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Async API for GAPI

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- explanatory  test cases for common usage models
This commit is contained in:
Anton Potapov
2019-05-16 20:40:00 +03:00
parent b58b2c5ae8
commit 3d345ca4c4
3 changed files with 123 additions and 16 deletions
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modules/gapi/include/opencv2/gapi/gcompiled_async.hpp
+5
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@@ -24,6 +24,11 @@ namespace wip {
//These functions asynchronously (i.e. probably on a separate thread of execution) call operator() member function of their first argument with copies of rest of arguments (except callback) passed in.
//The difference between the function is the way to get the completion notification (via callback or a waiting on std::future object)
//If exception is occurred during execution of apply it is transfered to the callback (via function parameter) or passed to future (and will be thrown on call to std::future::get)
//N.B. :
//Input arguments are copied on call to async function (actually on call to cv::gin) and thus do not have to outlive the actual completion of asynchronous activity.
//While Output arguments are "captured" by reference(pointer) and therefore _must_ outlive the asynchronous activity
//(i.e. live at least until callback is called or future is unblocked)
GAPI_EXPORTS void async(GCompiled& gcmpld, std::function<void(std::exception_ptr)>&& callback, GRunArgs &&ins, GRunArgsP &&outs);
GAPI_EXPORTS void async(GCompiled& gcmpld, std::function<void(std::exception_ptr)>&& callback, GRunArgs &&ins, GRunArgsP &&outs, GAsyncContext& ctx);
modules/gapi/include/opencv2/gapi/gcomputation_async.hpp
+5
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@@ -25,6 +25,11 @@ namespace wip {
//These functions asynchronously (i.e. probably on a separate thread of execution) call apply member function of their first argument with copies of rest of arguments (except callback) passed in.
//The difference between the function is the way to get the completion notification (via callback or a waiting on std::future object)
//If exception is occurred during execution of apply it is transfered to the callback (via function parameter) or passed to future (and will be thrown on call to std::future::get)
//N.B. :
//Input arguments are copied on call to async function (actually on call to cv::gin) and thus do not have to outlive the actual completion of asynchronous activity.
//While Output arguments are "captured" by reference(pointer) and therefore _must_ outlive the asynchronous activity
//(i.e. live at least until callback is called or future is unblocked)
GAPI_EXPORTS void async_apply(GComputation& gcomp, std::function<void(std::exception_ptr)>&& callback, GRunArgs &&ins, GRunArgsP &&outs, GCompileArgs &&args = {});
GAPI_EXPORTS void async_apply(GComputation& gcomp, std::function<void(std::exception_ptr)>&& callback, GRunArgs &&ins, GRunArgsP &&outs, GCompileArgs &&args, GAsyncContext& ctx);