/*
 * Copyright (c) 2006 Claus Assmann
 *
 * By using this file, you agree to the terms and conditions set
 * forth in the license/LICENSE.3C file which can be found at the
 * top level of this source code distribution.
 */

/*
**  (performance) Test program to add entries to AQ and remove them from AQ.
**  This test isn't very realistic as adding and deleting run alternating;
**  each task adds/removes a given number of entries (unless a "fill rate" is
**  exceeded) and then wakes up the other task.
**  Should the code randomly invoke the "add" task more often?
**  For example, use a loop with a random (small) size?
**
**  Moreover, the code is slightly "outdated": it uses aq_ta_find()
**  whereas the code in qm_fr_sc_react() accesses aq_ta directly via dadb
**  (which isn't used in this test program at all).
*/

#include "sm/generic.h"
SM_IDSTR(id, "@(#)$Id: t-aq-perf-1.c,v 1.6 2007/01/01 02:10:25 ca Exp $")

#include "sm/debug.h"
#include "sm/heap.h"
#include "sm/sysexits.h"
#include "sm/test.h"
#include "sm/io.h"
#include "sm/rfc2821.h"
#include "sm/actdb-int.h"
#include "sm/aqrdq.h"
#define QMGR_DEBUG_DEFINE 1
#include "sm/qmgr-int.h"
#include "sm/qmgrdbg.h"
#define QMGR_LOG_DEFINES 1
#include "log.h"

static int Verbose = 0;
static int Rand = 0;
static bool Done = false;
static aq_ctx_P Aq_ctx;
static uint Once_TAs;
static uint Total_TAs;
static uint Fill = 90;
static uint Rate = 0;
static uint Aq_size = 90;
static sm_evthr_ctx_P Ev_ctx;
static sm_evthr_task_P Tsk_add, Tsk_del;

#if SM_HEAP_CHECK
# include "sm/io.h"
extern SM_DEBUG_T SmHeapCheck;
# define HEAP_CHECK (SmHeapCheck > 0)
#else
# define HEAP_CHECK 0
#endif

#define SM_AQ_RCPTS	256
#define RCPT_MAX_LEN	256

sm_cstr_P Tst_CDB_id;
static sm_log_ctx_P Lctx = NULL;
static sm_str_P Defaultdomain = NULL;

/*
**  AQ_T_ADD -- add entries to AQ and rdq
*/

static uint32_t Total_added;

static sm_ret_T
aq_t_add(sm_evthr_task_P tsk)
{
	sm_ret_T ret;
	uint32_t added;
	bool wakeup;
	timeval_T tv_now, delay;
	time_T now;

	ret = evthr_timeval(Ev_ctx, &tv_now);
	SM_TEST_ERR(ret);
	now = tv_now.tv_sec;
	wakeup = false;
	if (Verbose > 1)
		sm_io_fprintf(smioerr, "func=aq_t_add, called=%ld.%06ld\n", tv_now.tv_sec, tv_now.tv_usec);
	do {
		ret = qm_test_fill_aq(Lctx, Aq_ctx, now, Total_TAs, Once_TAs, Fill, Rate, Defaultdomain, &added, THR_LOCK_UNLOCK);
		Total_added += added;
		if (Verbose > 3)
			sm_io_fprintf(smioerr, "func=aq_t_add, added=%u, total=%u, ret=%d\n", added, Total_added, ret);
		SM_TEST_ERR(ret);
		if (added > 0) {
			if (Verbose > 1)
				sm_io_fprintf(smioerr, "func=aq_t_add, added=%u, total=%u, ret=%d\n", added, Total_added, ret);
			wakeup = true;
		}
		else if (0 == added ) {
			if (Verbose > 1)
				sm_io_fprintf(smioerr, "func=aq_t_add, added=%u, ret=%d\n", added, ret);
			if (SM_NOTDONE == ret)
				Done = true;
		}
	} while (Rand > 0 && added > 0 && !Done && rand() < Rand);

	if (wakeup) {
		ret = evthr_wakeup_task(Tsk_del);
		SM_TEST_E(0 == ret);
	}

	if (Verbose > 3)
		sm_io_fprintf(smioerr, "func=aq_t_add, added=%u, total=%u, Done=%d\n", added, Total_added, Done);
	delay.tv_usec = 1;
	delay.tv_sec = Done ? 9 : 0;
	timeradd(&tv_now, &delay, &tsk->evthr_t_sleep);
	return EVTHR_SLPQ;

  error:
	sm_io_fprintf(smioerr, "func=aq_t_add, error=%d\n", ret);
	return EVTHR_TERM;
}

