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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [io/] [wallclock/] [v2_0/] [tests/] [wallclock.cxx] - Rev 584
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//========================================================================== // // wallclock.cxx // // WallClock test // //========================================================================== //####ECOSGPLCOPYRIGHTBEGIN#### // ------------------------------------------- // This file is part of eCos, the Embedded Configurable Operating System. // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, 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., // 59 Temple Place, Suite 330, Boston, MA 02111-1307 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. // // This exception does not invalidate any other reasons why a work based on // this file might be covered by the GNU General Public License. // // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. // at http://sources.redhat.com/ecos/ecos-license/ // ------------------------------------------- //####ECOSGPLCOPYRIGHTEND#### //========================================================================== //#####DESCRIPTIONBEGIN#### // // Author(s): nickg // Contributors: nickg // Date: 1998-07-20 // Description: Tests the Kernel Wall Clock // This test exercises the WallClock class and checks that it // keeps time correctly. //####DESCRIPTIONEND#### // ------------------------------------------------------------------------- #include <pkgconf/hal.h> #include <pkgconf/kernel.h> #include <cyg/kernel/thread.hxx> #include <cyg/kernel/thread.inl> #include <cyg/kernel/sched.hxx> #include <cyg/kernel/mutex.hxx> #include <cyg/kernel/sema.hxx> #include <cyg/kernel/clock.hxx> #include <cyg/kernel/diag.h> #include <cyg/io/wallclock.hxx> // The WallClock API #include <cyg/infra/testcase.h> #if defined(CYGFUN_KERNEL_THREADS_TIMER) && \ defined(CYGVAR_KERNEL_COUNTERS_CLOCK) #include <cyg/kernel/sched.inl> // ------------------------------------------------------------------------- // Data for the test #ifdef CYGNUM_HAL_STACK_SIZE_TYPICAL #define STACKSIZE CYGNUM_HAL_STACK_SIZE_TYPICAL #else #define STACKSIZE (2*1024) // size of thread stack #endif char thread_stack[STACKSIZE]; inline void *operator new(size_t size, void *ptr) { return ptr; }; // array of threads. char thread[sizeof(Cyg_Thread)]; Cyg_Thread *th; // MN10300 sim takes 1min15secs to do one loop on 300MHz PII. #define LOOPS_SIM 2 #define LOOPS_HW 10 cyg_int32 loops = LOOPS_HW; cyg_tick_count one_sec; // ------------------------------------------------------------------------- // Thread body void wallclock_thread( CYG_ADDRWORD id ) { cyg_uint32 base; cyg_uint32 wtime; cyg_tick_count ticks; CYG_TEST_INFO("Testing accuracy of wallclock (10 seconds silence)"); // Check clock only every other second since the call itself may // take about a second. // Start by synchronizing to next wallclock increment, then wait for // a bit to get away from the exact time of the increment (or minor // inaccuracies in the HW clock will cause failures). wtime = Cyg_WallClock::wallclock->get_current_time(); do { base = Cyg_WallClock::wallclock->get_current_time(); } while (base == wtime); th->delay( one_sec/10 ); for( int i = 0; i < loops; i += 2 ) { // Make a note of the time ticks = Cyg_Clock::real_time_clock->current_value(); wtime = Cyg_WallClock::wallclock->get_current_time(); if(wtime != base+i) { diag_printf("offset %d, read %d, expected %d\n", i, wtime, base+i); CYG_TEST_FAIL_FINISH( "Clock out of sync" ); } // then calculate how much the above took so the delay // below can be made accurate. ticks = Cyg_Clock::real_time_clock->current_value() - ticks; th->delay( 2*one_sec - ticks ); } if ( ! cyg_test_is_simulator ) { CYG_TEST_INFO("Tick output. Two seconds between each output."); // Start by synchronizing to next wallclock increment, then // wait for a bit to get away from the exact time of the // increment (or minor inaccuracies in the HW clock will cause // failures). wtime = Cyg_WallClock::wallclock->get_current_time(); do { base = Cyg_WallClock::wallclock->get_current_time(); } while (base == wtime); th->delay( one_sec/10 ); for( int i = 0; i < loops; i += 2 ) { // Make a note of the time ticks = Cyg_Clock::real_time_clock->current_value(); wtime = Cyg_WallClock::wallclock->get_current_time(); if(wtime != base+i) { diag_printf("wallclock drift: saw %d expected %d\n", wtime, base+i); } CYG_TEST_STILL_ALIVE(i, "2xtick..."); // then calculate how much the above took so the delay // below can be made accurate. ticks = Cyg_Clock::real_time_clock->current_value() - ticks; th->delay( 2*one_sec - ticks ); } } CYG_TEST_PASS_FINISH("Wallclock OK"); } // ------------------------------------------------------------------------- #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 CYG_TEST_INIT(); // Dont run this test if we are in a simulator, it just takes far too long. if( cyg_test_is_simulator ) CYG_TEST_NA("Wallclock test takes too long in simulators"); CYG_TEST_INFO("Starting wallclock test"); Cyg_Clock::cyg_resolution res = Cyg_Clock::real_time_clock->get_resolution(); one_sec = ( res.divisor * 1000000000LL ) / res.dividend ; th = new((void *)&thread) Cyg_Thread(CYG_SCHED_DEFAULT_INFO, wallclock_thread, 0, "wallclock_thread", (CYG_ADDRESS)thread_stack, STACKSIZE ); th->resume(); // Get the world going Cyg_Scheduler::scheduler.start(); } #else // if defined(CYGFUN_KERNEL_THREADS_TIMER) etc... externC void cyg_start( void ) { CYG_TEST_INIT(); CYG_TEST_NA("Kernel real-time clock/threads timer disabled"); } #endif // if defined(CYGFUN_KERNEL_THREADS_TIMER) etc... // ------------------------------------------------------------------------- // EOF wallclock.cxx
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