1 /*
2 * Copyright (C) 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "src/trace_processor/importers/common/event_tracker.h"
18
19 #include <math.h>
20 #include <optional>
21
22 #include "perfetto/base/logging.h"
23 #include "perfetto/ext/base/utils.h"
24 #include "src/trace_processor/importers/common/args_tracker.h"
25 #include "src/trace_processor/importers/common/process_tracker.h"
26 #include "src/trace_processor/importers/common/track_tracker.h"
27 #include "src/trace_processor/storage/stats.h"
28 #include "src/trace_processor/types/trace_processor_context.h"
29 #include "src/trace_processor/types/variadic.h"
30
31 namespace perfetto {
32 namespace trace_processor {
33
EventTracker(TraceProcessorContext * context)34 EventTracker::EventTracker(TraceProcessorContext* context)
35 : context_(context) {}
36
37 EventTracker::~EventTracker() = default;
38
PushProcessCounterForThread(int64_t timestamp,double value,StringId name_id,UniqueTid utid)39 std::optional<CounterId> EventTracker::PushProcessCounterForThread(
40 int64_t timestamp,
41 double value,
42 StringId name_id,
43 UniqueTid utid) {
44 auto opt_id = PushCounter(timestamp, value, kInvalidTrackId);
45 if (opt_id) {
46 PendingUpidResolutionCounter pending;
47 pending.row = *context_->storage->counter_table().id().IndexOf(*opt_id);
48 pending.utid = utid;
49 pending.name_id = name_id;
50 pending_upid_resolution_counter_.emplace_back(pending);
51 }
52 return opt_id;
53 }
54
PushCounter(int64_t timestamp,double value,TrackId track_id)55 std::optional<CounterId> EventTracker::PushCounter(int64_t timestamp,
56 double value,
57 TrackId track_id) {
58 if (timestamp < max_timestamp_) {
59 PERFETTO_DLOG(
60 "counter event (ts: %" PRId64 ") out of order by %.4f ms, skipping",
61 timestamp, static_cast<double>(max_timestamp_ - timestamp) / 1e6);
62 context_->storage->IncrementStats(stats::counter_events_out_of_order);
63 return std::nullopt;
64 }
65 max_timestamp_ = timestamp;
66
67 auto* counter_values = context_->storage->mutable_counter_table();
68 return counter_values->Insert({timestamp, track_id, value}).id;
69 }
70
PushCounter(int64_t timestamp,double value,TrackId track_id,SetArgsCallback args_callback)71 std::optional<CounterId> EventTracker::PushCounter(
72 int64_t timestamp,
73 double value,
74 TrackId track_id,
75 SetArgsCallback args_callback) {
76 auto maybe_counter_id = PushCounter(timestamp, value, track_id);
77 if (maybe_counter_id) {
78 auto inserter = context_->args_tracker->AddArgsTo(*maybe_counter_id);
79 args_callback(&inserter);
80 }
81 return maybe_counter_id;
82 }
83
FlushPendingEvents()84 void EventTracker::FlushPendingEvents() {
85 const auto& thread_table = context_->storage->thread_table();
86 for (const auto& pending_counter : pending_upid_resolution_counter_) {
87 UniqueTid utid = pending_counter.utid;
88 std::optional<UniquePid> upid = thread_table.upid()[utid];
89
90 TrackId track_id = kInvalidTrackId;
91 if (upid.has_value()) {
92 track_id = context_->track_tracker->InternProcessCounterTrack(
93 pending_counter.name_id, *upid);
94 } else {
95 // If we still don't know which process this thread belongs to, fall back
96 // onto creating a thread counter track. It's too late to drop data
97 // because the counter values have already been inserted.
98 track_id = context_->track_tracker->InternThreadCounterTrack(
99 pending_counter.name_id, utid);
100 }
101 context_->storage->mutable_counter_table()->mutable_track_id()->Set(
102 pending_counter.row, track_id);
103 }
104 pending_upid_resolution_counter_.clear();
105 }
106
107 } // namespace trace_processor
108 } // namespace perfetto
109