| /* |
| * Copyright (C) 2018 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. |
| */ |
| |
| #include "src/trace_processor/sched_tracker.h" |
| #include "perfetto/base/utils.h" |
| #include "src/trace_processor/process_tracker.h" |
| #include "src/trace_processor/trace_processor_context.h" |
| |
| namespace perfetto { |
| namespace trace_processor { |
| |
| SchedTracker::SchedTracker(TraceProcessorContext* context) |
| : context_(context){}; |
| |
| SchedTracker::~SchedTracker() = default; |
| |
| void SchedTracker::PushSchedSwitch(uint32_t cpu, |
| uint64_t timestamp, |
| uint32_t prev_pid, |
| uint32_t prev_state, |
| base::StringView prev_comm, |
| uint32_t next_pid) { |
| PERFETTO_DCHECK(cpu < base::kMaxCpus); |
| SchedSwitchEvent* prev = &last_sched_per_cpu_[cpu]; |
| // If we had a valid previous event, then inform the storage about the |
| // slice. |
| if (prev->valid() && prev->next_pid != 0 /* Idle process (swapper/N) */) { |
| uint64_t duration = timestamp - prev->timestamp; |
| StringId prev_thread_name_id = context_->storage->InternString(prev_comm); |
| UniqueTid utid = context_->process_tracker->UpdateThread( |
| prev->timestamp, prev->next_pid /* == prev_pid */, prev_thread_name_id); |
| context_->storage->AddSliceToCpu(cpu, prev->timestamp, duration, utid); |
| } |
| |
| // If the this events previous pid does not match the previous event's next |
| // pid, make a note of this. |
| if (prev_pid != prev->next_pid) { |
| context_->storage->AddMismatchedSchedSwitch(); |
| } |
| |
| // Update the map with the current event. |
| prev->timestamp = timestamp; |
| prev->prev_pid = prev_pid; |
| prev->prev_state = prev_state; |
| prev->next_pid = next_pid; |
| }; |
| |
| } // namespace trace_processor |
| } // namespace perfetto |