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

//

//        ksem1.c

//

//        C API semaphore test 1

//

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

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

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

// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.

//

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// the terms of the GNU General Public License as published by the Free

// Software Foundation; either version 2 or (at your option) any later

// version.

//

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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

// for more details.

//

// You should have received a copy of the GNU General Public License

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//

// As a special exception, if other files instantiate templates or use

// macros or inline functions from this file, or you compile this file

// and link it with other works to produce a work based on this file,

// this file does not by itself cause the resulting work to be covered by

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// must still be made available in accordance with section (3) of the GNU

// General Public License v2.

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// on this file might be covered by the GNU General Public License.

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

// ####ECOSGPLCOPYRIGHTEND####

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

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

//

// Author(s):     dsm

// Contributors:    dsm

// Date:          1998-03-20

// Description:   Tests basic semaphore 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_sem_t s0, s1, s2;

static volatile cyg_ucount8 q = 0;

static void entry0( cyg_addrword_t data )

{

    cyg_count32 val;

    cyg_semaphore_wait(&s0);

    CHECK( 1 == q++ );

    cyg_semaphore_post(&s1);

    cyg_semaphore_wait(&s0);

    CHECK( 3 == q++ );

    cyg_semaphore_peek(&s0, &val);

    CHECK( 0 == val);

    CHECK( ! cyg_semaphore_trywait(&s0) );

    cyg_semaphore_post(&s0);

    CHECK( 4 == q++ );

    cyg_semaphore_peek(&s0, &val);

    CHECK( 1 == val);

    cyg_semaphore_post(&s0);

    cyg_semaphore_peek(&s0, &val);

    CHECK( 2 == val);

    cyg_semaphore_post(&s1);

    cyg_semaphore_peek(&s2, &val);

    CHECK( 0 == val);

    cyg_semaphore_wait(&s2);

    CHECK( 6 == q++ );

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

}

static void entry1( cyg_addrword_t data )

{

    cyg_count32 val;

    cyg_semaphore_peek(&s1, &val);

    CHECK( 2 == val);

    cyg_semaphore_wait(&s1);

    cyg_semaphore_peek(&s1, &val);

    CHECK( 1 == val);

    cyg_semaphore_wait(&s1);

    CHECK( 0 == q++ );

    cyg_semaphore_peek(&s0, &val);

    CHECK( 0 == val);

    cyg_semaphore_post(&s0);

    cyg_semaphore_wait(&s1);

    CHECK( 2 == q++ );

    cyg_semaphore_post(&s0);

    cyg_semaphore_wait(&s1);

    CHECK( 5 == q++ );

    cyg_semaphore_peek(&s0, &val);

    CHECK( 2 == val);

    CHECK( cyg_semaphore_trywait(&s0) );

    cyg_semaphore_peek(&s0, &val);

    CHECK( 1 == val);

    CHECK( cyg_semaphore_trywait(&s0) );

    cyg_semaphore_peek(&s0, &val);

    CHECK( 0 == val);

    cyg_semaphore_post(&s2);

    cyg_semaphore_wait(&s0);

    CYG_TEST_FAIL_FINISH("Not reached");

}

void ksem1_main( void )

{

    CYG_TEST_INIT();

    cyg_semaphore_init( &s0, 0);

    cyg_semaphore_init( &s1, 2);

    cyg_semaphore_init( &s2, 0);

    cyg_thread_create(4, entry0 , (cyg_addrword_t)0, "ksem1-0",

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

    cyg_thread_resume(thread[0]);

    cyg_thread_create(4, entry1 , (cyg_addrword_t)1, "ksem1-1",

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

    cyg_thread_resume(thread[1]);

    cyg_scheduler_start();

    CYG_TEST_FAIL_FINISH("Not reached");

}

externC void

cyg_start( void )

{

    ksem1_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 ksem1.c */