/*
 * Copyright (c) 2002, 2004-2006 Sendmail, Inc. and its suppliers.
 *	All rights reserved.
 *
 * By using this file, you agree to the terms and conditions set
 * forth in the LICENSE file which can be found at the top level of
 * the sendmail distribution.
 */

#include "sm/generic.h"
SM_RCSID("@(#)$Id: t-evthr-s.c,v 1.21 2006/03/14 19:22:36 ca Exp $")

#include "sm/assert.h"
#include "sm/error.h"
#include "sm/memops.h"
#include "sm/heap.h"
#include "sm/test.h"
#include "sm/evthr.h"

#include <stdio.h>

#define WHAT_TERM	0
#define WHAT_CONT	1

#define REPS 21

static uint Dbglvl = 0;
static int Verbose = 0;
timeval_T difft;

struct t_ctx_S
{
	char		*str;
	int		 what;
	int		 status;
	int		 called;
	timeval_T	 nextt;
};
typedef struct t_ctx_S t_ctx_T, *t_ctx_P;

static void
chkt(timeval_T exp, char *n, int c)
{
	int r;
	timeval_T now, dt;
	bool ok;

	r = gettimeofday(&now, NULL);
	SM_TEST(r == 0);
	timersub(&now, &exp, &dt);
	ok = timercmp(&dt, &difft, <=);
	SM_TEST(ok);
	if (!ok)
	{
		fprintf(stderr, "%s[%d]: ", n, c);
		ERRPRINTTV("now=", now);
		ERRPRINTTV("       sleep=", exp);
		ERRPRINTTV("        diff=", dt);
	}
}

/*
**  FCT1 -- deletes itself after first call
*/

static sm_ret_T
fct1(sm_evthr_task_P tsk)
{
	t_ctx_P fctx;

	SM_ASSERT(tsk != NULL);
	fctx = (t_ctx_P) tsk->evthr_t_actx;
	fctx->called++;
	chkt(fctx->nextt, "fct1", fctx->called);
	if (Verbose > 1)
		fprintf(stderr, "fct1: called %lx '%s'\n",
			(long) tsk, fctx->str);
	return EVTHR_DEL;
}

/*
**  FCT2 -- deletes itself after first call
*/

static sm_ret_T
fct2(sm_evthr_task_P tsk)
{
	t_ctx_P fctx;

	SM_ASSERT(tsk != NULL);
	fctx = (t_ctx_P) tsk->evthr_t_actx;
	fctx->called++;
	chkt(fctx->nextt, "fct2", fctx->called);
	if (Verbose > 1)
		fprintf(stderr, "fct2: called %lx '%s'\n",
			(long) tsk, fctx->str);
	return EVTHR_DEL;
}
/*
**  FCTS -- sleep 100000 usec up to REPS times.
*/

static sm_ret_T
fcts(sm_evthr_task_P tsk)
{
	int r;
	t_ctx_P fctx;
	timeval_T sleept, delay;

	SM_ASSERT(tsk != NULL);
	SM_ASSERT(evthr_got_slp(tsk));
	fctx = (t_ctx_P) tsk->evthr_t_actx;
	fctx->called++;
	chkt(fctx->nextt, "fcts", fctx->called);
	if (Verbose > 1)
		fprintf(stderr, "fcts: called %lx '%s'\n",
			(long) tsk, fctx->str);
	if (fctx->called >= REPS)
		return EVTHR_TERM|EVTHR_DEL;
	r = gettimeofday(&sleept, NULL);
	SM_TEST(r == 0);
	delay.tv_sec = 0;
	delay.tv_usec = 100000;
	timeradd(&sleept, &delay, &tsk->evthr_t_sleep);
	fctx->nextt = tsk->evthr_t_sleep;
	return EVTHR_SLPQ;
}

static void
testev(int sl1, int sl2, int what, int loops)
{
	sm_ret_T ret;
	int r;
	sm_evthr_ctx_P evthr_ctx;
	sm_evthr_task_P	task, task2, task3;
	t_ctx_T tctx, tctx2, tctx3;
	char data[16], dat2[16], dat3[16];
	timeval_T sleept, nextt, delay;

	ret = thr_init();
	SM_TEST(sm_is_success(ret));
	sm_memzero(&sleept, sizeof(sleept));
	ret = evthr_init(&evthr_ctx, 1, 6, 10);
	SM_TEST(sm_is_success(ret));
	SM_TEST(evthr_ctx != NULL);
	evthr_set_dbglvl(evthr_ctx, Dbglvl);

