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/***************************************************************************/
/* Copyright (c) 2024 Microsoft Corporation */
/* Copyright (c) 2026 Eclipse ThreadX contributors */
/* */
/* This program and the accompanying materials are made available under */
/* the terms of the MIT License which is available at */
/* https://opensource.org/licenses/MIT. */
/* */
/* SPDX-License-Identifier: MIT */
/***************************************************************************/
/* This test is designed to see if two threads can be created and execute with a time-slice.
Thread 7 should run twice as long because it has more of a time-slice. */
#include <stdio.h>
#include "tx_api.h"
static volatile unsigned long thread_0_counter = 0;
static TX_THREAD thread_0;
static volatile unsigned long thread_1_counter = 0;
static TX_THREAD thread_1;
static volatile unsigned long thread_2_counter = 0;
static TX_THREAD thread_2;
#ifndef TX_DISABLE_PREEMPTION_THRESHOLD
static volatile unsigned long thread_3_counter = 0;
static TX_THREAD thread_3;
static volatile unsigned long thread_4_counter = 0;
static TX_THREAD thread_4;
#endif
/* Define thread prototypes. */
static void thread_0_entry(ULONG thread_input);
static void thread_1_entry(ULONG thread_input);
static void thread_2_entry(ULONG thread_input);
#ifndef TX_DISABLE_PREEMPTION_THRESHOLD
static void thread_3_entry(ULONG thread_input);
static void thread_4_entry(ULONG thread_input);
#endif
/* Prototype for test control return. */
void test_control_return(UINT status);
/* Define what the initial system looks like. */
#ifdef CTEST
void test_application_define(void *first_unused_memory)
#else
void threadx_thread_multiple_time_slice_application_define(void *first_unused_memory)
#endif
{
UINT status;
CHAR *pointer;
/* Put first available memory address into a character pointer. */
pointer = (CHAR *) first_unused_memory;
/* Put system definition stuff in here, e.g. thread creates and other assorted
create information. */
status = tx_thread_create(&thread_0, "thread 0", thread_0_entry, 1,
pointer, TEST_STACK_SIZE_PRINTF,
16, 16, 2, TX_AUTO_START);
pointer = pointer + TEST_STACK_SIZE_PRINTF;
/* Check for status. */
if (status != TX_SUCCESS)
{
printf("Running Thread Multiple Thread Time-Slice Test...................... ERROR #1\n");
test_control_return(1);
}
status = tx_thread_create(&thread_1, "thread 1", thread_1_entry, 1,
pointer, TEST_STACK_SIZE_PRINTF,
16, 16, 4, TX_AUTO_START);
pointer = pointer + TEST_STACK_SIZE_PRINTF;
/* Check for status. */
if (status != TX_SUCCESS)
{
printf("Running Thread Multiple Thread Time-Slice Test...................... ERROR #2\n");
test_control_return(1);
}
/* Create control thread. */
status = tx_thread_create(&thread_2, "thread 2", thread_2_entry, 1,
pointer, TEST_STACK_SIZE_PRINTF,
15, 15, TX_NO_TIME_SLICE, TX_AUTO_START);
pointer = pointer + TEST_STACK_SIZE_PRINTF;
/* Check for status. */
if (status != TX_SUCCESS)
{
printf("Running Thread Multiple Thread Time-Slice Test...................... ERROR #3\n");
test_control_return(1);
}
#ifndef TX_DISABLE_PREEMPTION_THRESHOLD
/* Create threads with preemption-threshold and time-slice, such and make sure time-slice is defeated by
preemption-threshold. */
status = tx_thread_create(&thread_3, "thread 3", thread_3_entry, 3,
pointer, TEST_STACK_SIZE_PRINTF,
18, 17, 2, TX_AUTO_START);
pointer = pointer + TEST_STACK_SIZE_PRINTF;
/* Check for status. */
if (status != TX_SUCCESS)
{
printf("Running Thread Multiple Thread Time-Slice Test...................... ERROR #4\n");
test_control_return(1);
}
status = tx_thread_create(&thread_4, "thread 4", thread_4_entry, 4,
pointer, TEST_STACK_SIZE_PRINTF,
18, 18, 4, TX_AUTO_START);
pointer = pointer + TEST_STACK_SIZE_PRINTF;
/* Check for status. */
if (status != TX_SUCCESS)
{
printf("Running Thread Multiple Thread Time-Slice Test...................... ERROR #5\n");
test_control_return(1);
}
#endif
}
/* Define the test threads. */
static void thread_0_entry(ULONG thread_input)
{
/* Enter into a forever loop. */
while(1)
{
/* Increment thread 0 counter. */
thread_0_counter++;
/* Call thread identify for Win32 test case. */
tx_thread_identify();
}
}
static void thread_1_entry(ULONG thread_input)
{
/* Enter into a forever loop. */
while(1)
{
/* Increment thread 1 counter. */
thread_1_counter++;
/* Call thread identify for Win32 test case. */
tx_thread_identify();
}
}
static void thread_2_entry(ULONG thread_input)
{
unsigned long counter_sum;
#ifndef TX_DISABLE_PREEMPTION_THRESHOLD
UINT status;
#endif
/* Inform user. */
printf("Running Thread Multiple Thread Time-Slice Test...................... ");
/* Sleep for some multiple of 6. */
tx_thread_sleep(48);
/* Increment thread 2 counter. */
thread_2_counter++;
/* Compute the delta. Should be twice as much, but some test environments (Windows/Linux) are
not as good in terms of real time processing. */
counter_sum = thread_0_counter;
counter_sum = counter_sum + (thread_0_counter/4);
if (thread_1_counter <= counter_sum)
{
/* Thread Time-slice error. */
printf("ERROR #6\n");
test_control_return(1);
}
#ifdef TX_DISABLE_PREEMPTION_THRESHOLD
else
{
/* Successful Thread Time-slice test. */
printf("SUCCESS!\n");
test_control_return(0);
}
#else
/* Now suspend threads 0 and 1 so we can let 3 and 4 run. */
status = tx_thread_suspend(&thread_0);
status += tx_thread_suspend(&thread_1);
/* Check status. */
if (status)
{
/* Thread Time-slice error. */
printf("ERROR #7\n");
test_control_return(1);
}
/* Now sleep and see if thread 4 ever runs. */
tx_thread_sleep(4);
/* Determine if thread 3 ran and thread 4 didn't. */
if ((thread_3_counter) && (thread_4_counter == 0))
{
/* Successful Thread Time-slice test. */
printf("SUCCESS!\n");
test_control_return(0);
}
else
{
/* Thread Time-slice error. */
printf("ERROR #8\n");
test_control_return(1);
}
#endif
}
#ifndef TX_DISABLE_PREEMPTION_THRESHOLD
/* Define the test threads. */
static void thread_3_entry(ULONG thread_input)
{
/* Enter into a forever loop. */
while(1)
{
/* Increment thread 3 counter. */
thread_3_counter++;
/* Call thread identify for Win32 test case. */
tx_thread_identify();
}
}
static void thread_4_entry(ULONG thread_input)
{
/* Enter into a forever loop. */
while(1)
{
/* We should never get here! */
/* Increment thread 4 counter. */
thread_4_counter++;
/* Call thread identify for Win32 test case. */
tx_thread_identify();
}
}
#endif
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