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core: call omp_set_dynamic() for better CPU usage

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Similar to 'OMP_DYNAMIC=TRUE'.
This commit is contained in:
Alexander Alekhin 2018-10-10 19:57:43 +00:00
parent ad93ed720d
commit 4e62900009
1 changed files with 10 additions and 1 deletions
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11
modules/core/src/parallel.cpp
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@ -420,7 +420,16 @@ static int numThreads = -1;
#elif defined HAVE_CSTRIPES
// nothing for C=
#elif defined HAVE_OPENMP
static int numThreadsMax = omp_get_max_threads();
static inline int _initMaxThreads()
{
int maxThreads = omp_get_max_threads();
if (!utils::getConfigurationParameterBool("OPENCV_FOR_OPENMP_DYNAMIC_DISABLE", false))
{
omp_set_dynamic(maxThreads);
}
return numThreads;
}
static int numThreadsMax = _initMaxThreads();
#elif defined HAVE_GCD
// nothing for GCD
#elif defined WINRT