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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
syntax = "proto2";
option optimize_for = LITE_RUNTIME;
package metrics;
import "call_stack_profile.proto";
import "perf_data.proto";
// Protocol buffer for collected sample-based profiling data.
// Contains the parameters and data from a single profile collection event.
// Next tag: 10
message SampledProfile {
// Indicates the event that triggered this collection.
enum TriggerEvent {
UNKNOWN_TRIGGER_EVENT = 0;
// The profile was triggered by periodic sampling. Periodically sampled
// profiles are collected once per uniformly sized period interval. Within
// each interval, the sampled data is collected at a random time. For
// example, if the interval is 60 s, then data would be collected at a
// random point in each of the intervals [0, 60 s), [60 s, 120 s), etc.
PERIODIC_COLLECTION = 1;
// The profile was collected upon resume from suspend.
RESUME_FROM_SUSPEND = 2;
// The profile was collected upon restoring a previous session.
RESTORE_SESSION = 3;
}
optional TriggerEvent trigger_event = 1;
// Fields 2-3: Time durations are given in ticks, and represent system uptime
// rather than wall time.
// Time after system boot when the collection took place, in milliseconds.
optional int64 ms_after_boot = 2;
// Time after last login when the collection took place, in milliseconds.
optional int64 ms_after_login = 3;
// The duration for which the machine was suspended prior to collecting the
// sampled profile. Only set when |trigger_event| is RESUME_FROM_SUSPEND.
optional int64 suspend_duration_ms = 5;
// Number of milliseconds after a resume that profile was collected. Only set
// when |trigger_event| is RESUME_FROM_SUSPEND.
optional int64 ms_after_resume = 6;
// Number of tabs restored during a session restore. Only set when
// |trigger_event| is RESTORE_SESSION.
optional int32 num_tabs_restored = 7;
// Number of milliseconds after a session restore that a profile was
// collected. Only set when |trigger_event| is RESTORE_SESSION.
optional int64 ms_after_restore = 8;
// Sampled profile data collected from Linux perf tool.
optional PerfDataProto perf_data = 4;
// Sampled profile data collected by periodic sampling of call stacks.
optional CallStackProfile call_stack_profile = 9;
}