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/*=================================================================
//
//        ksem1.c
//
//        C API semaphore test 1
//
//==========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####                                            
// -------------------------------------------                              
// This file is part of eCos, the Embedded Configurable Operating System.   
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under    
// the terms of the GNU General Public License as published by the Free     
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// 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        
// along with eCos; if not, write to the Free Software Foundation, Inc.,    
// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            
//
// 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   
// the GNU General Public License. However the source code for this file    
// must still be made available in accordance with section (3) of the GNU   
// General Public License v2.                                               
//
// This exception does not invalidate any other reasons why a work based    
// 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 */