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kthread | Killable threads in Python | Architecture library

 by   munshigroup Python Version: Current License: MIT

 by   munshigroup Python Version: Current License: MIT

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kandi X-RAY | kthread Summary

kthread is a Python library typically used in Architecture applications. kthread has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has low support. You can install using 'pip install kthread' or download it from GitHub, PyPI.
Killable threads in Python!.
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Quality
Quality
Security
Security
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kandi-support Support

  • kthread has a low active ecosystem.
  • It has 7 star(s) with 0 fork(s). There are no watchers for this library.
  • It had no major release in the last 12 months.
  • There are 2 open issues and 0 have been closed. There are no pull requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of kthread is current.
kthread Support
Best in #Architecture
Average in #Architecture
kthread Support
Best in #Architecture
Average in #Architecture

quality kandi Quality

  • kthread has 0 bugs and 0 code smells.
kthread Quality
Best in #Architecture
Average in #Architecture
kthread Quality
Best in #Architecture
Average in #Architecture

securitySecurity

  • kthread has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
  • kthread code analysis shows 0 unresolved vulnerabilities.
  • There are 0 security hotspots that need review.
kthread Security
Best in #Architecture
Average in #Architecture
kthread Security
Best in #Architecture
Average in #Architecture

license License

  • kthread is licensed under the MIT License. This license is Permissive.
  • Permissive licenses have the least restrictions, and you can use them in most projects.
kthread License
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Average in #Architecture
kthread License
Best in #Architecture
Average in #Architecture

buildReuse

  • kthread releases are not available. You will need to build from source code and install.
  • Deployable package is available in PyPI.
  • Build file is available. You can build the component from source.
  • Installation instructions, examples and code snippets are available.
  • It has 92 lines of code, 12 functions and 3 files.
  • It has medium code complexity. Code complexity directly impacts maintainability of the code.
kthread Reuse
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kthread Reuse
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Top functions reviewed by kandi - BETA

kandi has reviewed kthread and discovered the below as its top functions. This is intended to give you an instant insight into kthread implemented functionality, and help decide if they suit your requirements.

  • Terminate the server
    • Return the thread s thread id
    • Terminate the thread
    • Raise exception
  • Terminate the worker

    Get all kandi verified functions for this library.

    Get all kandi verified functions for this library.

    kthread Key Features

    The built-in threading.Thread class offers no simple solution to terminate a running thread. kthread.KThread inherits threading.Thread and supplies methods named exit(), kill(), and terminate() that serve the same purpose: attempt to stop a thread if it's running.

    Installation

    copy iconCopydownload iconDownload
    $ pip install kthread
    

    Usage

    copy iconCopydownload iconDownload
    >>> import time
    >>> import kthread
    >>> import sys
    >>> def func():
    >>>     try:
    >>>         while True:
    >>>             time.sleep(0.2)
    >>>     finally:
    >>>         sys.stdout.write("Greetings from Vice City!\n")
    >>>         sys.stdout.flush()
    >>>
    >>> t = kthread.KThread(target = func, name = "KillableThread1")
    >>> t.start()
    >>> t.isAlive()
    True
    >>> t.terminate()
    Greetings from Vice City!
    >>> t.isAlive()
    False
    

    How to get struct i2c_client *client structure inside kernel thread

    copy iconCopydownload iconDownload
    static int dynamic_7seg_kthread(void *data) {
        struct i2c_client *client = data;
    
        while (!kthread_should_stop()) {
            change_7seg_keta(client);
    
            usleep_range(LOOP_SLEEP_US, LOOP_SLEEP_US * 2);
        }
    
        return 0;
    }
    

    How to terminate thread by given name

    copy iconCopydownload iconDownload
    thread_dict = {}
    t1 = kthread.KThread(target=func, name="KillableThread1")
    t2 = kthread.KThread(target=func, name="KillableThread2")
    
    thread_dict[t1.name] = t1
    thread_dict[t2.name] = t2
    
    
    thread_dict["KillableThread1"].terminate()
    
    
    thread_dict = {}
    t1 = kthread.KThread(target=func, name="KillableThread1")
    t2 = kthread.KThread(target=func, name="KillableThread2")
    
    thread_dict[t1.name] = t1
    thread_dict[t2.name] = t2
    
    
    thread_dict["KillableThread1"].terminate()
    
