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simpleclient.cpp
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simpleclient.cpp
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/*
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File: simpleclient.C
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Author: R. Bettati
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Department of Computer Science
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Texas A&M University
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Date : 2013/01/31
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Simple client main program for MP3 in CSCE 313
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*/
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/*--------------------------------------------------------------------------*/
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/* DEFINES */
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/*--------------------------------------------------------------------------*/
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/* -- (none) -- */
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/*--------------------------------------------------------------------------*/
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/* INCLUDES */
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/*--------------------------------------------------------------------------*/
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#include <cassert>
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#include <cstring>
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#include <iostream>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <pthread.h>
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#include <errno.h>
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#include <unistd.h>
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#include "reqchannel.h"
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#include "semaphore.h"
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#include "BoundedBuffer.h"
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using namespace std;
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/*--------------------------------------------------------------------------*/
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/* DATA STRUCTURES */
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/*--------------------------------------------------------------------------*/
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/* none */
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/*--------------------------------------------------------------------------*/
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/* CONSTANTS */
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/*--------------------------------------------------------------------------*/
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BoundedBuffer Request_Buffer;
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BoundedBuffer Response_Buffer[3];
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BoundedBuffer RB1;
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vector<int> John_vec(100);
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vector<int> Jane_vec(100);
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vector<int> Joe_vec(100);
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int n = 1000, b = 100, w = 5;//set defaults
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/*--------------------------------------------------------------------------*/
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/* FORWARDS */
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/*--------------------------------------------------------------------------*/
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void* Req_Thread(void* args);
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void* Worker_Thread(void* args);
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void* Stat_Thread(void* args);
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/*--------------------------------------------------------------------------*/
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/* MAIN FUNCTION */
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/*--------------------------------------------------------------------------*/
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int main(int argc, char * argv[]) {
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int option = -1;
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while ((option = getopt(argc, argv, "n:b:w:")) != -1){
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switch (option){
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case 'n' :
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n = atoi(optarg);
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break;
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case 'b' :
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b = atoi(optarg);
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break;
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case 'w' :
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w = atoi(optarg);
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break;
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}
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}
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pid_t pid = fork();
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if(pid != 0){
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Request_Buffer.set_empty(b);
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Response_Buffer[0].set_empty(b);
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Response_Buffer[1].set_empty(b);
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Response_Buffer[2].set_empty(b);
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RequestChannel chan("control", RequestChannel::CLIENT_SIDE);
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pthread_t request_thread_ids[3];
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pthread_t worker_thread_ids[w];
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pthread_t statistic_thread_ids[3];
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RequestChannel* worker_return[w];
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//---------------------------------------------
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//------- pthread_create -------
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//---------------------------------------------
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int index[3];
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for(int i=0; i < 3; i++){
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index[i] = i;
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pthread_create(&request_thread_ids[i], NULL, Req_Thread, (void *)&index[i]);
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}
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for(int i=0; i < w; i++){
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string channel_name = chan.send_request("newthread");
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worker_return[i] = new RequestChannel(channel_name, RequestChannel::CLIENT_SIDE);
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pthread_create(&worker_thread_ids[i], NULL, Worker_Thread, worker_return[i]);
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}
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for(int i=0; i < 3; i++){
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pthread_create(&statistic_thread_ids[i], NULL, Stat_Thread, (void *)&i);
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}
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//---------------------------------------------
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//-------- pthread_join --------
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//---------------------------------------------
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for(int i=0; i < 3; i++){
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pthread_join(request_thread_ids[i], NULL);
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}
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for(int i=0; i < w; i++){
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pthread_join(worker_thread_ids[i], NULL);
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}
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for(int i=0; i < 3; i++){
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pthread_join(statistic_thread_ids[i], NULL);
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}
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for(int i=0; i < w; i++){
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worker_return[i]->send_request("quit");
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}
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cout << "\n\n HISTOGRAM \n";
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int ct = 0;
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for(int i=0; i < 100; i++){
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cout << "Num: " << i << "\tTimes: " << John_vec[i] << endl;
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}
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//STILL NEED TO OUTPUT THE HISTOGRAM SOMEHOW....
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chan.send_request("quit");
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}else{
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execl("dataserver", 0);
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}
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usleep(1000000);
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}
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void* Worker_Thread(void* arg){
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RequestChannel* chann = (RequestChannel*)arg;
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while(true){
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string request = Request_Buffer.pop();
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string response = chann->send_request(request);
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if(request == "data Joe Smith"){
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Response_Buffer[0].push(response);
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}else if(request == "data Jane Smith"){
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Response_Buffer[1].push(response);
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}else if(request == "data John Doe"){
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Response_Buffer[2].push(response);
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}else if(request == "quit"){ //Break out of the thread if quit response is found
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break;
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}
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}
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}
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void* Req_Thread(void* arg){
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int person = *(int*)arg;
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cout << "PERSON: " << person << endl;
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switch(person){
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case 0:
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for(int i=0; i < n; i++){ Request_Buffer.push("data Joe Smith"); cout << "JOE";}
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break;
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case 1:
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for(int i=0; i < n; i++){ Request_Buffer.push("data Jane Smith"); cout << "JANE";}
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break;
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case 2:
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for(int i=0; i < n; i++){ Request_Buffer.push("data John Doe"); cout << "JOHN";}
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break;
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}
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}
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void* Stat_Thread(void* arg){
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//send to proper response buffer based on which name is found!
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int person = *(int*)arg;
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string num;
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if(person == 0){
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for(int i=0; i < n; i++){
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num = Response_Buffer[0].pop();
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int v = atoi(num.c_str());
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John_vec[v] = John_vec[v] + 1;
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}
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}else if(person == 1){
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for(int i=0; i < n; i++){
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num = Response_Buffer[1].pop();
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cout << "\nPERSON1: " << num << endl;
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int v = atoi(num.c_str());
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Jane_vec[v] = Jane_vec[v] + 1;
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}
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}else if(person == 2){
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for(int i=0; i < n; i++){
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num = Response_Buffer[2].pop();
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int v = atoi(num.c_str());
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John_vec[v] = John_vec[v] + 1;
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}
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}
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}
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