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

   1 /* LibMemcached
   2  * Copyright (C) 2006-2009 Brian Aker
   3  * All rights reserved.
   4  *
   5  * Use and distribution licensed under the BSD license.  See
   6  * the COPYING file in the parent directory for full text.
   7  *
   8  * Summary:
   9  *
  10  */
  11
  12 #include <config.h>
  13
  14 #include <stdint.h>
  15
  16 #include <cstdio>
  17 #include <cstdlib>
  18 #include <cstring>
  19 #include <iostream>
  20 #include <unistd.h>
  21
  22 #include "generator.h"
  23
  24 /* Use this for string generation */
  25 static const char ALPHANUMERICS[]=
  26   "0123456789ABCDEFGHIJKLMNOPQRSTWXYZabcdefghijklmnopqrstuvwxyz";
  27
  28 #define ALPHANUMERICS_SIZE (sizeof(ALPHANUMERICS)-1)
  29
  30 static size_t get_alpha_num(void)
  31 {
  32   return (size_t)random() % ALPHANUMERICS_SIZE;
  33 }
  34
  35 static void get_random_string(char *buffer, size_t size)
  36 {
  37   char *buffer_ptr= buffer;
  38
  39   while (--size)
  40     *buffer_ptr++= ALPHANUMERICS[get_alpha_num()];
  41   *buffer_ptr++= ALPHANUMERICS[get_alpha_num()];
  42 }
  43
  44 void pairs_free(pairs_st *pairs)
  45 {
  46   if (pairs == NULL)
  47   {
  48     return;
  49   }
  50
  51   /* We free until we hit the null pair we stores during creation */
  52   for (uint32_t x= 0; pairs[x].key; x++)
  53   {
  54     free(pairs[x].key);
  55     if (pairs[x].value)
  56       free(pairs[x].value);
  57   }
  58
  59   free(pairs);
  60 }
  61
  62 pairs_st *pairs_generate(uint64_t number_of, size_t value_length)
  63 {
  64   pairs_st *pairs= (pairs_st*)calloc((size_t)number_of + 1, sizeof(pairs_st));
  65
  66   if (pairs == NULL)
  67   {
  68     goto error;
  69   }
  70
  71   for (uint64_t x= 0; x < number_of; x++)
  72   {
  73     pairs[x].key= (char *)calloc(100, sizeof(char));
  74
  75     if (pairs[x].key == NULL)
  76       goto error;
  77
  78     get_random_string(pairs[x].key, 100);
  79     pairs[x].key_length= 100;
  80
  81     if (value_length)
  82     {
  83       pairs[x].value= (char *)calloc(value_length, sizeof(char));
  84
  85       if (pairs[x].value == NULL)
  86         goto error;
  87
  88       get_random_string(pairs[x].value, value_length);
  89       pairs[x].value_length= value_length;
  90     }
  91     else
  92     {
  93       pairs[x].value= NULL;
  94       pairs[x].value_length= 0;
  95     }
  96   }
  97
  98   return pairs;
  99 error:
 100   std::cerr << "Memory Allocation failure in pairs_generate." << std::endl;
 101   exit(EXIT_SUCCESS);
 102 }