src/cpp/common/completion_queue.cc

/*
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#include <grpc++/completion_queue.h>

#include <memory>

#include <grpc/grpc.h>
#include <grpc/support/log.h>
#include <grpc/support/time.h>
#include "src/cpp/util/time.h"
#include <grpc++/async_server_context.h>

namespace grpc {

CompletionQueue::CompletionQueue() { cq_ = grpc_completion_queue_create(); }

CompletionQueue::~CompletionQueue() { grpc_completion_queue_destroy(cq_); }

void CompletionQueue::Shutdown() { grpc_completion_queue_shutdown(cq_); }

// Helper class so we can declare a unique_ptr with grpc_event
class EventDeleter {
 public:
  void operator()(grpc_event *ev) { if (ev) grpc_event_finish(ev); }
};

bool CompletionQueue::Next(void **tag, bool *ok) {
  std::unique_ptr<grpc_event, EventDeleter> ev;

  ev.reset(grpc_completion_queue_next(cq_, gpr_inf_future));
  if (ev->type == GRPC_QUEUE_SHUTDOWN) {
    return false;
  }
  std::unique_ptr<FinishFunc> func(static_cast<FinishFunc*>(ev->tag));
  *tag = (*func)();
  *ok = (ev->data.op_complete == GRPC_OP_OK);
  return true;
}

}  // namespace grpc