QP/C++
QP/C++ Revision History

Version 4.4.00 (Product) Release date: May 02, 2012

The main pupose of this relase is MISRA-C++:2008 compliance, strong-type checking compliance, update of PC-Lint option files and tests, and general cleanup.

1. Moved the qp_port.h header file from the port directories to the qcppp/include/ directory. Also, moved the inclusion of the QS (Spy) header files (qs_port.h/qs_dummy.h) from qep.h, qf.h, and qk.h headers to qp_port.h. These structural changes were made to reduce the number of preprocessor #if nesting levels below 8, which is the ANSI-C limit. This was done to comply with the MISRA-C rule 1.1 (all code shall conform to ANSI/ISO C).

NOTE: This modifications have impact on most QP/C++ ports, because the qp_port.h header file must be removed from the port.

2. Enabled the QP namespace in most QP/C++ ports (except the DOS ports with the Open Watcom compiler). This modification was needed for MISRA-C++:2008 compliance with the rule 7-3-1.

NOTE: This modifications have impact on most QP/C++ ports, because all QP elements require now using the QP:: prefix. However, this prefix can be dropped when the application applies the "using namespace QP" directive. (The "using" directive deviates from MISRA-C++:2008 rule 7-3-4, so it is not used in the MISRA-compliant examples. However, a number of QP ports applies the "using" directive for backwards compatibilty.)

3. Added the PC-Lint option files std.lnt and lib-qpcpp.lnt to the qcppp/include/ directory.

4. Cleaned the whole QP/C code from lint comments. All PC-Lint options have been moved to PC-Lint option files.

5. Modified QP assertion macro Q_DEFINE_THIS_MODULE() to avoid using the # operator (MISRA rule 16-3-2). This macro now requires the argument enclosed in doble quotes "".

NOTE: This modification has impact on some QP/C++ ports.

6. Added typedefs for char_t, int_t, float32_t, and float64_t to event.h header file for compliance with MISRA-C++:2008 rules 3-9-2.

7. Added macros Q_STATE_CAST() and Q_EVENT_CAST() to qep.h to encapsulate deviation from MISRA-C++:2008 rule 5-2-7.

8. Added macro Q_UINT2PTR_CAST() to encapsulate casting unsigned integers to pointers, which deviates from MISRA-C++:2008 rules 5-2-7 and 5-2-8. This macro has been added for *application-level* code.

9. Updated ARM Cortex-M examples with the latest CMSIS v3.0, which complies with more MISRA-C:2004 rules.

10. Added DPP examples for MISRA-C++:2008 compliant applications (for IAR-ARM and GNU-ARM).

11. Updated ARM-Cortex-M3 port with GNU to the latest Sourcery CodeBench 2011.09-60.

12. Added QP/C++ port to Win32-1t and examples (Windows with 1 thread). This port is useful for testing embedded QP/C++ applications on windows.

13. Added documentation to QP/C++ distribution in the directory qpcpp/doc/, with the following Application notes: "MISRA-C++:2008 Compliance Matrix", "Quantum Leaps Coding Standard", "QP and ARM Cortex-M, and QP and Windows",

Version 4.3.00 (Product) Release date: Nov 03, 2011

1. This release changes the names of critical section macros and introduces macros for unconditional interrupt disabling/enabling. This is done to simplify and speed up the built-in Vanilla and QK kernels, which no longer are dependent on the interrupt locking policy.

NOTE: The change in handling the critical section in the Vanilla and QK kernels can break QP ports, which use the "save and restore interrupt lock" policy, because all such ports must also define unconditional interrupt disabling and enabling.

2. This release changes the partitioning of the QK scheduler. Specifically, the QK scheduler is now divided between two functions QK_schedPrio_() and QK_sched_(), to calculate the highest-priority task ready to run and to perform scheduling, respectively. The function QK_schedPrio_() is useful to determine if scheduling is even necessary.

3. Updated all QP ports to comply with the new critical section names and policies.

4. Modified the ARM Cortex-M port qk_port.s to take advantage of the new structure of the QK scheduler.

5. Upgraded the examples for ARM Cortex with IAR EWARM to the latest IAR EWARM version 6.30.

6. Upgraded the examples for ARM Cortex with GNU (CodeSourcery) to the latest Sourcery CodeBench 2011.07-60.

Version 4.2.04 (Product) Release date: Sep 24, 2011

The main pupose of this relase is to provide a bug fix for the QK port to ARM Cortex processors. The bug fix addresses a very rare and undocumented behavior of late-arrival of an interrupt while entering the PendSV exception. In this case the PENDSVSET bit in the NVIC-ICSR register is *not* cleared when finally PendSV is entered, so the PendSV exception is entered in a *different* state when it is entered via the late-arrival mechanism versus the normal activation of the exception through tail-chaining. The consequence of this undocumented and inconsistent hardware behavior, PendSV could be re-entered again before the SVCall exception cleans up the stack. The bug fix is implemented in the qk_port.s file and consists of clearing the PENDSVSET bit programmatically inside PendSV_Handler.

Version 4.2.02 (Product) Release date: Sep 08, 2011

1. The main pupose of this relase is to repackage the default QP/C++ distribution to contain the single root directory qpcpp/ in the archive. That way, unziping the archive will produce only one directory (qpcpp/), which can be then changed by the user.

2. This release also changes the ARM Cortex QP ports with GNU. The suffix "_cs" has been added to all QP libraries generated by the Code Sourcery toolset (now Mentor Sourcery CodeBench). This is to distinguish libraries generated by different GNU-toolchains (such as CodeRed, Attolic, DevKit ARM, etc.)

Version 4.2.01 (Product) Release date: Aug 13, 2011

1. Modified file qassert.h to add assertion macros Q_ASSERT_ID, Q_REQUIRE_ID, Q_ENSURE_ID, Q_INVARIANT_ID, and Q_ERROR_ID, which are better suited for unit testig, because they avoid the volatility of line numbers for indentifying assertions.

2. Added QP port and examples for Mac OS X on 80x86.

Version 4.2.00 (Product) Release date: Jul 15, 2011

The goal of this milestone release is to extend the number of event pools (theoretically up to 255 pools) instead of just three event pools available up til now. This release adds an option to use constructors/destructors and virtual functions in subclasses of QEvent. Also, this release adds an option to wrap the whole QP framework in the QP namespace to avoid name conflicts with other libraries and to improve QP compliance with MISRA C++ 2008. This release adds also several improvements to the QS/QSPY software tracing, such as adding sender information to event posting so that sequence diagrams could be easily and automatically reconstructed from tracing data. Also, the tracing now supports 64-bit targets, such as embedded Linux 64-bit. Finally, this milestone release migrates the examples to use the environment variable QPCPP instead of relying on the relative path to the QP/C++ framework. This allows easier adaptation of the examples for real projects, which don't really belong to the examples directory.

