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https://github.com/QuantumLeaps/qpcpp.git
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80d9bcd6fb
Added QP Functional Safety (FuSa) Subsystem Memory Isolation with MPU Added QAsm abstract state machine base class Added memory marker to QEvt and rearranged memory layout Updated: QP-FreeRTOS, QP-ESP-IDF,QP-Zephyr Added drift-free ticking for QP-POSIX Reorganized documentation Updated 3rd_party
111 lines
4.0 KiB
C++
111 lines
4.0 KiB
C++
//============================================================================
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// QXThread example
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// Last updated for version 7.3.0
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// Last updated on 2023-08-12
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//
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// Q u a n t u m L e a P s
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// ------------------------
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// Modern Embedded Software
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//
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// Copyright (C) 2005 Quantum Leaps, LLC. <state-machine.com>
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//
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// This program is open source software: you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as published
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// by the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Alternatively, this program may be distributed and modified under the
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// terms of Quantum Leaps commercial licenses, which expressly supersede
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// the GNU General Public License and are specifically designed for
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// licensees interested in retaining the proprietary status of their code.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <www.gnu.org/licenses/>.
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//
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// Contact information:
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// <www.state-machine.com/licensing>
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// <info@state-machine.com>
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//============================================================================
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#include "qpcpp.hpp" // QP/C++ real-time embedded framework
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#include "dpp.hpp" // DPP Application interface
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#include "bsp.hpp" // Board Support Package
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//----------------------------------------------------------------------------
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// unnamed namespace for local definitions with internal linkage
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namespace {
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//Q_DEFINE_THIS_FILE
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} // unnamed namespace
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//----------------------------------------------------------------------------
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namespace APP {
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//............................................................................
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QP::QXSemaphore TH_sema;
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QP::QXMutex TH_mutex;
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//............................................................................
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class XThread2 : public QP::QXThread {
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private:
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// NOTE: data needed by this thread should be members of
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// the thread class. That way they are in the memory region
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// accessible from this thread.
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std::uint8_t m_foo;
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public:
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static XThread2 inst;
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XThread2();
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private:
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static void run(QP::QXThread * const thr);
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}; // class XThread2
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//............................................................................
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QP::QXThread * const TH_XThread2 = &XThread2::inst;
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XThread2 XThread2::inst;
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XThread2::XThread2()
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: QXThread(&run)
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{}
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//............................................................................
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void XThread2::run(QP::QXThread * const thr) {
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// downcast the generic thr pointer to the specific thread
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//auto me = static_cast<XThread2 *>(thr);
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QS_OBJ_DICTIONARY(TH_XThread2);
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QS_OBJ_DICTIONARY(TH_XThread2->getTimeEvt());
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QS_OBJ_DICTIONARY(&TH_sema);
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QS_OBJ_DICTIONARY(&TH_mutex);
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// initialize the semaphore before using it
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// NOTE: Here the semaphore is initialized in the highest-priority thread
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// that uses it. Alternatively, the semaphore can be initialized
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// before any thread runs.
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TH_sema.init(0U, // count==0 (signaling semaphore)
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1U); // max_count==1 (binary semaphore)
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// initialize the mutex before using it
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// NOTE: Here the mutex is initialized in the highest-priority thread
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// that uses it. Alternatively, the mutex can be initialized
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// before any thread runs.
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TH_mutex.init(APP::N_PHILO + 6U); // priority-ceiling mutex
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//l_mutex.init(0U); // alternatively: priority-ceiling NOT used
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for (;;) {
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// wait on a semaphore (BLOCK indefinitely)
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TH_sema.wait();
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TH_mutex.lock(QP::QXTHREAD_NO_TIMEOUT); // lock the mutex
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QP::QXThread::delay(5U); // wait more (BLOCK)
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TH_mutex.unlock();
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}
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}
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} // namespace APP
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