    

    kthread stopped without running

    copy iconCopydownload iconDownload
        ret = -EINTR;
        if (!test_bit(KTHREAD_SHOULD_STOP, &self->flags)) {
            cgroup_kthread_ready();
            __kthread_parkme(self);
            ret = threadfn(data);
        }
        do_exit(ret);
    
        int exit_code;
    
        /* ... */
        printk("Stopping t2\n");
        exit_code = kthread_stop(t2);
        printk("t2 stopped, exit code %d\n", exit_code);
    
        ret = -EINTR;
        if (!test_bit(KTHREAD_SHOULD_STOP, &self->flags)) {
            cgroup_kthread_ready();
            __kthread_parkme(self);
            ret = threadfn(data);
        }
        do_exit(ret);
    
        int exit_code;
    
        /* ... */
        printk("Stopping t2\n");
        exit_code = kthread_stop(t2);
        printk("t2 stopped, exit code %d\n", exit_code);
    

    Kernel Makefile does not create any .ko file for my module

    copy iconCopydownload iconDownload
    obj-m      := hello_module.o
    KERNEL_DIR := /lib/modules/$(shell uname -r)/build
    PWD        := $(shell pwd)
    
    default:
        $(MAKE) -C $(KERNEL_DIR) M=$(PWD) modules
    
    clean:
        $(MAKE) -C $(KERNEL_DIR) M=$(PWD) clean
    
    void __exit hello_module_exit(void) {
        // Not required, but needed to be able to unload the module.
        return;
    }
    
    module_init(hello_module_init);
    module_exit(hello_module_exit);
    MODULE_VERSION("0.1");
    MODULE_DESCRIPTION("Test module");
    MODULE_AUTHOR("You");
    MODULE_LICENSE("GPL");
    
    obj-m      := hello_module.o
    KERNEL_DIR := /lib/modules/$(shell uname -r)/build
    PWD        := $(shell pwd)
    
    default:
        $(MAKE) -C $(KERNEL_DIR) M=$(PWD) modules
    
    clean:
        $(MAKE) -C $(KERNEL_DIR) M=$(PWD) clean
    
    void __exit hello_module_exit(void) {
        // Not required, but needed to be able to unload the module.
        return;
    }
    
    module_init(hello_module_init);
    module_exit(hello_module_exit);
    MODULE_VERSION("0.1");
    MODULE_DESCRIPTION("Test module");
    MODULE_AUTHOR("You");
    MODULE_LICENSE("GPL");
    
    ifdef SUBDIRS
      $(warning ================= WARNING ================)
      $(warning 'SUBDIRS' will be removed after Linux 5.3)
      $(warning )
      $(warning If you are building an individual subdirectory)
      $(warning in the kernel tree, you can do like this:)
      $(warning $$ make path/to/dir/you/want/to/build/)
      $(warning (Do not forget the trailing slash))
      $(warning )
      $(warning If you are building an external module,)
      $(warning Please use 'M=' or 'KBUILD_EXTMOD' instead)
      $(warning ==========================================)
      KBUILD_EXTMOD ?= $(SUBDIRS)
    endif
    

    insmod fails with “Unknown symbol in module”

    copy iconCopydownload iconDownload
    WARNING: "STUB_stop_elevator" [/home/lukas/Desktop/COP4610-Operating-Systems-Project-2-master/elevator/elevator.ko] undefined!
    WARNING: "STUB_issue_request" [/home/lukas/Desktop/COP4610-Operating-Systems-Project-2-master/elevator/elevator.ko] undefined!
    WARNING: "STUB_start_elevator" [/home/lukas/Desktop/COP4610-Operating-Systems-Project-2-master/elevator/elevator.ko] undefined!
    

