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qpcpp.qm
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<?xml version="1.0" encoding="UTF-8"?>
<model version="7.0.0" links="1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://www.state-machine.com/qm/qm7.xsd">
<documentation>QP/C++ Real-Time Embedded Framework (RTEF)
This model is used to generate the whole QP/C++ source code.
Copyright (c) 2005 Quantum Leaps, LLC. All rights reserved.
Q u a n t u m L e a P s
------------------------
Modern Embedded Software
SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-QL-commercial
The QP/C++ software is dual-licensed under the terms of the open-source GNU
General Public License (GPL) or under the terms of one of the closed-
source Quantum Leaps commercial licenses.
Redistributions in source code must retain this top-level comment block.
Plagiarizing this software to sidestep the license obligations is illegal.
NOTE:
The GPL (see <www.gnu.org/licenses/gpl-3.0>) does NOT permit the
incorporation of the QP/C++ software into proprietary programs. Please
contact Quantum Leaps for commercial licensing options, which expressly
supersede the GPL and are designed explicitly for licensees interested
in using QP/C++ in closed-source proprietary applications.
Quantum Leaps contact information:
<www.state-machine.com/licensing>
<info@state-machine.com></documentation>
<!--${qpcpp}-->
<framework name="qpcpp">
<license name="LicenseRef-QL-dual">public
qpcpp
2025-12-31
Copyright (C) 2005 Quantum Leaps, LLC. All rights reserved.
Q u a n t u m L e a P s
------------------------
Modern Embedded Software
SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-QL-commercial
The QP/C++ software is dual-licensed under the terms of the open-source
GNU General Public License (GPL) or under the terms of one of the closed-
source Quantum Leaps commercial licenses.
Redistributions in source code must retain this top-level comment block.
Plagiarizing this software to sidestep the license obligations is illegal.
NOTE:
The GPL does NOT permit the incorporation of this code into proprietary
programs. Please contact Quantum Leaps for commercial licensing options,
which expressly supersede the GPL and are designed explicitly for
closed-source distribution.
Quantum Leaps contact information:
<www.state-machine.com/licensing>
<info@state-machine.com>
#48B37CF39D4FD9DE279250B31FD388AFD0BE9B40</license>
</framework>
<!--${glob-types}-->
<package name="glob-types" stereotype="0x00">
<!--${glob-types::int_t}-->
<attribute name="int_t" type="using" visibility="0x04" properties="0x00">
<code> = int;</code>
</attribute>
<!--${glob-types::enum_t}-->
<attribute name="enum_t" type="using" visibility="0x04" properties="0x00">
<code> = int;</code>
</attribute>
<!--${glob-types::float32_t}-->
<attribute name="float32_t" type="using" visibility="0x04" properties="0x00">
<code> = float;</code>
</attribute>
<!--${glob-types::float64_t}-->
<attribute name="float64_t" type="using" visibility="0x04" properties="0x00">
<code> = double;</code>
</attribute>
</package>
<!--${QEP}-->
<package name="QEP" stereotype="0x05" namespace="QP::">
<!--${QEP::versionStr[]}-->
<attribute name="versionStr[]" type="constexpr char const" visibility="0x04" properties="0x01">
<documentation>//! the current QP version number string in ROM, based on #QP_VERSION_STR</documentation>
<code>{QP_VERSION_STR};</code>
</attribute>
<!--${QEP::QSignal}-->
<attribute name="QSignal? (Q_SIGNAL_SIZE == 1U)" type="using" visibility="0x04" properties="0x00">
<code>= std::uint8_t;</code>
</attribute>
<!--${QEP::QSignal}-->
<attribute name="QSignal? (Q_SIGNAL_SIZE == 2U)" type="using" visibility="0x04" properties="0x00">
<code>= std::uint16_t;</code>
</attribute>
<!--${QEP::QSignal}-->
<attribute name="QSignal? (Q_SIGNAL_SIZE == 4U)" type="using" visibility="0x04" properties="0x00">
<code>= std::uint32_t;</code>
</attribute>
<!--${QEP::QEvt}-->
<class name="QEvt">
<!--${QEP::QEvt::sig}-->
<attribute name="sig" type="QSignal" visibility="0x00" properties="0x00"/>
<!--${QEP::QEvt::evtTag_}-->
<attribute name="evtTag_" type="std::uint8_t" visibility="0x00" properties="0x00"/>
<!--${QEP::QEvt::refCtr_}-->
