git.m6w6.name Git - awesomized/libmemcached/blob - clients/utilities.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 #include <config.h>
  12
  13 #include <clients/utilities.h>
  14
  15 #include <cstdio>
  16 #include <cassert>
  17 #include <cstdlib>
  18 #include <cstring>
  19 #include <ctype.h>
  20 #include <fcntl.h>
  21 #include <sys/stat.h>
  22 #include <sys/types.h>
  23 #include <unistd.h>
  24
  25
  26 long int timedif(struct timeval a, struct timeval b)
  27 {
  28   long us, s;
  29
  30   us = (int)(a.tv_usec - b.tv_usec);
  31   us /= 1000;
  32   s = (int)(a.tv_sec - b.tv_sec);
  33   s *= 1000;
  34   return s + us;
  35 }
  36
  37 void version_command(const char *command_name)
  38 {
  39   printf("%s v%u.%u\n", command_name, 1U, 0U);
  40   exit(EXIT_SUCCESS);
  41 }
  42
  43 void close_stdio(void)
  44 {
  45   int fd;
  46   if ((fd = open("/dev/null", O_RDWR, 0)) < 0)
  47   {
  48     return;
  49   }
  50   else
  51   {
  52     if (dup2(fd, STDIN_FILENO) < 0)
  53     {
  54       return;
  55     }
  56
  57     if (dup2(fd, STDOUT_FILENO) < 0)
  58     {
  59       return;
  60     }
  61
  62     if (dup2(fd, STDERR_FILENO) < 0)
  63     {
  64       return;
  65     }
  66
  67     if (fd > STDERR_FILENO)
  68     {
  69       close(fd);
  70     }
  71   }
  72 }
  73
  74
  75 static const char *lookup_help(memcached_options option)
  76 {
  77   switch (option)
  78   {
  79   case OPT_SERVERS: return("List which servers you wish to connect to.");
  80   case OPT_VERSION: return("Display the version of the application and then exit.");
  81   case OPT_HELP: return("Display this message and then exit.");
  82   case OPT_VERBOSE: return("Give more details on the progression of the application.");
  83   case OPT_QUIET: return("stderr and stdin will be closed at application startup.");
  84   case OPT_DEBUG: return("Provide output only useful for debugging.");
  85   case OPT_FLAG: return("Provide flag information for storage operation.");
  86   case OPT_EXPIRE: return("Set the expire option for the object.");
  87   case OPT_SET: return("Use set command with memcached when storing.");
  88   case OPT_REPLACE: return("Use replace command with memcached when storing.");
  89   case OPT_ADD: return("Use add command with memcached when storing.");
  90   case OPT_SLAP_EXECUTE_NUMBER: return("Number of times to execute the given test.");
  91   case OPT_SLAP_INITIAL_LOAD: return("Number of key pairs to load before executing tests.");
  92   case OPT_SLAP_TEST: return("Test to run (currently \"get\" or \"set\").");
  93   case OPT_SLAP_CONCURRENCY: return("Number of users to simulate with load.");
  94   case OPT_SLAP_NON_BLOCK: return("Set TCP up to use non-blocking IO.");
  95   case OPT_SLAP_TCP_NODELAY: return("Set TCP socket up to use nodelay.");
  96   case OPT_FLUSH: return("Flush servers before running tests.");
  97   case OPT_HASH: return("Select hash type.");
  98   case OPT_BINARY: return("Switch to binary protocol.");
  99   case OPT_ANALYZE: return("Analyze the provided servers.");
 100   case OPT_UDP: return("Use UDP protocol when communicating with server.");
 101   case OPT_BUFFER: return("Enable request buffering.");
 102   case OPT_USERNAME: return "Username to use for SASL authentication";
 103   case OPT_PASSWD: return "Password to use for SASL authentication";
 104   case OPT_FILE: return "Path to file in which to save result";
 105   case OPT_STAT_ARGS: return "Argument for statistics";
 106   default:
 107                       break;
 108   };
 109
 110   assert(0);
 111   return "forgot to document this function :)";
 112 }
 113
 114 void help_command(const char *command_name, const char *description,
 115                   const struct option *long_options,
 116                   memcached_programs_help_st *options)
 117 {
 118   unsigned int x;
 119   (void)options;
 120
 121   printf("%s v%u.%u\n\n", command_name, 1U, 0U);
 122   printf("\t%s\n\n", description);
 123   printf("Current options. A '=' means the option takes a value.\n\n");
 124
 125   for (x= 0; long_options[x].name; x++)
 126   {
 127     const char *help_message;
 128
 129     printf("\t --%s%c\n", long_options[x].name,
 130            long_options[x].has_arg ? '=' : ' ');
 131     if ((help_message= lookup_help(memcached_options(long_options[x].val))))
 132       printf("\t\t%s\n", help_message);
 133   }
 134
 135   printf("\n");
 136   exit(EXIT_SUCCESS);
 137 }
 138
 139 void process_hash_option(memcached_st *memc, char *opt_hash)
 140 {
 141   uint64_t set;
 142   memcached_return_t rc;
 143
 144   if (opt_hash == NULL)
 145     return;
 146
 147   set= MEMCACHED_HASH_DEFAULT; /* Just here to solve warning */
 148   if (!strcasecmp(opt_hash, "CRC"))
 149   {
 150     set= MEMCACHED_HASH_CRC;
 151   }
 152   else if (!strcasecmp(opt_hash, "FNV1_64"))
 153   {
 154     set= MEMCACHED_HASH_FNV1_64;
 155   }
 156   else if (!strcasecmp(opt_hash, "FNV1A_64"))
 157   {
 158     set= MEMCACHED_HASH_FNV1A_64;
 159   }
 160   else if (!strcasecmp(opt_hash, "FNV1_32"))
 161   {
 162     set= MEMCACHED_HASH_FNV1_32;
 163   }
 164   else if (!strcasecmp(opt_hash, "FNV1A_32"))
 165   {
 166     set= MEMCACHED_HASH_FNV1A_32;
 167   }
 168   else
 169   {
 170     fprintf(stderr, "hash: type not recognized %s\n", opt_hash);
 171     exit(EXIT_FAILURE);
 172   }
 173
 174   rc= memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_HASH, set);
 175   if (rc != MEMCACHED_SUCCESS)
 176   {
 177     fprintf(stderr, "hash: memcache error %s\n", memcached_strerror(memc, rc));
 178     exit(EXIT_FAILURE);
 179   }
 180 }
 181
 182 void initialize_sockets(void)
 183 {
 184   /* Define the function for all platforms to avoid #ifdefs in each program */
 185 #if defined(WIN32) && WIN32
 186   WSADATA wsaData;
 187   if (WSAStartup(MAKEWORD(2,0), &wsaData) != 0)
 188   {
 189     fprintf(stderr, "Socket Initialization Error. Program aborted\n");
 190     exit(EXIT_FAILURE);
 191   }
 192 #endif
 193 }