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//==========================================================================

//

//        mbox1.cxx

//

//        Mbox test 1

//

//==========================================================================

//####ECOSGPLCOPYRIGHTBEGIN####

// -------------------------------------------

// This file is part of eCos, the Embedded Configurable Operating System.

// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.

//

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// or inline functions from this file, or you compile this file and link it

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//####ECOSGPLCOPYRIGHTEND####

//==========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author:        dsm

// Contributors:    dsm

// Date:          1998-05-19

// Description:   Tests basic mbox functionality.

//####DESCRIPTIONEND####

#include <pkgconf/kernel.h>

#include <cyg/kernel/thread.hxx>        // Cyg_Thread

#include <cyg/kernel/thread.inl>

#include <cyg/kernel/sched.hxx>         // Cyg_Scheduler::start()

#include <cyg/kernel/mbox.hxx>

#include <cyg/infra/testcase.h>

#include <cyg/kernel/sched.inl>

#include <cyg/kernel/timer.hxx>         // Cyg_Timer

#include <cyg/kernel/clock.inl>         // Cyg_Clock

#define NTHREADS 2

#include "testaux.hxx"

static Cyg_Mbox m0, m1, m2;

static volatile cyg_atomic q = 0;

#ifndef CYGMTH_MBOX_PUT_CAN_WAIT

#define PUT tryput

#endif

static void entry0( CYG_ADDRWORD data )

{

    cyg_count8 u,i;

    CYG_TEST_INFO("Testing put() and tryput() without wakeup");

    CYG_TEST_CHECK(!m0.waiting_to_get(), "mbox not initialized properly");

    CYG_TEST_CHECK(0==m0.peek(), "mbox not initialized properly");

    CYG_TEST_CHECK(NULL==m0.peek_item(), "mbox not initialized properly");

    m0.PUT((void *)55);

    CYG_TEST_CHECK(1==m0.peek(), "peek() wrong");

    CYG_TEST_CHECK(55==(cyg_count8)m0.peek_item(), "peek_item() wrong");

    for(u=1; m0.tryput((void*)u); u++) {

        CYG_TEST_CHECK(55==(cyg_count8)m0.peek_item(), "peek_item() wrong");

        CYG_TEST_CHECK(u+1==m0.peek(), "peek() wrong");

    }

    CYG_TEST_CHECK(u == CYGNUM_KERNEL_SYNCH_MBOX_QUEUE_SIZE, "mbox not configured size");

    // m0 now contains ( 55 1 2 .. u-1 )

    CYG_TEST_CHECK(u==m0.peek(), "peek() wrong");

    CYG_TEST_CHECK(55==(cyg_count8)m0.peek_item(), "peek_item() wrong");

    CYG_TEST_INFO("Testing get(), tryget()");

    i = (cyg_count8)m0.tryget();

    CYG_TEST_CHECK( 55 == i, "Got wrong message" );

    for(cyg_count8 j=1; j<u;j++) {

        CYG_TEST_CHECK( j == (cyg_count8)m0.peek_item(), "peek_item()" );

        CYG_TEST_CHECK( m0.peek() == u - j, "peek() wrong" );

        i = (cyg_count8)m0.get();

        CYG_TEST_CHECK( j == i, "Got wrong message" );

    }

    CYG_TEST_CHECK( NULL == m0.peek_item(), "peek_item()" );

    CYG_TEST_CHECK( 0 == m0.peek(), "peek()");

    // m0 now empty

    CYG_TEST_CHECK(!m0.waiting_to_put(), "waiting_to_put()");

    CYG_TEST_CHECK(!m0.waiting_to_get(), "waiting_to_get()");

    CYG_TEST_INFO("Testing get(), blocking");

    CYG_TEST_CHECK(0==q++, "bad synchronization");

    m1.PUT((void*)99);                  // wakes t1

    i = (cyg_count8)m0.get();          // sent by t1

    CYG_TEST_CHECK(3==i, "Recieved wrong message");

    CYG_TEST_CHECK(2==q++, "bad synchronization");

#ifdef CYGFUN_KERNEL_THREADS_TIMER

    CYG_TEST_CHECK(NULL==m0.get(

        Cyg_Clock::real_time_clock->current_value() + 10),

                   "unexpectedly found message");

    CYG_TEST_CHECK(3==q++, "bad synchronization");

    // Allow t1 to run as this get times out

    // t1 must not be waiting...

    CYG_TEST_CHECK(m0.waiting_to_get(), "waiting_to_get()");

    m0.PUT((void*)7);                   // wake t1 from timed get

#ifdef CYGMTH_MBOX_PUT_CAN_WAIT

    q=10;

    while(m0.tryput((void*)6))          // fill m0's queue

        ;

    // m0 now contains ( 6 ... 6 )

    CYG_TEST_CHECK(10==q++, "bad synchronization");

    m1.put((void*)4);                   // wake t1

    CYG_TEST_CHECK(!m0.put((void*)8, 2), "timed put() unexpectedly worked");

    CYG_TEST_CHECK(12==q++, "bad synchronization");

    // m0 still contains ( 6 ... 6 )

    m0.put((void*)9);

    CYG_TEST_CHECK(13==q++, "bad synchronization");

#endif

#endif

    i=(cyg_count8)m2.get();

    CYG_TEST_FAIL_FINISH("Not reached");

}

static void entry1( CYG_ADDRWORD data )

{

    cyg_count8 i;

    i = (cyg_count8)m1.get();

    CYG_TEST_CHECK(1==q++, "bad synchronization");

    m0.PUT((void *)3);                  // wake t0

#ifdef CYGFUN_KERNEL_THREADS_TIMER

    CYG_TEST_INFO("Testing timed functions");

    CYG_TEST_CHECK(7==(cyg_count8)m0.get(

        Cyg_Clock::real_time_clock->current_value() + 20), "timed get()");

    CYG_TEST_CHECK(4==q++, "bad synchronization");

#ifdef CYGMTH_MBOX_PUT_CAN_WAIT

    CYG_TEST_CHECK(4==(cyg_count8)m1.get());

    CYG_TEST_CHECK(11==q++, "bad synchronization");

    thread[0]->delay(20);    // allow t0 to reach put on m1

    CYG_TEST_CHECK(14==q++, "bad synchronization");

    CYG_TEST_CHECK(m0.waiting_to_put(), "waiting_to_put()");

    do {

        // after first get m0 contains ( 6 .. 6 9 )

        i=(cyg_count8)m0.tryget();

    } while(6==i);

    CYG_TEST_CHECK(9==i,"put gone awry");

#endif

#endif

    CYG_TEST_PASS_FINISH("Mbox 1 OK");

}

void mbox1_main( void )

{

    CYG_TEST_INIT();

    new_thread(entry0, 0);

    new_thread(entry1, 1);

    Cyg_Scheduler::start();

    CYG_TEST_FAIL_FINISH("Not reached");

}

externC void

cyg_start( void )

{

#ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG

    cyg_hal_invoke_constructors();

#endif

    mbox1_main();

}

// EOF mbox1.cxx