| // Copyright 2023 The Pigweed Authors |
| // |
| // 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 |
| // |
| // https://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 "pw_trace_tokenized/base_trace_service.h" |
| |
| #include "pw_log/log.h" |
| #include "pw_trace_tokenized/trace_buffer.h" |
| |
| namespace pw::trace { |
| BaseTraceService::BaseTraceService(TokenizedTracer& tokenized_tracer, |
| stream::Writer& trace_writer) |
| : tokenized_tracer_(tokenized_tracer), trace_writer_(trace_writer) { |
| tokenized_tracer_.Enable(false); |
| } |
| |
| Status BaseTraceService::Start() { |
| PW_LOG_INFO("Starting Tracing"); |
| |
| if (tokenized_tracer_.IsEnabled()) { |
| PW_LOG_INFO("Tracing already started"); |
| return Status::FailedPrecondition(); |
| } |
| |
| tokenized_tracer_.Enable(true); |
| |
| return OkStatus(); |
| } |
| |
| Status BaseTraceService::Stop() { |
| PW_LOG_INFO("Stopping Tracing"); |
| |
| if (!tokenized_tracer_.IsEnabled()) { |
| PW_LOG_INFO("Tracing not started"); |
| return Status::FailedPrecondition(); |
| } |
| |
| tokenized_tracer_.Enable(false); |
| |
| auto ring_buffer = trace::GetBuffer(); |
| |
| if (ring_buffer->EntryCount() == 0) { |
| PW_LOG_WARN("EntryCount(%zu)", ring_buffer->EntryCount()); |
| return Status::Unavailable(); |
| } else if (ring_buffer->CheckForCorruption() != OkStatus()) { |
| PW_LOG_ERROR("EntryCount(%zu), Corruption(%d)", |
| ring_buffer->EntryCount(), |
| ring_buffer->CheckForCorruption().code()); |
| return Status::Unavailable(); |
| } |
| |
| PW_LOG_INFO("EntryCount(%zu)", ring_buffer->EntryCount()); |
| |
| ConstByteSpan inner_trace_span = trace::DeringAndViewRawBuffer(); |
| if (auto status = trace_writer_.Write(inner_trace_span); |
| status != OkStatus()) { |
| PW_LOG_ERROR("Failed to write trace data: %d)", status.code()); |
| return status; |
| } |
| |
| ring_buffer->Clear(); |
| |
| return OkStatus(); |
| } |
| |
| } // namespace pw::trace |