move requests to global threadpool

include/llmr/util/threadpool.hpp

@@ -4,30 +4,33 @@
 #include <pthread.h>
 #include <forward_list>
 #include <queue>
+#include <string>
+#include "std.hpp"
 
 namespace llmr {
 namespace util {
 
 class Threadpool {
+private:
     class Worker {
     public:
-        Worker(Threadpool& pool);
+        Worker(Threadpool& pool, const std::string name);
         ~Worker();
         static void *loop(void *ptr);
 
     private:
         Threadpool& pool;
+        const std::string name;
         pthread_t thread;
     };
 
 public:
-    typedef void (*Callback)(void *);
-    typedef std::pair<Callback, void *> Task;
     Threadpool(int max_workers = 4);
-
+    typedef void (*Callback)(void *);
     void add(Callback callback, void *data);
 
 private:
+    typedef std::pair<Callback, void *> Task;
     const int max_workers;
     pthread_mutex_t mutex = PTHREAD_RECURSIVE_MUTEX_INITIALIZER;
     pthread_cond_t condition = PTHREAD_COND_INITIALIZER;
@@ -36,6 +39,8 @@ private:
     std::queue<Task> tasks;
 };
 
+extern std::unique_ptr<Threadpool> threadpool;
+
 }
 }