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

   1 /* LibMemcached
   2  * Copyright (C) 2011-2012 Data Differential, http://datadifferential.com/
   3  * Copyright (C) 2006-2009 Brian Aker
   4  * All rights reserved.
   5  *
   6  * Use and distribution licensed under the BSD license.  See
   7  * the COPYING file in the parent directory for full text.
   8  *
   9  * Summary:
  10  *
  11  */
  12
  13 #include <mem_config.h>
  14
  15 #include <stdint.h>
  16
  17 #include <cstdio>
  18 #include <cstdlib>
  19 #include <cstring>
  20 #include <iostream>
  21 #include <unistd.h>
  22
  23 #include "clients/generator.h"
  24
  25 /* Use this for string generation */
  26 static const char ALPHANUMERICS[]=
  27   "0123456789ABCDEFGHIJKLMNOPQRSTWXYZabcdefghijklmnopqrstuvwxyz";
  28
  29 #define ALPHANUMERICS_SIZE (sizeof(ALPHANUMERICS)-1)
  30
  31 static size_t get_alpha_num(void)
  32 {
  33   return (size_t)random() % ALPHANUMERICS_SIZE;
  34 }
  35
  36 void get_random_string(char *buffer, size_t size)
  37 {
  38   char *buffer_ptr= buffer;
  39
  40   while (--size)
  41   {
  42     *buffer_ptr++= ALPHANUMERICS[get_alpha_num()];
  43   }
  44   *buffer_ptr++= ALPHANUMERICS[get_alpha_num()];
  45 }
  46
  47 void pairs_free(pairs_st *pairs)
  48 {
  49   if (pairs == NULL)
  50   {
  51     return;
  52   }
  53
  54   /* We free until we hit the null pair we stores during creation */
  55   for (uint32_t x= 0; pairs[x].key; x++)
  56   {
  57     free(pairs[x].key);
  58     if (pairs[x].value)
  59     {
  60       free(pairs[x].value);
  61     }
  62   }
  63
  64   free(pairs);
  65 }
  66
  67 pairs_st *pairs_generate(uint64_t number_of, size_t value_length)
  68 {
  69   pairs_st *pairs= (pairs_st*)calloc((size_t)number_of + 1, sizeof(pairs_st));
  70
  71   if (pairs == NULL)
  72   {
  73     goto error;
  74   }
  75
  76   for (uint64_t x= 0; x < number_of; x++)
  77   {
  78     pairs[x].key= (char *)calloc(100, sizeof(char));
  79
  80     if (pairs[x].key == NULL)
  81       goto error;
  82
  83     get_random_string(pairs[x].key, 100);
  84     pairs[x].key_length= 100;
  85
  86     if (value_length)
  87     {
  88       pairs[x].value= (char *)calloc(value_length, sizeof(char));
  89
  90       if (pairs[x].value == NULL)
  91         goto error;
  92
  93       get_random_string(pairs[x].value, value_length);
  94       pairs[x].value_length= value_length;
  95     }
  96     else
  97     {
  98       pairs[x].value= NULL;
  99       pairs[x].value_length= 0;
 100     }
 101   }
 102
 103   return pairs;
 104 error:
 105   std::cerr << "Memory Allocation failure in pairs_generate." << std::endl;
 106   exit(EXIT_SUCCESS);
 107 }