IVGCVSW-5685 Add CpuAcc specific configuration option numberOfThreads

 * Added ability to set number of threads used in CpuAcc backend
 * Enabled number-of-threads option in ExecuteNetwork
 * Added TfLiteDelegate ModelOptions test
 * Added unsigned int type to BackendOptions.hpp

Signed-off-by: Matthew Sloyan <matthew.sloyan@arm.com>
Change-Id: Ia576d4f45cbe5df3654bc730bb5ebd5181d82b5a

1 files changed, 19 insertions, 1 deletions

diff --git a/src/backends/neon/NeonBackendModelContext.cpp b/src/backends/neon/NeonBackendModelContext.cpp
index 2be71e5ded..270592e94d 100644
--- a/src/backends/neon/NeonBackendModelContext.cpp
+++ b/src/backends/neon/NeonBackendModelContext.cpp
@@ -17,13 +17,22 @@ bool ParseBool(const armnn::BackendOptions::Var& value, bool defaultValue)
     return defaultValue;
 }
 
+unsigned int ParseUnsignedInt(const armnn::BackendOptions::Var& value, unsigned int defaultValue)
+{
+    if (value.IsUnsignedInt())
+    {
+        return value.AsUnsignedInt();
+    }
+    return defaultValue;
+}
+
 } // namespace anonymous
 
 namespace armnn
 {
 
 NeonBackendModelContext::NeonBackendModelContext(const ModelOptions& modelOptions)
-    : m_IsFastMathEnabled(false)
+    : m_IsFastMathEnabled(false), m_NumberOfThreads(0)
 {
    if (!modelOptions.empty())
    {
@@ -33,6 +42,10 @@ NeonBackendModelContext::NeonBackendModelContext(const ModelOptions& modelOption
            {
                m_IsFastMathEnabled |= ParseBool(value, false);
            }
+           if (name == "NumberOfThreads")
+           {
+               m_NumberOfThreads |= ParseUnsignedInt(value, 0);
+           }
        });
    }
 }
@@ -42,4 +55,9 @@ bool NeonBackendModelContext::IsFastMathEnabled() const
     return m_IsFastMathEnabled;
 }
 
+unsigned int NeonBackendModelContext::GetNumberOfThreads() const
+{
+    return m_NumberOfThreads;
+}
+
 } // namespace armnn
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