add glyph store and load glyph pbfs

src/platform/request.cpp

@@ -12,25 +12,33 @@ Request::Request(const std::string &url,
       res(std::make_unique<Response>(callback)),
       cancelled(false),
       loop(loop) {
-    // Add a check handle without a callback to keep the default loop running.
-    // We don't have a real handler attached to the default loop right from the
-    // beginning, because we're using asynchronous messaging to perform the actual
-    // request in the request thread. Only after the request is complete, we
-    // create an actual work request that is attached to the default loop.
-    async = new uv_async_t();
-    async->data = new std::unique_ptr<Response>();
-    uv_async_init(loop, async, complete);
+    if (loop) {
+        // Add a check handle without a callback to keep the default loop running.
+        // We don't have a real handler attached to the default loop right from the
+        // beginning, because we're using asynchronous messaging to perform the actual
+        // request in the request thread. Only after the request is complete, we
+        // create an actual work request that is attached to the default loop.
+        async = new uv_async_t();
+        async->data = new std::unique_ptr<Response>();
+        uv_async_init(loop, async, complete);
+    }
 }
 
 Request::~Request() {
 }
 
 void Request::complete() {
-    // We're scheduling the response callback to be invoked in the event loop.
-    // Since the Request object will be deleted before the callback is invoked,
-    // we move over the Response object to be owned by the async handle.
-    ((std::unique_ptr<Response> *)async->data)->swap(res);
-    uv_async_send(async);
+    if (loop) {
+        // We're scheduling the response callback to be invoked in the event loop.
+        // Since the Request object will be deleted before the callback is invoked,
+        // we move over the Response object to be owned by the async handle.
+        ((std::unique_ptr<Response> *)async->data)->swap(res);
+        uv_async_send(async);
+    } else {
+        // We're calling the response callback immediately. We're currently on an
+        // arbitrary thread, but that's okay.
+        res->callback(res.get());
+    }
 }
 
 void Request::complete(uv_async_t *async) {