| /* |
| * Copyright (C) 2024 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. |
| */ |
| |
| #ifndef SRC_TRACE_REDACTION_REDACT_PROCESS_EVENTS_H_ |
| #define SRC_TRACE_REDACTION_REDACT_PROCESS_EVENTS_H_ |
| |
| #include <memory> |
| |
| #include "protos/perfetto/trace/ftrace/ftrace_event_bundle.pbzero.h" |
| #include "src/trace_redaction/redact_sched_events.h" |
| #include "src/trace_redaction/trace_redaction_framework.h" |
| |
| namespace perfetto::trace_redaction { |
| |
| // Goes through a trace packet and filters: |
| // |
| // - task_rename |
| // - task_newtask |
| // - sched_process_free |
| // - print |
| // |
| // Goes through a trace packet and modifies pid and comm: |
| // |
| // - task_newtask |
| // - sched_process_free |
| // - task_rename |
| // |
| // 'print' does not support modification. |
| // |
| // These operations are separate from the scheduling events in an effort to make |
| // the code easier to understand, however they use the same filter and modifier |
| // types and should have the same values when used together. |
| class RedactProcessEvents : public TransformPrimitive { |
| public: |
| base::Status Transform(const Context& context, |
| std::string* packet) const override; |
| |
| template <class Modifier> |
| void emplace_modifier() { |
| modifier_ = std::make_unique<Modifier>(); |
| } |
| |
| template <class Filter> |
| void emplace_filter() { |
| filter_ = std::make_unique<Filter>(); |
| } |
| |
| private: |
| base::Status OnFtraceEvents(const Context& context, |
| protozero::ConstBytes bytes, |
| protos::pbzero::FtraceEventBundle* message) const; |
| |
| base::Status OnFtraceEvent(const Context& context, |
| int32_t cpu, |
| protozero::ConstBytes bytes, |
| std::string* shared_comm, |
| protos::pbzero::FtraceEvent* message) const; |
| |
| base::Status OnProcessFree(const Context& context, |
| uint64_t ts, |
| int32_t cpu, |
| protozero::ConstBytes bytes, |
| std::string* shared_comm, |
| protos::pbzero::FtraceEvent* parent_message) const; |
| |
| base::Status OnNewTask(const Context& context, |
| uint64_t ts, |
| int32_t cpu, |
| protozero::ConstBytes bytes, |
| std::string* shared_comm, |
| protos::pbzero::FtraceEvent* parent_message) const; |
| |
| base::Status OnProcessRename( |
| const Context& context, |
| uint64_t ts, |
| int32_t cpu, |
| protozero::ConstBytes bytes, |
| std::string* shared_comm, |
| protos::pbzero::FtraceEvent* parent_message) const; |
| |
| // Unlike the other On* functions, this one required the event's byte buffer |
| // because it needs the pid from it. |
| base::Status OnPrint(const Context& context, |
| uint64_t ts, |
| protozero::ConstBytes event_bytes, |
| protos::pbzero::FtraceEvent* parent_message) const; |
| |
| std::unique_ptr<SchedEventModifier> modifier_; |
| |
| std::unique_ptr<PidFilter> filter_; |
| }; |
| |
| } // namespace perfetto::trace_redaction |
| |
| #endif // SRC_TRACE_REDACTION_REDACT_PROCESS_EVENTS_H_ |