QP/C++
Classes | Defines | Functions | Variables
qk.h File Reference

QK/C++ platform-independent public interface. More...

#include "qequeue.h"
#include "qmpool.h"
#include "qpset.h"

Go to the source code of this file.

Classes

class  QK
 QK services. More...

Defines

#define QF_EQUEUE_TYPE   QEQueue
 This macro defines the type of the event queue used for the active objects.
#define QACTIVE_EQUEUE_WAIT_(me_)   Q_ASSERT((me_)->m_eQueue.m_frontEvt != static_cast<QEvt const *>(0))
 Platform-dependent macro defining how QF should block the calling task when the QF native queue is empty.
#define QACTIVE_EQUEUE_SIGNAL_(me_)
 Platform-dependent macro defining how QF should signal the active object task that an event has just arrived.
#define QACTIVE_EQUEUE_ONEMPTY_(me_)   QK_readySet_.remove((me_)->m_prio)
 Platform-dependent macro defining the action QF should take when the native QF event queue becomes empty.
#define QF_EPOOL_TYPE_   QMPool
 This macro defines the type of the event pool used in this QF port.
#define QF_EPOOL_INIT_(p_, poolSto_, poolSize_, evtSize_)
 Platform-dependent macro defining the event pool initialization.
#define QF_EPOOL_EVENT_SIZE_(p_)   static_cast<uint32_t>((p_).getBlockSize())
 Platform-dependent macro defining how QF should obtain the event pool block-size.
#define QF_EPOOL_GET_(p_, e_)   ((e_) = static_cast<QEvt *>((p_).get()))
 Platform-dependent macro defining how QF should obtain an event e_ from the event pool p_.
#define QF_EPOOL_PUT_(p_, e_)   ((p_).put(e_))
 Platform-dependent macro defining how QF should return an event e_ to the event pool p_.

Functions

QP_END_ void QK_init (void)
 QK initialization.
void QK_sched_ (uint8_t p)
 The QK scheduler.
void QK_schedExt_ (uint8_t p)
 The QK extended scheduler for interrupt context.
uint8_t QK_schedPrio_ (void)
 Find the highest-priority task ready to run.

Variables

QP_BEGIN_ typedef uint8_t QMutex
 QK Mutex type.
QP_ QPSet64 QK_readySet_
 ready set of QK
uint8_t QK_currPrio_
 current task/interrupt priority
uint8_t QK_intNest_
 interrupt nesting level

Detailed Description

QK/C++ platform-independent public interface.

This header file must be included directly or indirectly in all modules (*.cpp files) that use QK/C++.

Definition in file qk.h.


Define Documentation

#define QACTIVE_EQUEUE_ONEMPTY_ (   me_)    QK_readySet_.remove((me_)->m_prio)

Platform-dependent macro defining the action QF should take when the native QF event queue becomes empty.

Note:
QACTIVE_EQUEUE_ONEMPTY_ is called from a critical section. It should not leave the critical section.
This is just an example of QACTIVE_EQUEUE_ONEMPTY_ for the QK-port of QF. In other QF ports you need to define the macro appropriately for the underlying kernel/OS you're using.

Definition at line 139 of file qk.h.

#define QACTIVE_EQUEUE_SIGNAL_ (   me_)
Value:
do { \
    QK_readySet_.insert((me_)->m_prio); \
    if (QK_intNest_ == static_cast<uint8_t>(0)) { \
        uint8_t p = QK_schedPrio_(); \
        if (p != static_cast<uint8_t>(0)) { \
            QK_sched_(p); \
        } \
    } \
} while (false)

Platform-dependent macro defining how QF should signal the active object task that an event has just arrived.

The macro is necessary only when the native QF event queue is used. The signaling of task involves unblocking the task if it is blocked.

Note:
QACTIVE_EQUEUE_SIGNAL_ is called from a critical section. It might leave the critical section internally, but must restore the critical section before exiting to the caller.
This is just an example of QACTIVE_EQUEUE_SIGNAL_ for the QK-port of QF. In other QF ports you need to define the macro appropriately for the underlying kernel/OS you're using.

Definition at line 120 of file qk.h.

Referenced by QActive::postFIFO(), and QActive::postLIFO().

#define QACTIVE_EQUEUE_WAIT_ (   me_)    Q_ASSERT((me_)->m_eQueue.m_frontEvt != static_cast<QEvt const *>(0))

Platform-dependent macro defining how QF should block the calling task when the QF native queue is empty.

Note:
This is just an example of QACTIVE_EQUEUE_WAIT_ for the QK-port of QF. QK never activates a task that has no events to process, so in this case the macro asserts that the queue is not empty. In other QF ports you using.

