From 5bee4dfe908663fccfdc770d1584eeb60cba656c Mon Sep 17 00:00:00 2001
From: foreman <dl.swbuild@amd.com>
Date: Thu, 13 Jun 2019 15:40:39 -0400
Subject: [PATCH] P4 to Git Change 1815357 by cpaquot@cpaquot-ocl-lc-lnx on
 2019/06/12 16:24:09

	SWDEV-192384 - [HIP] Fixed case where start and stop events are the same for ElapsedTime.

Affected files ...

... //depot/stg/opencl/drivers/opencl/api/hip/hip_event.cpp#11 edit
---
 hipamd/api/hip/hip_event.cpp | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/hipamd/api/hip/hip_event.cpp b/hipamd/api/hip/hip_event.cpp
index b7929461cb..1507629321 100644
--- a/hipamd/api/hip/hip_event.cpp
+++ b/hipamd/api/hip/hip_event.cpp
@@ -56,6 +56,23 @@ hipError_t Event::synchronize() {
 
 hipError_t Event::elapsedTime(Event& eStop, float& ms) {
   amd::ScopedLock startLock(lock_);
+
+  if (this == &eStop) {
+    if (event_ == nullptr) {
+      return hipErrorInvalidResourceHandle;
+    }
+
+    if (flags & hipEventDisableTiming) {
+      return hipErrorInvalidResourceHandle;
+    }
+
+    if (!ready()) {
+      return hipErrorNotReady;
+    }
+
+    ms = 0.f;
+    return hipSuccess;
+  }
   amd::ScopedLock stopLock(eStop.lock_);
 
   if (event_ == nullptr ||
@@ -189,7 +206,7 @@ hipError_t hipEventElapsedTime(float *ms, hipEvent_t start, hipEvent_t stop) {
   hip::Event* eStart = reinterpret_cast<hip::Event*>(start);
   hip::Event* eStop  = reinterpret_cast<hip::Event*>(stop);
 
-  return HIP_RETURN(eStart->elapsedTime(*eStop, *ms));
+  HIP_RETURN(eStart->elapsedTime(*eStop, *ms));
 }
 
 hipError_t hipEventRecord(hipEvent_t event, hipStream_t stream) {