The changes in detail are:

1. Changed the QEvent base class (file qevent.h). The private member 'dynamic_' has been replaced by two members 'poolId_' and 'refCtr_'.

2. Added conditionally-compiled constructor and virtual destructor to the QEvent base class (file qevent.h). Also added the inclusion of the <new> header file for placement new if the constructor/ destructor option is configured.

3. Added new version of the macro Q_NEW() with variable number of paramters, which invokes the event constructor (via placement new) with any parameters requried by the event constructor (file qf.h).

4. Added explicit call to the event destructor in QF::gc() (file qf_gc.cpp).

5. Added configuration macro QF_MAX_EPOOL (file qf.h) to define the maximum number of event pools in the QP application (default to 3). The maximum theoretical number of this macro is 255.

6. Made algorithmic changes in the QF source code related to the change of storing the event pool-IDs and reference counters inside QEvent.

7. Changed the default signal size (macro Q_SIGNAL_SIZE in the file qevent.h) from 1 to 2 bytes.

8. Changed the signature of QActive::recall() to return uint8_t instead of QEvent*, which this could encourage incorrect usage (processing of the event at the point of recalling it). Now, the function only returns 1 (TRUE) if the event was recalled and 0 (FALSE) if the event was not recalled.

9. Added the QTimeEvt() constructor and new source file qte_ctr.cpp. The function returns the counter of a time event, which allows using a time event for measuring the time.

10. Added new QF macros #QF_TICK, #QF_PUBLISH, and #QACTIVE_POST in file qf.h to provide sender of the events for software tracing.

11. Added new QS macros (files qs.h and qs_dummy.h) for handling 64-bit integers.

12. Added the functions QS::u64() and QS::u64_() and new source file qs_u64.cpp.

13. Added the QS macro QS_U32_HEX_T for hexadecimal formatting of integer numbers in the user-defined trace records.

14. Added the new port linux64 for 64-bit Linux. Also added the corresponding examples for 64-bit Linux.

15. Adapted the QSPY host application for 64-bit pointer sizes and the changed layout of trace records that contain event information (such as PoolID and RefCtr). Also added the backwards-compatibility option (-v) for switching the tool to the previous data format.

16. Removed the tools directory from the QPC distribution and moved the QSPY host application to the QTOOLS distribution, which now also contains the GNU make tools for Windows.

17. Modified the make files and project files to use the environment variable QPCPP instead of relying on the relative path to the QP/C++ framework.

18. Upgraded the examples for ARM Cortex with IAR EWARM to the latest IAR EWARM 6.20.

Version 4.1.07 (Product) Release date: Feb 28, 2011

The goal of this release is to improve the ease of experimenting with QP/C++ on the desktop. This release adds support for Windows (Win32) to the baseline code. Two most popular compilers for Windows are supported: Microsoft Visual Studio and MinGW (GNU). The support for Linux has been improved by including pre-built QP/C++ libraries and improving makefiles for Eclipse compatibility.

The changes in detail are:

1. Added Win32 port with the Visual C++ 2008 (ports/80x86/win32/vc2008). This directory contains the Visual Studio solution all_qp.sln for building all QP/C++ libraries from the IDE. Three build configurations (Debug, Release, and Spy) are supported.

2. Added Win32 port with the MinGW comiler (ports/80x86/win32/mingw). This directory contains the Makefile for building all QP/C++ libraries. Three build configurations (dbg, rel, and spy) are supported. NOTE: the Makefile assumes that the MinGW/bin directory is added to the PATH.

3. Added Win32 examples for Visual C++ 2008 (examples/80x86/win32/ vc2008/dpp and examples/80x86/win32/vc2008/qhsmtst). Visual Studio soultions are provides for all build configurations.

4. Added Win32 examples for MinGW (examples/80x86/win32/mingw/dpp and examples/80x86/win32/mingw/qhsmtst). Eclipse-compatible makefiles are provided for all build configurations. NOTE: the Makefiles assume that the MinGW/bin directory is added to the PATH.

5. Removed memory alignment correction in the file qmp_init.c. This correction required casting of pointers to integers and was problematic on 64-bit targets (such as 64-bit Linux).

6. Upgraded the examples for ARM Cortex with CodeSourcery to the latest Sourcery G++ 2011.02-2.

Version 4.1.06 (Product) Release date: Jan 07, 2011

1. Fixed a bug in the software tracing instrumentation in the function QF::remove_(), file qf_act.cpp.

2. Made cosmetic improvements to the example QM models of the "Fly 'n' Shoot" game.

3. Made improvements in make.bat files for building the examples for DOS/Open Watcom to run better in DosBox on Linux.

4. Upgraded the examples for ARM Cortex with IAR to the latest IAR EWARM version 6.10.

5. Upgraded the examples for ARM Cortex with CodeSourcery to the latest Sourcery G++ 2010.09-66.

Version 4.1.05 (Product) Release date: Nov 01, 2010

This release is adds examples for the QM (QP Modeler) graphical modeling and code generation tool. The examples are based on the "Fly 'n' Shoot" game described in the QP/C++ Tutorial and in Chapter 1 of the PSiCC2 book.

Specifically, the directory <qpcpp>/examples/80x86/dos/watcom/l/game-qm/ contains the "Fly 'n' Shoot" game model file "game.qm". This model, when opened in the QM tool contains all state machine diagrams and generates code into the subdirectory qm_code/. This code can then be built and executed on any 80x86 machine (newer versions of Windows or Linux require the DOSbox application, see http://www.dosbox.com).

The directory <qpcpp>/examples/arm-cortex/vanilla/iar/game-ev-lm3s811-qm/ contains the version of the game for the EV-LM3S811 ARM Cortex-M3 board. This directory contains the model file "game.qm", which is actually identical as the model in the DOS version. The LM3S811 version needs to be compiled with the IAR compiler and executed on the EV-LM3S811 board.

Additionally, the QP/C++ baseline code has been slighlty modified for better conformance to the MISRA C++ 2008 rules and the latest PC-Lint 9.x.

Version 4.1.04 (Product) Release date: Mar 16, 2010

This release is adds compatibility of all examples for DOS with the DOSBox emulator (http://www.dosbox.com/) that recreates a MS-DOS compatible environment on all versions of Windows, including 64-bit Windows that don't run 16-bit DOS applications anymore.

