Ajay Mohan / Rasperf

Commit 8a0c6a1f7218a89e38f9d022820c5e95e5c21141

Authored by Ajay Mohan 2016-03-11 00:38:24 -0800

Exists in master

TCP Rtt Server

Showing 5 changed files with 192 additions and 0 deletions Inline Diff

cpu/thd_ctx_mtx.c
cpu/thd_ctxsw
cpu/thd_ctxsw.c
cpu/thd_mtx
network/tcp_rtt_server.c

File was created	1	#include<stdio.h>
	2	#include<stdlib.h>
	3	#include<unistd.h>
	4	#include<pthread.h>
	5	#include<sys/time.h>
	6	#include "rasperf.h"
	7	#define NUM_THREADS 2
	8	#define ITERATIONS 1000
	9
	10	pthread_mutex_t LOCK;
	11	pthread_mutex_t TRIGGER;
	12	pthread_cond_t COND;
	13	volatile unsigned int cs_count = 0;
	14
	15	// Uptil now TRIGGER WAS LOCKED AND THEN RELEASED
	16	void * function(void *id){
	17	int t_id = (int )id;
	18
	19	// Wait for trigger from parent
	20	pthread_mutex_lock(&TRIGGER);
	21	pthread_mutex_unlock(&TRIGGER); // So that both start at the same time
	22	// Get lock
	23	pthread_mutex_lock(&LOCK); //only one thread passes in
	24
	25	// Wake up other thread if context switch count is greater than 0
	26	if (cs_count > 0){
	27	pthread_cond_signal(&COND);
	28	}
	29
	30	while(cs_count < ITERATIONS) {
	31
	32	// Wait for other thread to wake up us
	33	cs_count++; //Increment cs count
	34	pthread_cond_wait(&COND, &LOCK); //release LOCK and wait for COND
	35
	36	// wake up other thread
	37	pthread_cond_signal(&COND);
	38	}
	39	pthread_mutex_unlock(&LOCK);
	40	pthread_exit(NULL);
	41	}
	42
	43
	44	int main(){
	45
	46	pthread_t threads[NUM_THREADS];
	47	int rc, i,id1=1, id2=2;
	48	time start, end;
	49	int t;
	50
	51	pthread_mutex_init(&LOCK, NULL); // to protect CS
	52	pthread_mutex_init(&TRIGGER, NULL); //This is to start at the same time
	53	pthread_cond_init(&COND, NULL); // to wake each other
	54
	55	pthread_mutex_lock(&TRIGGER); //to stop the threads we are going to create
	56
	57
	58	rc = pthread_create(&threads[0], NULL, function, (void*)&id1); //create first thread
	59	if (rc){
	60	perror("Thread creation failed!");
	61	}
	62	rc = pthread_create(&threads[1], NULL, function, (void*)&id2); //create second thread
	63	if (rc){
	64	perror("Thread creation failed!");
	65	}
	66
	67	getTime(start); // start time

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File was created	1	#define _GNU_SOURCE
	2	#include<sched.h>
	3	#include "rasperf.h"
	4	#include<stdio.h>
	5	#include<unistd.h>
	6	#include<stdlib.h>
	7	#include<signal.h>
	8	#define STACK_SIZE 4096
	9	int pipe_fd[2], tid1, tid2;
	10	char buffer[10];
	11	int reader(void* arg);
	12	int writer(void* arg);
	13	int controller(void *arg)
	14	{
	15	void *tid1_stack = malloc(STACK_SIZE);
	16	void *tid2_stack = malloc(STACK_SIZE);
	17	tid1 = clone(&writer, tid1_stack+STACK_SIZE, SIGCHLD\|CLONE_SIGHAND\|CLONE_FS\|CLONE_VM\|CLONE_FILES\|CLONE_THREAD, NULL);
	18	tid2 = clone(&reader, tid2_stack+STACK_SIZE, SIGCHLD\|CLONE_SIGHAND\|CLONE_FS\|CLONE_VM\|CLONE_FILES\|CLONE_THREAD, NULL);
	19	return 0;
	20	}
	21	int reader(void* arg)
	22	{
	23	read(pipe_fd[0], buffer, 1);
	24	return 0;
	25	}
	26	int writer(void* arg)
	27	{
	28	write(pipe_fd[1], "a", 1);
	29	return 0;
	30	}
	31	int main(){
	32
	33	unsigned int regr;
	34	time start, end;
	35	unsigned int avg;
	36	int status, i;
	37	void *child_stack = malloc(STACK_SIZE);
	38	int thread_pid;
	39
	40	//asm volatile("mrc p15, 0, %0, c9, c14, 0" : "=r" (regr));
	41	//printf("regr: %x\n", regr);
	42
	43	//initialize communication pipe
	44	for (i = 0; i < 1000; i++)
	45	{
	46	getTime(start);
	47	thread_pid = clone(&controller, child_stack+STACK_SIZE, SIGCHLD\|CLONE_SIGHAND\|CLONE_FS\|CLONE_VM\|CLONE_FILES\|CLONE_THREAD, NULL);
	48	waitpid(thread_pid, 0, 0);
	49	getTime(end);
	50	printf("\nTime Taken %d", diff(end,start));

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File was created	1	#include "../rasperf.h"
	2	#include<arpa/inet.h>
	3	#include<sys/typesh>
	4	#include<sys/socket.h>
	5	#include<netdb.h>
	6
	7	//Macro definitions
	8	#define handle_error(msg) \
	9	do { perror(msg); exit(EXIT_FAILURE);} while(0)
	10	#define LISTEN_BACKLOG 5
	11	int main(int argc, char*argv[])
	12	{
	13	int socket_fd, rc;
	14	if(argc<1){
	15	handle_error("<usage>:");
	16	}
	17	//Retrieve the protocol number mapping
	18	//from /etc/protocols file
	19	struct protoent *proto_entry;
	20	proto_entry = getprotobyname("tcp");
	21
	22	//Open an socket end-point for this TCP Server
	23	socket_fd = socket(AF_INET, SOCK_STREAM, proto_entry->p_proto);
	24	if(socket_fd == -1){
	25	handle_error("Errno: %d,Socket descriptor creation failed", errorno);
	26	}
	27
	28	//My address information to bind to
	29	struct sockaddr sock_addr;
	30	memset(&sock_addr, 0, sizeof(struct sockaddr));
	31	sock_addr.sa_family = AF_INET;
	32	sock_addr.sin_addr.s_addr = htonl(INADDR_ANY);
	33	sock_addr.sin_port = htons(8000);
	34
	35
	36	rc = bind(sock_fd, &sock_addr, sizeof(sock_addr));
	37	if(rc == -1){
	38	handle_error("Errno: %d, Bind failure", errorno);
	39	}
	40	rc = listen(socket_fd, LISTEN_BACKLOG);
	41	if(rc == -1){
	42	handle_error("Errno: %d, Listen Error", errorno);
	43	}