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//==========================================================================
//
//        bin_sem1.cxx
//
//        Binary semaphore test 1
//
//==========================================================================
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//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):     dsm
// Contributors:    dsm
// Date:          1998-02-24
// Description:   Tests basic binary semaphore functionality.
//####DESCRIPTIONEND####
 
#include <pkgconf/kernel.h>
 
#include <cyg/kernel/sched.hxx>        // Cyg_Scheduler::start()
#include <cyg/kernel/thread.hxx>       // Cyg_Thread
#include <cyg/kernel/thread.inl>
 
#include <cyg/kernel/sema.hxx>
 
#include <cyg/infra/testcase.h>
 
#include <cyg/kernel/sched.inl>
 
#define NTHREADS 2
 
#include "testaux.hxx"
 
static Cyg_Binary_Semaphore s0(true), s1(false), s2;
 
static volatile cyg_ucount8 q = 0;
 
static void entry0( CYG_ADDRWORD data )
{
    s0.wait();
    CHECK( 0 == q++ );
    s1.post();
    s0.wait();
    CHECK( 2 == q++ );
    CHECK( ! s0.posted() );
    CHECK( ! s0.trywait() );
    s0.post();
    CHECK( 3 == q++ );
    CHECK( s0.posted() );
    s1.post();
    CHECK( ! s2.posted() );
    s2.wait();
    CHECK( 5 == q++ );
    CYG_TEST_PASS_FINISH("Binary Semaphore 1 OK");
}
 
static void entry1( CYG_ADDRWORD data )
{
    CHECK( s1.posted() );
    s1.wait();
    CHECK( 1 == q++ );
    CHECK( ! s0.posted() );
    s0.post();
    s1.wait();
    CHECK( 4 == q++ );
    CHECK( s0.posted() );
    CHECK( s0.trywait() );
    CHECK( ! s0.posted() );
    s2.post();
    s0.wait();
    CYG_TEST_FAIL_FINISH("Not reached");
}
 
void bin_sem1_main( void )
{
    CYG_TEST_INIT();
 
    new_thread( entry0, 0);
    new_thread( entry1, 1);
 
#ifdef CYGIMP_THREAD_PRIORITY
    thread[0]->set_priority( 4 );
    thread[1]->set_priority( 5 ); // make sure the threads execute as intended
#endif
 
    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
    bin_sem1_main();
}
// EOF bin_sem1.cxx