<attribute name="refCtr_" type="std::uint8_t volatile" visibility="0x00" properties="0x00"/>
<!--${QEP::QEvt::DynEvt}-->
<attribute name="DynEvt" type="enum" visibility="0x04" properties="0x00">
<code>: std::uint8_t { DYNAMIC };</code>
</attribute>
<!--${QEP::QEvt::QEvt}-->
<operation name="QEvt" type="explicit constexpr" visibility="0x00" properties="0x02">
<specifiers>noexcept</specifiers>
<!--${QEP::QEvt::QEvt::s}-->
<parameter name="s" type="QSignal const"/>
<code> : sig(s),
evtTag_(0x01U),
refCtr_(0x0EU)</code>
</operation>
<!--${QEP::QEvt::QEvt}-->
<operation name="QEvt" type="" visibility="0x00" properties="0x00">
<specifiers>= delete</specifiers>
</operation>
<!--${QEP::QEvt::init}-->
<operation name="init" type="void" visibility="0x00" properties="0x02">
<specifiers>noexcept</specifiers>
<code>// no event parameters to initialize</code>
</operation>
<!--${QEP::QEvt::init}-->
<operation name="init" type="void" visibility="0x00" properties="0x02">
<specifiers>noexcept</specifiers>
<!--${QEP::QEvt::init::dummy}-->
<parameter name="dummy" type="DynEvt const"/>
<code>static_cast<void>(dummy);
// no event parameters to initialize</code>
</operation>
<!--${QEP::QEvt::verify_}-->
<operation name="verify_" type="bool" visibility="0x00" properties="0x02">
<specifiers>const noexcept</specifiers>
<code>std::uint8_t rc = refCtr_;
return (rc <= 2U*QF_MAX_ACTIVE)
&& (((evtTag_ ^ rc) & 0x0FU) == 0x0FU);</code>
</operation>
<!--${QEP::QEvt::getPoolNum_}-->
<operation name="getPoolNum_" type="std::uint_fast8_t" visibility="0x00" properties="0x02">
<specifiers>const noexcept</specifiers>
<code>return static_cast<std::uint8_t>(evtTag_ >> 4U);</code>
</operation>
</class>
<!--${QEP::QState}-->
<attribute name="QState" type="using" visibility="0x04" properties="0x00">
<code>= std::uint_fast8_t;</code>
</attribute>
<!--${QEP::QStateHandler}-->
<attribute name="QStateHandler" type="using" visibility="0x04" properties="0x00">
<code>= QState (*)(void * const me, QEvt const * const e);</code>
</attribute>
<!--${QEP::QActionHandler}-->
<attribute name="QActionHandler" type="using" visibility="0x04" properties="0x00">
<code>= QState (*)(void * const me);</code>
</attribute>
<!--${QEP::QXThread}-->
<attribute name="QXThread" type="class" visibility="0x04" properties="0x00">
<documentation>// forward declaration</documentation>
</attribute>
<!--${QEP::QXThreadHandler}-->
<attribute name="QXThreadHandler" type="using" visibility="0x04" properties="0x00">
<code>= void (*)(QXThread * const me);</code>
</attribute>
<!--${QEP::QMState}-->
<attribute name="QMState" type="struct" visibility="0x04" properties="0x00">
<code>{
QMState const *superstate;
QStateHandler const stateHandler;
QActionHandler const entryAction;
QActionHandler const exitAction;
QActionHandler const initAction;
};</code>
</attribute>
<!--${QEP::QMTranActTable}-->
<attribute name="QMTranActTable" type="struct" visibility="0x04" properties="0x00">
<code>{
QMState const *target;
QActionHandler const act[1];
};</code>
</attribute>
<!--${QEP::QAsmAttr}-->
<attribute name="QAsmAttr" type="union" visibility="0x04" properties="0x00">
<code>{
QStateHandler fun;
QActionHandler act;
QXThreadHandler thr;
QMState const *obj;
QMTranActTable const *tatbl;
#ifndef Q_UNSAFE
std::uintptr_t uint;
#endif
constexpr QAsmAttr() : fun(nullptr) {}
};</code>
</attribute>
<!--${QEP::Q_USER_SIG}-->
<attribute name="Q_USER_SIG" type="constexpr enum_t " visibility="0x04" properties="0x00">
<code>{4};</code>
</attribute>
<!--${QEP::QAsm}-->
<class name="QAsm">
<documentation>Abstract State Machine</documentation>
<!--${QEP::QAsm::m_state}-->
<attribute name="m_state" type="QAsmAttr" visibility="0x01" properties="0x00"/>
<!--${QEP::QAsm::m_temp}-->
<attribute name="m_temp" type="QAsmAttr" visibility="0x01" properties="0x00"/>
<!--${QEP::QAsm::QStateRet}-->
<attribute name="QStateRet" type="enum" visibility="0x04" properties="0x01">
<documentation>//! All possible return values from state-handlers
//! @note
//! The order is important for algorithmic correctness.</documentation>
<code> : QState {
// unhandled and need to "bubble up"
Q_RET_SUPER, //!< event passed to superstate to handle
Q_RET_UNHANDLED, //!< event unhandled due to a guard
// handled and do not need to "bubble up"
