[LITE][PROFILE] Fix unit test segfault when profiler on (#3744)

* [LITE][PROFILER] Fix unit test segfault when profiler on. test=develop

lite/core/kernel.h

@@ -70,6 +70,10 @@ class KernelBase {
     ch->cl_event = event_;
 #endif
   }
+
+  virtual void SetIsKernelTest(bool is_kernel_test) {
+    is_kernel_test_ = is_kernel_test;
+  }
 #endif
 
   void Launch() {
@@ -94,16 +98,23 @@ class KernelBase {
 #if defined(LITE_WITH_MLU)
     WorkSpace::Global_MLU().AllocReset();
 #endif
+
 #ifdef LITE_WITH_PROFILE
+    if (!is_kernel_test_) {
       profiler_->StopTiming(profile::Type::kCreate, profile_id_, ctx_.get());
       profiler_->StartTiming(profile::Type::kDispatch, profile_id_, ctx_.get());
+    }
+
     Run();
 
-    if (is_first_epoch_for_profiler_) {
+    if (is_first_epoch_for_profiler_ && (!is_kernel_test_)) {
       SetProfileRuntimeKernelInfo(profiler_->GetOpCharacter(profile_id_));
       is_first_epoch_for_profiler_ = false;
     }
+
+    if (!is_kernel_test_) {
       profiler_->StopTiming(profile::Type::kDispatch, profile_id_, ctx_.get());
+    }
 
 #else
     Run();
@@ -197,11 +208,11 @@ class KernelBase {
   profile::Profiler* profiler_{nullptr};
   int profile_id_{-1};
   bool is_first_epoch_for_profiler_{true};
-#endif
-
+  bool is_kernel_test_{true};
 #ifdef LITE_WITH_OPENCL
   cl::Event event_;
 #endif
+#endif
 };
 
 // Light-weight kernel implementation.

lite/core/program.cc

@@ -302,6 +302,7 @@ void Instruction::Run() {
 
 #ifdef LITE_WITH_PROFILE
   if (first_epoch_for_profiler_) {
+    kernel_->SetIsKernelTest(false);
     SetProfileRuntimeOpInfo(profiler_->GetOpCharacter(profile_id_));
     first_epoch_for_profiler_ = false;
   }