speed_test/global.c

   1 #include <stdlib.h>
   2 #include <stdio.h>
   3 #include <xlocale.h>
   4 #include <stdarg.h>
   5 #include <unistd.h>
   6 #include <string.h>
   7 struct list {
   8     void* columns;
   9     int   numColumns;
  10 };
  11 struct hash {
  12     char value[40];
  13 };
  14
  15 int main() {
  16     srandomdev();
  17
  18     int i = 0; struct list* last;
  19     int num = atoi("8000000");
  20
  21     int size = 1000;
  22     int totColumns = 10000;
  23     int currentColumn = 0;
  24
  25     /* Initialize initial list of revisions */
  26     struct list* revisionList = malloc(size * sizeof(struct list));
  27     struct hash* columns = malloc(totColumns * sizeof(struct hash));
  28
  29     struct hash standardColumn;
  30     strcpy(standardColumn.value, "Haha pieter");
  31     for (i = 0; i < num; i++) {
  32         if (size <= i) {
  33             size *= 2;
  34             revisionList = realloc(revisionList, size * sizeof(struct list));
  35         }
  36
  37         struct list* a = revisionList + i;
  38         a->numColumns = i % 5;
  39         if (currentColumn + a->numColumns > totColumns) {
  40             totColumns *= 2;
  41             printf("Reallocing columns. New total: %i\n", totColumns);
  42             columns = realloc(columns, totColumns * sizeof(struct hash));
  43         }
  44         int j;
  45         for (j = 0; j < a->numColumns; j++) {
  46             //ccolumns[currentColumn++] = st
  47             strncpy(columns[currentColumn++].value, "Haha pieter is cool", 20);
  48         }
  49     }
  50
  51     printf("Num value at 3000 is: %i vs %i\n", revisionList[3000].numColumns, (int) (5 * random()));
  52     printf("Value of 1000'd column is: %s\n", columns[1000].value);
  53     sleep(5);
  54     return 0;
  55 }