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//==========================================================================
//
// timeslice.c
//
// Timeslice test
//
//==========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002, 2006 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
// Software Foundation; either version 2 or (at your option) any later
// version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT
// 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): nickg
// Contributors: nickg
// Date: 2001-06-18
// Description: A basic timeslicing test.
//
//####DESCRIPTIONEND####
//==========================================================================
#include <pkgconf/kernel.h>
#include <pkgconf/hal.h>
#include <cyg/hal/hal_arch.h>
#include <cyg/kernel/smp.hxx>
#include <cyg/kernel/kapi.h>
#include <cyg/infra/testcase.h>
#include <cyg/infra/diag.h>
#include CYGHWR_MEMORY_LAYOUT_H
//==========================================================================
#if defined(CYGSEM_KERNEL_SCHED_TIMESLICE) && \
defined(CYGFUN_KERNEL_API_C) && \
defined(CYGSEM_KERNEL_SCHED_MLQUEUE) && \
defined(CYGVAR_KERNEL_COUNTERS_CLOCK) && \
!defined(CYGDBG_INFRA_DIAG_USE_DEVICE) && \
(CYGNUM_KERNEL_SCHED_PRIORITIES > 12)
//==========================================================================
#define STACK_SIZE CYGNUM_HAL_STACK_SIZE_TYPICAL
#if (CYGMEM_REGION_ram_SIZE <= 32768)
#define NTHREADS_MAX (CYGNUM_KERNEL_CPU_MAX*4)
#else
#define NTHREADS_MAX (CYGNUM_KERNEL_CPU_MAX*6)
#endif
static int ncpus = CYGNUM_KERNEL_CPU_MAX;
static char test_stack[STACK_SIZE];
static cyg_thread test_thread;
static cyg_handle_t main_thread;
static char stacks[NTHREADS_MAX][STACK_SIZE];
static cyg_thread test_threads[NTHREADS_MAX];
static cyg_handle_t threads[NTHREADS_MAX];
static volatile int failed = false;
static volatile cyg_uint32 slicerun[NTHREADS_MAX][CYGNUM_KERNEL_CPU_MAX];
//==========================================================================
void
test_thread_timeslice(CYG_ADDRESS id)
{
for(;;)
slicerun[id][CYG_KERNEL_CPU_THIS()]++;
}
//==========================================================================
void run_test_timeslice(int nthread)
{
int i,j;
cyg_uint32 cpu_total[CYGNUM_KERNEL_CPU_MAX];
cyg_uint32 cpu_threads[CYGNUM_KERNEL_CPU_MAX];
cyg_uint32 thread_total[NTHREADS_MAX];
CYG_TEST_INFO( "Timeslice Test: Check timeslicing works");
// Init flags.
for (i = 0; i < nthread; i++)
for( j = 0; j < ncpus; j++ )
slicerun[i][j] = 0;
// Set my priority higher than any I plan to create
cyg_thread_set_priority(cyg_thread_self(), 2);
for (i = 0; i < nthread; i++) {
cyg_thread_create(10, // Priority - just a number
test_thread_timeslice, // entry
i, // index
"test_thread", // Name
&stacks[i][0], // Stack
STACK_SIZE, // Size
&threads[i], // Handle
&test_threads[i] // Thread data structure
);
cyg_thread_resume( threads[i]);
}
// Just wait a while, until the threads have all run for a bit.
cyg_thread_delay( CYGNUM_KERNEL_SCHED_TIMESLICE_TICKS*100 );
// Suspend all the threads
for (i = 0; i < nthread; i++) {
cyg_thread_suspend(threads[i]);
}
// And check that a thread ran on each CPU, and that each thread
// ran.
diag_printf(" Thread ");
for( j = 0; j < ncpus; j++ )
{
cpu_total[j] = 0;
cpu_threads[j] = 0;
// " %11d" __123456789ab"
diag_printf(" CPU %2d",j);
}
// " %11d" __123456789ab"
diag_printf(" Total\n");
for (i = 0; i < nthread; i++)
{
thread_total[i] = 0;
diag_printf(" %2d ",i);
for( j = 0; j < ncpus; j++ )
{
thread_total[i] += slicerun[i][j];
cpu_total[j] += slicerun[i][j];
if( slicerun[i][j] > 0 )
cpu_threads[j]++;
diag_printf(" %11d",slicerun[i][j]);
}
diag_printf(" %11d\n",thread_total[i]);
if( thread_total[i] == 0 )
failed++;
}
diag_printf(" Total ");
for( j = 0; j < ncpus; j++ )
diag_printf(" %11d",cpu_total[j]);
diag_printf("\n");
diag_printf("Threads ");
for( j = 0; j < ncpus; j++ )
{
diag_printf(" %11d",cpu_threads[j]);
if( cpu_threads[j] < 2 )
failed++;
}
diag_printf("\n");
// Delete all the threads
for (i = 0; i < nthread; i++) {
cyg_thread_delete(threads[i]);
}
CYG_TEST_INFO( "Timeslice Test: done");
}
//==========================================================================
void
run_tests(CYG_ADDRESS id)
{
int step;
int nthread;
// Try to run about 10 times in total, with varying numbers of threads
// from only one extra up to the full set:
step = (NTHREADS_MAX - (1 + CYG_KERNEL_CPU_COUNT()))/10;
if( step == 0 ) step = 1;
for( nthread = 1 + CYG_KERNEL_CPU_COUNT() ;
nthread <= NTHREADS_MAX ;
nthread += step )
run_test_timeslice(nthread);
if( failed )
CYG_TEST_FAIL_FINISH("Timeslice test failed\n");
CYG_TEST_PASS_FINISH("Timeslice test OK");
}
//==========================================================================
void timeslice_main( void )
{
CYG_TEST_INIT();
// Work out how many CPUs we actually have.
ncpus = CYG_KERNEL_CPU_COUNT();
cyg_thread_create(0, // Priority - just a number
run_tests, // entry
0, // index
"run_tests", // Name
test_stack, // Stack
STACK_SIZE, // Size
&main_thread, // Handle
&test_thread // Thread data structure
);
cyg_thread_resume( main_thread);
cyg_scheduler_start();
}
//==========================================================================
#ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG
externC void
cyg_hal_invoke_constructors();
#endif
externC void
cyg_start( void )
{
#ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG
cyg_hal_invoke_constructors();
#endif
timeslice_main();
}
//==========================================================================
#else // CYGSEM_KERNEL_SCHED_TIMESLICE etc
externC void
cyg_start( void )
{
CYG_TEST_INIT();
CYG_TEST_INFO("Timeslice test requires:\n"
"CYGSEM_KERNEL_SCHED_TIMESLICE &&\n"
"CYGFUN_KERNEL_API_C && \n"
"CYGSEM_KERNEL_SCHED_MLQUEUE &&\n"
"CYGVAR_KERNEL_COUNTERS_CLOCK &&\n"
"!CYGDBG_INFRA_DIAG_USE_DEVICE &&\n"
"(CYGNUM_KERNEL_SCHED_PRIORITIES > 12)\n");
CYG_TEST_NA("Timeslice test requirements");
}
#endif // CYGSEM_KERNEL_SCHED_TIMESLICE etc.
//==========================================================================
// EOF timeslice.c
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