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Ex10/Record.odt

@@ -0,0 +1,95 @@
+
+Script started on 2019-03-07 08:48:35+0530
+#]0;ramkaushik@ram-kaushik: ~/Documents/College/OS-Lab/Ex10##[01;32mramkaushik@ram-kaushik#[00m:#[01;34m~/Documents/College/OS-Lab/Ex10#[00m$ cat sample.c
+#include<pthread.h> 
+#include<stdio.h>
+#include<string.h>
+#include<stdlib.h>
+int sum;
+void *runner(void *param);
+int main(int argc, char *argv[]) { 
+  pthread_t tid;
+  pthread_attr_t attr;
+  if (argc != 2){
+    fprintf(stderr,"usage: sample <integer value>\n");
+    return -1;
+  }
+  if (atoi(argv[1]) < 0){
+    fprintf(stderr,"%d must be >= 0 \n",atoi(argv[1]));
+    return -1;
+  }
+  pthread_attr_init(&attr);
+  pthread_create(&tid,&attr,runner,argv[1]);
+  pthread_join(tid,NULL);
+  printf("sum = %d\n",sum);
+} 
+void *runner(void *param) { 
+  int i, upper = atoi(param);
+  sum = 0;
+  for (i = 1; i <= upper; i++)
+    sum += i; 
+  pthread_exit(0); 
+}
+#]0;ramkaushik@ram-kaushik: ~/Documents/College/OS-Lab/Ex10##[01;32mramkaushik@ram-kaushik#[00m:#[01;34m~/Documents/College/OS-Lab/Ex10#[00m$ ./sample 5
+sum = 15
+#]0;ramkaushik@ram-kaushik: ~/Documents/College/OS-Lab/Ex10##[01;32mramkaushik@ram-kaushik#[00m:#[01;34m~/Documents/College/OS-Lab/Ex10#[00m$ cat minmaxavg.c
+#include<pthread.h> 
+#include<stdio.h>
+#include<string.h>
+#include<stdlib.h>
+int max, min, l;
+float avg;
+int list[10];
+void *Max(void *param);
+void *Min(void *param);
+void *Avg(void *param);
+int main(int argc, char *argv[]) { 
+  pthread_t tid1, tid2, tid3;
+  pthread_attr_t attr1, attr2, attr3;
+  if (argc < 2) { 
+    fprintf(stderr,"Usage: Enter list of integer values\n"); 
+    return -1; 
+  }
+  for(int i = 1; i < argc; i++)
+    list[i-1] = atoi(argv[i]);
+  l = argc - 1;
+  pthread_attr_init(&attr1);
+  pthread_attr_init(&attr2);
+
+
+  pthread_attr_init(&attr3); 
+  pthread_create(&tid1,&attr1,Max, list);
+  pthread_create(&tid2,&attr2,Min, list);
+  pthread_create(&tid3,&attr3,Avg, list);
+  pthread_join(tid1,NULL);
+  pthread_join(tid2,NULL);
+  pthread_join(tid3,NULL); 
+  printf("Max, Min, Avg: %d, %d, %f\n",max,min,avg);
+} 
+void *Max(void *param){ 
+  max = list[0];
+  for(int i = 1; i < l; i++)
+    if(max < list[i])
+      max = list[i];
+  pthread_exit(0);
+}
+void *Min(void *param){ 
+  min = list[0];
+  for(int i = 1; i < l; i++)
+    if(min > list[i])
+      min = list[i];
+  pthread_exit(0);
+} 
+void *Avg(void *param){
+  avg = 0;
+  for(int i = 0; i < l; i++)
+    avg += list[i];
+  avg /= l;
+  pthread_exit(0); 
+} 
+#]0;ramkaushik@ram-kaushik: ~/Documents/College/OS-Lab/Ex10##[01;32mramkaushik@ram-kaushik#[00m:#[01;34m~/Documents/College/OS-Lab/Ex10#[00m$ ./minmaxavg 10 30 40 20
+Max, Min, Avg: 40, 10, 25.000000
+#]0;ramkaushik@ram-kaushik: ~/Documents/College/OS-Lab/Ex10##[01;32mramkaushik@ram-kaushik#[00m:#[01;34m~/Documents/College/OS-Lab/Ex10#[00m$ exit
+exit
+
+Script done on 2019-03-07 08:49:16+0530

Ex10/minmaxavg.c

@@ -0,0 +1,52 @@
+#include<pthread.h> 
+#include<stdio.h>
+#include<string.h>
+#include<stdlib.h>
+int max, min, l;
+float avg;
+int list[10];
+void *Max(void *param);
+void *Min(void *param);
+void *Avg(void *param);
+int main(int argc, char *argv[]) { 
+  pthread_t tid1, tid2, tid3;
+  pthread_attr_t attr1, attr2, attr3;
+  if (argc < 2) { 
+    fprintf(stderr,"Usage: Enter list of integer values\n"); 
+    return -1; 
+  }
+  for(int i = 1; i < argc; i++)
+    list[i-1] = atoi(argv[i]);
+  l = argc - 1;
+  pthread_attr_init(&attr1);
+  pthread_attr_init(&attr2);
+  pthread_attr_init(&attr3); 
+  pthread_create(&tid1,&attr1,Max, list);
+  pthread_create(&tid2,&attr2,Min, list);
+  pthread_create(&tid3,&attr3,Avg, list);
+  pthread_join(tid1,NULL);
+  pthread_join(tid2,NULL);
+  pthread_join(tid3,NULL); 
+  printf("Max, Min, Avg: %d, %d, %f\n",max,min,avg);
+} 
+void *Max(void *param){ 
+  max = list[0];
+  for(int i = 1; i < l; i++)
+    if(max < list[i])
+      max = list[i];
+  pthread_exit(0);
+}
+void *Min(void *param){ 
+  min = list[0];
+  for(int i = 1; i < l; i++)
+    if(min > list[i])
+      min = list[i];
+  pthread_exit(0);
+} 
+void *Avg(void *param){
+  avg = 0;
+  for(int i = 0; i < l; i++)
+    avg += list[i];
+  avg /= l;
+  pthread_exit(0); 
+} 

Ex10/sample.c

@@ -0,0 +1,29 @@
+#include<pthread.h> 
+#include<stdio.h>
+#include<string.h>
+#include<stdlib.h>
+int sum;
+void *runner(void *param);
+int main(int argc, char *argv[]) { 
+  pthread_t tid;
+  pthread_attr_t attr;
+  if (argc != 2){
+    fprintf(stderr,"usage: sample <integer value>\n");
+    return -1;
+  }
+  if (atoi(argv[1]) < 0){
+    fprintf(stderr,"%d must be >= 0 \n",atoi(argv[1]));
+    return -1;
+  }
+  pthread_attr_init(&attr);
+  pthread_create(&tid,&attr,runner,argv[1]);
+  pthread_join(tid,NULL);
+  printf("sum = %d\n",sum);
+} 
+void *runner(void *param) { 
+  int i, upper = atoi(param);
+  sum = 0;
+  for (i = 1; i <= upper; i++)
+    sum += i; 
+  pthread_exit(0); 
+}