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Slight speed improvement for CAN transmit

pull/4/head
Paul Hollinsky 2018-10-19 13:42:48 -04:00
parent d037709963
commit cb57f06564
1 changed files with 4 additions and 1 deletions
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5
communication/encoder.cpp
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@ -51,6 +51,9 @@ bool Encoder::encode(std::vector<uint8_t>& result, const std::shared_ptr<Message
} }
} }
// Pre-allocate as much memory as we will possibly need for speed
result.reserve(17 + dataSize);
result.push_back(0 /* byte count here later */ << 4 | (uint8_t(canmsg->network.getNetID()) & 0xF)); result.push_back(0 /* byte count here later */ << 4 | (uint8_t(canmsg->network.getNetID()) & 0xF));
result.insert(result.end(), {0,0}); // Two bytes for Description ID, big endian, not used in API currently result.insert(result.end(), {0,0}); // Two bytes for Description ID, big endian, not used in API currently
@ -95,7 +98,7 @@ bool Encoder::encode(std::vector<uint8_t>& result, const std::shared_ptr<Message
// Fill in the length byte from earlier // Fill in the length byte from earlier
result[0] |= result.size() << 4; result[0] |= result.size() << 4;
break; break;
} } // End of Network::Type::CAN
default: default:
switch(message->network.getNetID()) { switch(message->network.getNetID()) {
case Network::NetID::Device: case Network::NetID::Device: