rusefi
/
opendbc
mirror of https://github.com/rusefi/opendbc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

update_string: use cached buffer (#356)

This commit is contained in:
Dean Lee 2021-03-09 23:10:39 +08:00 committed by GitHub
parent b1fe8b1292
commit 419471253a
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 9 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
can/common.h
View File

@ -43,6 +43,7 @@ public:
class CANParser {
private:
const int bus;
kj::Array<capnp::word> aligned_buf;
const DBC *dbc = NULL;
std::unordered_map<uint32_t, MessageState> message_states;

13
can/parser.cc
View File

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