buffer wrap-thread startup fix

Change-Id: I857cff63d28dcc068eddbd3ae2bc0193c428ec41

src/core/roctracer.cpp

@@ -1198,8 +1198,6 @@ PUBLIC_API roctracer_status_t roctracer_set_properties(
   API_METHOD_PREFIX
   switch (domain) {
     case ACTIVITY_DOMAIN_HSA_OPS: {
-      roctracer::trace_buffer.StartWorkerThread();
-
       // HSA OPS properties
       roctracer::hsa_ops_properties_t* ops_properties = reinterpret_cast<roctracer::hsa_ops_properties_t*>(properties);
       HsaApiTable* table = reinterpret_cast<HsaApiTable*>(ops_properties->table);

src/core/trace_buffer.h

@@ -231,7 +231,7 @@ class TraceBuffer : protected TraceBufferBase {
 
   void wrap_buffer(const pointer_t pointer) {
     std::lock_guard<mutex_t> lck(mutex_);
-    if (work_thread_started_ == false) FATAL("worker thread is not started");
+    if (work_thread_started_ == false) StartWorkerThread();
 
     PTHREAD_CALL(pthread_mutex_lock(&work_mutex_));
     if (pointer >= end_pointer_) {