1 // Copyright 2021 The Pigweed Authors
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not
4 // use this file except in compliance with the License. You may obtain a copy of
5 // the License at
6 //
7 // https://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
12 // License for the specific language governing permissions and limitations under
13 // the License.
14 //==============================================================================
15
16 #include "pw_trace_tokenized/trace_rpc_service_nanopb.h"
17
18 #include "pw_log/log.h"
19 #include "pw_trace_tokenized/trace_buffer.h"
20 #include "pw_trace_tokenized/trace_tokenized.h"
21
22 namespace pw::trace {
23
TraceService(TokenizedTracer & tokenized_tracer)24 TraceService::TraceService(TokenizedTracer& tokenized_tracer)
25 : tokenized_tracer_(tokenized_tracer) {}
26
Enable(const pw_trace_TraceEnableMessage & request,pw_trace_TraceEnableMessage & response)27 pw::Status TraceService::Enable(const pw_trace_TraceEnableMessage& request,
28 pw_trace_TraceEnableMessage& response) {
29 tokenized_tracer_.Enable(request.enable);
30 response.enable = tokenized_tracer_.IsEnabled();
31 return PW_STATUS_OK;
32 }
33
IsEnabled(const pw_trace_Empty &,pw_trace_TraceEnableMessage & response)34 pw::Status TraceService::IsEnabled(const pw_trace_Empty&,
35 pw_trace_TraceEnableMessage& response) {
36 response.enable = tokenized_tracer_.IsEnabled();
37 return PW_STATUS_OK;
38 }
39
GetTraceData(const pw_trace_Empty &,ServerWriter<pw_trace_TraceDataMessage> & writer)40 void TraceService::GetTraceData(
41 const pw_trace_Empty&, ServerWriter<pw_trace_TraceDataMessage>& writer) {
42 pw_trace_TraceDataMessage buffer = pw_trace_TraceDataMessage_init_default;
43 size_t size = 0;
44 pw::ring_buffer::PrefixedEntryRingBuffer* trace_buffer =
45 pw::trace::GetBuffer();
46
47 while (trace_buffer->PeekFront(as_writable_bytes(span(buffer.data.bytes)),
48 &size) != pw::Status::OutOfRange()) {
49 trace_buffer->PopFront()
50 .IgnoreError(); // TODO: b/242598609 - Handle Status properly
51 buffer.data.size = size;
52 pw::Status status = writer.Write(buffer);
53 if (!status.ok()) {
54 PW_LOG_ERROR("Error sending trace; abandoning trace dump. Error: %s",
55 status.str());
56 break;
57 }
58 }
59 writer.Finish().IgnoreError(); // TODO: b/242598609 - Handle Status properly
60 }
61 } // namespace pw::trace
62