mirror of https://github.com/rusefi/opendbc.git
update_string: use cached buffer (#356)
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@ -43,6 +43,7 @@ public:
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class CANParser {
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private:
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const int bus;
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kj::Array<capnp::word> aligned_buf;
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const DBC *dbc = NULL;
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std::unordered_map<uint32_t, MessageState> message_states;
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@ -108,7 +108,7 @@ bool MessageState::update_counter_generic(int64_t v, int cnt_size) {
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CANParser::CANParser(int abus, const std::string& dbc_name,
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const std::vector<MessageParseOptions> &options,
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const std::vector<SignalParseOptions> &sigoptions)
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: bus(abus) {
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: bus(abus), aligned_buf(kj::heapArray<capnp::word>(1024)) {
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dbc = dbc_lookup(dbc_name);
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assert(dbc);
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@ -209,12 +209,15 @@ void CANParser::UpdateValid(uint64_t sec) {
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}
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void CANParser::update_string(const std::string &data, bool sendcan) {
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// format for board, make copy due to alignment issues, will be freed on out of scope
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auto amsg = kj::heapArray<capnp::word>((data.length() / sizeof(capnp::word)) + 1);
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memcpy(amsg.begin(), data.data(), data.length());
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// format for board, make copy due to alignment issues.
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const size_t buf_size = (data.length() / sizeof(capnp::word)) + 1;
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if (aligned_buf.size() < buf_size) {
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aligned_buf = kj::heapArray<capnp::word>(buf_size);
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}
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memcpy(aligned_buf.begin(), data.data(), data.length());
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// extract the messages
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capnp::FlatArrayMessageReader cmsg(amsg);
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capnp::FlatArrayMessageReader cmsg(aligned_buf.slice(0, buf_size));
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cereal::Event::Reader event = cmsg.getRoot<cereal::Event>();
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last_sec = event.getLogMonoTime();
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