/*-------------------------------------------------------------------------
 * drawElements Utility Library
 * ----------------------------
 *
 * Copyright 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 *//*!
 * \file
 * \brief Periodic timer test.
 *//*--------------------------------------------------------------------*/

#include "deTimerTest.h"

#include "deTimer.h"
#include "deRandom.h"
#include "deThread.h"

#include <stdio.h>

static void timerCallback(void *arg)
{
    volatile int *numCalls = (volatile int *)arg;
    ++(*numCalls);
}

void deTimer_selfTest(void)
{
    const int numIters                = 25;
    const int minInterval             = 1;
    const int maxInterval             = 100;
    const int intervalSleepMultiplier = 5;
    int iter;
    deRandom rnd;
    deTimer *timer        = DE_NULL;
    volatile int numCalls = 0;

    deRandom_init(&rnd, 6789);

    timer = deTimer_create(timerCallback, (void *)&numCalls);
    DE_TEST_ASSERT(timer);

    for (iter = 0; iter < numIters; iter++)
    {
        bool isSingle     = deRandom_getFloat(&rnd) < 0.25f;
        int interval      = minInterval + (int)(deRandom_getUint32(&rnd) % (uint32_t)(maxInterval - minInterval + 1));
        int expectedCalls = isSingle ? 1 : intervalSleepMultiplier;
        bool scheduleOk   = false;

        printf("Iter %d / %d: %d ms %s timer\n", iter + 1, numIters, interval, (isSingle ? "single" : "interval"));
        numCalls = 0;

        if (isSingle)
            scheduleOk = deTimer_scheduleSingle(timer, interval);
        else
            scheduleOk = deTimer_scheduleInterval(timer, interval);

        DE_TEST_ASSERT(scheduleOk);

        deSleep((uint32_t)(interval * intervalSleepMultiplier));
        deTimer_disable(timer);
        deSleep((uint32_t)interval);

        printf("  timer fired %d times, expected %d\n", numCalls, expectedCalls);
        DE_TEST_ASSERT(!isSingle || numCalls == 1);
    }

    deTimer_destroy(timer);
}