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/***************************************************************************/
/* 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. */
/* */
/* AI Disclosure: This file was largely AI-generated by Claude Code */
/* (Opus 5). The AI-generated portions may be considered public domain */
/* (CC0-1.0) and not subject to the project's licence. The human */
/* contributor has reviewed and verified that the code is correct. */
/* */
/* SPDX-License-Identifier: MIT and CC0-1.0 */
/***************************************************************************/
/* This test covers basic pthread and synchronisation operation: a pthread runs
and reports its own identity, a mutex serialises access to shared state, a
semaphore signals between two pthreads, and a join collects the worker's exit
value. */
#include <stdio.h>
#include "tx_api.h"
/* The layer ships no semaphore.h; sem_t and the sem_* calls arrive through
pthread.h, which pulls in tx_posix.h. */
#include "pthread.h"
#define TEST_STACK_BYTES 4096
static ULONG posix_region[192 * 1024 / sizeof(ULONG)];
static pthread_t worker;
static pthread_attr_t worker_attr;
static pthread_t driver;
static pthread_attr_t driver_attr;
static pthread_mutex_t guard;
static sem_t handoff;
static volatile INT shared_counter;
static pthread_t worker_self_id;
static INT worker_result = 77;
extern void test_control_return(UINT status);
static VOID *worker_entry(VOID *input);
static VOID *driver_entry(VOID *input);
/* Define what the initial system looks like. */
#ifdef CTEST
void test_application_define(void *first_unused_memory)
#else
void posix_pthread_basic_application_define(void *first_unused_memory)
#endif
{
struct sched_param param;
VOID *storage_ptr;
(void) first_unused_memory;
storage_ptr = posix_initialize(posix_region);
if (pthread_mutex_init(&guard, NULL) != OK)
{
printf("Running POSIX Pthread Basic Test.................................. ERROR #1\n");
test_control_return(1);
}
if (sem_init(&handoff, 0, 0) != OK)
{
printf("Running POSIX Pthread Basic Test.................................. ERROR #2\n");
test_control_return(1);
}
/* The driver runs below the worker so that the worker reaches its first
blocking point before the driver inspects anything. */
pthread_attr_init(&worker_attr);
param.sched_priority = 15;
pthread_attr_setschedparam(&worker_attr, ¶m);
pthread_attr_setstackaddr(&worker_attr, storage_ptr);
storage_ptr = (ULONG *) storage_ptr + (TEST_STACK_BYTES / sizeof(ULONG));
pthread_attr_init(&driver_attr);
param.sched_priority = 10;
pthread_attr_setschedparam(&driver_attr, ¶m);
pthread_attr_setstackaddr(&driver_attr, storage_ptr);
if (pthread_create(&worker, &worker_attr, worker_entry, NULL) != OK)
{
printf("Running POSIX Pthread Basic Test.................................. ERROR #3\n");
test_control_return(1);
}
if (pthread_create(&driver, &driver_attr, driver_entry, NULL) != OK)
{
printf("Running POSIX Pthread Basic Test.................................. ERROR #4\n");
test_control_return(1);
}
}
static VOID *worker_entry(VOID *input)
{
INT i;
(void) input;
/* Record what this pthread believes its own ID to be, for the driver to
compare against the ID pthread_create() handed back. */
worker_self_id = pthread_self();
for (i = 0; i < 100; i++)
{
pthread_mutex_lock(&guard);
shared_counter++;
pthread_mutex_unlock(&guard);
}
/* Hand control to the driver. */
sem_post(&handoff);
return ((VOID *) &worker_result);
}
static VOID *driver_entry(VOID *input)
{
VOID *exit_value;
(void) input;
printf("Running POSIX Pthread Basic Test.................................. ");
/* Wait for the worker to finish its counting. */
if (sem_wait(&handoff) != OK)
{
printf("ERROR #5\n");
test_control_return(1);
}
if (shared_counter != 100)
{
printf("ERROR #6\n");
test_control_return(1);
}
if (worker_self_id != worker)
{
printf("ERROR #7\n");
test_control_return(1);
}
exit_value = NULL;
if (pthread_join(worker, &exit_value) != OK)
{
printf("ERROR #8\n");
test_control_return(1);
}
if (exit_value != (VOID *) &worker_result)
{
printf("ERROR #9\n");
test_control_return(1);
}
if (pthread_mutex_destroy(&guard) != OK)
{
printf("ERROR #10\n");
test_control_return(1);
}
printf("SUCCESS!\n");
test_control_return(0);
return (NULL);
}
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