Added ITT traces to GStreamingExecutor

modules/gapi/src/utils/itt.cpp

@@ -0,0 +1,17 @@
+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html.
+//
+// Copyright (C) 2021 Intel Corporation
+
+// TODO: Consider using OpenCV's trace.hpp
+#if defined(OPENCV_WITH_ITT)
+#include <ittnotify.h>
+#include <opencv2/gapi/own/exports.hpp>
+
+namespace cv {
+namespace gimpl {
+    GAPI_EXPORTS __itt_domain* gapi_itt_domain = __itt_domain_create("GAPI Context");
+} // namespace gimpl
+}  // namespace cv
+#endif // OPENCV_WITH_ITT

modules/gapi/src/utils/itt.hpp

@@ -0,0 +1,78 @@
+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html.
+//
+// Copyright (C) 2021 Intel Corporation
+
+#ifndef OPENCV_GAPI_ITT_HPP
+#define OPENCV_GAPI_ITT_HPP
+
+// for GAPI_ITT_NAMED_TRACE_GUARD
+#include <type_traits>
+#include <memory>
+
+#include <opencv2/gapi/util/compiler_hints.hpp>
+
+// NOTE: OPENCV_WITH_ITT is only defined if ITT dependecy is built by OpenCV infrastructure.
+//       There will not be such define in G-API standalone mode.
+// TODO: Consider using OpenCV's trace.hpp
+#if defined(OPENCV_WITH_ITT)
+#include <ittnotify.h>
+
+namespace cv {
+namespace util {
+    template< class T >
+    using remove_reference_t = typename std::remove_reference<T>::type;
+
+    // Home brew ScopeGuard
+    // D will be called automatically with p as argument when ScopeGuard goes out of scope.
+    // call release() on the ScopeGuard object to revoke guard action
+    template<typename T, typename D>
+    auto make_ptr_guard(T* p, D&& d) -> std::unique_ptr<T, util::remove_reference_t<D>> {
+        return {p, std::forward<D>(d)};
+    }
+}  // namespace util
+
+namespace gimpl {
+    extern __itt_domain* gapi_itt_domain;
+    namespace {
+        auto make_itt_guard = [](__itt_string_handle* h) {
+           __itt_task_begin(gapi_itt_domain, __itt_null, __itt_null, (h));
+           return util::make_ptr_guard(reinterpret_cast<int*>(1),
+                                       [](int* ){ __itt_task_end(gapi_itt_domain); });
+        };
+    }  // namespace
+} // namespace gimpl
+} // namespace cv
+
+#define GAPI_ITT_NAMED_TRACE_GUARD(name, h)      auto name = cv::gimpl::make_itt_guard(h); \
+                                                 cv::util::suppress_unused_warning(name)
+#define GAPI_ITT_STATIC_LOCAL_HANDLE_IMPL(n, h)  static __itt_string_handle* n = \
+                                                 __itt_string_handle_create(h)
+#define GAPI_ITT_DYNAMIC_LOCAL_HANDLE_IMPL(n, h) __itt_string_handle* n = \
+                                                 __itt_string_handle_create(h)
+#else // OPENCV_WITH_ITT
+
+namespace cv {
+namespace gimpl {
+struct dumb_guard { void reset() { } };
+} // namespace gimpl
+} // namespace cv
+
+#define GAPI_ITT_NAMED_TRACE_GUARD(name, h)      cv::gimpl::dumb_guard name; \
+                                                 cv::util::suppress_unused_warning(name); \
+                                                 cv::util::suppress_unused_warning(h)
+#define GAPI_ITT_STATIC_LOCAL_HANDLE_IMPL(n, h)  static auto n = h
+#define GAPI_ITT_DYNAMIC_LOCAL_HANDLE_IMPL(n, h) auto n = h
+
+#endif // OPENCV_WITH_ITT
+
+#define GAPI_ITT_AUTO_TRACE_GUARD_IMPL_(LINE, h) GAPI_ITT_NAMED_TRACE_GUARD( \
+                                                    itt_trace_guard_##LINE, h)
+#define GAPI_ITT_AUTO_TRACE_GUARD_IMPL(LINE, h)  GAPI_ITT_AUTO_TRACE_GUARD_IMPL_(LINE, h)
+#define GAPI_ITT_AUTO_TRACE_GUARD(h)             GAPI_ITT_AUTO_TRACE_GUARD_IMPL(__LINE__, h)
+
+#define GAPI_ITT_STATIC_LOCAL_HANDLE(n, h)       GAPI_ITT_STATIC_LOCAL_HANDLE_IMPL(n, h)
+#define GAPI_ITT_DYNAMIC_LOCAL_HANDLE(n, h)      GAPI_ITT_DYNAMIC_LOCAL_HANDLE_IMPL(n, h)
+
+#endif // OPENCV_GAPI_ITT_HPP