Q_RET_HANDLED, //!< event handled (internal transition)
Q_RET_IGNORED, //!< event silently ignored (bubbled up to top)
// entry/exit
Q_RET_ENTRY, //!< state entry action executed
Q_RET_EXIT, //!< state exit action executed
// no side effects
Q_RET_NULL, //!< return value without any effect
// transitions need to execute transition-action table in QP::QMsm
Q_RET_TRAN, //!< regular transition
Q_RET_TRAN_INIT, //!< initial transition in a state
// transitions that additionally clobber QHsm.m_state
Q_RET_TRAN_HIST, //!< transition to history of a given state
};</code>
</attribute>
<!--${QEP::QAsm::ReservedSig}-->
<attribute name="ReservedSig" type="enum" visibility="0x04" properties="0x01">
<documentation>//! Reserved signals by the QP-framework.</documentation>
<code> : QSignal {
Q_EMPTY_SIG, //!< signal to execute the default case
Q_ENTRY_SIG, //!< signal for entry actions
Q_EXIT_SIG, //!< signal for exit actions
Q_INIT_SIG //!< signal for nested initial transitions
};</code>
</attribute>
<!--${QEP::QAsm::QAsm}-->
<operation name="QAsm" type="explicit" visibility="0x01" properties="0x02">
<specifiers>noexcept</specifiers>
<code> : m_state(),
m_temp ()</code>
</operation>
<!--${QEP::QAsm::~QAsm}-->
<operation name="~QAsm?def Q_XTOR" type="" visibility="0x00" properties="0x06">
<specifiers>noexcept</specifiers>
<code>// empty</code>
</operation>
<!--${QEP::QAsm::init}-->
<operation name="init" type="void" visibility="0x00" properties="0x04">
<specifiers>= 0</specifiers>
<!--${QEP::QAsm::init::e}-->
<parameter name="e" type="void const * const"/>
<!--${QEP::QAsm::init::qsId}-->
<parameter name="qsId" type="std::uint_fast8_t const"/>
</operation>
<!--${QEP::QAsm::init}-->
<operation name="init" type="void" visibility="0x00" properties="0x06">
<!--${QEP::QAsm::init::qsId}-->
<parameter name="qsId" type="std::uint_fast8_t const"/>
<code>this->init(nullptr, qsId);</code>
</operation>
<!--${QEP::QAsm::dispatch}-->
<operation name="dispatch" type="void" visibility="0x00" properties="0x04">
<specifiers>= 0</specifiers>
<!--${QEP::QAsm::dispatch::e}-->
<parameter name="e" type="QEvt const * const"/>
<!--${QEP::QAsm::dispatch::qsId}-->
<parameter name="qsId" type="std::uint_fast8_t const"/>
</operation>
<!--${QEP::QAsm::isIn}-->
<operation name="isIn" type="bool" visibility="0x00" properties="0x06">
<specifiers>noexcept</specifiers>
<!--${QEP::QAsm::isIn::state}-->
<parameter name="state" type="QStateHandler const"/>
<code>static_cast<void>(state);
return false;</code>
</operation>
<!--${QEP::QAsm::state}-->
<operation name="state" type="QStateHandler" visibility="0x00" properties="0x02">
<specifiers>const noexcept</specifiers>
<code>return m_state.fun;</code>
</operation>
<!--${QEP::QAsm::stateObj}-->
<operation name="stateObj" type="QMState const *" visibility="0x00" properties="0x02">
<specifiers>const noexcept</specifiers>
<code>return m_state.obj;</code>
</operation>
<!--${QEP::QAsm::getStateHandler}-->
<operation name="getStateHandler?def Q_SPY" type="QStateHandler" visibility="0x00" properties="0x06">
<specifiers>noexcept</specifiers>
<code>return m_state.fun;</code>
</operation>
<!--${QEP::QAsm::top}-->
<operation name="top" type="QState" visibility="0x00" properties="0x03">
<specifiers>noexcept</specifiers>
<!--${QEP::QAsm::top::me}-->
<parameter name="me" type="void * const"/>
<!--${QEP::QAsm::top::e}-->
<parameter name="e" type="QEvt const * const"/>
<code>static_cast<void>(me);
static_cast<void>(e);
return Q_RET_IGNORED; // the top state ignores all events</code>
</operation>
<!--${QEP::QAsm::tran}-->
<operation name="tran" type="QState" visibility="0x01" properties="0x02">
<specifiers>noexcept</specifiers>
<!--${QEP::QAsm::tran::target}-->
<parameter name="target" type="QStateHandler const"/>
<code>m_temp.fun = target;
return Q_RET_TRAN;</code>
</operation>
<!--${QEP::QAsm::tran_hist}-->
<operation name="tran_hist" type="QState" visibility="0x01" properties="0x02">
<specifiers>noexcept</specifiers>
<!--${QEP::QAsm::tran_hist::hist}-->
<parameter name="hist" type="QStateHandler const"/>
<code>m_temp.fun = hist;
return Q_RET_TRAN_HIST;</code>
</operation>
<!--${QEP::QAsm::super}-->
<operation name="super" type="QState" visibility="0x01" properties="0x02">
