Delete async.h

graph/sqlite3/src/async.h

-#ifndef NODE_SQLITE3_SRC_ASYNC_H
-#define NODE_SQLITE3_SRC_ASYNC_H
-
-#include "threading.h"
-#include <node_version.h>
-
-#if defined(NODE_SQLITE3_BOOST_THREADING)
-#include <boost/thread/mutex.hpp>
-#endif
-
-
-// Generic uv_async handler.
-template <class Item, class Parent> class Async {
-    typedef void (*Callback)(Parent* parent, Item* item);
-
-protected:
-    uv_async_t watcher;
-    NODE_SQLITE3_MUTEX_t
-    std::vector<Item*> data;
-    Callback callback;
-public:
-    Parent* parent;
-
-public:
-    Async(Parent* parent_, Callback cb_)
-        : callback(cb_), parent(parent_) {
-        watcher.data = this;
-        NODE_SQLITE3_MUTEX_INIT
-        uv_async_init(uv_default_loop(), &watcher, reinterpret_cast<uv_async_cb>(listener));
-    }
-
-    static void listener(uv_async_t* handle, int status) {
-        Async* async = static_cast<Async*>(handle->data);
-        std::vector<Item*> rows;
-        NODE_SQLITE3_MUTEX_LOCK(&async->mutex)
-        rows.swap(async->data);
-        NODE_SQLITE3_MUTEX_UNLOCK(&async->mutex)
-        for (unsigned int i = 0, size = rows.size(); i < size; i++) {
-            async->callback(async->parent, rows[i]);
-        }
-    }
-
-    static void close(uv_handle_t* handle) {
-        assert(handle != NULL);
-        assert(handle->data != NULL);
-        Async* async = static_cast<Async*>(handle->data);
-        delete async;
-    }
-
-    void finish() {
-        // Need to call the listener again to ensure all items have been
-        // processed. Is this a bug in uv_async? Feels like uv_close
-        // should handle that.
-        listener(&watcher, 0);
-        uv_close((uv_handle_t*)&watcher, close);
-    }
-
-    void add(Item* item) {
-        NODE_SQLITE3_MUTEX_LOCK(&mutex);
-        data.push_back(item);
-        NODE_SQLITE3_MUTEX_UNLOCK(&mutex)
-    }
-
-    void send() {
-        uv_async_send(&watcher);
-    }
-
-    void send(Item* item) {
-        add(item);
-        send();
-    }
-
-    ~Async() {
-        NODE_SQLITE3_MUTEX_DESTROY
-    }
-};
-
-#endif