Also, this release includes QP ports and examples for EV-LM3S811 board with the GNU-based Code Sourcery G++ toolset. Support for Sourcery G++ provides a very cost-effective option for developing QP applications for ARM Cortex MCUs.

Finally, this release improves the Cortex Microcontroller Software Interface Standard (CMSIS) for the whole family of the Stellaris LM3Sxxx MCUs. The improvement extends the CMSIS from Sandstorm to Fury, DustDevil, and Tempest Stellaris families.

Version 4.1.03 (Product) Release date: Jan 21, 2010

This release is concerned with the ARM Cortex ports and examples. Specifically, this release contains the following improvements:

1. Unified source code for ARM Cortex-M3 and the new ARM Cortex-M0 cores, including the code for the preemptive QK kernel.

2. Compliance with the Cortex Microcontroller Software Interface Standard (CMSIS) in all ARM Cortex examples.

3. Backward-compatible support for the new LM3S811 EVAL Rev C board with different OLED display than previous revisions. (NOTE: The OSRAM 96x16x1 OLED used in REV A-B boards has been replaced RITEK 96x16x1 OLED used in Rev C.)

In the process of making the examples CMSIS-compliant, the dependency on the Luminary Micro driver library (driverlib.a) has been completely removed.

Additionally, the screen saver of the "Fly 'n' Shoot" game has been improved to periodically switch off the power of the OLED display, which better protects the display from burn-in. The affected file is tunnel.cpp.

Finally, this release introduces the QP_VERSION macro, which identifies the QP version. Otherwise, this maintenance release does not change the QP/C API in any way, so the release has NO IMPACT on the QP/C applications except for the ARM Cortex ports and applications.

Version 4.1.02 (Product) Release date: Jan 14, 2010

The purpose of this minor maintenance release is the change in the directory structure for the ARM Cortex ports and examples. As new ARM Cortex cores are becoming available, the old port name "cortex-m3" could be misleading, because it actually applies to wider range of ARM Cortex cores. Consequently, all ARM Cortex ports and examples are hosted in the directory tree called "arm-cortex".

This maintenance release does not change the QP/C++ API in any way, so the release has NO IMPACT on the QP/C++ applications except for the ARM Cortex ports.

Version 4.1.01 (Product) Release date: Nov 05, 2009

The main purpose of this release is to replace the Turbo C++ 1.01 toolset with the Open Watcom C/C++ toolset, because Turbo C++ 1.01 is no longer available for a free download. In contrast, Open Watcom is distributed under an OSI-certified open source license, which permits free commercial and non-commercial use. Open Watcom can be downloaded from www.openwatcom.org.

All 80x86/DOS and 80x86/qk ports and examples for Turbo C++ 1.01 have been replaced with ports and examples for Open Watcom. The make.bat scripts are provided to build the QP/C++ libraries and examples.

In the process of converting the examples to Open Watcom two new examples have been added to the standard QP/C++ distribution. The Calc2 example located in <qpcpp>/examples/80x86/dos/watcom/l/calc2 shows how to derive state machine classes with QP 4.x. The SLS example located in <qpcpp>/examples/80x86/dos/watcom/l/sls shows the implemenation of the new State-Local Storage state design pattern.

Version 4.1.00 (Product) Release date: Oct 09, 2009

The release provides brings a number of improvements to QP/C++ and updates the QP/C++ ARM Cortex-M3 examples for the EK-LM3S811 board to the latest IAR EWARM 5.40. Due to the acquisition of Liminary Micro by Texas Instruments the directory IAR structure for the examples and drivers has changed and the QP examples had to be changed accordingly.

This maintenance release does not change the QP/C++ API in any way, so the release has NO IMPACT on the QP/C++ applications.

The main changes in QP v4.1.00 with respect to earlier versions are as follows:

Version 4.0.04 (Product) Release date: Apr 09, 2009

The maintenance release introduces the virtual destructor in the QHsm and QFsm base classes. This is done to allow proper handling of virtual functions in the subclasses of QHsm or QFsm. Please note, however, that the change increases the size of every state machine object by the additional (hidden) virtual pointer (vptr).

Also, this release provides a fix for the compile-time assertions, which did not work correctly for the GNU compiler family.

Finally, the ARM Cortex-M3 examples have been recompiled with the newer IAR EWARM v5.30.

This maintenance release does not change the QP/C++ API in any way, so the release has NO IMPACT on the QP/C++ applications.

The main changes in QP v4.0.04 with respect to earlier version are as follows:

Version 4.0.03 (Product) Release date: Dec 27, 2008

The main purpose of this release is to fix a bug in the QK preemptive kernel, which occurs only when the advanced QK features are used. Specifically, the QK priority-ceiling mutex could interfere with QK thread-local storage (TLS) or QK extended context switch. When the QK mutex is in use, the TLS or the extended context for this task could get saved to an incorrect priority level.

The release 4.0.03 fixes the bug by strictly preserving the semantics of QK_currPrio_ variable. The mutex locking now uses a different variable QK_ceilingPrio_, which represents the ceiling-priority locked by the mutex. The QK scheduler and extended scheduler now perform an additional check to make sure that only tasks with priorities above the ceiling can run. To avoid that additional overhead, the user can define the macro QK_NO_MUTEX, which eliminates the QK mutex API and eliminates the additional tests in the QK schedulers.

This maintenance release does not change the QP/C++ API in any way, so the release has NO IMPACT on the QP/C++ applications.

The main changes in QP v4.0.03 with respect to earlier version are as follows:

Version 4.0.02 (Product) Release date: Nov 15, 2008

This maintenance release does not change the QP/C API in any way, so the release has NO IMPACT on the QP/C++ applications.

The main changes in QP v4.0.02 with respect to earlier version are as follows:

Version 4.0.01 (Product) Release date: June 09, 2008

This maintenace release is made to allow using QS software tracing with the GNU compiler for AVR (WinAVR). Specifically, the output of the strings residing in ROM has been fixed.

This maintenance release does not change the QP/C++ API in any way, so the release has NO IMPACT on the QP/C++ applications.

The main changes in QP v4.0.01 with respect to earlier version are as follows:

Version 4.0.00 (Product) Release date: Apr 07, 2008

This milestone release is made for the book /ref PSiCC2. The book describes in great detail this new release. The older "QP Programmer's Manual" is now phased out and is replaced with this hyper-linked /ref main_page "QP/C++ Reference Manual", which provides very detailed, easily searchable reference to the software. The book /ref PSiCC2 provies in-depth discussion of the relevant concepts as well as the design study of QP v4.0.

