git.m6w6.name Git - awesomized/libmemcached/blob - src/generator.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4
   5 #include "generator.h"
   6
   7 /* Use this for string generation */
   8 static const char ALPHANUMERICS[]=
   9   "0123456789ABCDEFGHIJKLMNOPQRSTWXYZabcdefghijklmnopqrstuvwxyz";
  10
  11 #define ALPHANUMERICS_SIZE (sizeof(ALPHANUMERICS)-1)
  12
  13 static void get_random_string(char *buffer, size_t size)
  14 {
  15   char *buffer_ptr= buffer;
  16
  17   while (--size)
  18     *buffer_ptr++= ALPHANUMERICS[random() % ALPHANUMERICS_SIZE];
  19   *buffer_ptr++= ALPHANUMERICS[random() % ALPHANUMERICS_SIZE];
  20 }
  21
  22 void pairs_free(pairs_st *pairs)
  23 {
  24   unsigned int x;
  25
  26   if (!pairs)
  27     return;
  28
  29   /* We free until we hit the null pair we stores during creation */
  30   for (x= 0; pairs[x].key; x++)
  31   {
  32     free(pairs[x].key);
  33     free(pairs[x].value);
  34   }
  35
  36   free(pairs);
  37 }
  38
  39 pairs_st *pairs_generate(unsigned long long number_of, size_t value_length)
  40 {
  41   unsigned int x;
  42   pairs_st *pairs;
  43
  44   pairs= (pairs_st*)malloc(sizeof(pairs_st) * (number_of+1));
  45
  46   if (!pairs)
  47     goto error;
  48
  49   memset(pairs, 0, sizeof(pairs_st) * (number_of+1));
  50
  51   for (x= 0; x < number_of; x++)
  52   {
  53     pairs[x].key= (char *)malloc(sizeof(char) * 100);
  54     if (!pairs[x].key)
  55       goto error;
  56     get_random_string(pairs[x].key, 100);
  57     pairs[x].key_length= 100;
  58
  59     pairs[x].value= (char *)malloc(sizeof(char) * value_length);
  60     if (!pairs[x].value)
  61       goto error;
  62     get_random_string(pairs[x].value, value_length);
  63     pairs[x].value_length= value_length;
  64   }
  65
  66   return pairs;
  67 error:
  68     fprintf(stderr, "Memory Allocation failure in pairs_generate.\n");
  69     exit(0);
  70 }