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

//

//        cnt_sem1.cxx

//

//        Counting semaphore test 1

//

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

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

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

//

// Author(s):     dsm

// Contributors:    dsm

// Date:          1998-02-24

// Description:   Tests basic counting semaphore 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/sema.hxx>

#include <cyg/infra/testcase.h>

#include <cyg/kernel/sched.inl>

#define NTHREADS 2

#include "testaux.hxx"

static Cyg_Counting_Semaphore s0(0), s1(2), s2;

static volatile cyg_ucount8 q = 0;

static void entry0( CYG_ADDRWORD data )

{

    s0.wait();

    CHECK( 1 == q++ );

    s1.post();

    s0.wait();

    CHECK( 3 == q++ );

    CHECK( 0 == s0.peek() );

    CHECK( ! s0.trywait() );

    s0.post();

    CHECK( 4 == q++ );

    CHECK( 1 == s0.peek() );

    s0.post();

    CHECK( 2 == s0.peek() );

    s1.post();

    CHECK( 0 == s2.peek() );

    s2.wait();

    CHECK( 6 == q++ );

    CYG_TEST_PASS_FINISH("Counting Semaphore 1 OK");

}

static void entry1( CYG_ADDRWORD data )

{

    CHECK( 2 == s1.peek() );

    s1.wait();

    CHECK( 1 == s1.peek() );

    s1.wait();

    CHECK( 0 == q++ );

    CHECK( 0 == s0.peek() );

    s0.post();

    s1.wait();

    CHECK( 2 == q++ );

    s0.post();

    s1.wait();

    CHECK( 5 == q++ );

    CHECK( 2 == s0.peek() );

    CHECK( s0.trywait() );

    CHECK( 1 == s0.peek() );

    CHECK( s0.trywait() );

    CHECK( 0 == s0.peek() );

    s2.post();

    s0.wait();

    CYG_TEST_FAIL_FINISH("Not reached");

}

void cnt_sem1_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

    cnt_sem1_main();

}

// EOF cnt_sem1.cxx