Remove superfluous graph_generator::m_buffer_mutex

include/graph_generator.h

@@ -103,9 +103,6 @@ namespace detail {
 
 		std::unordered_map<node_id, per_node_data> m_node_data;
 
-		// This mutex mainly serves to protect per-buffer data structures, as new buffers might be added at any time.
-		std::mutex m_buffer_mutex;
-
 		void set_epoch_for_new_commands(per_node_data& node_data, const command_id epoch);
 
 		void reduce_execution_front_to(abstract_command* new_front);

src/graph_generator.cc

@@ -23,7 +23,6 @@ namespace detail {
 	}
 
 	void graph_generator::add_buffer(buffer_id bid, const cl::sycl::range<3>& range) {
-		std::lock_guard<std::mutex> lock(m_buffer_mutex);
 		// Initialize the whole range to all nodes, so that we always use local buffer ranges when they haven't been written to (on any node) yet.
 		// TODO: Consider better handling for when buffers are not host initialized
 		std::vector<node_id> all_nodes(m_num_nodes);
@@ -37,7 +36,6 @@ namespace detail {
 	}
 
 	void graph_generator::build_task(const task& tsk, const std::vector<graph_transformer*>& transformers) {
-		std::lock_guard<std::mutex> lock(m_buffer_mutex);
 		// TODO: Maybe assert that this task hasn't been processed before
 
 		const auto tid = tsk.get_id();