<specifiers>noexcept</specifiers>
<!--${QEP::QAsm::super::superstate}-->
<parameter name="superstate" type="QStateHandler const"/>
<code>m_temp.fun = superstate;
return Q_RET_SUPER;</code>
</operation>
<!--${QEP::QAsm::qm_tran}-->
<operation name="qm_tran" type="QState" visibility="0x01" properties="0x02">
<specifiers>noexcept</specifiers>
<!--${QEP::QAsm::qm_tran::tatbl}-->
<parameter name="tatbl" type="void const * const"/>
<code>m_temp.tatbl = static_cast<QP::QMTranActTable const *>(tatbl);
return Q_RET_TRAN;</code>
</operation>
<!--${QEP::QAsm::qm_tran_init}-->
<operation name="qm_tran_init" type="QState" visibility="0x01" properties="0x02">
<specifiers>noexcept</specifiers>
<!--${QEP::QAsm::qm_tran_init::tatbl}-->
<parameter name="tatbl" type="void const * const"/>
<code>m_temp.tatbl = static_cast<QP::QMTranActTable const *>(tatbl);
return Q_RET_TRAN_INIT;</code>
</operation>
<!--${QEP::QAsm::qm_tran_hist}-->
<operation name="qm_tran_hist" type="QState" visibility="0x01" properties="0x02">
<specifiers>noexcept</specifiers>
<!--${QEP::QAsm::qm_tran_hist::hist}-->
<parameter name="hist" type="QMState const * const"/>
<!--${QEP::QAsm::qm_tran_hist::tatbl}-->
<parameter name="tatbl" type="void const * const"/>
<code>m_state.obj = hist;
m_temp.tatbl = static_cast<QP::QMTranActTable const *>(tatbl);
return Q_RET_TRAN_HIST;</code>
</operation>
<!--${QEP::QAsm::qm_entry}-->
<operation name="qm_entry?def Q_SPY" type="QState" visibility="0x01" properties="0x02">
<specifiers>noexcept</specifiers>
<!--${QEP::QAsm::qm_entry::s}-->
<parameter name="s" type="QMState const * const"/>
<code>m_temp.obj = s;
return Q_RET_ENTRY;</code>
</operation>
<!--${QEP::QAsm::qm_entry}-->
<operation name="qm_entry?ndef Q_SPY" type="QState" visibility="0x01" properties="0x02">
<specifiers>noexcept</specifiers>
<!--${QEP::QAsm::qm_entry::s}-->
<parameter name="s" type="QMState const * const"/>
<code>static_cast<void>(s); // unused parameter
return Q_RET_ENTRY;</code>
</operation>
<!--${QEP::QAsm::qm_exit}-->
<operation name="qm_exit?def Q_SPY" type="QState" visibility="0x01" properties="0x02">
<specifiers>noexcept</specifiers>
<!--${QEP::QAsm::qm_exit::s}-->
<parameter name="s" type="QMState const * const"/>
<code>m_temp.obj = s;
return Q_RET_EXIT;</code>
</operation>
<!--${QEP::QAsm::qm_exit}-->
<operation name="qm_exit?ndef Q_SPY" type="QState" visibility="0x01" properties="0x02">
<specifiers>noexcept</specifiers>
<!--${QEP::QAsm::qm_exit::s}-->
<parameter name="s" type="QMState const * const"/>
<code>static_cast<void>(s); // unused parameter
return Q_RET_EXIT;</code>
</operation>
</class>
<!--${QEP::QHsm}-->
<class name="QHsm" superclass="QEP::QAsm">
<documentation>Human-generated State Machine</documentation>
<!--${QEP::QHsm::QHsm}-->
<operation name="QHsm" type="explicit" visibility="0x01" properties="0x00">
<specifiers>noexcept</specifiers>
<!--${QEP::QHsm::QHsm::initial}-->
<parameter name="initial" type="QStateHandler const"/>
<code>: QAsm()
m_state.fun = Q_STATE_CAST(&top);
m_temp.fun = initial;</code>
</operation>
<!--${QEP::QHsm::init}-->
<operation name="init" type="void" visibility="0x00" properties="0x04">
<specifiers>override</specifiers>
<!--${QEP::QHsm::init::e}-->
<parameter name="e" type="void const * const"/>
<!--${QEP::QHsm::init::qsId}-->
<parameter name="qsId" type="std::uint_fast8_t const"/>
<code>QF_CRIT_STAT
QState r;
// produce QS dictionary for QP::QHsm::top()
#ifdef Q_SPY
QS_CRIT_ENTRY();
QS_MEM_SYS();
if ((QS::priv_.flags & 0x01U) == 0U) {
QS::priv_.flags |= 0x01U;
r = Q_RET_HANDLED;
}
else {
r = Q_RET_IGNORED;
}
QS_MEM_APP();
QS_CRIT_EXIT();
if (r == Q_RET_HANDLED) {
QS_FUN_DICTIONARY(&QP::QHsm::top);
}
#else
Q_UNUSED_PAR(qsId);
#endif // def Q_SPY
QStateHandler t = m_state.fun;
QF_CRIT_ENTRY();
Q_REQUIRE_INCRIT(200, (m_temp.fun != nullptr)
&& (t == Q_STATE_CAST(&top)));
QF_CRIT_EXIT();
// execute the top-most initial tran.
r = (*m_temp.fun)(this, Q_EVT_CAST(QEvt));
QF_CRIT_ENTRY();
// the top-most initial tran. must be taken
Q_ASSERT_INCRIT(210, r == Q_RET_TRAN);
QS_MEM_SYS();
QS_BEGIN_PRE(QS_QEP_STATE_INIT, qsId)
QS_OBJ_PRE(this); // this state machine object
QS_FUN_PRE(t); // the source state
QS_FUN_PRE(m_temp.fun); // the target of the initial tran.
