("cpu.txt","a");
fprintf(fp, "%d\n",temp);
fclose(fp);
}
void createWorkers(struct config* config) {
config->workers = malloc(sizeof(struct worker*)*config->n_workers);
int i;
for( i = 0; i < config->n_workers; i++) {
config->workers[i] = createWorker(config, i);
}
if(config->n_workers > config->n_connections_total ) {
printf("Overridge n_connections_total because < n_workers\n");
config->n_connections_total = config->n_workers;
}
int total_connections = 0;
for(i = 0; i < config->n_workers; i++) {
int num_worker_connections = config->n_connections_total/config->n_workers + (i < config->n_connections_total % config->n_workers);
printf("num_worker_connections %d\n", num_worker_connections);
total_connections += num_worker_connections;
config->workers[i]->connections = malloc(sizeof(struct conn*) * num_worker_connections);
config->workers[i]->nConnections = num_worker_connections;
config->workers[i]->received_warmup_keys = 0;
int j;
int server=i % config->n_servers;
for(j = 0; j < num_worker_connections; j++) {
config->workers[i]->connections[j] = createConnection(config->server_ip_address[server], config->server_port[server], config->protocol_mode, config->naggles);
}
int rc;
//Create receive thread
rc = pthread_create(&config->workers[i]->thread, NULL, workerFunction, config->workers[i]);
if(rc) {
printf("Error creating receive thread\n");
}
}
printf("Created %d connections total\n", total_connections);
}//createWorkers()
struct worker* createWorker(struct config* config, int cpuNum) {
//Create connections
struct worker* worker = malloc(sizeof(struct worker));
worker->event_base = event_base_new();
worker->config = config;
worker->head = 0;
worker->tail = 0;
worker->n_requests = 0;
worker->cpu_num = cpuNum;
worker->interarrival_time = 0;
worker->incr_fix_queue_tail = 0; // THSES probably need to be fixed
worker->incr_fix_queue_head = 0;
if(config->dep_dist != NULL && config->pre_load) {
worker->warmup_key = config->keysToPreload-1;
worker->warmup_key_check = 0;
}
return worker;
}//End createWorker()