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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (C) 2022 Critical Software SA
*
* 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.h>
#include <rtems/bspIo.h>
#include "../shared/utils.h"
#include "../shared/isvv_rtems_aux.h"
/**
*
* @brief Demonstrate that tasks running in parallel will not execute on separate cores of the
* processor if the processor affinity is set to the same core for all tasks.
*
* This test case performs the calculation of the Mandelbrot set on 4 max cores, pinning to 0th core
*/
#define MAX_TLS_SIZE RTEMS_ALIGN_UP(64, RTEMS_TASK_STORAGE_ALIGNMENT)
#define TASK_ATTRIBUTES RTEMS_FLOATING_POINT
#define TASK_STORAGE_SIZE \
RTEMS_TASK_STORAGE_SIZE( \
MAX_TLS_SIZE + RTEMS_MINIMUM_STACK_SIZE, \
TASK_ATTRIBUTES)
#define ITOA_STR_SIZE (8 * sizeof(int) + 1)
// test specific global vars
#define TASK_COUNT ISVV_TEST_PROCESSORS
static rtems_id start_barrier;
static rtems_id TASK_COUNTER_SEMAPHORE;
typedef struct
{
rtems_id task_id[TASK_COUNT];
uint32_t processor[TASK_COUNT];
uint8_t tile[TASK_COUNT];
} test_context;
test_context ctx;
/* create storage areas for each worker, using task construct forces
the user to create these manually*/
RTEMS_ALIGNED(RTEMS_TASK_STORAGE_ALIGNMENT)
static char calc_task_storage[TASK_COUNT][TASK_STORAGE_SIZE];
static void calc_task_function(rtems_task_argument tile)
{
uint8_t tile_n = (uint8_t)tile;
/* Store tile and processor task is working on */
ctx.processor[tile-1] = rtems_scheduler_get_processor();
ctx.tile[tile-1] = tile_n;
// for some reason this loop is needed for the scheduler to distribute tasks to all the cores
Loop(4);
WaitAtBarrier(start_barrier);
mandelbrot_tile(tile_n, TASK_COUNT);
// Task has finished so increment counter
ReleaseCounterSemaphore(TASK_COUNTER_SEMAPHORE);
// Internal call necessary to free resources for next task processing
SuspendSelf();
}
static void Init(rtems_task_argument arg)
{
(void)arg;
uint32_t start_time, end_time, elapsed_time;
char ch;
char str[ITOA_STR_SIZE];
cpu_set_t cpuset;
uint8_t wait = 0;
TASK_COUNTER_SEMAPHORE = CreateCounterSemaphore(rtems_build_name('T', 'C', 'S', '0'), 0);
rtems_task_config calc_task_config = {
.name = rtems_build_name('R', 'U', 'N', ' '),
.initial_priority = 3,
.storage_size = TASK_STORAGE_SIZE,
.maximum_thread_local_storage_size = MAX_TLS_SIZE,
.initial_modes = RTEMS_DEFAULT_MODES,
.attributes = TASK_ATTRIBUTES};
start_barrier = CreateAutomaticBarrier(TASK_COUNT);
for (uint32_t i = 0; i < TASK_COUNT; i++)
{
ch = '0' + i;
calc_task_config.name = rtems_build_name('R', 'U', 'N', ch);
calc_task_config.storage_area = &calc_task_storage[i][0];
ctx.task_id[i] = DoCreateTask(calc_task_config);
CPU_ZERO(&cpuset);
CPU_SET(0, &cpuset);
rtems_task_set_affinity(ctx.task_id[i], sizeof(cpuset), &cpuset);
StartTask(ctx.task_id[i], calc_task_function, (void *)(i + 1));
}
start_time = rtems_clock_get_ticks_since_boot();
// Wait for all tasks to complete
while (wait < TASK_COUNT)
{
ObtainCounterSemaphore(TASK_COUNTER_SEMAPHORE);
wait++;
}
end_time = rtems_clock_get_ticks_since_boot();
elapsed_time = end_time - start_time;
for (uint32_t i = 0; i < TASK_COUNT; i++)
{
/* Identify tile and processor task worked on */
print_string("Processor-");
print_string(itoa(ctx.processor[i], &str[0], 10));
print_string(",Tile-");
print_string(itoa(ctx.tile[i], &str[0], 10));
print_string("\n");
}
print_string("\n");
print_string("Multicore Elapsed Time -");
print_string(itoa(elapsed_time, &str[0], 10));
print_string("\n");
print_test_results();
for (uint32_t i = 0; i < TASK_COUNT; i++)
{
DeleteTask(ctx.task_id[i]);
}
DeleteMutex(TASK_COUNTER_SEMAPHORE);
rtems_fatal(RTEMS_FATAL_SOURCE_EXIT, 0);
}
#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
#define CONFIGURE_MAXIMUM_PROCESSORS ISVV_TEST_PROCESSORS
#define CONFIGURE_MAXIMUM_SEMAPHORES 1
#define CONFIGURE_MAXIMUM_BARRIERS 1
#define CONFIGURE_MAXIMUM_TASKS ( ISVV_TEST_PROCESSORS + 1 )
#define CONFIGURE_SCHEDULER_EDF_SMP
#define CONFIGURE_MINIMUM_TASK_STACK_SIZE RTEMS_MINIMUM_STACK_SIZE + CPU_STACK_ALIGNMENT
#define CONFIGURE_EXTRA_TASK_STACKS RTEMS_MINIMUM_STACK_SIZE
#define CONFIGURE_IDLE_TASK_STORAGE_SIZE TASK_STORAGE_SIZE
#define CONFIGURE_INIT_TASK_CONSTRUCT_STORAGE_SIZE 2 * TASK_STORAGE_SIZE
#define CONFIGURE_MINIMUM_TASKS_WITH_USER_PROVIDED_STORAGE \
CONFIGURE_MAXIMUM_TASKS
#define CONFIGURE_MICROSECONDS_PER_TICK 1000
#define CONFIGURE_MAXIMUM_FILE_DESCRIPTORS 0
#define CONFIGURE_DISABLE_NEWLIB_REENTRANCY
#define CONFIGURE_APPLICATION_DISABLE_FILESYSTEM
#define CONFIGURE_MAXIMUM_THREAD_LOCAL_STORAGE_SIZE MAX_TLS_SIZE
#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
#define CONFIGURE_INIT_TASK_ATTRIBUTES (RTEMS_SYSTEM_TASK | TASK_ATTRIBUTES)
#define CONFIGURE_INIT_TASK_INITIAL_MODES RTEMS_DEFAULT_MODES
#define CONFIGURE_INIT
#include <rtems/confdefs.h>
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