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/*==========================================================================

//

//        kmbox1.cxx

//

//        Kernel 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:          1998-06-02

// Description:   Tests basic mbox functionality.

//####DESCRIPTIONEND####

*/

#include <cyg/hal/hal_arch.h>           // CYGNUM_HAL_STACK_SIZE_TYPICAL

#include <cyg/kernel/kapi.h>

#include <cyg/infra/testcase.h>

#ifdef CYGFUN_KERNEL_API_C

#include "testaux.h"

#define NTHREADS 2

#define STACKSIZE CYGNUM_HAL_STACK_SIZE_TYPICAL

static cyg_handle_t thread[NTHREADS];

static cyg_thread thread_obj[NTHREADS];

static char stack[NTHREADS][STACKSIZE];

static cyg_handle_t m0, m1, m2;

static cyg_mbox mbox0, mbox1, mbox2;

static cyg_atomic q = 0;

#ifndef CYGMTH_MBOX_PUT_CAN_WAIT

#define cyg_mbox_PUT cyg_mbox_tryput

#endif

static void entry0( cyg_addrword_t data )

{

    cyg_count8 u,i,j;

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

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

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

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

    cyg_mbox_PUT(m0, (void *)55);

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

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

    for(u=1; cyg_mbox_tryput(m0, (void*)u); u++) {

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

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

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

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

    i = (cyg_count8)cyg_mbox_tryget(m0);

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

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

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

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

        i = (cyg_count8)cyg_mbox_get(m0);

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

    }

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

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

    // m0 now empty

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

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

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

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

    cyg_mbox_PUT(m1, (void*)99);                  // wakes t1

    i = (cyg_count8)cyg_mbox_get(m0);          // 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==cyg_mbox_timed_get(m0, cyg_current_time()+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(cyg_mbox_waiting_to_get(m0), "waiting_to_get()");

    cyg_mbox_PUT(m0, (void*)7);                   // wake t1 from timed get

#ifdef CYGMTH_MBOX_PUT_CAN_WAIT

    q=10;

    while(cyg_mbox_tryput(m0, (void*)6))          // fill m0's queue

        ;

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

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

    cyg_mbox_put(m1, (void*)4);                   // wake t1

    CYG_TEST_CHECK(!cyg_mbox_timed_put(m0, (void*)8, cyg_current_time()+10),

                   "timed put() unexpectedly worked");

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

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

    cyg_mbox_put(m0, (void*)9);

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

#endif

#endif

    i=(cyg_count8)cyg_mbox_get(m2);

    CYG_TEST_FAIL_FINISH("Not reached");

}

static void entry1( cyg_addrword_t data )

{

    cyg_count8 i;

    i = (cyg_count8)cyg_mbox_get(m1);

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

    cyg_mbox_PUT(m0, (void *)3);                  // wake t0

#if defined(CYGFUN_KERNEL_THREADS_TIMER)

    CYG_TEST_INFO("Testing timed functions");

    CYG_TEST_CHECK(7==(cyg_count8)cyg_mbox_timed_get(m0,cyg_current_time()+20),

                   "timed get()");

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

#ifdef CYGMTH_MBOX_PUT_CAN_WAIT

    CYG_TEST_CHECK(4==(cyg_count8)cyg_mbox_get(m1));

    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(cyg_mbox_waiting_to_put(m0), "waiting_to_put()");

    do {

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

        i=(cyg_count8)cyg_mbox_tryget(m0);

    } while(6==i);

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

#endif

#endif

    CYG_TEST_PASS_FINISH("Kernel C API Mbox 1 OK");

}

void kmbox1_main( void )

{

    CYG_TEST_INIT();

    cyg_thread_create(4, entry0 , (cyg_addrword_t)0, "kmbox1-0",

        (void *)stack[0], STACKSIZE, &thread[0], &thread_obj[0]);

    cyg_thread_resume(thread[0]);

    cyg_thread_create(4, entry1 , (cyg_addrword_t)1, "kmbox1-1",

        (void *)stack[1], STACKSIZE, &thread[1], &thread_obj[1]);

    cyg_thread_resume(thread[1]);

    cyg_mbox_create( &m0, &mbox0 );

    cyg_mbox_create( &m1, &mbox1 );

    cyg_mbox_create( &m2, &mbox2 );

    cyg_scheduler_start();

    CYG_TEST_FAIL_FINISH("Not reached");

}

externC void

cyg_start( void )

{

    kmbox1_main();

}

#else /* def CYGFUN_KERNEL_API_C */

externC void

cyg_start( void )

{

    CYG_TEST_INIT();

    CYG_TEST_NA("Kernel C API layer disabled");

}

#endif /* def CYGFUN_KERNEL_API_C */

/* EOF kmbox1.c */