From 21cce426d844c64dac5de7985b97857bb3724e88 Mon Sep 17 00:00:00 2001
From: Jonathan <jonathanslew@outlook.com>
Date: Tue, 29 May 2018 10:15:19 -0700
Subject: fixes seg fault on concurrentKernels, speeds up
 concurrent_streams_empty, adds check for null stream case on
 cudaStreamWaitEvent

---
 libcuda/cuda_runtime_api.cc | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'libcuda')

diff --git a/libcuda/cuda_runtime_api.cc b/libcuda/cuda_runtime_api.cc
index f130a37..33da17f 100644
--- a/libcuda/cuda_runtime_api.cc
+++ b/libcuda/cuda_runtime_api.cc
@@ -1203,6 +1203,10 @@ __host__ cudaError_t CUDARTAPI cudaStreamWaitEvent(cudaStream_t stream, cudaEven
 {
 	CUevent_st *e = get_event(event);
 	if( !e ) return g_last_cudaError = cudaErrorUnknown;
+   if (!stream){
+	   printf("GPGPU-Sim API: Warning: cudaStreamWaitEvent on NULL stream not currently supported.\n");
+		return g_last_cudaError = cudaErrorInvalidValue;
+   }
 	struct CUstream_st *s = (struct CUstream_st *)stream;
 	stream_operation op(s,e,flags);
 	g_stream_manager->push(op);
-- 
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