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phoenix |
//==========================================================================
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//
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// clocktruth.cxx
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//
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// Clock Converter test
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//
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//==========================================================================
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//####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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// Copyright (C) 2003 Gary Thomas
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later version.
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with eCos; if not, write to the Free Software Foundation, Inc.,
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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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//
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// As a special exception, if other files instantiate templates or use macros
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// or inline functions from this file, or you compile this file and link it
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// with other works to produce a work based on this file, this file does not
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// by itself cause the resulting work to be covered by the GNU General Public
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// License. However the source code for this file must still be made available
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// in accordance with section (3) of the GNU General Public License.
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//
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// This exception does not invalidate any other reasons why a work based on
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// this file might be covered by the GNU General Public License.
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//
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// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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// at http://sources.redhat.com/ecos/ecos-license/
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// -------------------------------------------
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//####ECOSGPLCOPYRIGHTEND####
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//==========================================================================
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//#####DESCRIPTIONBEGIN####
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//
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// Author(s): hmt
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// Contributors: hmt
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// Date: 2001-06-05
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// Description: Tests the Kernel Real Time Clock for accuracy using a human
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//
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//####DESCRIPTIONEND####
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// This is for a human to watch to sanity check the clock rate.
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// It's easier to see what's happening if you enable this:
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#define nRUNFOREVER
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#include <pkgconf/kernel.h>
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#include <cyg/kernel/clock.hxx>
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#include <cyg/kernel/sema.hxx>
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#include <cyg/kernel/thread.hxx>
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#include <cyg/infra/testcase.h>
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#include <cyg/kernel/clock.inl>
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#include <cyg/kernel/thread.inl>
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#ifdef CYGVAR_KERNEL_COUNTERS_CLOCK
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#include <cyg/infra/diag.h>
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#define NTHREADS 1
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#include "testaux.hxx"
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#ifdef RUNFOREVER
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#define ENDPOINT 8192
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#else
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#define ENDPOINT 20
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#endif
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static cyg_alarm_fn alarmfunc;
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static void alarmfunc( Cyg_Alarm *alarm, CYG_ADDRWORD data )
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{
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Cyg_Binary_Semaphore *sp = (Cyg_Binary_Semaphore *)data;
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sp->post();
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}
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static void entry0( CYG_ADDRWORD data )
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{
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cyg_uint32 now, then;
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int i;
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Cyg_Clock *rtc = Cyg_Clock::real_time_clock;
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Cyg_Binary_Semaphore sema;
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Cyg_Alarm alarm( rtc, &alarmfunc, (CYG_ADDRWORD)&sema );
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// First, print 100 lines as fast as you can, of distinct ticks.
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for ( i = 0; i < 100; i++ ) {
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now = rtc->current_value_lo();
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then = now;
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while ( then == now )
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now = rtc->current_value_lo();
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diag_printf( "INFO<time now %8d>\n", now );
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}
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diag_printf( "INFO<per-second times are: %8d>\n", rtc->current_value_lo() );
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for ( i = 0; i < 20; i++ ) {
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Cyg_Thread::counted_sleep( 100 );
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diag_printf( "INFO<per-second time %2d is %8d>\n",
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i, rtc->current_value_lo() );
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}
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alarm.initialize( rtc->current_value() + 100, 100 );
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alarm.enable();
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for ( i = 0; i < ENDPOINT; i++ ) {
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sema.wait();
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diag_printf( "INFO<alarm time %2d is %8d>\n",
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i, rtc->current_value_lo() );
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}
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CYG_TEST_PASS_FINISH("Clock truth OK");
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}
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void clocktruth_main( void )
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{
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CYG_TEST_INIT();
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new_thread(entry0, (CYG_ADDRWORD)&thread_obj[0]);
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Cyg_Scheduler::start();
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}
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externC void
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cyg_start( void )
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{
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#ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG
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cyg_hal_invoke_constructors();
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#endif
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clocktruth_main();
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}
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#else // def CYGVAR_KERNEL_COUNTERS_CLOCK
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externC void
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cyg_start( void )
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{
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CYG_TEST_INIT();
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CYG_TEST_NA( "Kernel real-time clock disabled");
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}
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#endif // def CYGVAR_KERNEL_COUNTERS_CLOCK
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// EOF clocktruth.cxx
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