QS_END_PRE()
QS_MEM_APP();
QF_CRIT_EXIT();
// drill down into the state hierarchy with initial transitions...
do {
QStateHandler path[QHSM_MAX_NEST_DEPTH_]; // tran. entry path array
std::int_fast8_t ip = 0; // tran. entry path index
path[0] = m_temp.fun;
static_cast<void>(QHSM_RESERVED_EVT_(m_temp.fun, Q_EMPTY_SIG));
// note: ip is here the fixed upper loop bound
while ((m_temp.fun != t) && (ip < (QHSM_MAX_NEST_DEPTH_ - 1))) {
++ip;
path[ip] = m_temp.fun;
static_cast<void>(QHSM_RESERVED_EVT_(m_temp.fun, Q_EMPTY_SIG));
}
QF_CRIT_ENTRY();
// too many state nesting levels or "malformed" HSM
Q_ENSURE_INCRIT(220, ip < QHSM_MAX_NEST_DEPTH_);
QF_CRIT_EXIT();
m_temp.fun = path[0];
// retrace the entry path in reverse (desired) order...
// note: ip is the fixed upper loop bound
do {
// enter path[ip]
if (QHSM_RESERVED_EVT_(path[ip], Q_ENTRY_SIG)
== Q_RET_HANDLED)
{
QS_STATE_ENTRY_(path[ip], qsId);
}
--ip;
} while (ip >= 0);
t = path[0]; // current state becomes the new source
r = QHSM_RESERVED_EVT_(t, Q_INIT_SIG); // execute initial tran.
#ifdef Q_SPY
if (r == Q_RET_TRAN) {
QS_CRIT_ENTRY();
QS_MEM_SYS();
QS_BEGIN_PRE(QS_QEP_STATE_INIT, qsId)
QS_OBJ_PRE(this); // this state machine object
QS_FUN_PRE(t); // the source state
QS_FUN_PRE(m_temp.fun); // the target of the initial tran.
QS_END_PRE()
QS_MEM_APP();
QS_CRIT_EXIT();
}
#endif // Q_SPY
} while (r == Q_RET_TRAN);
QF_CRIT_ENTRY();
QS_MEM_SYS();
QS_BEGIN_PRE(QS_QEP_INIT_TRAN, qsId)
QS_TIME_PRE(); // time stamp
QS_OBJ_PRE(this); // this state machine object
QS_FUN_PRE(t); // the new active state
QS_END_PRE()
QS_MEM_APP();
QF_CRIT_EXIT();
m_state.fun = t; // change the current active state
#ifndef Q_UNSAFE
m_temp.uint = ~m_state.uint;
#endif</code>
</operation>
<!--${QEP::QHsm::init}-->
<operation name="init" type="void" visibility="0x00" properties="0x06">
<specifiers>override</specifiers>
<!--${QEP::QHsm::init::qsId}-->
<parameter name="qsId" type="std::uint_fast8_t const"/>
<code>this->init(nullptr, qsId);</code>
</operation>
<!--${QEP::QHsm::dispatch}-->
<operation name="dispatch" type="void" visibility="0x00" properties="0x04">
<specifiers>override</specifiers>
<!--${QEP::QHsm::dispatch::e}-->
<parameter name="e" type="QEvt const * const"/>
<!--${QEP::QHsm::dispatch::qsId}-->
<parameter name="qsId" type="std::uint_fast8_t const"/>
<code>#ifndef Q_SPY
Q_UNUSED_PAR(qsId);
#endif
QStateHandler s = m_state.fun;
QStateHandler t = s;
QF_CRIT_STAT
QF_CRIT_ENTRY();
Q_REQUIRE_INCRIT(300, (e != nullptr) && (s != nullptr));
Q_INVARIANT_INCRIT(301,
e->verify_()
&& (m_state.uint == static_cast<std::uintptr_t>(~m_temp.uint)));
QS_MEM_SYS();
QS_BEGIN_PRE(QS_QEP_DISPATCH, qsId)
QS_TIME_PRE(); // time stamp
QS_SIG_PRE(e->sig); // the signal of the event
QS_OBJ_PRE(this); // this state machine object
QS_FUN_PRE(s); // the current state
QS_END_PRE()
QS_MEM_APP();
QF_CRIT_EXIT();
// process the event hierarchically...
