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2d475b3dcd
On 8-bit and 16-bit platforms `uint32_t` is wider than `void *`, as
pointers are (typically) only 16 bit in size. This causes output like:
Message queue of thread 2
size: 8 (avail: 8)
* 0: sender: 2, type: 0x0000, content: 2701197312 (0)
* 1: sender: 2, type: 0x0001, content: 2701197313 (0x1)
As seen here, the leading two bytes of `msg.content.value` contain
"random" bits, as those bytes are not explicitly initialized.
This fixes the issue by explicitly initializing the whole `msg_t` via
an initializer list.
72 lines
1.4 KiB
C
72 lines
1.4 KiB
C
/*
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* Copyright (C) 2021 Freie Universität Berlin
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* Copyright (C) 2024 TU Dresden
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup tests
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* @{
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*
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* @file
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* @brief testing msg_queue_print
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*
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*
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* @author Julian Holzwarth <julian.holzwarth@fu-berlin.de>
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* @author Mikolai Gütschow <mikolai.guetschow@tu-dresden.de>
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*
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*/
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#include <stdio.h>
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#include <inttypes.h>
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#include "msg.h"
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#define QUEUE_SIZE 8
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msg_t msg_queue[QUEUE_SIZE];
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int main(void)
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{
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msg_t msg;
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msg_queue_print();
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msg_init_queue(msg_queue, QUEUE_SIZE);
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msg_queue_print();
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/* fill message queue */
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for (uintptr_t i = 0; i < QUEUE_SIZE; i++) {
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msg = (msg_t) {
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.type = i,
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.content.ptr = (void *)i,
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};
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msg_send_to_self(&msg);
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}
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msg_queue_print();
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/* drain half of message queue */
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for (uintptr_t i = 0; i < QUEUE_SIZE/2; i++) {
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msg_receive(&msg);
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}
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msg_queue_print();
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/* fill up message queue again */
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for (uintptr_t i = QUEUE_SIZE; i < QUEUE_SIZE + QUEUE_SIZE/2; i++) {
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msg = (msg_t) {
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.type = i,
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.content.ptr = (void *)i,
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};
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msg_send_to_self(&msg);
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}
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msg_queue_print();
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puts("DONE");
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return 0;
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}
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