    Undefined reference to C Macro, but gets redefined error when I define it

    copy iconCopydownload iconDownload
    SET_KERNEL_THREAD_TOP_OFFSET(KERNEL_THREAD_SAVED_KERNEL_TOP_OFFSET, rbx)
    
    "movq " "KERNEL_THREAD_SAVED_KERNEL_TOP_OFFSET" "(%%" "rbx" "), %%rsp \n"
    
    "movq " "208" "(%%" "rbx" "), %%rsp \n"
    
    #define SET_KERNEL_THREAD_TOP_OFFSET(offset, reg) \
      SET_KERNEL_THREAD_TOP_OFFSET_(offset, reg)
    #define SET_KERNEL_THREAD_TOP_OFFSET_(offset, reg) \
      "movq " #offset "(%%" #reg "), %%rsp \n"
    
    SET_KERNEL_THREAD_TOP_OFFSET_(208, rbx)
    
    "movq " "208" "(%%" "rbx" "), %%rsp \n"
    
    SET_KERNEL_THREAD_TOP_OFFSET(KERNEL_THREAD_SAVED_KERNEL_TOP_OFFSET, rbx)
    
    "movq " "KERNEL_THREAD_SAVED_KERNEL_TOP_OFFSET" "(%%" "rbx" "), %%rsp \n"
    
    "movq " "208" "(%%" "rbx" "), %%rsp \n"
    
    #define SET_KERNEL_THREAD_TOP_OFFSET(offset, reg) \
      SET_KERNEL_THREAD_TOP_OFFSET_(offset, reg)
    #define SET_KERNEL_THREAD_TOP_OFFSET_(offset, reg) \
      "movq " #offset "(%%" #reg "), %%rsp \n"
    
    SET_KERNEL_THREAD_TOP_OFFSET_(208, rbx)
    
    "movq " "208" "(%%" "rbx" "), %%rsp \n"
    
    SET_KERNEL_THREAD_TOP_OFFSET(KERNEL_THREAD_SAVED_KERNEL_TOP_OFFSET, rbx)
    
    "movq " "KERNEL_THREAD_SAVED_KERNEL_TOP_OFFSET" "(%%" "rbx" "), %%rsp \n"
    
    "movq " "208" "(%%" "rbx" "), %%rsp \n"
    
    #define SET_KERNEL_THREAD_TOP_OFFSET(offset, reg) \
      SET_KERNEL_THREAD_TOP_OFFSET_(offset, reg)
    #define SET_KERNEL_THREAD_TOP_OFFSET_(offset, reg) \
      "movq " #offset "(%%" #reg "), %%rsp \n"
    
    SET_KERNEL_THREAD_TOP_OFFSET_(208, rbx)
    
    "movq " "208" "(%%" "rbx" "), %%rsp \n"
    
    SET_KERNEL_THREAD_TOP_OFFSET(KERNEL_THREAD_SAVED_KERNEL_TOP_OFFSET, rbx)
    
    "movq " "KERNEL_THREAD_SAVED_KERNEL_TOP_OFFSET" "(%%" "rbx" "), %%rsp \n"
    
    "movq " "208" "(%%" "rbx" "), %%rsp \n"
    
    #define SET_KERNEL_THREAD_TOP_OFFSET(offset, reg) \
      SET_KERNEL_THREAD_TOP_OFFSET_(offset, reg)
    #define SET_KERNEL_THREAD_TOP_OFFSET_(offset, reg) \
      "movq " #offset "(%%" #reg "), %%rsp \n"
    
    SET_KERNEL_THREAD_TOP_OFFSET_(208, rbx)
    
    "movq " "208" "(%%" "rbx" "), %%rsp \n"
    
    SET_KERNEL_THREAD_TOP_OFFSET(KERNEL_THREAD_SAVED_KERNEL_TOP_OFFSET, rbx)
    
    "movq " "KERNEL_THREAD_SAVED_KERNEL_TOP_OFFSET" "(%%" "rbx" "), %%rsp \n"
    
    "movq " "208" "(%%" "rbx" "), %%rsp \n"
    
    #define SET_KERNEL_THREAD_TOP_OFFSET(offset, reg) \
      SET_KERNEL_THREAD_TOP_OFFSET_(offset, reg)
    #define SET_KERNEL_THREAD_TOP_OFFSET_(offset, reg) \
      "movq " #offset "(%%" #reg "), %%rsp \n"
    
    SET_KERNEL_THREAD_TOP_OFFSET_(208, rbx)
    
    "movq " "208" "(%%" "rbx" "), %%rsp \n"
    
    SET_KERNEL_THREAD_TOP_OFFSET(KERNEL_THREAD_SAVED_KERNEL_TOP_OFFSET, rbx)
    
