From 7a73162607544204032aa66cce755daf21edebda Mon Sep 17 00:00:00 2001
From: Matt Strapp <matt@mattstrapp.net>
Date: Tue, 24 May 2022 11:18:46 -0500
Subject: Graduate

Signed-off-by: Matt Strapp <matt@mattstrapp.net>
---
 .../112320_breakout/sol-condition_variables.c      | 128 ---------------------
 1 file changed, 128 deletions(-)
 delete mode 100644 OLD/csci4061/112320_breakout/sol-condition_variables.c

(limited to 'OLD/csci4061/112320_breakout/sol-condition_variables.c')

diff --git a/OLD/csci4061/112320_breakout/sol-condition_variables.c b/OLD/csci4061/112320_breakout/sol-condition_variables.c
deleted file mode 100644
index 86cafb1..0000000
--- a/OLD/csci4061/112320_breakout/sol-condition_variables.c
+++ /dev/null
@@ -1,128 +0,0 @@
-#define NUM_ARGS 0
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <dirent.h>
-#include <string.h>
-#include <time.h>
-#include <pthread.h>
-#include <semaphore.h>
-#include <sys/time.h>
-
-long condTotal = 0;
-
-struct queue {
-
-	int vals[100];
-	int index; //indicates the next available spot
-};
-
-struct condQueue {
-
-	struct queue* q;
-	pthread_cond_t* cond;
-	pthread_mutex_t* mutex;
-};
-
-
-
-void insert(struct queue* q, int val) {
-
-	q->vals[q->index] = val;
-	++q->index;
-}
-
-int delete(struct queue* q) {
-
-	--q->index;
-	int val = q->vals[q->index];
-	return val;
-}
-
-// TODO: Insert code to use a condition variable.
-void *condProducer(void* arg) {
-
-	// Random delay. DO NOT REMOVE!
-	usleep(rand() % 1000);
-
-	struct condQueue* cq = (struct condQueue*) arg;
-
-	pthread_mutex_lock(cq->mutex);
-
-	// Counter.
-	static int in = 0;
-	++in;
-
-	// Add an element to the queue.
-	insert(cq->q, in);
-
-	pthread_cond_signal(cq->cond); //to send signal to any waiting consumer
-	pthread_mutex_unlock(cq->mutex);
-}
-
-// TODO: Insert code to use a condition variable.
-void *condConsumer(void* arg) {
-
-	// Random delay. DO NOT REMOVE!
-	usleep(rand() % 1000);
-
-	struct condQueue* cq = (struct condQueue*) arg;
-
-	pthread_mutex_lock(cq->mutex);
-	while (cq->q->index < 1) pthread_cond_wait(cq->cond, cq->mutex);//wait if buffer is empty
-
-	// Remove an element from the queue.
-	condTotal += delete(cq->q);
-
-	pthread_mutex_unlock(cq->mutex);
-}
-
-int main(int argc, char** argv) {
-
-	if (argc != NUM_ARGS + 1) {
-
-		printf("Wrong number of args, expected %d, given %d\n", NUM_ARGS, argc - 1);
-		exit(1);
-	}
-
-	// Seed the random generator.
-	srand(time(NULL));
-
-	// Create threads.
-	pthread_t condPool[100];
-
-	struct timeval start;
-	gettimeofday(&start, NULL);
-
-	// Create the cond variable controlled task queue.
-	struct condQueue* cq = (struct condQueue*) malloc(sizeof(struct condQueue));
-	cq->q = (struct queue*) malloc(sizeof(struct queue));
-	cq->q->index=0;
-
-	// Allocate memory and initialize condition variable and mutex
-	cq->cond = (pthread_cond_t*) malloc(sizeof(pthread_cond_t));
-	cq->mutex = (pthread_mutex_t*) malloc(sizeof(pthread_mutex_t));
-	pthread_cond_init(cq->cond, NULL);
-	pthread_mutex_init(cq->mutex, NULL);
-
-	// Launch them.
-	for (int i=0; i < 50; ++i) {
-
-		pthread_create(&condPool[i], NULL, condProducer, (void*) cq); //start 50 producer threads
-		pthread_create(&condPool[50 + i], NULL, condConsumer, (void*) cq); //start 50 consumer threads
-	}
-
-	for (int i=0; i < 100; ++i) pthread_join(condPool[i], NULL); //wait for all the threads to be finished
-
-	struct timeval end;
-	gettimeofday(&end, NULL);
-
-	printf("Cond Test: \nTotal of buffer = %ld\n", condTotal);
-	printf("Time (in us) to run = %ld\n\n", ((end.tv_sec - start.tv_sec) * 1000000) + (end.tv_usec - start.tv_usec));
-
-	}
-- 
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