From 6c0949969a5df71df85397ce3338f0154e6727ac Mon Sep 17 00:00:00 2001
From: Roman Musin <995612+roman-r-m@users.noreply.github.com>
Date: Tue, 23 Jan 2024 19:19:07 +0000
Subject: Native image + a few smaller optimisations (#564)

* Inline parsing name and station to avoid constantly updating the offset field (-100ms)

* Remove Worker class, inline the logic into lambda

* Accumulate results in an int matrix instead of using result row (-50ms)

* Use native image
---
 prepare_roman-r-m.sh | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'prepare_roman-r-m.sh')

diff --git a/prepare_roman-r-m.sh b/prepare_roman-r-m.sh
index f83a3ff..a0593b2 100755
--- a/prepare_roman-r-m.sh
+++ b/prepare_roman-r-m.sh
@@ -17,3 +17,12 @@
 
 source "$HOME/.sdkman/bin/sdkman-init.sh"
 sdk use java 21.0.1-graal 1>&2
+
+# ./mvnw clean verify removes target/ and will re-trigger native image creation.
+if [ ! -f target/CalculateAverage_roman_r_m_image ]; then
+
+    JAVA_OPTS="--enable-preview -dsa"
+    NATIVE_IMAGE_OPTS="--initialize-at-build-time=dev.morling.onebrc.CalculateAverage_roman_r_m --gc=epsilon -Ob -O3 -march=native --strict-image-heap $JAVA_OPTS"
+
+    native-image $NATIVE_IMAGE_OPTS -cp target/average-1.0.0-SNAPSHOT.jar -o target/CalculateAverage_roman_r_m_image dev.morling.onebrc.CalculateAverage_roman_r_m
+fi
\ No newline at end of file
-- 
cgit v1.2.3