From 38939ffbdf2ddffd4e7d4a283796c5cbab14e804 Mon Sep 17 00:00:00 2001
From: Finn Williams <Finn.Williams@arm.com>
Date: Thu, 16 Apr 2020 16:57:59 +0100
Subject: IVGCVSW-4701 Make the GUIDGenerator thread safe

Signed-off-by: Finn Williams <Finn.Williams@arm.com>
Change-Id: Ide55731c51a8b77d71bfa4f3f7f0d122bb643d87
---
 src/profiling/ProfilingGuidGenerator.hpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src/profiling/ProfilingGuidGenerator.hpp')

diff --git a/src/profiling/ProfilingGuidGenerator.hpp b/src/profiling/ProfilingGuidGenerator.hpp
index a31903585c..dc6e22b10a 100644
--- a/src/profiling/ProfilingGuidGenerator.hpp
+++ b/src/profiling/ProfilingGuidGenerator.hpp
@@ -8,6 +8,7 @@
 #include "armnn/profiling/IProfilingGuidGenerator.hpp"
 
 #include <functional>
+#include <mutex>
 
 namespace armnn
 {
@@ -24,6 +25,7 @@ public:
     /// Return the next random Guid in the sequence
     inline ProfilingDynamicGuid NextGuid() override
     {
+        std::lock_guard<std::mutex> sequencelock(m_SequenceMutex);
         ProfilingDynamicGuid guid(m_Sequence);
         m_Sequence++;
         if (m_Sequence >= MIN_STATIC_GUID)
@@ -42,8 +44,9 @@ public:
     }
 
 private:
-    uint64_t m_Sequence;
     std::hash<std::string> m_Hash;
+    uint64_t m_Sequence;
+    std::mutex m_SequenceMutex;
 };
 
 } // namespace profiling
-- 
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