The main changes in QP v4.0 with respect to earlier versions are as follows:

Version 3.4.01 (Product)

Release date: Sep 25, 2007

This product release adds the backward-compatibility layer so that previous QP/C++ ports continue to work with the new version.

This product release also comes with the updated "QP Programmer's Manual", which now includes the QS target component and the QSpy host application.

Version 3.4.00 (Beta)

Release date: Sep 03, 2007

This release brings several changes with the overall goal of simplifying and improving consistency across the whole QP family of frameworks (QP/C, QP/C++, and QP-nano).

The main changes are made to the QEP component. The "static transition optimization" has been removed altogether. This simplifies significantly the state machine structure (which now contains just the currently active state). Also, the efficiency is improved for processing the dynamic transitions and the stack usage is lower. This change brings the QEP/C++ implementation much closer to QEP-nano.

The other big change in this release is including the Quantum Spy (QS) component in the distribution. Previously, the QS component was available only under the commercial licensing. It is now open source, just as the rest of QP.

In, the QF/C++ component, the QTimerEvt::publishIn() and QTimeEvt::publishEvery() have been removed, because they introduced a coupling between time events and publish-subscribe. This is undesirable for projects that do not want to include the publish-subscribe facilty.

Finally, the revision history for individual QP/C++ components has been moved from the header files and is now consolidated in the header file doxygen/qpcpp_rev.h.

The updated "QP Programmer's Manual" is in the works...

Version 3.3.00 (Product)

Release date: Jan 23, 2007

The main change in this release is removing #include <stdint.h> from the qep.h header file. This has been done becasue vast majority of embedded compilers for small MCUs actually do not provide the C-99 Standard header file <stdint.h>. Worse, compilers such as Freescale HC(S)08 C/C++ compiler will not include <stdint.h> unless it's in the compilers's include directory, even though the "stdint.h" file might be in the compiler include path.

Removing the "#include <stdint.h>" from qep.h header file allows more flexibility in the way the standard exact-width integer types are defined. For compilers that do not provide the <stdint.h> file, you provide the typedef's in the qep_port.h file before including qep.h. For compilers that do provide the <stdint.h> header file, you simply include this file in the qep_port.h header file before including qep.h.

The changes in release 3.3.00 have impact on all QP ports, because you need to modify the qep_port.h file in all these ports.

The other significant change in this release is adding the macro #Q_ROM_VAR for all constant objects allocated in ROM. The #Q_ROM_VAR macro has been added for the compilers like Freescale HC(S)08, which require far pointers to access the objects in ROM. Please note that specifying the pointer size for accessing a ROM objects is syntactically different than specifying that the object is allocated in ROM (see macro #Q_ROM).

QS is now better integrated with the rest of QP. This is achieved by using the QP macros #Q_ROM, #Q_ROM_VAR, #QF_INT_KEY_TYPE, #QF_INT_LOCK, and #QF_INT_UNLOCK. By simply including the header file "qf_port.h" before "qs.h" in the "qs_port.h" include, you no longer need to manually ensure that QS implements the same policies as the rest of QP. This change still allows using QS standalone (without any other QP components), but then the QP macros must be explicitly defined in the qs_port.h header file. Also the macro #QS_ROM_VAR has been added for all constant objects allocated in ROM (see also macro #Q_ROM_VAR added to QEP). The #QS_ROM_VAR macro has been added for the compilers like Freescale HC(S)08, which require far pointers to access the objects in ROM. Please note that specifying the pointer size for accessing a ROM objects is syntactically different than specifying that the object is allocated in ROM (see macro #Q_ROM).

Finally, in release 3.3.00 the build strategy for QP ports has been simplified as well. Instead of separate Makefile for every QP component, such as QEP, QF, QK, and QS, not the "ports" directory contains a batch file "make.bat" that builds all the libraries at once.

  1. in file qep.h removed "#include <stdint.h>".
  2. in file qassert.h added macro #Q_ROM_VAR for objects allocated in ROM and to signatures of functions accessing these objects.
  3. in file qep.h added macro #Q_ROM_VAR for objects allocated in ROM and to signatures of functions accessing these objects.
  4. in file qep.h added default empty definitions and Doxygen comments for macros #Q_ROM and #Q_ROM_VAR.
  5. in file qep.cpp added macro #Q_ROM_VAR for objects allocated in ROM and to signatures of functions accessing these objects.
  6. in file qf.cpp added macro #Q_ROM_VAR for objects allocated in ROM and to signatures of functions accessing these objects.
  7. in file qk.cpp added macro #Q_ROM_VAR for objects allocated in ROM and to signatures of functions accessing these objects.
  8. in file qep.cpp added Q_ROM_VAR to the signature of QEP::getVersion().
  9. in file qep.cpp changed the version number to "3.3.00".
  10. in file qf.h added macro #Q_ROM_VAR for objects allocated in ROM and to signatures of functions accessing these objects.
  11. in file qf.h removed method QF::getTime() and deleted external variable QF::tickCtr.
  12. deleted obsolete file qa_fifo_.cpp
  13. deleted obsolete file qa_lifo_.cpp
  14. deleted obsolete file qf_time.cpp
  15. in file qf_act.cpp added Q_ROM_VAR to the signature of QF::getVersion()
  16. in file qf_log2.cpp added Q_ROM_VAR to the definition of the lookup.
  17. in file qf_pwr2.cpp added Q_ROM_VAR to the definition of the lookups.
  18. in file qf_tick.cpp removed incrementing QF::tickCtr.
  19. In file qf_act.cpp updated version number to 3.3.00
  20. Updated the "QP Programmer's Manaul" to Revision E
  21. in file qk.h added macro #Q_ROM_VAR for objects allocated in ROM and to signatures of functions accessing these objects.
  22. In file qk.cpp added #Q_ROM_VAR to the signature of QK::getVersion().
  23. In file qk.cpp updated version number to 3.3.00
  24. in file qs.h added macro #QS_ROM_VAR for objects allocated in ROM and to signatures of functions accessing these objects.
  25. In file qs.h added default definitions of the QS macros #Q_ROM, #Q_ROM_VAR, and Q_ROM_BYTE.
  26. In file qs.h added declaration of QS_tickCtr_.
  27. In file qs.cpp added #Q_ROM_VAR to the signature of QS::getVersion().
  28. In file qs_.cpp added #Q_ROM_VAR to the signature of QS::str_ROM_().
  29. In file qs_.cpp added definition of QS_tickCtr_.
  30. In file qs_str.cpp added #Q_ROM_VAR to the signature of QS::str_ROM().
  31. In file qs.cpp updated version number to 3.3.00
  32. Updated the "QP Programmer's Manaul" to Revision E

Version 3.2.05

Release date: Dec 08, 2006

This QF release rolls back the changes made to the reference-counting policy. The reference count of a dynamic event is incremented when the event is posted, but is NOT decremented when the event is retreived from the queue. The reference count is decremented only later, in the garbage collector (QF::gc()).

