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/*
This file is part of GNUnet.
(C) 2010-2013 Christian Grothoff (and other contributing authors)
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, 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file ats/perf_ats_logging.c
* @brief ats benchmark: logging for performance tests
* @author Christian Grothoff
* @author Matthias Wachs
*/
#include "platform.h"
#include "gnunet_util_lib.h"
#include "perf_ats.h"
#define LOGGING_FREQUENCY GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, 500)
static GNUNET_SCHEDULER_TaskIdentifier log_task;
static struct BenchmarkPeer *peers;
static int num_peers;
static char *name;
struct LoggingTimestep
{
struct GNUNET_TIME_Absolute timestamp;
struct LoggingTimestep *next;
struct LoggingTimestep *prev;
};
struct LoggingPeer
{
struct BenchmarkPeer *peer;
struct GNUNET_TIME_Absolute start;
struct LoggingTimestep *head;
struct LoggingTimestep *tail;
};
/**
* Log structure of length num_peers
*/
static struct LoggingPeer *lp;
static void
write_to_file ()
{
struct GNUNET_DISK_FileHandle *f;
char * filename;
char *data;
struct LoggingTimestep *cur;
int c_m;
GNUNET_asprintf (&filename, "%llu_%s.data", GNUNET_TIME_absolute_get().abs_value_us,name);
f = GNUNET_DISK_file_open (filename,
GNUNET_DISK_OPEN_WRITE | GNUNET_DISK_OPEN_CREATE,
GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE);
if (NULL == f)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Cannot open log file `%s'\n", filename);
GNUNET_free (filename);
return;
}
for (c_m = 0; c_m < num_peers; c_m++)
{
for (cur = lp[c_m].head; NULL != cur; cur = cur->next)
{
GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
"Master [%u]: timestamp %llu \n", lp[c_m].peer->no, cur->timestamp);
GNUNET_asprintf (&data, "%llu;\n", cur->timestamp);
if (GNUNET_SYSERR == GNUNET_DISK_file_write(f, data, strlen(data)))
GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Cannot write data to log file `%s'\n", filename);
GNUNET_free (data);
}
}
if (GNUNET_SYSERR == GNUNET_DISK_file_close(f))
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Cannot close log file `%s'\n", filename);
GNUNET_free (filename);
return;
}
GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Data file successfully written to log file `%s'\n", filename);
GNUNET_free (filename);
}
static void
collect_log_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
int c_m;
int c_s;
struct LoggingTimestep *lt;
struct BenchmarkPartner *p;
log_task = GNUNET_SCHEDULER_NO_TASK;
for (c_m = 0; c_m < num_peers; c_m++)
{
lt = GNUNET_malloc (sizeof (struct LoggingTimestep));
GNUNET_CONTAINER_DLL_insert_tail(lp[c_m].head, lp[c_m].tail, lt);
lt->timestamp = GNUNET_TIME_absolute_get();
for (c_s = 0; c_s < lp[c_m].peer->num_partners; c_s++)
{
p = &peers[c_m].partners[c_s];
GNUNET_log(GNUNET_ERROR_TYPE_INFO,
"Master [%u]: slave [%u]\n",
lp->peer->no, p->dest->no);
}
}
if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
return;
log_task = GNUNET_SCHEDULER_add_delayed (LOGGING_FREQUENCY,
&collect_log_task, NULL);
}
void
perf_logging_stop ()
{
int c_m;
struct GNUNET_SCHEDULER_TaskContext tc;
struct LoggingTimestep *cur;
if (GNUNET_SCHEDULER_NO_TASK != log_task)
GNUNET_SCHEDULER_cancel (log_task);
log_task = GNUNET_SCHEDULER_NO_TASK;
tc.reason = GNUNET_SCHEDULER_REASON_SHUTDOWN;
collect_log_task (NULL, &tc);
GNUNET_log(GNUNET_ERROR_TYPE_INFO,
_("Stop logging\n"));
write_to_file ();
for (c_m = 0; c_m < num_peers; c_m++)
{
while (NULL != (cur = lp[c_m].head))
{
GNUNET_CONTAINER_DLL_remove (lp[c_m].head, lp[c_m].tail, cur);
GNUNET_free (cur);
}
}
GNUNET_free (lp);
}
void
perf_logging_start (char * testname, struct BenchmarkPeer *masters, int num_masters)
{
int c_m;
GNUNET_log(GNUNET_ERROR_TYPE_INFO,
_("Start logging `%s'\n"), testname);
peers = masters;
num_peers = num_masters;
name = testname;
lp = GNUNET_malloc (num_masters * sizeof (struct LoggingPeer));
for (c_m = 0; c_m < num_masters; c_m ++)
{
lp[c_m].peer = &masters[c_m];
lp[c_m].start = GNUNET_TIME_absolute_get();
}
/* Schedule logging task */
log_task = GNUNET_SCHEDULER_add_now (&collect_log_task, NULL);
}
/* end of file perf_ats_logging.c */
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