[mempool] more tests

block-cache/copier.cc

@@ -33,16 +33,16 @@ copier::issue(copy_op const &op)
 			throw runtime_error("couldn't allocate buffer");
 	}
 
-	copy_job job(op, *data);
+	copy_job job(op, data);
 	job.op.read_complete = job.op.write_complete = false;
 	unsigned key = genkey(); // used as context for the io_engine
 
-	cerr << "data = " << &(*data) << "\n";
+	cerr << "data = " << data << "\n";
 	engine_.issue_io(src_handle_,
 			 io_engine::READ,
 			 to_sector(op.src_b),
 			 to_sector(op.src_e),
-			 *data,
+			 data,
 			 key);
 	jobs_.insert(make_pair(key, job));
 }

block-cache/mem_pool.cc

@@ -26,15 +26,15 @@ mempool::~mempool()
 	::free(mem_);
 }
 
-boost::optional<void *>
+void *
 mempool::alloc()
 {
 	if (free_.empty())
-		return optional<void *>();
+		return nullptr;
 
 	mempool_detail::alloc_block &b = free_.front();
 	free_.pop_front();
-	return optional<void *>(reinterpret_cast<void *>(&b));
+	return reinterpret_cast<void *>(&b);
 }
 
 void

block-cache/mem_pool.h

@@ -23,7 +23,7 @@ namespace bcache {
 		mempool(size_t block_size, size_t total_mem, size_t alignment = 8);
 		~mempool();
 
-		boost::optional<void *> alloc();
+		void *alloc();
 		void free(void *data);
 
 	private: