Contexts update + buffer flushing + cleanup (#338)

* Update lib/rocprofiler-sdk/context/context.*

- get_registered_contexts functions (local copy)

* Update lib/rocprofiler-sdk/hsa/{queue,queue_controller}.cpp

- remove ROCPROFILER_BUFFER_TRACING_MEMORY_COPY code

* Update tests/kernel-tracing/kernel-tracing.cpp

- move stop() and flush() in tool_fini to before reporting of sizes of data collected

* Update lib/rocprofiler-sdk/hsa/hsa.*

- remove stale set_callback / activity_functor_t code

* Update lib/rocprofiler-sdk/buffer.cpp

- full wait instead of returning busy when buffer is busy
- use task_group::join instead of task_group::wait to fully wait for tasks to finish (bug fix)

* Update lib/rocprofiler-sdk/agent.cpp

- support agent mapping for CPU agents

* Remove direct access to vector of registered contexts

source/lib/rocprofiler-sdk/context/context.hpp

@@ -174,21 +174,24 @@ start_context(rocprofiler_context_id_t id);
 /// \brief disable the contexturation.
 rocprofiler_status_t stop_context(rocprofiler_context_id_t);
 
-using unique_context_vec_t =
-    common::container::stable_vector<allocator::unique_static_ptr_t<context>, 8>;
-using active_context_vec_t = common::container::stable_vector<std::atomic<const context*>, 8>;
-using context_array_t      = common::container::small_vector<const context*>;
+using context_array_t = common::container::small_vector<const context*>;
 
-unique_context_vec_t&
-get_registered_contexts();
+context*
+get_mutable_registered_context(rocprofiler_context_id_t id);
+
+const context*
+get_registered_context(rocprofiler_context_id_t id);
 
 using context_filter_t = bool (*)(const context*);
 
 inline bool
-default_context_filter(const context* val)
-{
-    return (val != nullptr);
-}
+default_context_filter(const context* val);
+
+context_array_t&
+get_registered_contexts(context_array_t& data, context_filter_t filter = default_context_filter);
+
+context_array_t
+get_registered_contexts(context_filter_t filter = default_context_filter);
 
 context_array_t&
 get_active_contexts(context_array_t& data, context_filter_t filter = default_context_filter);
@@ -200,5 +203,11 @@ void deactivate_client_contexts(rocprofiler_client_id_t);
 
 // should only be called if the client failed to initialize
 void deregister_client_contexts(rocprofiler_client_id_t);
+
+inline bool
+default_context_filter(const context* val)
+{
+    return (val != nullptr);
+}
 }  // namespace context
 }  // namespace rocprofiler