This release adds direct support for event deferral (the "Deferred Event" state pattern) through methods QActive::defer() and QActive::recall().

  1. In file qf.h added methods QActive::defer() and QActive::recall().
  2. In file qa_get_.cpp removed decrementing the reference count of a dynamic event.
  3. In file qeq_get.cpp removed decrementing the reference count of a dynamic event.
  4. In file qf_gc.cpp restored decrementing of the reference count of a dynamic event.
  5. Added new file qa_defer.cpp that implements QActive::defer() and QActive::recall().
  6. In file qf_act.cpp updated version number to 3.2.05
  7. Updated the "QP Programmer's Manaul" to Revision D

Version 3.2.04 (Beta)

Release date: Dec 01, 2006

This QF release changes the internal policy of reference-counting for dynamic events. The reference count of a dynamic event is now incremented when the event is posted to a queue and decremented when the event is later retreived from the queue. This policy pertains to both active object queues and native QF thread-safe queues (QEQueue).

Previously, the reference count of a dynamic event was not decremented upon retreival of the event from the event queue, but rather in the garbage collector (QF::gc()).

This QK release adds two new features in QK. The first feature added is the extended context switch for CPUs with co-processors, such as the x87 FPU accompanying the x86 CPU. As a fully- preemptive kernel, QK needs to save and restore the context of the co- processor accrosss the asynchronous preemption. This QK release adds a generic mechanism for saving and restoring extened context in the extended scheduler (QK_scheduleExt_()), which is used only at the exit from the interrupts (asynchronous preemptions).

The second feature added is the Thread-Local Storage (TLS) for reentrant libraries, such as the NewLib. This feature allows assigning per-thread memory and providing a hook (callback) activated at every context switch.

  1. In file qf.h eliminated methods QActive::postFIFO_() and QActive::postLIFO_().
  2. In file qf.h promoted method QActive::get_() to the public scope to make it available to various thread-run routines.
  3. In file qf.h promoted method QActive::unsubscribeAll() to the public scope to make it available to various thread-run routines.
  4. In file qf.h promoted method QF::remove_() to the public scope to make it available to various thread-run routines.
  5. In file qf.h added friendship between class QActive and QK_scheduleExt_() and QK_isrExit_().
  6. In file qa_fifo.cpp changed the implementation of QActive::postFIFO() to represent the native QF event queue of an active object.
  7. In file qa_fifo_.cpp removed the implementation of QActive::postFIFO_() and declared the file obsolete (will be removed in future releases).
  8. In file qa_lifo.cpp changed the implementation of QActive::postLIFO() to represent the native QF event queue of an active object.
  9. In file qa_lifo_.cpp removed the implementation of QActive::postLIFO_() and declared the file obsolete (will be removed in future releases).
  10. In file qa_get_.cpp added decrementing the reference count of a dynamic event.
  11. In file qf_gc.cpp removed decrementing of the reference count of a dynamic event. Also changed the test for recycling an event (reference count of zero).
  12. In file qf_pspub.cpp removed incrementing the reference count of a dynamic event.
  13. Removed all uses of the macros #QACTIVE_POST_FIFO_, #QACTIVE_POST_LIFO_ and QACTIVE_GET_. These macros are made now obsolete.
  14. In file qsched.h removed definitions of the obsolete macros #QACTIVE_POST_FIFO_, #QACTIVE_POST_LIFO_, and QACTIVE_GET_.
  15. In file qf_pspub.cpp replaced the macro QACTIVE_POST_FIFO_() with the direct method invocation active_[p]->postFIFO(e).
  16. In file qf_tick.cpp replaced the macro QACTIVE_POST_FIFO_() with the direct method invocation active_[p]->postFIFO(e).
  17. In file qa_run.cpp replaced the macro QACTIVE_POST_GET_() with the direct method invocation get_().
  18. Changed the uC/OS-II port to reflect new policy of handling reference counters inside the dynamic events. Also removed files qa_fifo.cpp and qa_lifo.cpp from the uC/OS-II build.
  19. In file qf_act.cpp updated version number to 3.2.04
  20. In file qk.h updated revision history and added the prototype for the extended scheduler QK_scheduleExt_(). This scheduler implements the generic extended context via macros #QK_EXT_TYPE, QK_EXT_SAVE, and QK_EXT_RESTORE.
  21. In file qk.h removed definitions of the obsolete macros #QACTIVE_POST_FIFO_, #QACTIVE_POST_LIFO_, and QACTIVE_GET_.
  22. In file qk_sched.cpp added logic for handling the TLS via the macro QK_TLS.
  23. Added new file qk_ext.cpp with the definition of the extended scheduler QK_scheduleExt_().
  24. Added the file qk_ext.cpp to the Makefile for QK port to 80x86 with Turbo C++ 1.01.
  25. Extended the QK port to 80x86 with Turbo C++ 1.01 to handle the x87 FPU context.
  26. Extended the QDPP example for QK with Turbo C++ 1.01 to demonstrate threads that use the FPU and require the extended context switch.
  27. In file qk.cpp updated version number to 3.2.04
  28. Updated the "QP Programmer's Manaul" to Revision C

Version 3.2.03 (Product)

Release date: Nov 15, 2006

The main purpose of this release is to adapt the code to the shortcomings of the gcc compiler for handling data in program ROM for Harvard architecture CPUs, such as the Atmel's AVR or the 8051. In such machines, the data space (RAM) and program space (ROM) are accessed with different instructions. The gcc compiler does not automatically synthesize the correct code for accessing data placed in the program ROM, even though __attribute__((__progmem__)) is used. The workaround for the gcc is to add special assembly instructions to transfer the data from the program space to the data space. This version of QP-nano adds macros for each data element allocated to the program space (delcared with the Q_ROM attribute) Please note that commercial compilers, such as IAR, handle data allocated in the program space (ROM) correctly and do not need any workarounds.

