System calls commented

foo.c

@@ -1,43 +1,13 @@
+// TEST FILE, WHICH CREATES A CHILD AND A PARENT PROCESS
+// BOTH PARENT AND THE CHILD HAVE CPU INTENSIVE JOBS 
+// THE PARENT WAIT FOR THE CHILD TO FINISH BEFORE COMPLETING ITS EXECUTION
+
 #include "types.h"
 #include "stat.h"
 #include "user.h"
 #include "fcntl.h"
-int
-main(int argc, char *argv[]){
-    // int k, n, id; 
-    // double x = 0, z, d;
-    // if (argc<2)
-    //     n = 1;
-    // else
-    //     n = atoi(argv[1]);
 
-    // if (n<0||n>20)
-    //     n = 2;
-    // if (argc<3)
-    //     d = 1.0;
-    // else
-    //     d = atoi(argv[2]);
-
-    // x = 0;
-    // id = 0;
-    // for (k=0;k<n;k++){
-    //     id = fork();
-    //     if (id<0){
-    //         printf(1,"%d failed in fork!\n",getpid());
-    //     } 
-    //     else if (id>0){
-    //         wait();
-    //         printf(1, "%d Creating Child %d\n",getpid(),id);
-
-    //     }
-    //     else{
-    //         printf(1, "Child %d created\n", getpid());
-    //         for (z = 0; z<8000000; z+=d ){
-    //             x = x + 3.14*89.64;
-    //             break;
-    //         }
-    //     }
-    // }
+int main(int argc, char *argv[]){
     int id = 0; 
     double x = 1;
     id = fork();
@@ -49,15 +19,12 @@ main(int argc, char *argv[]){
             x = x+0.000000005;
         }
         wait();
-        // printf(1, "%d Creating Child %d\n",getpid(),id);
 
     }
     else{
-        // printf(1, "Child %d created\n", getpid());
         while(x<1.2){
             x = x+0.000000005;
         } 
-
-        }
+    }
     exit();
 }

syscall.c

@@ -104,7 +104,10 @@ extern int sys_wait(void);
 extern int sys_write(void);
 extern int sys_uptime(void);
 extern int sys_cps(void);
+
+/*MLFQ MODIFICATION*/
 extern int sys_getpinfo(void);
+/*------- END -------*/
 
 static int (*syscalls[])(void) = {
 [SYS_fork]    sys_fork,
@@ -129,10 +132,13 @@ static int (*syscalls[])(void) = {
 [SYS_mkdir]   sys_mkdir,
 [SYS_close]   sys_close,
 [SYS_cps]     sys_cps,
-[SYS_getpinfo] sys_getpinfo,
 
+/*MLFQ MODIFICATION*/
+[SYS_getpinfo] sys_getpinfo,
+/*------- END -------*/
 };
 
+/*MLFQ MODIFICATION*/
 void
 syscall(void)
 {
@@ -148,3 +154,4 @@ syscall(void)
     curproc->tf->eax = -1;
   }
 }
+/*------- END -------*/

syscall.h

@@ -21,4 +21,6 @@
 #define SYS_mkdir  20
 #define SYS_close  21
 #define SYS_cps    22
-#define SYS_getpinfo 23
+/*MLFQ MODIFICATION*/
+#define SYS_getpinfo 23
+/*------- END -------*/

user.h

@@ -26,7 +26,10 @@ char* sbrk(int);
 int sleep(int);
 int uptime(void);
 int cps(void);
+
+/*MLFQ MODIFICATION*/
 int getpinfo(struct pstat*);
+/*------- END -------*/
 
 // ulib.c
 int stat(const char*, struct stat*);