/* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Libmemcached library
*
* Copyright (C) 2011-2012 Data Differential, http://datadifferential.com/
* Copyright (C) 2006-2009 Brian Aker All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* * The names of its contributors may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <mem_config.h>
#include <cassert>
#include <cerrno>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <fcntl.h>
#include <getopt.h>
#include <memory>
#include <pthread.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <iostream>
#include <libmemcached-1.0/memcached.h>
#include "client_options.h"
#include "utilities.h"
#include "generator.h"
#include "execute.h"
#define DEFAULT_INITIAL_LOAD 10000
#define DEFAULT_EXECUTE_NUMBER 10000
#define DEFAULT_CONCURRENCY 1
#define VALUE_BYTES 4096
#define PROGRAM_NAME "memslap"
#define PROGRAM_DESCRIPTION "Generates a load against a memcached custer of servers."
/* Global Thread counter */
volatile unsigned int master_wakeup;
pthread_mutex_t sleeper_mutex;
pthread_cond_t sleep_threshhold;
/* Types */
enum test_t {
SET_TEST,
GET_TEST,
MGET_TEST
};
struct thread_context_st {
unsigned int key_count;
pairs_st *initial_pairs;
unsigned int initial_number;
pairs_st *execute_pairs;
unsigned int execute_number;
char **keys;
size_t *key_lengths;
test_t test;
memcached_st *memc;
const memcached_st* root;
thread_context_st(const memcached_st* memc_arg, test_t test_arg) :
key_count(0),
initial_pairs(NULL),
initial_number(0),
execute_pairs(NULL),
execute_number(0),
keys(0),
key_lengths(NULL),
test(test_arg),
memc(NULL),
root(memc_arg)
{
}
void init()
{
memc= memcached_clone(NULL, root);
}
~thread_context_st()
{
if (execute_pairs)
{
pairs_free(execute_pairs);
}
memcached_free(memc);
}
};
struct conclusions_st {
long int load_time;
long int read_time;
unsigned int rows_loaded;
unsigned int rows_read;
conclusions_st() :
load_time(0),
read_time(0),
rows_loaded(0),
rows_read()
{ }
};
/* Prototypes */
void options_parse(int argc, char *argv[]);
void conclusions_print(conclusions_st *conclusion);
void scheduler(memcached_server_st *servers, conclusions_st *conclusion);
pairs_st *load_create_data(memcached_st *memc, unsigned int number_of,
unsigned int *actual_loaded);
void flush_all(memcached_st *memc);
static bool opt_binary= 0;
static int opt_verbose= 0;
static int opt_flush= 0;
static int opt_non_blocking_io= 0;
static int opt_tcp_nodelay= 0;
static unsigned int opt_execute_number= 0;
static unsigned int opt_createial_load= 0;
static unsigned int opt_concurrency= 0;
static int opt_displayflag= 0;
static char *opt_servers= NULL;
static bool opt_udp_io= false;
test_t opt_test= SET_TEST;
extern "C" {
static __attribute__((noreturn)) void *run_task(void *p)
{
thread_context_st *context= (thread_context_st *)p;
context->init();
pthread_mutex_lock(&sleeper_mutex);
while (master_wakeup)
{
pthread_cond_wait(&sleep_threshhold, &sleeper_mutex);
}
pthread_mutex_unlock(&sleeper_mutex);
/* Do Stuff */
switch (context->test)
{
case SET_TEST:
assert(context->execute_pairs);
execute_set(context->memc, context->execute_pairs, context->execute_number);
break;
case GET_TEST:
execute_get(context->memc, context->initial_pairs, context->initial_number);
break;
case MGET_TEST:
execute_mget(context->memc, (const char*const*)context->keys, context->key_lengths, context->initial_number);
break;
}
delete context;
pthread_exit(0);
}
}
int main(int argc, char *argv[])
{
conclusions_st conclusion;
srandom((unsigned int)time(NULL));
options_parse(argc, argv);
if (opt_servers == NULL)
{
char *temp;
if ((temp= getenv("MEMCACHED_SERVERS")))
{
opt_servers= strdup(temp);
}
if (opt_servers == NULL)
{
std::cerr << "No Servers provided" << std::endl;
exit(EXIT_FAILURE);
}
}
memcached_server_st *servers= memcached_servers_parse(opt_servers);
if (servers == NULL or memcached_server_list_count(servers) == 0)
{
std::cerr << "Invalid server list provided:" << opt_servers << std::endl;
