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About katang

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  1. It is defined as #define SCTIME_CLOCKTIME sc_time(100,sc_core::SC_PS)
  2. Sorry. The question was bad. I meant that the self-notification is delayed, so it is not immediate any more. Do I miss something?
  3. I am using a FIFO in my design and in some cases I need to push back the slightly modified content to the FIFO. I understand that sending immediate self-notification should be avoided. To do so, I modified the sample FIFO code as void write(FIFO_t* c) { if (num_elements == max) wait(FIFO_read_event); data[(first + num_elements) % max] = c; ++ num_elements; // wait(SCTIME_CLOCKTIME); // Avoid immediate notification FIFO_write_event.notify(SCTIME_CLOCKTIME); } In the combination shown above, I receive no warning. However, when I define the notification time by the wait() (now commented out) and notify() brackets are empty, I receive the warning Warning: (W536) immediate self-notification ignored as of IEEE 1666-2011: My guess was that the two cases are equivalent. What is the difference? Maybe only the syntax is checked and not the time difference?
  4. You are absolutely right, thank you. From point of view of programming, it is OK. Till now, however, I never thought about ports that one create them with new 🙂
  5. Sorry, I forgot to mention: I have a master port, like this sc_port<scBus_blocking_if> bus_port; If I understand the point correctly, I shall use pointer, that (still within the constructor) I can change from the default null.
  6. I have some modules of the same class, and only part of the instances needs access to a certain bus, the others should not be linked to the bus. Of course I know during the setup phase, which ones should and which ones should not. The ones that should connect, I can connect, it works fine. At the same time, for the others, I would like to tell the ports they should not be connected. Is there some method to do so (i.e. I want to avoid 'complete binding failed', not more) . Or, shall I subclass a new module class for those modules, with the only difference that they have an extra port? Or, shall I give those modules a very low priority (they surely will not use the bus), and connect them formally to the bus? (maybe it causes unneeded wiring) I.e.
  7. First of all, thank you for the quick and effective help. To be frank, I found the conan approach attractive because otherwise it is rather tedious to start up a new project; I guess the same feeling triggered you to assemble and publish the package. My naive idea was that both myself when I assemble a new working environment as well as my users installing the package on their own system, will set up the system using conan (i.e. we do not need to hunt down the individual packages, sometimes finding version compatibility problems), and after that we can rely on the CMake environment as before. That is I do not need conan in the followings, but I need it heavily when I start up. So, the ideal would be not a "CMake only" (where I DO NEED to deal with the packages and their dependencies), and not a "conan only" (where I come out from the normal CMake environment) handling. I would prefer the combined way. Maybe you should have a look at the the package and devote a couple of sentences in the readme file to this aspect. I think that what you call "conan-only" version, meets my needs (except that in the section "Build the project (it will download the needed libraries) and run it:" after cmake .. a make shall also be inserted). I think it is a very useful contribution, especially for the beginners and non-professional developers. I think, however, that every single development must start immediately at the very beginning with testing; so it would be great to complete this contribution with a testing example. I would suggest to make one more update. In the conanfile.txt you say [options] SystemC:stdcxx=14 and in CMakeLists.txt set(CMAKE_CXX_STANDARD 14) set(CMAKE_CXX_STANDARD_REQUIRED ON) set(CMAKE_CXX_EXTENSIONS OFF) find_package(SystemC REQUIRED) if(SystemC_FOUND) As the SystemC (AFAIK) defaults standard to '98 and it can be set independently; it may make confusion if you use this makefile with another sources, compiled independently (library version mismatch). In my own sources I use set (CMAKE_CXX_STANDARD ${SystemC_CXX_STANDARD} CACHE STRING "C++ standard to build all targets. Supported values are 98, 11, and 14.") of course after find_package(SystemCLanguage CONFIG REQUIRED) I think this can prevent some potential questions and bugs. (BTW: SystemC or SystemClanguage is the preferred utilization)
  8. Well, up to that point is everything fine. In the next step I attempt to add gtest using line gtest/1.8.1@bincrafters/stable The message is $ make [ 50%] Linking CXX executable bin/TransactionExample /usr/bin/ld: cannot find -lgmock_maind /usr/bin/ld: cannot find -lgmockd /usr/bin/ld: cannot find -lgtestd collect2: error: ld returned 1 exit status CMakeFiles/TransactionExample.dir/build.make:94: recipe for target 'bin/TransactionExample' failed make[2]: *** [bin/TransactionExample] Error 1 CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/TransactionExample.dir/all' failed make[1]: *** [CMakeFiles/TransactionExample.dir/all] Error 2 Makefile:83: recipe for target 'all' failed make: *** [all] Error 2 well, I understood that gmock is missing, but AFAIN since 1.8.0 it should come with gtest. In addition, the dependencies are about something similar. No difference if I use conan; somehow gtest depencence is missed.