This release also fixes a few minor inconsistencies in the code (see the list below):

  1. In file qf.h added default definition of macro #Q_ROM_BYTE
  2. In file qf_set.h added macro #Q_ROM_BYTE to access the lookup tables allocated in ROM (several places).
  3. In file qf_sched.h changed types QF_OS_OBJECT_TYPE and QF_THREAD_TYPE to uint8_t from int8_t
  4. In file qs_dummy.h added dummy definitions of some missing QS macros
  5. In file qa_sub.cpp added macro #Q_ROM_BYTE to access the lookup tables allocated in ROM (several places).
  6. In file qa_usub.cpp added macro #Q_ROM_BYTE to access the lookup tables allocated in ROM (several places).
  7. In file qf_usuba.cpp added macro #Q_ROM_BYTE to access the lookup tables allocated in ROM (several places).
  8. In file qf_pspub.cpp added macro #Q_ROM_BYTE to access the lookup tables allocated in ROM (several places).
  9. In file qf_tick.cpp replaced QF_tickCtr_ with QS::tickCtr_. allocated in ROM (several places).
  10. In file qf_act.cpp updated version number to 3.2.03

Version 3.2.02 (Product)

Release date: Oct 30, 2006/n

  1. In file qs.h replaced macro Q_ROM with QS_ROM
  2. In file qs.h added methods QS::str_ROM_() and QS::str_ROM()
  3. In file qs.h added macros QS_STR_ROM_() and QS_STR_ROM()
  4. In file qs.h modified macros QS_???_DICTIONARY() to use ROM strings
  5. In file qs.h included qs_dummy.h instead of the dummy definitions of the QS macros
  6. In file qs_pkg.h added #ifndef Q_SPY before definition of macro Q_SPY
  7. In file qs_.cpp added definition of the function QS::str_ROM_()
  8. In file qs_str.cpp added definition of the function QS::str_ROM()
  9. In file qs.cpp updated version number to 3.2.02

Version 3.2.01 (Product)

Release date: Sep 01, 2006

  1. In file qep.cpp updated version number to 3.2.01
  2. Added makefiles for building ports of all QP/C++ libraries at once.
  3. In file qf_act.cpp updated version number to 3.2.01
  4. Added makefiles for building ports of all QP/C++ libraries at once.
  5. Created the consolidated manual "QP/C++ Programmer's Manual".
  6. In file qk.cpp updated version number to 3.2.01
  7. Added makefiles for building ports of all QP/C++ libraries at once.
  8. Created the consolidated manual "QP/C++ Programmer's Manual".
  9. In file qs.cpp updated version number to 3.2.01
  10. In file qs.cpp removed superfluous semicolons after QS_INSERT...()
  11. In file qs_.cpp removed superfluous semicolons after QS_INSERT...()
  12. In file qs_str.cpp removed superfluous semicolons after QS_INSERT...()
  13. In file qs_mem.cpp removed superfluous semicolons after QS_INSERT...()
  14. In file qs_f32.cpp removed superfluous semicolons after QS_INSERT...()
  15. In file qs_f64.cpp removed superfluous semicolons after QS_INSERT...()
  16. Added makefiles for building ports of all QP/C++ libraries at once.
  17. Created the consolidated manual "QP/C++ Programmer's Manual".

Version 3.2.00 (Product)

Release date: Aug 07, 2006

  1. In file qep.h added the default definition of Q_ROM in case it's not defined by the user.
  2. In file qassert.h added the macro Q_ROM to allocate constant strings to ROM.
  3. In file qep.cpp updated version number to 3.2.00 # Updated the "QEP/C++ Programmer's Manual".
  4. In file qf.h added function QF_stop() to be called from the application code to stop the framework.
  5. In file qf.h added callback function QF_cleanup() to be called from the QF port to cleanup before exiting to the OS.
  6. In file qf.h deprecated the function QF_exit().
  7. In file qf.h changed the semantics of the QF::onIdle() callback. This callback is now invoked with interrupts LOCKED from the non-preemptive scheduler used in the "vanilla" QF ports to "bare metal" target boards.

    The modification changes the responsibilities of QF::onIdle(), which now MUST at least unlock interrupts. A failure to unlock interrupts in QF::onIdle() will leave the interrupts locked all the time and would prevent the application from running.

    Also, the signature of QF::onIdle() now depends on the interrupt locking policy. In case of the "save and restore interrupt status" policy, the QF::onIdle() callback takes the interrupt lock key as parameter (to be able to unlock the interrups correctly).
  8. In file qf.h used the macro Q_ROM to allocate constant objects to ROM (/sa qep.h). Objects allocated to ROM are: the version strings, and the lookup tables (QF::log2Lkup[], QF::pwr2Lkup[], QF::invPwr2Lkup[], and QF::div8Lkup[].
  9. Added new platform-independent header file qsched.h to provide the interface to the simple non-preemptive scheduler used in the "vanilla" ports of QF to "bare metal" targets. This header file is only applicable to the "vanilla" ports.
  10. Added new platform-independent implementation file qf_run.cpp to implement the simple non-preemptive scheduler used in the "vanilla" ports of QF to "bare metal" targets. This implementation file eliminates the need for qf_port.cpp file in the "vanilla" ports of QF. Also, the qf_run.cpp module should only be placed in the QF library in the vanilla QF ports.
  11. Simplified all "vanilla" ports of QF to use the common platform- independent implementation provided in qf_run.cpp.
  12. Updated QF::onIdle() callback in all examples of "vanilla" ports of QF to unlock interrupts.
  13. Updated the "QF/C++ Programmer's Manual".
  14. in file qk.h added new idle callback QK::onIdle(), which in contrast to QF::onIdle() is invoked with interrupts unlocked.
  15. in file qk.h removed QK_schedLock()/QK_schedUnlock() and replaced them with QK_mutexLock()/QK_mutexUnlock(), with the semantics of returning the mutex.
  16. in file qk.h changed the definitions of macros #QF_SCHED_LOCK/ #QF_SCHED_UNLOCK to use the new QK mutex API.
  17. In file qk.h used the macro Q_ROM to allocate constant objects to ROM (/sa qep.h).
  18. in file qk.h added the typedef for QMutex.
  19. in file qk.cpp replaced the callback QF::onIdle() with the new one QK::onIdle().
  20. removed source file qk_lock.cpp
  21. added source file qk_mutex.cpp
  22. in file qk.cpp changed the version number to 3.2.00
  23. in all QK/C++ examples replaced callback QF::onIdle() with QK::onIdle()
  24. Updated "QK/C++ Programmer's Manual"
  25. In file qs.h replaced QS_QK_SCHED_LOCK/UNLOCK with QS_QK_MUTEX_LOCK/ QS_QK_MUTEX_UNLOCK. Also, changed data accompanying the trace records QS_QK_MUTEX_LOCK/UNLOCK.
  26. In file qs.h used the macro Q_ROM to allocate constant objects to ROM (/sa qep.h).
  27. in file qs.cpp changed the version number to 3.2.00
  28. Updated "QS Programmer's Manual" in PDF.

