diff options
Diffstat (limited to 'cpukit/libtest/t-test-thread-switch.c')
| -rw-r--r-- | cpukit/libtest/t-test-thread-switch.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/cpukit/libtest/t-test-thread-switch.c b/cpukit/libtest/t-test-thread-switch.c new file mode 100644 index 0000000000..6457bbfd06 --- /dev/null +++ b/cpukit/libtest/t-test-thread-switch.c @@ -0,0 +1,165 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ + +/** + * @file + * + * @ingroup RTEMSTestFrameworkImpl + * + * @brief Implementation of T_thread_switch_record(). + */ + +/* + * Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de) + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <rtems/test.h> + +#include <rtems.h> +#include <rtems/score/percpu.h> +#include <rtems/score/smp.h> +#include <rtems/score/thread.h> +#include <rtems/score/userextimpl.h> + +typedef struct { + RTEMS_INTERRUPT_LOCK_MEMBER(lock) + T_thread_switch_log *active; + User_extensions_Control ext; + T_fixture_node node; +} T_thread_switch_context; + +static void T_thread_switch_recorder(Thread_Control *, Thread_Control *); + +static T_thread_switch_context T_thread_switch_instance = { +#ifdef RTEMS_SMP + .lock = RTEMS_INTERRUPT_LOCK_INITIALIZER("Test Thread Switches"), +#endif + .ext = { + .Callouts = { + .thread_switch = T_thread_switch_recorder + } + } +}; + +static void +T_thread_switch_teardown(void *arg) +{ + T_thread_switch_context *ctx; + + ctx = arg; + _User_extensions_Remove_set(&ctx->ext); +} + +static const T_fixture T_thread_switch_fixture = { + .teardown = T_thread_switch_teardown, + .initial_context = &T_thread_switch_instance +}; + +static void +T_thread_switch_recorder(Thread_Control *executing, Thread_Control *heir) +{ + rtems_interrupt_lock_context lock_context; + T_thread_switch_context *ctx; + T_thread_switch_log *log; + + ctx = &T_thread_switch_instance; + +#ifdef RTEMS_SMP + if (ctx->active == NULL) { + return; + } +#endif + + rtems_interrupt_lock_acquire_isr(&ctx->lock, &lock_context); + log = ctx->active; + + if (log != NULL) { + size_t recorded; + + ++log->switches; + recorded = log->recorded; + + if (recorded < log->capacity) { + log->recorded = recorded + 1; + log->events[recorded].executing = executing->Object.id; + log->events[recorded].heir = heir->Object.id; + log->events[recorded].cpu = + _SMP_Get_current_processor(); + log->events[recorded].instant = T_now(); + } + } + + rtems_interrupt_lock_release_isr(&ctx->lock, &lock_context); +} + +T_thread_switch_log * +T_thread_switch_record(T_thread_switch_log *log) +{ + rtems_interrupt_lock_context lock_context; + T_thread_switch_log *previous; + T_thread_switch_context *ctx; + + ctx = &T_thread_switch_instance; + + if (ctx->node.fixture == NULL) { + _User_extensions_Add_set(&ctx->ext); + T_push_fixture(&ctx->node, &T_thread_switch_fixture); + } + + if (log != NULL) { + log->recorded = 0; + log->switches = 0; + } + + rtems_interrupt_lock_acquire(&ctx->lock, &lock_context); + previous = ctx->active; + ctx->active = log; + rtems_interrupt_lock_release(&ctx->lock, &lock_context); + + return previous; +} + +T_thread_switch_log * +T_thread_switch_record_2(T_thread_switch_log_2 *log) +{ + log->log.capacity = 2; + return T_thread_switch_record(&log->log); +} + +T_thread_switch_log * +T_thread_switch_record_4(T_thread_switch_log_4 *log) +{ + log->log.capacity = 4; + return T_thread_switch_record(&log->log); +} + +T_thread_switch_log * +T_thread_switch_record_10(T_thread_switch_log_10 *log) +{ + log->log.capacity = 10; + return T_thread_switch_record(&log->log); +} |