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/*
*
* 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.
*
*/
#include <grpc/grpc.h>
#include <node.h>
#include <uv.h>
#include <v8.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) {
const char *error_message;
if (event.success) {
error_message = NULL;
} else {
error_message = "The async function encountered an error";
}
CompleteTag(event.tag, error_message);
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_for_next(NULL);
uv_prepare_init(uv_default_loop(), &prepare);
pending_batches = 0;
}
} // namespace node
} // namespace grpc
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