Add working but shit a4 implementation

Assignment4/.idea/runConfigurations/Assignment4_Input_1.xml

@@ -0,0 +1,7 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="Assignment4 Input 1" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="true" REDIRECT_INPUT_PATH="$PROJECT_DIR$/documentation/a4_sample_input_1.txt" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="Assignment4" TARGET_NAME="Assignment4" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="Assignment4" RUN_TARGET_NAME="Assignment4">
+    <method v="2">
+      <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
+    </method>
+  </configuration>
+</component>

Assignment4/.idea/runConfigurations/Assignment4_Input_2.xml

@@ -0,0 +1,7 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="Assignment4 Input 2" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="true" REDIRECT_INPUT_PATH="$PROJECT_DIR$/documentation/a4_sample_input_2.txt" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="Assignment4" TARGET_NAME="Assignment4" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="Assignment4" RUN_TARGET_NAME="Assignment4">
+    <method v="2">
+      <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
+    </method>
+  </configuration>
+</component>

Assignment4/.idea/runConfigurations/Assignment4_Manual_Input.xml

@@ -0,0 +1,7 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="Assignment4 Manual Input" type="CMakeRunConfiguration" factoryName="Application" REDIRECT_INPUT="false" REDIRECT_INPUT_PATH="$PROJECT_DIR$/documentation/a4_sample_input_1.txt" ELEVATE="false" USE_EXTERNAL_CONSOLE="false" EMULATE_TERMINAL="false" PASS_PARENT_ENVS_2="true" PROJECT_NAME="Assignment4" TARGET_NAME="Assignment4" CONFIG_NAME="Debug" RUN_TARGET_PROJECT_NAME="Assignment4" RUN_TARGET_NAME="Assignment4">
+    <method v="2">
+      <option name="com.jetbrains.cidr.execution.CidrBuildBeforeRunTaskProvider$BuildBeforeRunTask" enabled="true" />
+    </method>
+  </configuration>
+</component>

Assignment4/lib/process.h

@@ -1,9 +1,9 @@
-#ifndef NODE_H
+#ifndef PROCESS_H
-#define NODE_H
+#define PROCESS_H
 
 typedef struct Process {
-	struct process *prev_elem;
+	struct Process *prev_elem;
-	struct process *next_elem;
+	struct Process *next_elem;
     char *username;
 	char job;
 	int arrival_time;
@@ -14,4 +14,4 @@ Process *createProcess(char *username, char job, int arrival_time, int duration)
 
 void destroyProcess(Process *node);
 
-#endif //NODE_H
+#endif //PROCESS_H

Assignment4/lib/queue.c

@@ -62,13 +62,15 @@ Process *dequeue(Queue *queue) {
     }
     Process *temp = queue->end; // Store the end of the queue for returning later
 
+    if (queue->size == 1) { // If the queue has one element, set the start and end to NULL
+        queue->start = NULL;
+        queue->end = NULL;
+        queue->size--;
+        return temp;
+    }
 	queue->end = queue->end->prev_elem; // Set the end to the previous element
     queue->end->next_elem = NULL; // Set the next element of the new end to NULL
 
-	if (queue->end == NULL) { // If the queue is empty, set the start to NULL
-		queue->start = NULL;
-	}
-
 	temp->prev_elem = NULL; // The dequeued element should not point to anything
 	queue->size--;
 	return temp;

Assignment4/round_robin.c

@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <string.h>
 #include "lib/queue.h"
 
 #define MAX_USERNAME_LENGTH 100
@@ -16,7 +17,9 @@ Queue* input_queue() {
     char username[MAX_USERNAME_LENGTH];
     char job;
     int arrival_time, duration;
-	while(scanf("%s100 %c %d %d", username, &job, &arrival_time, &duration) != EOF) {
+    while (getchar() != '\n'); // clear the newline from the buffer
+    while (getchar() != '\n'); // ignore the rest of the line
+    while (scanf("%99s %c %d %d", username, &job, &arrival_time, &duration) != EOF) {
         Process *process = createProcess(username, job, arrival_time, duration);
         enqueue(queue, process);
     }
@@ -25,29 +28,78 @@ Queue* input_queue() {
 
 
 void simulation(Queue *queue) {
-	printf("Time\tJob\n");
+    printf("Time Job\n");
-	int time = 0;
+    int time = 1;
     Queue *sim_queue = createQueue();
+    Process *process = queue->end;
+    // 24 since the max number of processes is 24
+    Summary summary[24];
+    int summary_size = sizeof(summary) / sizeof(summary[0]);
+    int how_many = 0;
+    for (int i = 0; i < queue->size; ++i) {
+        for (int j = 0; j < summary_size; ++j) {
+            if (strcmp(summary[i].username, process->username) != 0) {
+                strcpy(summary[i].username, process->username);
+                summary[i].last_time = 0;
+                break;
+            }
+        }
+        process = process->prev_elem;
+    }
 
-	//Take note of all usernames at the start, and then create an array of summary
+    int quantum = QUANTUM;
-	//When a job finishes, take note of its username, and then go through the array of summary and find the username
+    int done = 0;
-	//Once you find the username, assign the last_time to the current time.
-	//TODO: May need to change as the summary should be sorted by username arrival time
 
-	//Go through list and check for arrival times at current time
+    while (true) {
-	//If arrival time is at current time, add to sim_queue
+        process = queue->end;
-	//If there is nothing in sim_queue, print -
+        for (int i = 0; i < queue->size; i++) {
-	//If there is something in sim queue, store the process in a variable, so we can check the quantum
+            if (process->arrival_time == time) {
-	//If the quantum is 0, then we need to dequeue the process and enqueue it again
+                Process *copy = createProcess(process->username, process->job, process->arrival_time, process->duration);
-	//If the quantum is not 0, then we need to print the process and decrement the quantum
+                enqueue(sim_queue, copy);
-	//If the process is done, then we need to print the process and dequeue it
+                done++;
-	//If the process is not done, then we need to print it and leave the queue alone
+            }
-	//Once we reach the point where time is greater than the last arrival time, we need to check if sim_queue is empty
+            process = process->prev_elem;
-	//Once sim_queue is empty, we need to break out of the loop
+        }
+        process = sim_queue->end;
+        if (sim_queue->size == 0) { //If there is nothing in sim_queue, print -
+            printf("%d\t-\n", time);
+            if (done == queue->size) {
+                break;
+            }
+        } else {
+            printf("%d\t%c\n", time, process->job);
+            process->duration--;
+            quantum--;
+            if (process->duration == 0) { // If the process is done, remove it
+                Process *temp = dequeue(sim_queue);
 
+                for (int i = 0; i < summary_size; ++i) {
+                    if (strcmp(summary[i].username, temp->username) == 0) {
+                        summary[i].last_time = time;
+                        how_many++;
+                        break;
+                    }
+                }
 
+                destroyProcess(temp);
+                quantum = QUANTUM;
+            } else if (quantum == 0) { // If the quantum is 0, then we need to dequeue the process and enqueue it again
+                process = dequeue(sim_queue);
+                enqueue(sim_queue, process);
+                quantum = QUANTUM;
+            }
+        }
+        time++;
+    }
+
+    printf("\nSummary\n");
+    for (int i = 0; i < how_many; i++) {
+        if (summary[i].last_time != 0) {
+            printf("%s\t%d\n", summary[i].username, summary[i].last_time);
+        }
+    }
 }
 
 int main() {
-	Queue* input = input_queue();
+    simulation(input_queue());
 }