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/*
* Copyright (C) 2018 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 <iterator>
#include "perf_data.pb.h"
namespace android {
namespace perfprofd {
namespace quipper {
template<typename Iterator, typename Predicate>
class FilteredIterator {
public:
using value_type = typename std::iterator_traits<Iterator>::value_type;
using difference_type = typename std::iterator_traits<Iterator>::difference_type;
using reference = typename std::iterator_traits<Iterator>::reference;
using pointer = typename std::iterator_traits<Iterator>::pointer;
FilteredIterator(const Iterator& begin, const Iterator& end, const Predicate& pred)
: iter_(begin), end_(end), pred_(pred) {
filter();
}
reference operator*() const {
return *iter_;
}
pointer operator->() const {
return std::addressof(*iter_);
}
FilteredIterator& operator++() {
++iter_;
filter();
return *this;
}
FilteredIterator end() {
return FilteredIterator(end_, end_, pred_);
}
bool operator==(const FilteredIterator& rhs) const {
return iter_ == rhs.iter_;
}
bool operator!=(const FilteredIterator& rhs) const {
return !(operator==(rhs));
}
private:
void filter() {
while (iter_ != end_ && !pred_(*iter_)) {
++iter_;
}
}
Iterator iter_;
Iterator end_;
Predicate pred_;
};
template <typename Predicate>
using EventFilteredIterator = FilteredIterator<
decltype(static_cast<::quipper::PerfDataProto*>(nullptr)->events().begin()),
Predicate>;
struct CommEventPredicate {
bool operator()(const ::quipper::PerfDataProto_PerfEvent& evt) {
return evt.has_comm_event();
}
};
struct CommEventIterator : public EventFilteredIterator<CommEventPredicate> {
explicit CommEventIterator(const ::quipper::PerfDataProto& proto)
: EventFilteredIterator<CommEventPredicate>(proto.events().begin(),
proto.events().end(),
CommEventPredicate()) {
}
};
struct MmapEventPredicate {
bool operator()(const ::quipper::PerfDataProto_PerfEvent& evt) {
return evt.has_mmap_event();
}
};
struct MmapEventIterator : public EventFilteredIterator<MmapEventPredicate> {
explicit MmapEventIterator(const ::quipper::PerfDataProto& proto)
: EventFilteredIterator<MmapEventPredicate>(proto.events().begin(),
proto.events().end(),
MmapEventPredicate()) {
}
};
struct SampleEventPredicate {
bool operator()(const ::quipper::PerfDataProto_PerfEvent& evt) {
return evt.has_sample_event();
}
};
struct SampleEventIterator : public EventFilteredIterator<SampleEventPredicate> {
explicit SampleEventIterator(const ::quipper::PerfDataProto& proto)
: EventFilteredIterator<SampleEventPredicate>(proto.events().begin(),
proto.events().end(),
SampleEventPredicate()) {
}
};
struct ForkEventPredicate {
bool operator()(const ::quipper::PerfDataProto_PerfEvent& evt) {
return evt.has_fork_event();
}
};
struct ForkEventIterator : public EventFilteredIterator<ForkEventPredicate> {
explicit ForkEventIterator(const ::quipper::PerfDataProto& proto)
: EventFilteredIterator<ForkEventPredicate>(proto.events().begin(),
proto.events().end(),
ForkEventPredicate()) {
}
};
struct ExitEventPredicate {
bool operator()(const ::quipper::PerfDataProto_PerfEvent& evt) {
return evt.has_exit_event();
}
};
struct ExitEventIterator : public EventFilteredIterator<ExitEventPredicate> {
explicit ExitEventIterator(const ::quipper::PerfDataProto& proto)
: EventFilteredIterator<ExitEventPredicate>(proto.events().begin(),
proto.events().end(),
ExitEventPredicate()) {
}
};
} // namespace quipper
} // namespace perfprofd
} // namespace android
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