chromium/third_party/grpc/src/src/core/ext/filters/client_channel/channel_connectivity.cc

//
// Copyright 2015 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

#include <grpc/support/port_platform.h>

#include <inttypes.h>

#include "absl/base/thread_annotations.h"
#include "absl/status/status.h"
#include "absl/synchronization/mutex.h"
#include "absl/types/optional.h"

#include <grpc/event_engine/event_engine.h>
#include <grpc/grpc.h>
#include <grpc/impl/connectivity_state.h>
#include <grpc/support/log.h>
#include <grpc/support/time.h>

#include "src/core/ext/filters/client_channel/client_channel.h"
#include "src/core/lib/channel/channel_fwd.h"
#include "src/core/lib/channel/channel_stack.h"
#include "src/core/lib/debug/trace.h"
#include "src/core/lib/gprpp/crash.h"
#include "src/core/lib/gprpp/dual_ref_counted.h"
#include "src/core/lib/gprpp/ref_counted_ptr.h"
#include "src/core/lib/gprpp/time.h"
#include "src/core/lib/iomgr/closure.h"
#include "src/core/lib/iomgr/error.h"
#include "src/core/lib/iomgr/exec_ctx.h"
#include "src/core/lib/iomgr/polling_entity.h"
#include "src/core/lib/surface/api_trace.h"
#include "src/core/lib/surface/channel.h"
#include "src/core/lib/surface/completion_queue.h"
#include "src/core/lib/surface/lame_client.h"

namespace grpc_core {
namespace {

bool IsLameChannel(Channel* channel) { … }

}  // namespace
}  // namespace grpc_core

grpc_connectivity_state grpc_channel_check_connectivity_state(
    grpc_channel* c_channel, int try_to_connect) { … }

int grpc_channel_num_external_connectivity_watchers(grpc_channel* c_channel) { … }

int grpc_channel_support_connectivity_watcher(grpc_channel* channel) { … }

namespace grpc_core {
namespace {

class StateWatcher : public DualRefCounted<StateWatcher> { … };

}  // namespace
}  // namespace grpc_core

void grpc_channel_watch_connectivity_state(
    grpc_channel* channel, grpc_connectivity_state last_observed_state,
    gpr_timespec deadline, grpc_completion_queue* cq, void* tag) { … }