/*
**  AQ_T_DEL -- delete entries from AQ
*/

static uint32_t Total_removed;

static sm_ret_T
aq_t_del(sm_evthr_task_P tsk)
{
	sm_ret_T ret;
	int i, status;
	uint todo_entries, entries_removed;
	bool done, aq_locked;
	aq_rcpt_P aq_rcpt;
	aq_ta_P aq_ta;
	aqrdq_ctx_P aqrdq;
	timeval_T tv_now, delay;

	entries_removed = 0;
	done = false;
	aq_locked = false;
	ret = SM_FAILURE;
	SM_ASSERT(!aq_locked);
	status = pthread_mutex_lock(&Aq_ctx->aq_mutex);
	SM_TEST_E(0 == status);
	aq_locked = true;

	ret = evthr_timeval(Ev_ctx, &tv_now);
	if (Verbose > 1)
		sm_io_fprintf(smioerr, "func=aq_t_del, called=%ld.%06ld\n", tv_now.tv_sec, tv_now.tv_usec);
	aqrdq = AQ_RDQS_FIRST(Aq_ctx->aq_rdqs);
	if (NULL == aqrdq) {
		/* no entries have been added? */
		if (Verbose > 0)
			sm_io_fprintf(smioerr, "func=aq_t_del, aq_rdqs=empty\n");
		goto unlock;
	}
	todo_entries = aqrdq->aqrdq_entries;
	if (0 == todo_entries) {
		if (Verbose > 0)
			sm_io_fprintf(smioerr, "func=aq_t_del, todo=0\n");
		goto unlock;
	}

	status = pthread_mutex_unlock(&Aq_ctx->aq_mutex);
	SM_TEST_E(0 == status);
	aq_locked = false;

	/* don't remove more entries than added in a single invocation */
	if (todo_entries > Once_TAs && !Done) {
		todo_entries = Once_TAs;
	}

#if HAVE_MONCONTROL
	moncontrol(1);
#endif
	for (i = 0; i < todo_entries; i++, entries_removed++)
	{
		status = pthread_mutex_lock(&Aq_ctx->aq_mutex);
		SM_TEST_E(0 == status);
		aq_locked = true;
		if (AQ_RDQ_EMPTY(aqrdq->aqrdq_rcpts))
			break;
		aq_rcpt = AQ_RDQ_FIRST(aqrdq->aqrdq_rcpts);
		SM_TEST_E(aq_rcpt != NULL);
		SM_IS_AQ_RCPT(aq_rcpt);
		status = pthread_mutex_unlock(&Aq_ctx->aq_mutex);
		SM_TEST_E(0 == status);
		aq_locked = false;

		ret = aq_ta_find(Aq_ctx, aq_rcpt->aqr_ss_ta_id, true, &aq_ta);
		SM_TEST_ERR(ret);
		ret = aq_rdq_rm(Aq_ctx, aq_rcpt, THR_LOCK_UNLOCK, Lctx);
		SM_TEST_ERR(ret);
		ret = aq_rcpt_rm(Aq_ctx, aq_rcpt, AQR_RM_LOCK|AQR_RM_N_RDQ|AQR_RM_I_RDQ);
		SM_TEST_ERR(ret);
		ret = aq_ta_rm(Aq_ctx, aq_ta, true);
		SM_TEST_ERR(ret);
	}
#if HAVE_MONCONTROL
	moncontrol(1);
#endif

  unlock:
	if (aq_locked) {
		status = pthread_mutex_unlock(&Aq_ctx->aq_mutex);
		SM_TEST_E(0 == status);
		aq_locked = false;
	}

	if (!Done) {
		ret = evthr_wakeup_task(Tsk_add);
		SM_TEST_E(0 == ret);
	}

	Total_removed += entries_removed;
	if (Verbose > 1)
		sm_io_fprintf(smioerr, "func=aq_t_del, removed=%u, total=%u, AQ=%u, return=%d, Done=%d\n"
			, entries_removed, Total_removed, Total_added - Total_removed, ret, Done);
	delay.tv_usec = 0;
	delay.tv_sec = 1;
	timeradd(&tv_now, &delay, &tsk->evthr_t_sleep);
	return Done ? EVTHR_TERM : EVTHR_SLPQ;

  error:
	if (aq_locked) {
		status = pthread_mutex_unlock(&Aq_ctx->aq_mutex);
		SM_TEST_E(0 == status);
		aq_locked = false;
	}
	sm_io_fprintf(smioerr, "func=aq_t_del, error=%d\n", ret);
	return EVTHR_TERM;
}

static sm_ret_T
aq_t_init(void)
{
	sm_ret_T ret;
	sm_logconfig_P lcfg;
	sessta_id_T ta_id;

	ret = SM_SUCCESS;

	Aq_ctx = NULL;

	ret = aq_open(NULL /*qmgr_ctx*/, &Aq_ctx, Aq_size, 0);
	SM_TEST_ERR(ret);

	sm_snprintf(ta_id, SMTP_STID_SIZE, SMTPS_STID_FORMAT, (id_count_T)0, 0);
	Tst_CDB_id = sm_cstr_scpyn((uchar *)ta_id, sizeof(ta_id));
	if (NULL == Tst_CDB_id)
		return sm_error_temp(SM_EM_Q, ENOMEM);
	Defaultdomain = sm_str_scpy(NULL, "example.com", 64);
	SM_TEST_E(Defaultdomain != NULL);

	ret = sm_log_create(NULL, &Lctx, &lcfg);
	SM_TEST_ERR(ret);
	ret = sm_log_setfp_fd(Lctx, smioerr, SMIOERR_FILENO);
	SM_TEST_ERR(ret);
	ret = sm_log_setdebuglevel(Lctx, 10);
	SM_TEST_ERR(ret);

	srand(time(0));

