/*
 * Copyright (C) 2019 The Android Open Source Project
 *
 * 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.
 */

syntax = "proto2";

package perfetto.protos;

// Used to trace the execution of perfetto itself.
message PerfettoMetatrace {
  // See base/metatrace_events.h for definitions.
  oneof record_type {
    uint32 event_id = 1;
    uint32 counter_id = 2;

    // For trace processor metatracing.
    string event_name = 8;
    uint64 event_name_iid = 11;

    string counter_name = 9;
  }
  message Arg {
    oneof key_or_interned_key {
      string key = 1;
      uint64 key_iid = 3;
    }
    oneof value_or_interned_value {
      string value = 2;
      uint64 value_iid = 4;
    }
  }

  // Only when using |event_id|.
  optional uint64 event_duration_ns = 3;

  // Only when using |counter_id|.
  optional int32 counter_value = 4;

  // ID of the thread that emitted the event.
  optional uint32 thread_id = 5;

  // If true the meta-tracing ring buffer had overruns and hence some data is
  // missing from this point.
  optional bool has_overruns = 6;

  // Args for the event.
  repeated Arg args = 7;

  // Interned strings corresponding to the |event_name_iid|, |key_iid| and
  // |value_iid| above.
  message InternedString {
    optional uint64 iid = 1;
    optional string value = 2;
  };
  repeated InternedString interned_strings = 10;
}