  9. I recently discovered the conan-style install, but I have difficulties with using it. I started with the quickstart example. My conanfile.txt contains [requires] SystemC/2.3.3@minres/stable SystemCVerification/2.0.0a@minres/stable gtest/1.8.1@bincrafters/stable flex/2.6.4@bincrafters/stable qt5/5.13.0@bincrafters/stable and $ conan remote list conan-center: https://conan.bintray.com [Verify SSL: True] minres: https://api.bintray.com/conan/minres/conan-repo [Verify SSL: True] flex: https://github.com/bincrafters/conan-flex [Verify SSL: True] qt5: https://github.com/bincrafters/conan-qt [Verify SSL: True] gtest: https://github.com/bincrafters/conan-gtest [Verify SSL: True] Shall I do anything else? With this, I receive the message $ sudo conan install .. --build=missing Configuration: [settings] arch=x86_64 arch_build=x86_64 build_type=Release compiler=gcc compiler.libcxx=libstdc++ compiler.version=7 os=Linux os_build=Linux [options] [build_requires] [env] WARN: SystemCVerification/2.0.0a@minres/stable requirement SystemC/2.3.2@minres/stable overridden by your conanfile to SystemC/2.3.3@minres/stable flex/2.6.4@bincrafters/stable: Not found in local cache, looking in remotes... flex/2.6.4@bincrafters/stable: Trying with 'conan-center'... flex/2.6.4@bincrafters/stable: Trying with 'minres'... flex/2.6.4@bincrafters/stable: Trying with 'flex'... flex/2.6.4@bincrafters/stable: Trying with 'qt5'... flex/2.6.4@bincrafters/stable: Trying with 'gtest'... ERROR: Unable to find 'flex/2.6.4@bincrafters/stable' in remotes I.e. gtest can be installed with conan, the rest not ; the same happens with the command line $ conan install qt/5.13.0@bincrafters/stable Do I wrong something? BTW: I receive the message WARN: SystemCVerification/2.0.0a@minres/stable requirement SystemC/2.3.2@minres/stable overridden by your conanfile to SystemC/2.3.3@minres/stable Which is true, I really changed in the conanfile.txt to 2.3.3. Maybe SystemCVerification should be updated. Also, I wanted to install TLM. Does it have similar conan recipe and store?
  10. I have found in the examples of the SCFTGU book examples "a heartbeat function similar to a clock except it is more efficient than an sc_signal<bool>." It is used in one of the examples of the next chapter, but not at all in later examples, like the ones appended to 2.3.3. Is there any specific reason of it? Also, if defines only posedge_event() ; Can it be used in the simple_bus example, where negedge is also used?
  11. https://matthieu-moy.fr/sc-during/doc/html/index.html I have found some library, which for the first look sound interesting and useful Is there any collective experience with it?
  12. It will install to any directory you want. Is there any reason why this simple advice ins not written in the installation instructions? Without this s CMAKE_INSTALL_PREFIX remains undefined,, as I told.
  13. Hello Ameya Vikram Singh, As per the CMake documentation you cited: This means (for me, at least), that it is initialized "on the first run of CMake ", i.e. it is uninitialized during the first run. I also told, that on a "virgin" system during the first run setting the CMAKE_INSTALL_PREFIX is protected by an if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT) block. I.e. when I install CMake for the first time (2.3.2 or above) it WILL NOT SET my CMAKE_INSTALL_PREFIX to the newly installed version, and it leads to countless hours of debugging. The installation instructions do not mention how to install the new version for the unlucky gui, who did successfully install previously 2.3.1 and is not member of the developer team, and so does not know what is not mentioned in the installation instructions. For those who start with at least 2.3.2, it is not a problem. I found the solution as to comment out the protection. That solved my problem, but probably is not the right way to install SystemC. Otherwise even now, after my questions and answers of the experts, I do not know what is the right way of installing the new version, when some other project already uses an older version of SystemC, and because of this, the install script directs the linker to the wrong version.
  14. Maybe this is the intention, but it does not do so: when I run it in the first time, it simply leaves CMAKE_INSTALL_PREFIX undefined, since the settings you mention are only read inside this if-protected lines. In my eyes a very bad idea to leave and undefined initial value in a code, by intention. Yes, it is. And is is also time-wasting. BTW: it is the first time I saw that the CMAKE_INSTALL_PREFIX is to be set manually. The readme attached to the library mentions that it is one one the very important variables, but does not mention it shall be set manually. It does not help a lot. It is a long time to hunt down that this is the reason, and after that I see that environtal variables are only read inside these protected lines. No warning, no docs. Maybe good for developers (just seconds to use), but days for users to figure this out.
  15. Then my bet is that on your system CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT is defined somehow. Otherwise line 541 if (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT) prevents to define, among others CMAKE_INSTALL_PREFIX After that I commented out that conditional, I also succeeded. BTW: what that conditional makes there? I do not think it is properly used According to CMake docs, that is, when I run CMake for the first time, it will not set CMAKE_INSTALL_PREFIX at all, that is it will be installed to the default path, independently of whether I have defined my own (initially obviously experimental) path. So, my initial attempt with a new version will fail. I would suggest to make an install attempt on a virgin system, before making a new release public.
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