Boost packaged_task
Webyou could wrap the task by packaged_task and let boost::unique_future to gain the result of the task. When you launch the thread, you could just return the boost::unique_future and wait for the result of the task. After the task is finish, you could continue your job. It is very like boost::condition_variable but design for one off event. Webteacher 840 views, 12 likes, 1 loves, 5 comments, 3 shares, Facebook Watch Videos from E2 Test Prep: Use code: "DAVID10" at the checkout for $10 USD off any PTE test prep package or package upgrade...
Boost packaged_task
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WebAug 15, 2015 · The problem seems to be that even though the jobs have finished, these boost::packaged_task (s), which are shared pointers, are still being referenced by io_service when it goes out of scope. I'm not sure why they are being referenced after the jobs have finished. Could it be that the boost::packaged_task is being used incorrectly? WebAug 31, 2011 · So as shown here we can get shared future from packaged task. So I try such function on linux: template void pool_item ( boost::shared_ptr< boost::packaged_task > pt) { boost::shared_future fi= pt->get_future (); // error //... but I get error calling it:
WebMay 19, 2010 · I have created a queue of boost::function objects, which are the tasks to be executed. I'd like to use boost::packaged_task for tasks I need to wait for, such that I can use a boost::unique_future to check the result. However, I'm having trouble stuffing a boost::packaged_task into a boost::function. WebOct 18, 2013 · std::packaged_task< void () > task ( [] () { std::cout << "hello world" << std::endl; } ); std::thread t ( std::move (task) ); t.join (); Why is this so? Edit: As a workaround, it is possible to use std::promise to get a …
Web- The packaged_task object is the asynchronous provider and is expected to set the shared state as ready at some point by calling the stored task. - The future object is an … WebAug 25, 2011 · If you prefer to use something else it shouldn’t be too hard to replace boost. The way this works is that in ConnectData we create a CWorker object that knows what the parameters were and is passed to a packaged_task. The packaged_task is linked to a shared_promise which holds the value calculated by the thread.
Webyou could wrap the task by packaged_task and let boost::unique_future. to gain the result of the task. When you launch the thread, you could. just return the boost::unique_future …
WebSep 5, 2012 · boost::packaged_task task(work); // boost's packaged_task don't take the full signature as parameter, it takes the return type only ftr = task.get_future(); boost::thread thread( boost::move(task) ); thread.detach(); for( auto& ftr : work_in_progress ) ftr.get(); # endif #else for( int i = 0; i < 42; ++i ) work(); #endif … iphoneweb検索方法WebJan 31, 2024 · Member Functions. Some of the member functions in packaged_task are: Operator=- it moves packaged tasks and it’s a public member function. Swap- It just … orangecrateWebA packaged_task wraps a callable element and allows its result to be retrieved asynchronously. It is similar to std::function, but transferring its result automatically to a future object. The object contains internally two elements: orangecrate ramonaWebJun 19, 2024 · packaged_task::operator bool Specifies whether the object has an associated asynchronous state. operator bool() const noexcept; Return Value trueif the object has an associated asynchronous state; otherwise, false. packaged_task::packaged_task Constructor Constructs a packaged_taskobject. … iphonewatchultraiphonewinrWebOct 27, 2013 · While I cannot find the limitation explicitly noted in the documentation, the change history notes that the ability to supply argument types to Boost.Thread's … iphonewiki icloud bypass ipswWebApr 14, 2024 · To install and configure, add the following commands to Dockerfile: Configure the above commands with your New Relic license key, app name, and other settings. Replace the placeholders with your actual credentials. Step 2. Create hello.php. Step 3. Package your code in Docker image. iphoneworld