git.m6w6.name Git - m6w6/libmemcached/blob - clients/generator.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <stdint.h>
   4 #include <string.h>
   5
   6 #include "generator.h"
   7
   8 /* Use this for string generation */
   9 static const char ALPHANUMERICS[]=
  10   "0123456789ABCDEFGHIJKLMNOPQRSTWXYZabcdefghijklmnopqrstuvwxyz";
  11
  12 #define ALPHANUMERICS_SIZE (sizeof(ALPHANUMERICS)-1)
  13
  14 static void get_random_string(char *buffer, size_t size)
  15 {
  16   char *buffer_ptr= buffer;
  17
  18   while (--size)
  19     *buffer_ptr++= ALPHANUMERICS[random() % ALPHANUMERICS_SIZE];
  20   *buffer_ptr++= ALPHANUMERICS[random() % ALPHANUMERICS_SIZE];
  21 }
  22
  23 void pairs_free(pairs_st *pairs)
  24 {
  25   uint32_t x;
  26
  27   if (!pairs)
  28     return;
  29
  30   /* We free until we hit the null pair we stores during creation */
  31   for (x= 0; pairs[x].key; x++)
  32   {
  33     free(pairs[x].key);
  34     free(pairs[x].value);
  35   }
  36
  37   free(pairs);
  38 }
  39
  40 pairs_st *pairs_generate(uint64_t number_of, size_t value_length)
  41 {
  42   unsigned int x;
  43   pairs_st *pairs;
  44
  45   pairs= (pairs_st*)malloc(sizeof(pairs_st) * (number_of+1));
  46
  47   if (!pairs)
  48     goto error;
  49
  50   memset(pairs, 0, sizeof(pairs_st) * (number_of+1));
  51
  52   for (x= 0; x < number_of; x++)
  53   {
  54     pairs[x].key= (char *)malloc(sizeof(char) * 100);
  55     if (!pairs[x].key)
  56       goto error;
  57     get_random_string(pairs[x].key, 100);
  58     pairs[x].key_length= 100;
  59
  60     pairs[x].value= (char *)malloc(sizeof(char) * value_length);
  61     if (!pairs[x].value)
  62       goto error;
  63     get_random_string(pairs[x].value, value_length);
  64     pairs[x].value_length= value_length;
  65   }
  66
  67   return pairs;
  68 error:
  69     fprintf(stderr, "Memory Allocation failure in pairs_generate.\n");
  70     exit(0);
  71 }