Version 3.1.06 (Product)

Release date: May 11, 2006

  1. In file qk_sched.cpp removed unlocking of interrupts upon exit from QK::schedule_(). Now QK_schedule_() enters and exits with interrupts LOCKED.
  2. In file qk.h modified macro QACTIVE_OSOBJECT_SIGNAL_() to always unlock the interrupts, regardless if QK_schedule_() has been called or not.
  3. In file qk.cpp added unlocking interrupts after the call to QK_SCHEDULE_() in the function QF::run().
  4. In file qk_lock.cpp modified the function QK::schedUnlock() to always unlock the interrupts upon exit.
  5. Updated licensing information.
  6. Updated "QS/C++ Programmer's Manual" in PDF.

Version 3.1.03 (Product)

Release date: Feb 10, 2006

  1. In file qep.cpp added the Revision History Doxygen comment, which was previously in doxygen/qp.h
  2. In file qf_act.cpp added the Revision History Doxygen comment, which was previously in doxygen/qp.h
  3. In file qf.h augmented comment for QF_run() to cover the case when QF is used with QK.
  4. In file qf.h added the extern declarations of ::QF_tickCtr_, ::QF_intLockNest, and ::QF_isrNest_, which were previously declared in qf_pkg.h.
  5. In file qf.h added macros #QF_QS_INT_LOCK, #QF_QS_INT_UNLOCK(), QF_QS_ISR_ENTRY, and QF_QS_ISR_EXIT, which were previously declared in qs_port.h.
  6. In file ports/linux/gcc/qf_port.h added extern uint8_t QF_running_.
  7. In file qf/80x86/dos/tcpp101/l/qf_port.cpp replaced deprecated QPSet::hasElements() to QPSet::isEmpty().
  8. In file qf/80x86/linux/gcc/qf_port.cpp added QF::run()
  9. In file qeq_init.cpp changed QS_OBJ(this) to QS_OBJ(qSto) to consistently refer to a queue by the ring buffer object
  10. In file qf_pkg.h removed extern ::QF_tickCtr_.
  11. In file qk.h removed extern QK_intLockNest_ and QK_isrNest_. These counters have been moved to QF and renamed in the process to QF_intLockNest_ and QF_isrNest_, respectively.
  12. In file qk.h added QS instrumentatin to #QF_INT_LOCK and #QF_INT_UNLOCK macros for tracing interrupt locking/unlocking. The QS interrupt locking/ unlocking instrumentation has been previously added at the QK port level.
  13. In file qk.h removed macros QK_QS_INT_LOCK()/ QK_QS_INT_UNLOCK(), QK_QS_ISR_ENTRY()/ QK_QS_ISR_EXIT(). These macros have been moved to QF and renamed in the process to QF_QS_INT_LOCK()/ QF_QS_INT_UNLOCK(), QF_QS_ISR_ENTRY()/ QF_QS_ISR_EXIT(), respectively.
  14. In file ports/80x86/qk/tcpp101/l/qk_port.h simplified the definition of the macros #QK_INT_LOCK/ #QK_INT_UNLOCK to NOT contain the QS instrumenation.
  15. In file ports/80x86/qk/tcpp101/l/qk_port.h changed the definitions of QK_ISR_ENTRY and QK_ISR_EXIT to use QF_QS_ISR_ENTRY/ QF_QS_ISR_EXIT.
  16. In file qk.cpp added the Revision History Doxygen comment
  17. In file qk_pkg.h changed the definition of internal QK macros #QK_INT_LOCK_/ #QK_INT_UNLOCK_ to use the QS-instrumented #QF_INT_LOCK/ #QF_INT_UNLOCK.
  18. In file qk_lock.cpp corrected a comment
  19. In file qk_sched.cpp corrected a comment
  20. Provided "QS/C++ Programmer's Manual" in PDF.
  21. In file qs.h changed around the pre-defined records. Added records: QS_QF_INT_LOCK, QS_QF_INT_UNLOCK, QS_QF_ISR_ENTRY, QS_QF_ISR_EXIT. Removed records QS_QK_INT_LOCK, QS_QK_INT_UNLOCK, QS_QK_ISR_ENTRY, QS_QK_ISR_EXIT.
  22. In file qs.h renamed functions QS::filterIn()/ QS::filerOut() to QS::filterOn()/ QS::filerOff(). Correspondingly, changed macros QS_FILTER_IN(), QS_FILTER_OUT(), to QS_FILTER_ON(), QS_FILTER_OFF().
  23. In file qs.h changed the signature and semantics of QS::getByte() to return QS_EOD (End-Of-Data).
  24. In file qs.h changed the signature of QS::getBlock() to take a pointer to uint16_t rather than uint32_t.
  25. In file qs.h eliminated the callback QS::newRecord()
  26. In file qs.h added new callback QS::flush()
  27. In file qs.h added application-level local filter object QS::apObj_. Consistently, added macro QS_FILTER_AP_OBJ() to set the new local filter. Consistently, added object argument to macros QS_BEGIN() and QS_BEGIN_NOLOCK().
  28. In files qs.cpp, qs_.cpp, qs_blk.cpp, qs_byte.cpp, qs_pkg.h renamed some variables and adjusted comments.
  29. Ported the QSpy host applicatoin to Linux. Added TCP/IP input to QSpy. Added new options.
  30. Added redesigned QS port to Linux with TCP/IP data link.

Version 3.1.02 (Product)

Release date: Jan 29, 2006

  1. Removed Quantum Spy (QS) dependency from the QCalc and QHsmTst examples
  2. In file qk.h removed callbacks QK::init(), QK::start(), QK::idle(), and QK::exit(), because they duplicate the QF callbacks.
  3. Modified qk.cpp to define the following QF "callbacks": QF::getPortVersion(), QF::run(), QActive::start(), and QActive::stop_().
  4. Added an argument to the signature of QK::schedLock() to allow selective QK scheduler locking up to the specified priority level.
  5. Changed the implementation of QK::schedLock() in file qk_lock.cpp.
  6. Eliminated the need for qf_port.cpp in the QF/C++ ports for QK.
  7. Simplified elements that go into qk_port.cpp in the QK/C++ ports.
  8. Added the ARM-Simulator port to the standard QK/C++ distribution.
  9. Cleaned-up the 80x86 QK port.
  10. Provided "QK/C++ Programmer's Manual" in PDF.