QState r;
m_temp.fun = s;
std::int_fast8_t ip = QHSM_MAX_NEST_DEPTH_; // fixed upper loop bound
do {
s = m_temp.fun;
r = (*s)(this, e); // invoke state handler s
if (r == Q_RET_UNHANDLED) { // unhandled due to a guard?
QS_CRIT_ENTRY();
QS_MEM_SYS();
QS_BEGIN_PRE(QS_QEP_UNHANDLED, qsId)
QS_SIG_PRE(e->sig); // the signal of the event
QS_OBJ_PRE(this); // this state machine object
QS_FUN_PRE(s); // the current state
QS_END_PRE()
QS_MEM_APP();
QS_CRIT_EXIT();
r = QHSM_RESERVED_EVT_(s, Q_EMPTY_SIG); // superstate of s
}
--ip;
} while ((r == Q_RET_SUPER) && (ip > 0));
QF_CRIT_ENTRY();
Q_ENSURE_INCRIT(310, ip > 0);
QF_CRIT_EXIT();
if (r >= Q_RET_TRAN) { // tran. (regular or history) taken?
#ifdef Q_SPY
if (r == Q_RET_TRAN_HIST) { // tran. to history?
QS_CRIT_ENTRY();
QS_MEM_SYS();
QS_BEGIN_PRE(QS_QEP_TRAN_HIST, qsId)
QS_OBJ_PRE(this); // this state machine object
QS_FUN_PRE(s); // tran. to history source
QS_FUN_PRE(m_temp.fun); // tran. to history target
QS_END_PRE()
QS_MEM_APP();
QS_CRIT_EXIT();
}
#endif // Q_SPY
QStateHandler path[QHSM_MAX_NEST_DEPTH_];
path[0] = m_temp.fun; // tran. target
path[1] = t; // current state
path[2] = s; // tran. source
// exit current state to tran. source s...
ip = QHSM_MAX_NEST_DEPTH_; // fixed upper loop bound
for (; (t != s) && (ip > 0); t = m_temp.fun) {
// exit from t
if (QHSM_RESERVED_EVT_(t, Q_EXIT_SIG) == Q_RET_HANDLED) {
QS_STATE_EXIT_(t, qsId);
// find superstate of t
static_cast<void>(QHSM_RESERVED_EVT_(t, Q_EMPTY_SIG));
}
--ip;
}
QF_CRIT_ENTRY();
Q_ENSURE_INCRIT(320, ip > 0);
QF_CRIT_EXIT();
ip = hsm_tran(&path[0], qsId); // take the tran.
// execute state entry actions in the desired order...
// note: ip is the fixed upper loop bound
for (; ip >= 0; --ip) {
// enter path[ip]
if (QHSM_RESERVED_EVT_(path[ip], Q_ENTRY_SIG)
== Q_RET_HANDLED)
{
QS_STATE_ENTRY_(path[ip], qsId);
}
}
t = path[0]; // stick the target into register
m_temp.fun = t; // update the next state
// drill into the target hierarchy...
while (QHSM_RESERVED_EVT_(t, Q_INIT_SIG) == Q_RET_TRAN) {
QS_CRIT_ENTRY();
QS_MEM_SYS();
QS_BEGIN_PRE(QS_QEP_STATE_INIT, qsId)
QS_OBJ_PRE(this); // this state machine object
QS_FUN_PRE(t); // the source (pseudo)state
QS_FUN_PRE(m_temp.fun); // the target of the tran.
QS_END_PRE()
QS_MEM_APP();
QS_CRIT_EXIT();
ip = 0;
path[0] = m_temp.fun;
// find superstate
static_cast<void>(QHSM_RESERVED_EVT_(m_temp.fun, Q_EMPTY_SIG));
// note: ip is the fixed upper loop bound
while ((m_temp.fun != t) && (ip < (QHSM_MAX_NEST_DEPTH_ - 1))) {
++ip;
path[ip] = m_temp.fun;
// find superstate
static_cast<void>(
QHSM_RESERVED_EVT_(m_temp.fun, Q_EMPTY_SIG));
}
QF_CRIT_ENTRY();
// too many state nesting levels or "malformed" HSM
Q_ENSURE_INCRIT(330, ip < QHSM_MAX_NEST_DEPTH_);
QF_CRIT_EXIT();
m_temp.fun = path[0];
// retrace the entry path in reverse (correct) order...
// note: ip is the fixed upper loop bound
do {
// enter path[ip]
if (QHSM_RESERVED_EVT_(path[ip], Q_ENTRY_SIG)
== Q_RET_HANDLED)
{
QS_STATE_ENTRY_(path[ip], qsId);
}
--ip;
} while (ip >= 0);
t = path[0]; // current state becomes the new source
}
QS_CRIT_ENTRY();
QS_MEM_SYS();
QS_BEGIN_PRE(QS_QEP_TRAN, qsId)
QS_TIME_PRE(); // time stamp
QS_SIG_PRE(e->sig); // the signal of the event
QS_OBJ_PRE(this); // this state machine object
QS_FUN_PRE(s); // the source of the tran.