	strlcpy(data, "Sleep1", sizeof(data));
	strlcpy(dat2, "Sleep2", sizeof(dat2));
	strlcpy(dat3, "Sleep3", sizeof(dat3));
	if (sl1 >= 0)
	{
		r = gettimeofday(&sleept, NULL);
		SM_TEST(r == 0);
		sleept.tv_sec += sl1;
		tctx.str = data;
		tctx.what = what;
		tctx.status = loops;
		tctx.called = 0;
		tctx.nextt = sleept;
		ret = evthr_task_new(evthr_ctx, &task, EVTHR_EV_SL, -1, &sleept,
					fct1, (void *) &tctx);
		SM_TEST(sm_is_success(ret));
		SM_TEST(task != NULL);
	}

	if (sl2 >= 0)
	{
		r = gettimeofday(&sleept, NULL);
		SM_TEST(r == 0);
		sleept.tv_sec += sl2;
		tctx2.str = dat2;
		tctx2.what = what;
		tctx2.status = loops;
		tctx2.called = 0;
		tctx2.nextt = sleept;
		ret = evthr_task_new(evthr_ctx, &task2, EVTHR_EV_SL, -1, &sleept,
					fct2, (void *) &tctx2);
		SM_TEST(sm_is_success(ret));
		SM_TEST(task2 != NULL);
	}

	r = gettimeofday(&sleept, NULL);
	SM_TEST(r == 0);
	delay.tv_sec = 0;
	delay.tv_usec = 100000;
	timeradd(&sleept, &delay, &nextt);
	sleept = nextt;
	if (Verbose > 2)
		fprintf(stderr, "fcts:  sleep=%ld.%06ld\n",
			sleept.tv_sec, sleept.tv_usec);
/*
*/
	tctx3.str = dat3;
	tctx3.what = what;
	tctx3.status = loops;
	tctx3.called = 0;
	tctx3.nextt = sleept;
	ret = evthr_task_new(evthr_ctx, &task3, EVTHR_EV_SL, -1, &sleept,
				fcts, (void *) &tctx3);
	SM_TEST(sm_is_success(ret));
	SM_TEST(task3 != NULL);

	if (Verbose > 0)
	{
		gettimeofday(&sleept, NULL);
		ERRPRINTTV("before loop: ", sleept);
	}
	ret = evthr_loop(evthr_ctx);
	SM_TEST(sm_is_success(ret));
	if (!sm_is_success(ret))
		fprintf(stderr, "evthr_loop()=%x\n", ret);

	/*
	**  we should "hold" the system before deleting tasks?
	**  deleting the tasks while they are still in use
	**  will break things.
	*/

#if 0
	ret = evthr_task_del(evthr_ctx, task, THR_LOCK_UNLOCK);
	SM_TEST(sm_is_success(ret));
	if (!sm_is_success(ret))
		fprintf(stderr, "evthr_task_del()=%x\n", ret);

	ret = evthr_task_del(evthr_ctx, task2, THR_LOCK_UNLOCK);
	SM_TEST(sm_is_success(ret));
	if (!sm_is_success(ret))
		fprintf(stderr, "evthr_task_del()=%x\n", ret);
#endif /* 0 */

	SM_TEST(tctx.called == 1);
	SM_TEST(tctx2.called == 1);
	SM_TEST(tctx3.called == REPS);
	if (Verbose > 0)
	{
		fprintf(stderr, "fct1=%d, fct2=%d, fcts=%d\n",
			tctx.called, tctx2.called, tctx3.called);
	}
	ret = evthr_stop(evthr_ctx);
	SM_TEST(sm_is_success(ret));
	if (!sm_is_success(ret))
		fprintf(stderr, "evthr_stop()=%x\n", ret);
	ret = thr_stop();
	SM_TEST(sm_is_success(ret));
}

int
main(int argc, char *argv[])
{
	int c, sl1, sl2, what, loops;

	sl1 = 1;
	sl2 = 2;
	what = 1;
	loops = 16;
	difft.tv_sec = 0;
	difft.tv_usec = 50000;
	while ((c = getopt(argc, argv, "D:d:i:l:o:w:V")) != -1)
	{
		switch (c)
		{
		  case 'D':
			Dbglvl = atoi(optarg);
			break;
		  case 'd':
			difft.tv_usec = atoi(optarg);
			break;
		  case 'l':
			loops = atoi(optarg);
			break;
		  case 's':
			sl2 = atoi(optarg);
			break;
		  case 'w':
			what = atoi(optarg);
			break;
		  case 'V':
			Verbose++;
			break;
#if 0
		  default:
			usage(argv[0]);
			return(1);
#endif /* 0 */
		}
	}
	sm_test_begin(argc, argv, "test evthr sleep");
	testev(sl1, sl2, what, loops);
	return sm_test_end();
}