return EXIT_FAILURE;
}
pthread_mutex_init(&sleeper_mutex, NULL);
pthread_cond_init(&sleep_threshhold, NULL);
int error_code= EXIT_SUCCESS;
try {
scheduler(servers, &conclusion);
}
catch(std::exception& e)
{
std::cerr << "Died with exception: " << e.what() << std::endl;
error_code= EXIT_FAILURE;
}
free(opt_servers);
(void)pthread_mutex_destroy(&sleeper_mutex);
(void)pthread_cond_destroy(&sleep_threshhold);
conclusions_print(&conclusion);
memcached_server_list_free(servers);
return error_code;
}
void scheduler(memcached_server_st *servers, conclusions_st *conclusion)
{
unsigned int actual_loaded= 0; /* Fix warning */
struct timeval start_time, end_time;
pairs_st *pairs= NULL;
memcached_st *memc= memcached_create(NULL);
memcached_server_push(memc, servers);
/* We need to set udp behavior before adding servers to the client */
if (opt_udp_io)
{
if (memcached_failed(memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_USE_UDP, opt_udp_io)))
{
std::cerr << "Failed to enable UDP." << std::endl;
memcached_free(memc);
exit(EXIT_FAILURE);
}
}
memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_BINARY_PROTOCOL,
(uint64_t)opt_binary);
if (opt_flush)
{
flush_all(memc);
}
if (opt_createial_load)
{
pairs= load_create_data(memc, opt_createial_load, &actual_loaded);
}
char **keys= static_cast<char **>(calloc(actual_loaded, sizeof(char*)));
size_t *key_lengths= static_cast<size_t *>(calloc(actual_loaded, sizeof(size_t)));
if (keys == NULL or key_lengths == NULL)
{
free(keys);
free(key_lengths);
keys= NULL;
key_lengths= NULL;
}
else
{
for (uint32_t x= 0; x < actual_loaded; ++x)
{
keys[x]= pairs[x].key;
key_lengths[x]= pairs[x].key_length;
}
}
/* We set this after we have loaded */
{
if (opt_non_blocking_io)
memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_NO_BLOCK, 1);
if (opt_tcp_nodelay)
memcached_behavior_set(memc, MEMCACHED_BEHAVIOR_TCP_NODELAY, 1);
}
pthread_mutex_lock(&sleeper_mutex);
master_wakeup= 1;
pthread_mutex_unlock(&sleeper_mutex);
pthread_t *threads= new (std::nothrow) pthread_t[opt_concurrency];
if (threads == NULL)
{
exit(EXIT_FAILURE);
}
for (uint32_t x= 0; x < opt_concurrency; x++)
{
thread_context_st *context= new thread_context_st(memc, opt_test);
context->test= opt_test;
context->initial_pairs= pairs;
context->initial_number= actual_loaded;
context->keys= keys;
context->key_lengths= key_lengths;
if (opt_test == SET_TEST)
{
context->execute_pairs= pairs_generate(opt_execute_number, VALUE_BYTES);
context->execute_number= opt_execute_number;
}
/* now you create the thread */
if (pthread_create(threads +x, NULL, run_task, (void *)context) != 0)
{
fprintf(stderr,"Could not create thread\n");
exit(1);
}
}
pthread_mutex_lock(&sleeper_mutex);
master_wakeup= 0;
pthread_mutex_unlock(&sleeper_mutex);
pthread_cond_broadcast(&sleep_threshhold);
gettimeofday(&start_time, NULL);
for (uint32_t x= 0; x < opt_concurrency; x++)
{
void *retval;
pthread_join(threads[x], &retval);
}
delete [] threads;
gettimeofday(&end_time, NULL);
conclusion->load_time= timedif(end_time, start_time);
conclusion->read_time= timedif(end_time, start_time);
free(keys);
free(key_lengths);
pairs_free(pairs);
memcached_free(memc);
}
void options_parse(int argc, char *argv[])
{
memcached_programs_help_st help_options[]=
{
{0},
};
static struct option long_options[]=
{
{(OPTIONSTRING)"concurrency", required_argument, NULL, OPT_SLAP_CONCURRENCY},
{(OPTIONSTRING)"debug", no_argument, &opt_verbose, OPT_DEBUG},
{(OPTIONSTRING)"quiet", no_argument, NULL, OPT_QUIET},
{(OPTIONSTRING)"execute-number", required_argument, NULL, OPT_SLAP_EXECUTE_NUMBER},
{(OPTIONSTRING)"flag", no_argument, &opt_displayflag, OPT_FLAG},
{(OPTIONSTRING)"flush", no_argument, &opt_flush, OPT_FLUSH},
{(OPTIONSTRING)"help", no_argument, NULL, OPT_HELP},
{(OPTIONSTRING)"initial-load", required_argument, NULL, OPT_SLAP_INITIAL_LOAD}, /* Number to load initially */
{(OPTIONSTRING)"non-blocking", no_argument, &opt_non_blocking_io, OPT_SLAP_NON_BLOCK},
