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/*
* Copyright (C) 2020 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/traced/probes/ftrace/discover_vendor_tracepoints.h"
#include "perfetto/ext/base/string_splitter.h"
#include "perfetto/ext/base/string_utils.h"
#include "src/traced/probes/ftrace/atrace_wrapper.h"
namespace perfetto {
namespace vendor_tracepoints {
std::vector<GroupAndName> DiscoverTracepoints(AtraceHalWrapper* hal,
FtraceProcfs* ftrace,
const std::string& category) {
ftrace->DisableAllEvents();
hal->EnableCategories({category});
std::vector<GroupAndName> events;
for (const std::string& group_name : ftrace->ReadEnabledEvents()) {
size_t pos = group_name.find('/');
PERFETTO_CHECK(pos != std::string::npos);
events.push_back(
GroupAndName(group_name.substr(0, pos), group_name.substr(pos + 1)));
}
hal->DisableAllCategories();
ftrace->DisableAllEvents();
return events;
}
std::map<std::string, std::vector<GroupAndName>> DiscoverVendorTracepoints(
AtraceHalWrapper* hal,
FtraceProcfs* ftrace) {
std::map<std::string, std::vector<GroupAndName>> results;
for (const auto& category : hal->ListCategories()) {
results.emplace(category, DiscoverTracepoints(hal, ftrace, category));
}
return results;
}
} // namespace vendor_tracepoints
} // namespace perfetto
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