diff packages/io/watchdog/current/tests/watchdog2.cxx @ 94:4642a6d35749 ecos-sw-2000-06-02

Merge from eCos master repository on 2000-06-02-07:47:04-BST
author jlarmour
date Fri, 02 Jun 2000 17:35:00 +0000
parents
children e0c0827131d1
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+//==========================================================================
+//
+//        watchdog2.cxx
+//
+//        Watchdog test
+//
+//==========================================================================
+//####COPYRIGHTBEGIN####
+//                                                                          
+// -------------------------------------------                              
+// The contents of this file are subject to the Red Hat eCos Public License 
+// Version 1.1 (the "License"); you may not use this file except in         
+// compliance with the License.  You may obtain a copy of the License at    
+// http://www.redhat.com/                                                   
+//                                                                          
+// Software distributed under the License is distributed on an "AS IS"      
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the 
+// License for the specific language governing rights and limitations under 
+// the License.                                                             
+//                                                                          
+// The Original Code is eCos - Embedded Configurable Operating System,      
+// released September 30, 1998.                                             
+//                                                                          
+// The Initial Developer of the Original Code is Red Hat.                   
+// Portions created by Red Hat are                                          
+// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.                             
+// All Rights Reserved.                                                     
+// -------------------------------------------                              
+//                                                                          
+//####COPYRIGHTEND####
+//==========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):     nickg
+// Contributors:  nickg, jskov
+// Date:          1998-07-20
+// Description:   Tests the watchdog driver.
+//                This test tries to make sure the watchdog does not trigger
+//                early. On boards where the watchdog performs a reset on
+//                timeout, there will be no FAIL message - but it should
+//                PASS even on those boards when the driver implementation
+//                is correct.
+//
+//####DESCRIPTIONEND####
+// -------------------------------------------------------------------------
+
+#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/watchdog.hxx>
+
+#include <cyg/infra/testcase.h>
+#include <cyg/infra/diag.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;
+
+//cyg_tick_count one_sec;
+cyg_tick_count watchdog_delay;
+volatile bool watchdog_fired;
+volatile cyg_tick_count watchdog_time;
+
+#define WATCHDOG_CYCLES_PER_LOOP_HW     7
+#define WATCHDOG_CYCLES_PER_LOOP_SIM    2
+#define WATCHDOG_TICKS_TILL_TIMEOUT     10
+
+// -------------------------------------------------------------------------
+// Action functions:
+
+#ifdef CYGINT_WATCHDOG_RESETS_ON_TIMEOUT
+void watchdog_action1( CYG_ADDRWORD data )
+{
+    watchdog_fired = true;
+    watchdog_time = Cyg_Clock::real_time_clock->current_value();
+}
+#endif
+
+// -------------------------------------------------------------------------
+// Thread body
+
+void watchdog_thread( CYG_ADDRWORD id )
+{
+    cyg_tick_count watchdog_start_time;
+    cyg_tick_count thread_start_time, thread_end_time;
+    cyg_ucount8 watchdog_cycles_per_loop;
+
+    if (cyg_test_is_simulator) {
+        watchdog_cycles_per_loop = WATCHDOG_CYCLES_PER_LOOP_SIM;
+    } else {
+        watchdog_cycles_per_loop = WATCHDOG_CYCLES_PER_LOOP_HW;
+    }
+
+    CYG_TEST_INFO("Testing that watchdog does not fire early");
+
+    watchdog_fired = false;
+    Cyg_Watchdog::watchdog.start();
+
+#ifdef CYGINT_WATCHDOG_RESETS_ON_TIMEOUT
+    // First test that the watchdog does not trigger when being reset.
+    Cyg_Watchdog_Action wdaction( watchdog_action1, 0 );
+    wdaction.install();
+#endif
+    Cyg_Watchdog::watchdog.reset();
+
+    watchdog_start_time = Cyg_Clock::real_time_clock->current_value();
+    watchdog_fired = false;
+        
+    for( cyg_ucount8 i = 0; i < watchdog_cycles_per_loop; i++ ) {
+        thread_start_time = Cyg_Clock::real_time_clock->current_value();
+        th->delay( watchdog_delay-2 );
+        Cyg_Watchdog::watchdog.reset();
+        if (watchdog_fired) {
+            thread_end_time = Cyg_Clock::real_time_clock->current_value();
+            diag_printf("Watchdog fired prematurely after %d ticks\n", 
+                        (int)(watchdog_time - watchdog_start_time));
+            diag_printf("  Thread slept for %d ticks, loop #%d\n", 
+                        (int)(thread_end_time - thread_start_time), i);
+            CYG_TEST_FAIL_FINISH("Watchdog triggered unexpectedly");
+            break;
+        } else {
+            // No printing - delays are fatal!
+            // CYG_TEST_STILL_ALIVE(i, "Resetting watchdog...");
+            Cyg_Watchdog::watchdog.reset();
+            watchdog_fired = false;
+            watchdog_start_time = Cyg_Clock::real_time_clock->current_value();
+        }
+    }
+
+    CYG_TEST_PASS_FINISH("Watchdog OK");    
+}
+
+// -------------------------------------------------------------------------
+
+    
+externC void
+cyg_start( void )
+{
+    CYG_TEST_INIT();
+
+#if !defined(CYGIMP_WATCHDOG_EMULATE) && defined(CYGPKG_HAL_MN10300_STDEVAL1)
+    // Workaround for PR 17974
+    if( cyg_test_is_simulator )
+        CYG_TEST_NA("Watchdog device not implemented in MN10300 simulator.");
+#endif
+
+
+    Cyg_Clock::cyg_resolution res = Cyg_Clock::real_time_clock->get_resolution();
+    
+    cyg_uint64 wres = Cyg_Watchdog::watchdog.get_resolution();
+
+    // Calculate how many clock ticks there are in a watchdog cycle.
+    
+    watchdog_delay = ((cyg_tick_count)wres * (cyg_tick_count)res.divisor );
+    watchdog_delay /= res.dividend;
+    
+    th = new((void *)&thread) Cyg_Thread(CYG_SCHED_DEFAULT_INFO,
+                                         watchdog_thread,
+                                         0,
+                                         "watchdog_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 watchdog.cxx