chromium/third_party/grpc/src/src/core/lib/debug/trace.h

//
//
// 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.
//
//

#ifndef GRPC_SRC_CORE_LIB_DEBUG_TRACE_H
#define GRPC_SRC_CORE_LIB_DEBUG_TRACE_H

#include <grpc/support/port_platform.h>

#include <atomic>

#include "src/core/lib/gprpp/global_config.h"
#include "src/core/lib/gprpp/memory.h"

GPR_GLOBAL_CONFIG_DECLARE_STRING(grpc_trace);

// TODO(veblush): Remove this deprecated function once codes depending on this
// function are updated in the internal repo.
void grpc_tracer_init(const char* env_var_name);

void grpc_tracer_init();
void grpc_tracer_shutdown(void);

namespace grpc_core {

class TraceFlag;
class TraceFlagList { … };

namespace testing {
void grpc_tracer_enable_flag(TraceFlag* flag);
}

class TraceFlag { … };

#define GRPC_TRACE_FLAG_ENABLED(f) …

#ifndef NDEBUG
DebugOnlyTraceFlag;
#else
class DebugOnlyTraceFlag {
 public:
  constexpr DebugOnlyTraceFlag(bool /*default_enabled*/, const char* /*name*/) {
  }
  constexpr bool enabled() const { return false; }
  constexpr const char* name() const { return "DebugOnlyTraceFlag"; }

 private:
  void set_enabled(bool /*enabled*/) {}
};
#endif

}  // namespace grpc_core

#endif  // GRPC_SRC_CORE_LIB_DEBUG_TRACE_H