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Merge pull request #19747 from alalek:issue_19733

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This commit is contained in:
Alexander Alekhin 2021-03-19 12:53:31 +00:00
commit 94f00cf096
3 changed files with 22 additions and 8 deletions
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6
modules/core/CMakeLists.txt
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@ -18,8 +18,12 @@ ocv_add_dispatched_file_force_all(test_intrin256 TEST AVX2 AVX512_SKX)
ocv_add_dispatched_file_force_all(test_intrin512 TEST AVX512_SKX)
set(PARALLEL_ENABLE_PLUGINS_DEFAULT ON)
if(EMSCRIPTEN OR IOS OR WINRT)
set(PARALLEL_ENABLE_PLUGINS_DEFAULT OFF)
endif()
# parallel backends configuration
set(PARALLEL_ENABLE_PLUGINS "ON" CACHE BOOL "Allow building parallel plugin support")
set(PARALLEL_ENABLE_PLUGINS "${PARALLEL_ENABLE_PLUGINS_DEFAULT}" CACHE BOOL "Allow building parallel plugin support")
# TODO building plugins with OpenCV is not supported yet
#set(PARALLEL_PLUGIN_LIST "" CACHE STRING "List of parallel backends to be compiled as plugins (tbb, openmp or special value 'all')")
#string(REPLACE "," ";" PARALLEL_PLUGIN_LIST "${PARALLEL_PLUGIN_LIST}") # support comma-separated list (,) too

6
modules/core/src/parallel/parallel.cpp
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@ -63,7 +63,11 @@ std::shared_ptr<ParallelForAPI> createParallelForAPI()
try
{
CV_LOG_DEBUG(NULL, "core(parallel): trying backend: " << info.name << " (priority=" << info.priority << ")");
CV_Assert(info.backendFactory);
if (!info.backendFactory)
{
CV_LOG_DEBUG(NULL, "core(parallel): factory is not available (plugins require filesystem support): " << info.name);
continue;
}
std::shared_ptr<ParallelForAPI> backend = info.backendFactory->create();
if (!backend)
{

18
modules/core/src/parallel/registry_parallel.impl.hpp
View File

@ -6,17 +6,23 @@
// Not a standalone header, part of parallel.cpp
//
#include "opencv2/core/utils/filesystem.private.hpp" // OPENCV_HAVE_FILESYSTEM_SUPPORT
namespace cv { namespace parallel {
#if OPENCV_HAVE_FILESYSTEM_SUPPORT && defined(PARALLEL_ENABLE_PLUGINS)
#define DECLARE_DYNAMIC_BACKEND(name) \
ParallelBackendInfo { \
1000, name, createPluginParallelBackendFactory(name) \
}
},
#else
#define DECLARE_DYNAMIC_BACKEND(name) /* nothing */
#endif
#define DECLARE_STATIC_BACKEND(name, createBackendAPI) \
ParallelBackendInfo { \
1000, name, std::make_shared<cv::parallel::StaticBackendFactory>([=] () -> std::shared_ptr<cv::parallel::ParallelForAPI> { return createBackendAPI(); }) \
}
},
static
std::vector<ParallelBackendInfo>& getBuiltinParallelBackendsInfo()
@ -24,14 +30,14 @@ std::vector<ParallelBackendInfo>& getBuiltinParallelBackendsInfo()
static std::vector<ParallelBackendInfo> g_backends
{
#ifdef HAVE_TBB
DECLARE_STATIC_BACKEND("TBB", createParallelBackendTBB),
DECLARE_STATIC_BACKEND("TBB", createParallelBackendTBB)
#elif defined(PARALLEL_ENABLE_PLUGINS)
DECLARE_DYNAMIC_BACKEND("ONETBB"), // dedicated oneTBB plugin (interface >= 12000, binary incompatibe with TBB 2017-2020)
DECLARE_DYNAMIC_BACKEND("TBB"), // generic TBB plugins
DECLARE_DYNAMIC_BACKEND("ONETBB") // dedicated oneTBB plugin (interface >= 12000, binary incompatibe with TBB 2017-2020)
DECLARE_DYNAMIC_BACKEND("TBB") // generic TBB plugins
#endif
#ifdef HAVE_OPENMP
DECLARE_STATIC_BACKEND("OPENMP", createParallelBackendOpenMP),
DECLARE_STATIC_BACKEND("OPENMP", createParallelBackendOpenMP)
#elif defined(PARALLEL_ENABLE_PLUGINS)
DECLARE_DYNAMIC_BACKEND("OPENMP") // TODO Intel OpenMP?
#endif