{(OPTIONSTRING)"servers", required_argument, NULL, OPT_SERVERS},
{(OPTIONSTRING)"tcp-nodelay", no_argument, &opt_tcp_nodelay, OPT_SLAP_TCP_NODELAY},
{(OPTIONSTRING)"test", required_argument, NULL, OPT_SLAP_TEST},
{(OPTIONSTRING)"verbose", no_argument, &opt_verbose, OPT_VERBOSE},
{(OPTIONSTRING)"version", no_argument, NULL, OPT_VERSION},
{(OPTIONSTRING)"binary", no_argument, NULL, OPT_BINARY},
{(OPTIONSTRING)"udp", no_argument, NULL, OPT_UDP},
{0, 0, 0, 0},
};
bool opt_help= false;
bool opt_version= false;
int option_index= 0;
while (1)
{
int option_rv= getopt_long(argc, argv, "Vhvds:", long_options, &option_index);
if (option_rv == -1) break;
switch (option_rv)
{
case 0:
break;
case OPT_UDP:
if (opt_test == GET_TEST)
{
fprintf(stderr, "You can not run a get test in UDP mode. UDP mode "
"does not currently support get ops.\n");
exit(1);
}
opt_udp_io= true;
break;
case OPT_BINARY:
opt_binary= true;
break;
case OPT_VERBOSE: /* --verbose or -v */
opt_verbose= OPT_VERBOSE;
break;
case OPT_DEBUG: /* --debug or -d */
opt_verbose= OPT_DEBUG;
break;
case OPT_VERSION: /* --version or -V */
opt_version= true;
break;
case OPT_HELP: /* --help or -h */
opt_help= true;
break;
case OPT_SERVERS: /* --servers or -s */
opt_servers= strdup(optarg);
break;
case OPT_SLAP_TEST:
if (strcmp(optarg, "get") == 0)
{
if (opt_udp_io == 1)
{
fprintf(stderr, "You can not run a get test in UDP mode. UDP mode "
"does not currently support get ops.\n");
exit(EXIT_FAILURE);
}
opt_test= GET_TEST ;
}
else if (strcmp(optarg, "set") == 0)
{
opt_test= SET_TEST;
}
else if (strcmp(optarg, "mget") == 0)
{
opt_test= MGET_TEST;
}
else
{
fprintf(stderr, "Your test, %s, is not a known test\n", optarg);
exit(EXIT_FAILURE);
}
break;
case OPT_SLAP_CONCURRENCY:
errno= 0;
opt_concurrency= (unsigned int)strtoul(optarg, (char **)NULL, 10);
if (errno != 0)
{
fprintf(stderr, "Invalid value for concurrency: %s\n", optarg);
exit(EXIT_FAILURE);
}
break;
case OPT_SLAP_EXECUTE_NUMBER:
errno= 0;
opt_execute_number= (unsigned int)strtoul(optarg, (char **)NULL, 10);
if (errno != 0)
{
fprintf(stderr, "Invalid value for execute: %s\n", optarg);
exit(EXIT_FAILURE);
}
break;
case OPT_SLAP_INITIAL_LOAD:
errno= 0;
opt_createial_load= (unsigned int)strtoul(optarg, (char **)NULL, 10);
if (errno != 0)
{
fprintf(stderr, "Invalid value for initial load: %s\n", optarg);
exit(EXIT_FAILURE);
}
break;
case OPT_QUIET:
close_stdio();
break;
case '?':
/* getopt_long already printed an error message. */
exit(EXIT_FAILURE);
default:
abort();
}
}
if (opt_version)
{
version_command(PROGRAM_NAME);
exit(EXIT_SUCCESS);
}
if (opt_help)
{
help_command(PROGRAM_NAME, PROGRAM_DESCRIPTION, long_options, help_options);
exit(EXIT_SUCCESS);
}
if ((opt_test == GET_TEST or opt_test == MGET_TEST) and opt_createial_load == 0)
opt_createial_load= DEFAULT_INITIAL_LOAD;
if (opt_execute_number == 0)
opt_execute_number= DEFAULT_EXECUTE_NUMBER;
if (opt_concurrency == 0)
opt_concurrency= DEFAULT_CONCURRENCY;
}
void conclusions_print(conclusions_st *conclusion)
{
printf("\tThreads connecting to servers %u\n", opt_concurrency);
#ifdef NOT_FINISHED
printf("\tLoaded %u rows\n", conclusion->rows_loaded);
printf("\tRead %u rows\n", conclusion->rows_read);
#endif
if (opt_test == SET_TEST)
printf("\tTook %ld.%03ld seconds to load data\n", conclusion->load_time / 1000,
conclusion->load_time % 1000);
else
printf("\tTook %ld.%03ld seconds to read data\n", conclusion->read_time / 1000,
conclusion->read_time % 1000);
}
void flush_all(memcached_st *memc)
{
memcached_flush(memc, 0);
}
pairs_st *load_create_data(memcached_st *memc, unsigned int number_of,
unsigned int *actual_loaded)
{
memcached_st *memc_clone= memcached_clone(NULL, memc);
/* We always used non-blocking IO for load since it is faster */
memcached_behavior_set(memc_clone, MEMCACHED_BEHAVIOR_NO_BLOCK, 0);
pairs_st *pairs= pairs_generate(number_of, VALUE_BYTES);
*actual_loaded= execute_set(memc_clone, pairs, number_of);
memcached_free(memc_clone);
return pairs;
}