	/* initialize event threads system */
	ret = evthr_init(&Ev_ctx, 2, 6, 2);
	if (sm_is_err(ret)) {
		sm_io_fprintf(smioerr,
			"sev=ERROR, func=aq_t_init1, evthr_init=%m\n", ret);
		SM_TEST_ERR(ret);
	}
#if EVTHR_DEBUG
	evthr_set_dbglvl(Ev_ctx, 0);
#endif

	return ret;

  error:
	return ret;
}

static sm_ret_T
aq_t_start(void)
{
	sm_ret_T ret;
	timeval_T tv_now, sleept, delay;

	ret = evthr_timeval(Ev_ctx, &tv_now);
	SM_TEST_ERR(ret);
	delay.tv_usec = 1;
	delay.tv_sec = 0;
	timeradd(&tv_now, &delay, &sleept);

	ret = evthr_task_new(Ev_ctx, &Tsk_add,
		EVTHR_EV_SL, INVALID_FD, &sleept, aq_t_add, &Aq_ctx);
	SM_TEST_ERR(ret);

	delay.tv_usec = 0;
	delay.tv_sec = 1;
	timeradd(&tv_now, &delay, &sleept);
	ret = evthr_task_new(Ev_ctx, &Tsk_del,
		EVTHR_EV_SL, INVALID_FD, &sleept, aq_t_del, &Aq_ctx);
	SM_TEST_ERR(ret);

	return ret;

  error:
	return ret;
}



/*
**  AQ_T_PERF -- add/remove entries to/from AQ
*/

static sm_ret_T
aq_t_perf(void)
{
	sm_ret_T ret;

	ret = aq_t_init();
	SM_TEST_ERR(ret);
	ret = aq_t_start();
	SM_TEST_ERR(ret);
	ret = evthr_loop(Ev_ctx);
	SM_TEST_ERR(ret);

	ret = aq_close(Aq_ctx);
	return ret;

  error:
	return ret;
}

static void
usage(const char *prg)
{
	sm_io_fprintf(smioerr, "usage: %s [options]\n", prg);
	sm_io_fprintf(smioerr, "Test AQ insertion, lookups, and removal (domains are random numbers)\n");
	sm_io_fprintf(smioerr, "options:\n");
	sm_io_fprintf(smioerr, "-e n  specify number of recipients to add each iteration\n");
	sm_io_fprintf(smioerr, "-f n  specify allowed fill of AQ (per cent)\n");
	sm_io_fprintf(smioerr, "-n n  specify total number of recipients to use\n");
	sm_io_fprintf(smioerr, "-R n  repead addition if rand() is less than n\n");
	sm_io_fprintf(smioerr, "-r n  fill rate\n");
	sm_io_fprintf(smioerr, "-s n  specify size of AQ\n");
	sm_io_fprintf(smioerr, "-V    increase verbosity\n");
	exit(EX_USAGE);
}


int
main(int argc, char **argv)
{
	int c;
	sm_ret_T r;
	char *prg;

#if HAVE_MONCONTROL
	moncontrol(1);
#endif
	prg = argv[0];
	Total_TAs = SM_AQ_RCPTS;
	Aq_size = SM_AQ_RCPTS;
	Once_TAs = Total_TAs / 10;
#if SM_HEAP_CHECK
	SmHeapCheck = 0;
#endif
	while ((c = getopt(argc, argv, "Ce:f:H:l:n:R:r:s:V")) != -1) {
		switch (c) {
		  case 'e':
			Once_TAs = (uint) strtoul(optarg, NULL, 0);
			break;
		  case 'f':
			Fill = (uint) strtoul(optarg, NULL, 0);
			break;
#if SM_HEAP_CHECK
		  case 'H':
			SmHeapCheck = atoi(optarg);
			break;
#endif
		  case 'n':
			Total_TAs = (uint) strtoul(optarg, NULL, 0);
			break;
		  case 'R':
			Rand = (int) strtoul(optarg, NULL, 0);
			break;
		  case 'r':
			Rate = (uint) strtoul(optarg, NULL, 0);
			break;
		  case 's':
			Aq_size = (uint) strtoul(optarg, NULL, 0);
			break;
		  case 'V':
			++Verbose;
			break;
		  default:
			usage(prg);
			return EX_USAGE;
		}
	}

	sm_test_begin(argc, argv, "test AQ perf 1");

	r = aq_t_perf();

#if SM_HEAP_CHECK
	if (HEAP_CHECK) {
		sm_io_fprintf(smioout, "heap should be empty except for makebuf:\n");
		sm_heap_report(smioout, 3);
	}
#endif
	sm_io_flush(smioout);
	return sm_test_end();
}