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/*
This file is part of GNUnet.
Copyright (C) 2012 GNUnet e.V.
GNUnet is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published
by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Affero General Public License for more details.
*/
/**
* @file fs/gnunet-fs-profiler.c
* @brief tool to benchmark/profile file-sharing
* @author Christian Grothoff
*/
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_testbed_service.h"
/**
* Final status code.
*/
static int ret;
/**
* Data file with the hosts for the testbed.
*/
static char *host_filename;
/**
* Number of peers to run in the experiment.
*/
static unsigned int num_peers;
/**
* After how long do we abort the test?
*/
static struct GNUNET_TIME_Relative timeout;
/**
* Handle to the task run during termination.
*/
static struct GNUNET_SCHEDULER_Task * terminate_taskid;
/**
* Function called after we've collected the statistics.
*
* @param cls NULL
* @param op the operation that has been finished
* @param emsg error message in case the operation has failed; will be NULL if
* operation has executed successfully.
*/
static void
shutdown_task (void *cls,
struct GNUNET_TESTBED_Operation *op,
const char *emsg)
{
if (NULL != emsg)
fprintf (stderr,
"Error collecting statistics: %s\n",
emsg);
GNUNET_SCHEDULER_shutdown ();
}
/**
* Callback function to process statistic values from all peers.
* Prints them out.
*
* @param cls closure
* @param peer the peer the statistic belong to
* @param subsystem name of subsystem that created the statistic
* @param name the name of the datum
* @param value the current value
* @param is_persistent GNUNET_YES if the value is persistent, GNUNET_NO if not
* @return GNUNET_OK to continue, GNUNET_SYSERR to abort iteration
*/
static int
process_stats (void *cls,
const struct GNUNET_TESTBED_Peer *peer,
const char *subsystem,
const char *name,
uint64_t value,
int is_persistent)
{
fprintf (stdout,
"%p-%s: %s = %llu\n",
peer,
subsystem,
name,
(unsigned long long) value);
return GNUNET_OK;
}
/**
* Task run on shutdown to terminate. Triggers printing out
* all statistics.
*
* @param cls NULL
*/
static void
terminate_task (void *cls)
{
if (NULL != terminate_taskid)
{
GNUNET_SCHEDULER_cancel (terminate_taskid);
terminate_taskid = NULL;
}
GNUNET_TESTBED_get_statistics (0, NULL,
NULL, NULL,
&process_stats,
&shutdown_task,
NULL);
}
/**
* Task run on timeout to terminate. Triggers printing out
* all statistics.
*
* @param cls NULL
*/
static void
timeout_task (void *cls)
{
terminate_taskid = NULL;
GNUNET_SCHEDULER_shutdown ();
}
/**
* Signature of a main function for a testcase.
*
* @param cls closure
* @param h the run handle
* @param num_peers number of peers in 'peers'
* @param peers handle to peers run in the testbed
* @param links_succeeded the number of overlay link connection attempts that
* succeeded
* @param links_failed the number of overlay link connection attempts that
* failed
*/
static void
test_master (void *cls,
struct GNUNET_TESTBED_RunHandle *h,
unsigned int num_peers,
struct GNUNET_TESTBED_Peer **peers,
unsigned int links_succeeded,
unsigned int links_failed)
{
// const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
// FIXME: enable clients to signal 'completion' before timeout;
// in that case, run the 'terminate_task' "immediately"
if (0 != timeout.rel_value_us)
terminate_taskid = GNUNET_SCHEDULER_add_delayed (timeout,
&timeout_task,
NULL);
GNUNET_SCHEDULER_add_shutdown (&terminate_task,
NULL);
}
/**
* Main function that will be run by the scheduler.
*
* @param cls closure
* @param args remaining command-line arguments
* @param cfgfile name of the configuration file used (for saving, can be NULL!)
* @param cfg configuration
*/
static void
run (void *cls, char *const *args, const char *cfgfile,
const struct GNUNET_CONFIGURATION_Handle *cfg)
{
GNUNET_TESTBED_run (host_filename,
cfg,
num_peers,
0, NULL, NULL,
&test_master, (void *) cfg);
}
/**
* Program to run a file-sharing testbed.
*
* @param argc number of arguments from the command line
* @param argv command line arguments
* @return 0 ok, 1 on error
*/
int
main (int argc, char *const *argv)
{
struct GNUNET_GETOPT_CommandLineOption options[] = {
GNUNET_GETOPT_option_uint ('n',
"num-peers",
"COUNT",
gettext_noop ("run the experiment with COUNT peers"),
&num_peers),
GNUNET_GETOPT_option_string ('H',
"hosts",
"HOSTFILE",
gettext_noop ("specifies name of a file with the HOSTS the testbed should use"),
&host_filename),
GNUNET_GETOPT_option_relative_time ('t',
"timeout",
"DELAY",
gettext_noop ("automatically terminate experiment after DELAY"),
&timeout),
GNUNET_GETOPT_OPTION_END
};
if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
return 2;
ret = (GNUNET_OK ==
GNUNET_PROGRAM_run (argc, argv, "gnunet-fs-profiler",
gettext_noop ("run a testbed to measure file-sharing performance"), options, &run,
NULL)) ? ret : 1;
GNUNET_free ((void*) argv);
return ret;
}
/* end of gnunet-fs-profiler.c */
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