QS_FUN_PRE(t); // the new active state
QS_END_PRE()
QS_MEM_APP();
QS_CRIT_EXIT();
}
#ifdef Q_SPY
else if (r == Q_RET_HANDLED) {
QS_CRIT_ENTRY();
QS_MEM_SYS();
QS_BEGIN_PRE(QS_QEP_INTERN_TRAN, qsId)
QS_TIME_PRE(); // time stamp
QS_SIG_PRE(e->sig); // the signal of the event
QS_OBJ_PRE(this); // this state machine object
QS_FUN_PRE(s); // the source state
QS_END_PRE()
QS_MEM_APP();
QS_CRIT_EXIT();
}
else {
QS_CRIT_ENTRY();
QS_MEM_SYS();
QS_BEGIN_PRE(QS_QEP_IGNORED, qsId)
QS_TIME_PRE(); // time stamp
QS_SIG_PRE(e->sig); // the signal of the event
QS_OBJ_PRE(this); // this state machine object
QS_FUN_PRE(m_state.fun); // the current state
QS_END_PRE()
QS_MEM_APP();
QS_CRIT_EXIT();
}
#endif // Q_SPY
m_state.fun = t; // change the current active state
#ifndef Q_UNSAFE
m_temp.uint = ~m_state.uint;
#endif</code>
</operation>
<!--${QEP::QHsm::isIn}-->
<operation name="isIn" type="bool" visibility="0x00" properties="0x00">
<specifiers>noexcept override</specifiers>
<!--${QEP::QHsm::isIn::state}-->
<parameter name="state" type="QStateHandler const"/>
<code>QF_CRIT_STAT
QF_CRIT_ENTRY();
Q_INVARIANT_INCRIT(602,
m_state.uint == static_cast<std::uintptr_t>(~m_temp.uint));
QF_CRIT_EXIT();
bool inState = false; // assume that this HSM is not in 'state'
// scan the state hierarchy bottom-up
QStateHandler s = m_state.fun;
std::int_fast8_t lbound = QHSM_MAX_NEST_DEPTH_ + 1; // fixed upper loop bound
QState r = Q_RET_SUPER;
for (; (r != Q_RET_IGNORED) && (lbound > 0); --lbound) {
if (s == state) { // do the states match?
inState = true; // 'true' means that match found
break; // break out of the for-loop
}
else {
r = QHSM_RESERVED_EVT_(s, Q_EMPTY_SIG);
s = m_temp.fun;
}
}
QF_CRIT_ENTRY();
Q_ENSURE_INCRIT(690, lbound > 0);
QF_CRIT_EXIT();
#ifndef Q_UNSAFE
m_temp.uint = ~m_state.uint;
#endif
return inState; // return the status</code>
</operation>
<!--${QEP::QHsm::childState}-->
<operation name="childState" type="QStateHandler" visibility="0x00" properties="0x00">
<specifiers>noexcept</specifiers>
<!--${QEP::QHsm::childState::parent}-->
<parameter name="parent" type="QStateHandler const"/>
<code>QStateHandler child = m_state.fun; // start with current state
bool isFound = false; // start with the child not found
// establish stable state configuration
m_temp.fun = child;
QState r;
std::int_fast8_t lbound = QHSM_MAX_NEST_DEPTH_; // fixed upper loop bound
do {
// is this the parent of the current child?
if (m_temp.fun == parent) {
isFound = true; // child is found
r = Q_RET_IGNORED; // break out of the loop
}
else {
child = m_temp.fun;
r = QHSM_RESERVED_EVT_(m_temp.fun, Q_EMPTY_SIG);
}
--lbound;
} while ((r != Q_RET_IGNORED) // the top state not reached
&& (lbound > 0));
#ifndef Q_UNSAFE
m_temp.uint = ~m_state.uint;
#else
Q_UNUSED_PAR(isFound);
#endif
QF_CRIT_STAT
QF_CRIT_ENTRY();
// NOTE: the following postcondition can only succeed when
// (lbound > 0), so no extra check is necessary.
Q_ENSURE_INCRIT(890, isFound);
QF_CRIT_EXIT();
return child;</code>
</operation>
<!--${QEP::QHsm::getStateHandler}-->
<operation name="getStateHandler?def Q_SPY" type="QStateHandler" visibility="0x00" properties="0x06">
<specifiers>noexcept override</specifiers>
<code>return m_state.fun;</code>
</operation>
<!--${QEP::QHsm::hsm_tran}-->
<operation name="hsm_tran" type="std::int_fast8_t" visibility="0x02" properties="0x00">
<!--${QEP::QHsm::hsm_tran::path}-->
<parameter name="path" type="QStateHandler * const"/>
<!--${QEP::QHsm::hsm_tran::qsId}-->
<parameter name="qsId" type="std::uint_fast8_t const"/>
<code>#ifndef Q_SPY
Q_UNUSED_PAR(qsId);
#endif
std::int_fast8_t ip = -1; // tran. entry path index
QStateHandler t = path[0];
QStateHandler const s = path[2];
QF_CRIT_STAT
// (a) check source==target (tran. to self)...
