Disallow tracing control outside of init to save some microseconds (#1353)

d1d8c4a7 · Jaikrishnan Menon · Scott Cyphers · f277e1c2 · d1d8c4a7
Commit d1d8c4a7 authored Aug 07, 2018 by Jaikrishnan Menon Committed by Scott Cyphers Aug 07, 2018
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cpu_tracing.cpp src/ngraph/runtime/cpu/cpu_tracing.cpp +2 -1

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--- a/src/ngraph/runtime/cpu/cpu_tracing.cpp
+++ b/src/ngraph/runtime/cpu/cpu_tracing.cpp
@@ -73,5 +73,6 @@ void ngraph::runtime::cpu::GenerateTimeline(const std::vector<OpAttributes>& op_

 bool ngraph::runtime::cpu::IsTracingEnabled()
 {
-    return (std::getenv("NGRAPH_CPU_TRACING") != nullptr);
+    static bool enabled = (std::getenv("NGRAPH_CPU_TRACING") != nullptr);
+    return enabled;
 }