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