Definition at line 104 of file qk.h.

#define QF_EPOOL_EVENT_SIZE_ (   p_)    static_cast<uint32_t>((p_).getBlockSize())

Platform-dependent macro defining how QF should obtain the event pool block-size.

Note:
This is a specific implementation for the QK-port of QF. In other QF ports you need to define the macro appropriately for the underlying kernel/OS you're using.

Definition at line 166 of file qk.h.

Referenced by QF::new_(), and QF::poolInit().

#define QF_EPOOL_GET_ (   p_,
  e_ 
)    ((e_) = static_cast<QEvt *>((p_).get()))

Platform-dependent macro defining how QF should obtain an event e_ from the event pool p_.

Note:
This is a specific implementation for the QK-port of QF. In other QF ports you need to define the macro appropriately for the underlying kernel/OS you're using.

Definition at line 175 of file qk.h.

Referenced by QF::new_().

#define QF_EPOOL_INIT_ (   p_,
  poolSto_,
  poolSize_,
  evtSize_ 
)
Value:
(p_).init((poolSto_), (poolSize_), \
        static_cast<QMPoolSize>(evtSize_))

Platform-dependent macro defining the event pool initialization.

Note:
This is a specific implementation for the QK-port of QF. In other QF ports you need to define the macro appropriately for the underlying kernel/OS you're using.

Definition at line 156 of file qk.h.

Referenced by QF::poolInit().

#define QF_EPOOL_PUT_ (   p_,
  e_ 
)    ((p_).put(e_))

Platform-dependent macro defining how QF should return an event e_ to the event pool p_.

Note:
This is a specific implementation for the QK-port of QF. In other QF ports you need to define the macro appropriately for the underlying kernel/OS you're using.

Definition at line 183 of file qk.h.

Referenced by QF::gc().

#define QF_EPOOL_TYPE_   QMPool

This macro defines the type of the event pool used in this QF port.

Note:
This is a specific implementation for the QK-port of QF. In other QF ports you need to define the macro appropriately for the underlying kernel/OS you're using.

Definition at line 149 of file qk.h.

#define QF_EQUEUE_TYPE   QEQueue

This macro defines the type of the event queue used for the active objects.

Note:
This is just an example of the macro definition. Typically, you need to define it in the specific QF port file (qf_port.h). In case of QK, which always depends on the native QF queue, this macro is defined at the level of the platform-independent interface qk.h.

Definition at line 59 of file qk.h.


Function Documentation

QP_END_ void QK_init ( void  )

QK initialization.

QK_init() is called from QF_init() in qk.cpp. This function is defined in the QK ports.

void QK_sched_ ( uint8_t  p)

The QK scheduler.

Note:
The QK scheduler must be always called with the interrupts disabled and enables interrupts internally.
See also:
QK_schedPrio_()

Definition at line 72 of file qk_sched.cpp.

References QF::active_, QS::aoObj_, QPSet64::findMax(), QF::gc(), QF_INT_DISABLE, QF_INT_ENABLE, QK_currPrio_, QK_readySet_, QK_TLS, QP_, QS_BEGIN_NOCRIT_, QS_END_NOCRIT_, QS_QK_SCHEDULE, QS_TIME_, and QS_U8_.

Referenced by QK::mutexUnlock().

void QK_schedExt_ ( uint8_t  p)

The QK extended scheduler for interrupt context.

Note:
The QK extended scheduler must be always called with the interrupts disabled and enables interrupts internally.
See also:
QK_schedPrio_()

Definition at line 54 of file qk_ext.cpp.

References QF::active_, QS::aoObj_, QPSet64::findMax(), QF::gc(), QF_INT_DISABLE, QF_INT_ENABLE, QK_currPrio_, QK_EXT_SAVE, QK_readySet_, QK_TLS, QP_, QS_BEGIN_NOCRIT_, QS_END_NOCRIT_, QS_QK_SCHEDULE, QS_TIME_, and QS_U8_.

uint8_t QK_schedPrio_ ( void  )

Find the highest-priority task ready to run.

Note:
QK_schedPrio_() must be always called with interrupts disabled and returns with interrupts disabled.

Definition at line 56 of file qk_sched.cpp.

References QPSet64::findMax(), QK_ceilingPrio_, QK_currPrio_, and QK_readySet_.

Referenced by QK::mutexUnlock().


Variable Documentation

QP_BEGIN_ typedef uint8_t QMutex

QK Mutex type.

QMutex represents the priority-ceiling mutex available in QK.

See also:
QK::mutexLock()
QK::mutexUnlock()

Definition at line 195 of file qk.h.