From 6f36face98071fc5f29c7d73ca742b549c1ae83f Mon Sep 17 00:00:00 2001
From: deanlee <deanlee3@gmail.com>
Date: Sun, 9 Jun 2024 15:11:31 +0800
Subject: [PATCH] pre-alloc tmp_vals

---
 can/common.h  | 1 +
 can/parser.cc | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/can/common.h b/can/common.h
index 46b3159b9f..0134729b60 100644
--- a/can/common.h
+++ b/can/common.h
@@ -43,6 +43,7 @@ class MessageState {
   std::vector<Signal> parse_sigs;
   std::vector<double> vals;
   std::vector<std::vector<double>> all_vals;
+  std::vector<double> tmp_vals;
 
   uint64_t last_seen_nanos;
   uint64_t check_threshold;
diff --git a/can/parser.cc b/can/parser.cc
index d36ec75bad..153e811894 100644
--- a/can/parser.cc
+++ b/can/parser.cc
@@ -33,7 +33,6 @@ int64_t get_raw_value(const std::vector<uint8_t> &msg, const Signal &sig) {
 
 
 bool MessageState::parse(uint64_t nanos, const std::vector<uint8_t> &dat) {
-  std::vector<double> tmp_vals(parse_sigs.size());
   bool checksum_failed = false;
   bool counter_failed = false;
 
@@ -128,6 +127,7 @@ CANParser::CANParser(int abus, const std::string& dbc_name, const std::vector<st
     state.parse_sigs = msg->sigs;
     state.vals.resize(msg->sigs.size());
     state.all_vals.resize(msg->sigs.size());
+    state.tmp_vals.resize(msg->sigs.size());
   }
 }
 
@@ -147,6 +147,7 @@ CANParser::CANParser(int abus, const std::string& dbc_name, bool ignore_checksum
       .ignore_counter = ignore_counter,
     };
 
+    state.tmp_vals.resize(msg.sigs.size());
     for (const auto& sig : msg.sigs) {
       state.parse_sigs.push_back(sig);
       state.vals.push_back(0);