| /* |
| * |
| * Copyright 2016, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #ifdef GRPC_UV |
| |
| #include <uv.h> |
| #include <node.h> |
| #include <v8.h> |
| #include <grpc/grpc.h> |
| |
| #include "call.h" |
| #include "completion_queue.h" |
| |
| namespace grpc { |
| namespace node { |
| |
| using v8::Local; |
| using v8::Object; |
| using v8::Value; |
| |
| grpc_completion_queue *queue; |
| uv_prepare_t prepare; |
| int pending_batches; |
| |
| void drain_completion_queue(uv_prepare_t *handle) { |
| Nan::HandleScope scope; |
| grpc_event event; |
| (void)handle; |
| do { |
| event = grpc_completion_queue_next( |
| queue, gpr_inf_past(GPR_CLOCK_MONOTONIC), NULL); |
| |
| if (event.type == GRPC_OP_COMPLETE) { |
| Nan::Callback *callback = grpc::node::GetTagCallback(event.tag); |
| if (event.success) { |
| Local<Value> argv[] = {Nan::Null(), |
| grpc::node::GetTagNodeValue(event.tag)}; |
| callback->Call(2, argv); |
| } else { |
| Local<Value> argv[] = {Nan::Error( |
| "The async function encountered an error")}; |
| callback->Call(1, argv); |
| } |
| grpc::node::CompleteTag(event.tag); |
| grpc::node::DestroyTag(event.tag); |
| pending_batches--; |
| if (pending_batches == 0) { |
| uv_prepare_stop(&prepare); |
| } |
| } |
| } while (event.type != GRPC_QUEUE_TIMEOUT); |
| } |
| |
| grpc_completion_queue *GetCompletionQueue() { |
| return queue; |
| } |
| |
| void CompletionQueueNext() { |
| if (pending_batches == 0) { |
| GPR_ASSERT(!uv_is_active((uv_handle_t *)&prepare)); |
| uv_prepare_start(&prepare, drain_completion_queue); |
| } |
| pending_batches++; |
| } |
| |
| void CompletionQueueInit(Local<Object> exports) { |
| queue = grpc_completion_queue_create(NULL); |
| uv_prepare_init(uv_default_loop(), &prepare); |
| pending_batches = 0; |
| } |
| |
| } // namespace node |
| } // namespace grpc |
| |
| #endif /* GRPC_UV */ |