    "movq " "KERNEL_THREAD_SAVED_KERNEL_TOP_OFFSET" "(%%" "rbx" "), %%rsp \n"
    
    "movq " "208" "(%%" "rbx" "), %%rsp \n"
    
    #define SET_KERNEL_THREAD_TOP_OFFSET(offset, reg) \
      SET_KERNEL_THREAD_TOP_OFFSET_(offset, reg)
    #define SET_KERNEL_THREAD_TOP_OFFSET_(offset, reg) \
      "movq " #offset "(%%" #reg "), %%rsp \n"
    
    SET_KERNEL_THREAD_TOP_OFFSET_(208, rbx)
    
    "movq " "208" "(%%" "rbx" "), %%rsp \n"
    

    Community Discussions

    Trending Discussions on kthread
    • clang-analyzer: scan-build ./configure fails looking for pthread support: "_REENTRANT must be defined"
    • How to get struct i2c_client *client structure inside kernel thread
    • pecl install mongodb on ubuntu 20.04
    • How to terminate thread by given name
    • kthread stopped without running
    • Kernel Makefile does not create any .ko file for my module
    • Embedded Buildroot and Yocto Linux crash 50% of the time
    • insmod fails with “Unknown symbol in module”
    • Right way to delete kthread waiting while semaphore will be upped
    • Undefined reference to C Macro, but gets redefined error when I define it
    Trending Discussions on kthread

    QUESTION

    clang-analyzer: scan-build ./configure fails looking for pthread support: "_REENTRANT must be defined"

    Asked 2022-Feb-04 at 16:46

    I'm using pthreads and my scan-build action has failed:

    https://github.com/SentryPeer/SentryPeer/runs/5034401493?check_suite_focus=true

    I see this:

    cat clang_output_*
    conftest.c:59:26: error: "_REENTRANT must be defined"
    #                        error "_REENTRANT must be defined"
                             ^
    

    and

    checking whether /usr/bin/../libexec/ccc-analyzer is Clang... rm: cannot remove 'conftest.plist': Is a directory
    no
    checking whether pthreads work with "-pthread" and "-lpthread"... no
    checking whether pthreads work with -pthread... no
    checking whether pthreads work with -pthreads... no
    checking for the pthreads library -lpthreads... no
    checking whether pthreads work without any flags... no
    checking whether pthreads work with -Kthread... no
    checking whether pthreads work with -pthread... no
    checking whether pthreads work with -pthreads... no
    checking whether pthreads work with -mthreads... no
    checking for the pthreads library -lpthread... no
    checking whether pthreads work with --thread-safe... no
    checking whether pthreads work with -mt... no
    checking for pthread-config... no
    configure: error: POSIX threads support is required
    scan-build: Analysis run complete.
    scan-build: Removing directory '/tmp/scan-build-2022-02-02-202911-1481984-1' because it contains no reports.
    scan-build: No bugs found.
    

    Version: clang-analyzer-13.0.0-3.fc35.noarch

    My autotools builds fine without scan-build on the same Ubuntu version, as per:

    https://github.com/SentryPeer/SentryPeer/actions/runs/1783127976

    Any tips here? Not sure if this is a bug nor where to ask. I've raised it here too - https://github.com/llvm/llvm-project/issues/53552

    Thanks for reading, Gavin.

    ANSWER

    Answered 2022-Feb-04 at 16:46

    _REENTRANT is an obsolete feature-test macro recognized at one time by Glibc and some other C implementations. The supported use case for this macro is for the user to define it in their source code or on the compiler command line to request features or behavior that otherwise might not be provided.

    The configure script you are using seems to be trying to determine whether pthreads support has successfully been enabled by checking whether _REENTRANT has been defined. However, this has always been questionable because it depends on undocumented implementation details of the C library and compiler. It worked at one time, for some C implementations, but it does not work with the C implementation you are now using. I would account that a flaw in clang-static-analyzer.

    Source https://stackoverflow.com/questions/70973862

    Community Discussions, Code Snippets contain sources that include Stack Exchange Network

    Vulnerabilities

    No vulnerabilities reported

    Install kthread

    To install this package, run the following command:.

    Support

    For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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