Update Task

mentos/src/process/feedbackScheduler.c

@@ -3,22 +3,36 @@
 /// @copyright (c) 2014-2022 This file is distributed under the MIT License.
 /// See LICENSE.md for details.
 
+/*
+HOW TO:
+all'avvio di MentOS, usa comando start, verrai avvisato su terminale quando la sessione sarà terminata.
+Puoi verificare i risultati a video lanciando il comando cat sul file del desktop (feedback.txt)
+
+es:
+~  start
+~  cat feedback.txt
+
+Questa e' una versione di prova in cui registriamo una brevissima sessione di soli 10 pid.
+(Funzionante per ora solo con lo scheduler RR)
+Istruzioni relative ai parametri della funzione start (che sono work in progress) sono in start.c
+*/
+
 #include "fcntl.h"
 #include "stdio.h"
 #include "fs/vfs.h"
+#include "string.h"
+
+
+// Size of the buffer.
+#define BUFFER_SIZE 256
+
+#define MAX_SIZE_NAME 20
 
 //Variabili Globali
-// Size of the buffer.
-//#define BUFFER_SIZE 256
-#define MAX_STORAGE 50
+#define MAX_STORAGE 10
 int count = 0;
-
-int flag = 0;
-int count2 = 0;
-pid_t salvati[10] = {0};
-int i = 0;
-
-
+pid_t PID_BUFFER[MAX_STORAGE] = {0};
+char PID_NAME[MAX_STORAGE][MAX_SIZE_NAME];
 
 int countChar(char[]);
 
@@ -38,86 +52,75 @@ void writeFeedback(pid_t pid, char name[])
     char start[] = "start";
 
     //analizzo se nome del PID passato come argomento corrisponde al comando START
-    for(int j = 0 ; j < countChar(name) && brake == 0; j++)
+    for(int i = 0 ; i < countChar(name) && brake == 0; i++)
     {
-        if(start[j] != name[j])
+        if(start[i] != name[i])
         {
             brake = 1;
         }
     }
 
-    //Entra solo una volta, ovvero la prima volta che viene dato start
-    if(brake == 0 && count == MAX_STORAGE)
+    //Entra solo una volta, dopo aver finito la sessione (riempito il buffer)
+    if(brake == 0 && count == MAX_STORAGE-1)
     {
         //RESET BUFFER
+        for(int i = 0; i < MAX_STORAGE; i++)
+        {
+            PID_BUFFER[i] = 0;
+        }
+        count = 0;
+
     }
 
     //Se prima volta e' start bene, proseguiamo siccome brake e' zero, 
     //le successive brake NON zero ma count > 0 poiche start passato in precedenza
     //Opportuno controllo per non sforare il MAX_STORAGE della struttura dati che utilizziamo
-    if(count != MAX_STORAGE && (count != 0 || brake == 0 ))
+    if(count != MAX_STORAGE-1 && (count != 0 || brake == 0 ))
     {
         //REGISTRAZIONE PID IN BUFFER
+        PID_BUFFER[count] = pid;
+        strcpy(PID_NAME[count],name);
+        count++;
     }
 
     //QUI SE BUFFER PIENO SCRIVO SU FILE
-    //QUI SOTTO PROBABILMENTE QUASI TUTTO DA CANCELLARE
 
-    if(pid != 1 && pid != 2)
+    if(count == MAX_STORAGE-1)
     {
-        flag = 1;
-    }
-    else if(i<10)
-    {
-        salvati[i] = pid;
-        i++;
+        mode_t mode = 000777;
+        char buffer[BUFFER_SIZE];
+        const char *namef = "/home/user/feedback.txt";
+        ssize_t offset = sizeof(char)*38;
+        char temp[6]; //max PID 99999
+
+        // NOTE: You should check if the file exists, or create it, during the boot
+        // phase of the system. Choose a place where to put it, a location like
+        // `/var/scheduling_feedback.txt`.
+        vfs_file_t *file = vfs_open(namef, O_RDWR, mode);
+
+        if (file == NULL) {
+            printf("Error: Failed to open feedback file.");
+        }
+
+        for(int i=0; i < MAX_STORAGE; i++)
+        { 
+            itoa(temp,PID_BUFFER[i],10);
+            offset += vfs_write(file, temp, offset, sizeof(char)*countChar(temp));
+            offset += vfs_write(file, "   ", offset, sizeof(char)*3);
+            offset += vfs_write(file, PID_NAME[i], offset, sizeof(char)*countChar(PID_NAME[i]));
+            offset += vfs_write(file, "\n", offset, sizeof(char));
+            //ripristino array temp
+            for(int j=0; j < 5; j++)
+            {
+                temp[j] = 0;
+            }
+
+        }
+        printf("End Recording\n");
+        vfs_close(file); 
+        count = 0;
     }
     
-
-    if(count2%10 == 0)
-    {
-        if(flag == 1 && pid != 1 && pid != 2)
-        {
-            //printf("%s con %d caratteri\n",name,countChar(name));
-            //printf("%s\n",start);
-        //printf("%i\n",pid);
-        //printf("Ho stampato: %s\n", name);
-        }
-    }
-    count2++;
-
-
-    //ROBA PER LAVORARE SUI FILE
-    /*     
-    mode_t mode = 000777;
-    char buffer[BUFFER_SIZE];
-    const char *name = "/home/user/feedback.txt";
-
-    // NOTE: You should check if the file exists, or create it, during the boot
-    // phase of the system. Choose a place where to put it, a location like
-    // `/var/scheduling_feedback.txt`.
-    vfs_file_t *file = vfs_open(name, O_RDWR, mode);
-
-    if (file == NULL) {
-        printf("Error: Failed to open feedback file.");
-        return 0;
-    }
-
-    // NOTE: You need also to save the offset where you are reading or writing
-    // the file. You are not using the simplified read() or write(), this one is
-    // a kernel-side function.
-    ssize_t offset = 0;
-    buffer[0] = 'P';
-    buffer[1] = 'i';
-    buffer[2] = 'd';
-    buffer[3] = '\0';
-    vfs_write(file, buffer, offset, 2);
-
-    //write to file
-    //vfs_write(file,"ciao",4);
-    vfs_close(file); 
-    }
-    */
 }