Version 3.1.01 (Snapshot)

Release date: Oct 18, 2005

  1. Removed Quantum Spy (QS) dependency from the examples
  2. Added Doxygen documentation to the source code
  3. Added running__ member to the QActive structure
  4. Added QF_EVENT_SIZ_SIZE configuration macro and related data type QEventSize. Made the following changes to the signatures: void QF::poolInit(void *poolSto, uint32_t poolSize, QEventSize evtSize); QEvent *QF::new_(QEventSize evtSize, QSignal sig);
  5. In file qmpool.h changed the definition of the QF_MPOOL_SIZ_SIZE macro to remove the dependency on the QF_EVENT_SIZ_SIZE. Macro QF_EVENT_SIZ_SIZE might not be defined by the time qmpool.h is included.
  6. Added explicit definition of the configuration macro QF_EVENT_SIZ_SIZE to all qf_port.h files.
  7. Fixed a bug in function QMPool::init() (file qmp_init.cpp) by changing the type of variable n from uint8_t to QMPoolCtr. The uint8_t data type was failing for bigger block sizes.
  8. Added the QF::onIdle() callback to qf.h
  9. Improved comments in qpset.h
  10. Corrected dependencies in the Makefile for QDPP example (directory 80x86/dos/tcpp101/l and 80x86/dos/tcpp101/s)
  11. Added Linux QF port to the standard QF/C++ distribution.
  12. Released the "QF/C++ Programmer's Manual"

Version 3.1.00 (Beta)

Release date: Oct 03, 2005

  1. Applied new directory structure desribed in Application Note: QP Directory Structure
  2. Added Quantum Spy instrumentation.
  3. Removed file qfsm_tra.cpp.
  4. Introduced file qfsm_dis.cpp.
  5. Applied new directory structure desribed in Application Note: QP Directory Structure
  6. Added Quantum Spy instrumentation.

Version 3.0.11 (Beta)

Release date: Aug 14, 2005

  1. Fixed potential race condition for static transitions
  2. Added assertion in QHsm::execTran() to catch potential path[] array overrun that previously could go undetected.

Version 3.0.10 (Beta)

Release date: Aug 06, 2005

This release contains completely redesigned Quantum Event Processor (QEP). The main focus is on compliance with standards (MISRA, Lint, Coding Standard), better portability, stack-use efficiency.

  1. This release includes a comprehensive "QEP/C++ v3.0 Programmer's Manual" in PDF.
  2. This release contains in-source comments for automatic generation of this Reference Manual with doxygen.
  3. This release includes re-packaging the code into much larger numberof modules (.cpp files) with typically one function per module. This fine-granularity packaging allows for better automatic elimination of unused code at link time and fine-tuning by applying different compiler options to different files.
  4. Although this is a C++ version, it has been still thoroughly checked against the Motor Industry Software Reliability Association (MISRA) "Guidelines for the Use of the C Language in Vehicle Based Software", April 1998, ISBN 0-9524156-9-0 (see also http://www.misra.org.uk). A separate Application Note "QEP/C++ MISRA Compliance Matrix" contains detailed account how QEP/C++ compiles with the 127 MISRA rules (See http://www.state-machine.com/doc/AN_QP_Cpp_MISRA.pdf).
  5. This release is now "lint-free". The source code has been thoroughly checked with the latest version of PC-lint(TM) (version 8.00q) from Gimpel Software (www.gimpel.com). The PC-lint configuration files and output files are included in the distribution. A separate Application Note "QEP/C++ PC-Lint Compliance" contains detailed account how QEP/C++ compiles with PC-Lint. (See http://www.state-machine.com/doc/AN_QP_Cpp_PC-Lint.pdf).
  6. This release is compliant with the "Quantum Leaps Coding Standard" (http://www.state-machine.com/resources/QL_coding_standard.pdf). Among others, all public names are prefixed by "Q_", or "QEP_" to minimize compile-time and link-time name conflicts. In addition, QEP/C++ uses the C99 standard include file <stdint.h> (C99 Standard, Section 7.18). Pre-standard compilers are still supported by placing <stdint.h> in the compiler's header file directory.
  7. The QEvent class has been redesigned to use memory more efficiently. QEvent takes up only 2 bytes now.
  8. The QHsm class now derives from the QFsm class, which promotes better code re-use. In particular, macros Q_INIT() and Q_TRAN() are now common for both traditional non-hierarchical FSMs and for HSMs.
  9. The QFsm class has been redesigned to allow using entry and exit actions. Now the QFsm class strictly avoids recursion, just as QHsm does (MISRA rule 70).
  10. The QPseudoState type has been eliminated and replaced by QState.
  11. The central QHsm class in QEP has been completely redesigned. The basic transition algorithm is essentially the same as described in "PSiCC", however the implementation is very different. The redesign was necessary to comply with the MISRA rules and to eliminate Lint warnings.
  12. The event processor is now strictly non-recursive (MISRA rule 70), that is, event handlers never call themselves, even indirectly. (Previous algorithm required one-level of indirect recursion.)
  13. Dynamic state transition is now default. Static transition optimization is still supported, but considered optional for performance tuning.
  14. The artificial limitation of initial transitions targeting only immediate substate of a composite state has been removed (see "PSiCC" Figure 5.4[a]). Initial transitions can now target any substate, arbitrarily nested within the composite state.
  15. This distribution uses the legacy Borland Turbo C++ 1.01 as the default compiler. Port to DOS with Turbo C++ 1.01 is provided along with GNU-compatible makefiles for the QEP library and sample applications. This compiler is not C99-compliant and does not provide the <stdint.h> header file. However, the port of QEP includes a minimal <stdint.h>, which should be placed into the INCLUDE directory of the Borland Turbo C++ 1.01 installation.
  16. This distribution contains three sample applications: A simple time bomb (QBomb) to demonstrate use of QFsm, a calculator (QCalc), and an exhaustive test of the QHsm class (QHsmTst). All examples are implemented as text-only application compiled with Turbo C++ 1.01. The QHsmTst sample application supports interactive and batch mode for exhaustive testing of the event processor. The source code for QHsmTst demonstrates also how QEP/C++ application code can be MISRA-compliant.
  17. This distribution contains make files for the Turbo C++ 1.01 make utility, as well as GNU-compatible Makefiles.
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