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_preprocessor/util.h"
20 #include "pw_trace_tokenized/trace_buffer.h"
21 #include "pw_trace_tokenized/trace_tokenized.h"
22
23 namespace pw::trace {
24
Enable(const pw_trace_TraceEnableMessage & request,pw_trace_TraceEnableMessage & response)25 pw::Status TraceService::Enable(const pw_trace_TraceEnableMessage& request,
26 pw_trace_TraceEnableMessage& response) {
27 TokenizedTrace::Instance().Enable(request.enable);
28 response.enable = TokenizedTrace::Instance().IsEnabled();
29 return PW_STATUS_OK;
30 }
31
IsEnabled(const pw_trace_Empty &,pw_trace_TraceEnableMessage & response)32 pw::Status TraceService::IsEnabled(const pw_trace_Empty&,
33 pw_trace_TraceEnableMessage& response) {
34 response.enable = TokenizedTrace::Instance().IsEnabled();
35 return PW_STATUS_OK;
36 }
37
GetTraceData(const pw_trace_Empty &,ServerWriter<pw_trace_TraceDataMessage> & writer)38 void TraceService::GetTraceData(
39 const pw_trace_Empty&, ServerWriter<pw_trace_TraceDataMessage>& writer) {
40 pw_trace_TraceDataMessage buffer = pw_trace_TraceDataMessage_init_default;
41 size_t size = 0;
42 pw::ring_buffer::PrefixedEntryRingBuffer* trace_buffer =
43 pw::trace::GetBuffer();
44
45 while (trace_buffer->PeekFront(as_writable_bytes(span(buffer.data.bytes)),
46 &size) != pw::Status::OutOfRange()) {
47 trace_buffer->PopFront()
48 .IgnoreError(); // TODO(b/242598609): Handle Status properly
49 buffer.data.size = size;
50 pw::Status status = writer.Write(buffer);
51 if (!status.ok()) {
52 PW_LOG_ERROR("Error sending trace; abandoning trace dump. Error: %s",
53 status.str());
54 break;
55 }
56 }
57 writer.Finish().IgnoreError(); // TODO(b/242598609): Handle Status properly
58 }
59 } // namespace pw::trace
60