if (s == t) {
// exit source s
if (QHSM_RESERVED_EVT_(s, Q_EXIT_SIG) == Q_RET_HANDLED) {
QS_STATE_EXIT_(s, qsId);
}
ip = 0; // enter the target
}
else {
// find superstate of target
static_cast<void>(QHSM_RESERVED_EVT_(t, Q_EMPTY_SIG));
t = m_temp.fun;
// (b) check source==target->super...
if (s == t) {
ip = 0; // enter the target
}
else {
// find superstate of src
static_cast<void>(QHSM_RESERVED_EVT_(s, Q_EMPTY_SIG));
// (c) check source->super==target->super...
if (m_temp.fun == t) {
// exit source s
if (QHSM_RESERVED_EVT_(s, Q_EXIT_SIG) == Q_RET_HANDLED) {
QS_STATE_EXIT_(s, qsId);
}
ip = 0; // enter the target
}
else {
// (d) check source->super==target...
if (m_temp.fun == path[0]) {
// exit source s
if (QHSM_RESERVED_EVT_(s, Q_EXIT_SIG) == Q_RET_HANDLED) {
QS_STATE_EXIT_(s, qsId);
}
}
else {
// (e) check rest of source==target->super->super..
// and store the entry path along the way
std::int_fast8_t iq = 0; // indicate that LCA was found
ip = 1; // enter target and its superstate
path[1] = t; // save the superstate of target
t = m_temp.fun; // save source->super
// find target->super->super...
// note: ip is the fixed upper loop bound
QState r = QHSM_RESERVED_EVT_(path[1], Q_EMPTY_SIG);
while ((r == Q_RET_SUPER)
&& (ip < (QHSM_MAX_NEST_DEPTH_ - 1)))
{
++ip;
path[ip] = m_temp.fun; // store the entry path
if (m_temp.fun == s) { // is it the source?
iq = 1; // indicate that the LCA found
--ip; // do not enter the source
r = Q_RET_HANDLED; // terminate the loop
}
else { // it is not the source, keep going up
r = QHSM_RESERVED_EVT_(m_temp.fun, Q_EMPTY_SIG);
}
}
QF_CRIT_ENTRY();
// NOTE: The following postcondition succeeds only when
// ip < QHSM_MAX_NEST_DEPTH, so no additional check is necessary
// too many state nesting levels or "malformed" HSM.
Q_ENSURE_INCRIT(510, r != Q_RET_SUPER);
QF_CRIT_EXIT();
// the LCA not found yet?
if (iq == 0) {
// exit source s
if (QHSM_RESERVED_EVT_(s, Q_EXIT_SIG)
== Q_RET_HANDLED)
{
QS_STATE_EXIT_(s, qsId);
}
// (f) check the rest of source->super
// == target->super->super...
iq = ip;
r = Q_RET_IGNORED; // indicate that the LCA NOT found
// note: iq is the fixed upper loop bound
do {
if (t == path[iq]) { // is this the LCA?
r = Q_RET_HANDLED; // indicate the LCA found
ip = iq - 1; // do not enter the LCA
iq = -1; // cause termination of the loop
}
else {
--iq; // try lower superstate of target
}
} while (iq >= 0);
// the LCA not found yet?
if (r != Q_RET_HANDLED) {
// (g) check each source->super->...
// for each target->super...
r = Q_RET_IGNORED; // keep looping
std::int_fast8_t lbound = QHSM_MAX_NEST_DEPTH_;
do {
// exit from t
if (QHSM_RESERVED_EVT_(t, Q_EXIT_SIG)
== Q_RET_HANDLED)
{
QS_STATE_EXIT_(t, qsId);
// find superstate of t
static_cast<void>(
QHSM_RESERVED_EVT_(t, Q_EMPTY_SIG));
}
t = m_temp.fun; // set to super of t
iq = ip;
do {
// is this the LCA?
if (t == path[iq]) {
ip = iq - 1; // do not enter the LCA
iq = -1; // break out of inner loop
r = Q_RET_HANDLED; // break outer loop
}
else {
--iq;
}
} while (iq >= 0);
--lbound;
} while ((r != Q_RET_HANDLED) && (lbound > 0));
QF_CRIT_ENTRY();
Q_ENSURE_INCRIT(530, lbound > 0);
QF_CRIT_EXIT();
}
}
}
}
}
}
QF_CRIT_ENTRY();
Q_ENSURE_INCRIT(590, ip < QHSM_MAX_NEST_DEPTH_);
QF_CRIT_EXIT();
return ip;</code>
</operation>
</class>
<!--${QEP::QMsm}-->
<class name="QMsm" superclass="QEP::QAsm">
<documentation>Machine-generated State Machine</documentation>
<!--${QEP::QMsm::QMsm}-->
<operation name="QMsm" type="explicit" visibility="0x01" properties="0x00">
<specifiers>noexcept</specifiers>
<!--${QEP::QMsm::QMsm::initial}-->
<parameter name="initial" type="QStateHandler const"/>