From 1d3d5b3e6e16ea3f47e8a633e6170525764bdcd1 Mon Sep 17 00:00:00 2001
From: Chaoscaot <chaos@chaoscaot.de>
Date: Wed, 9 Apr 2025 14:39:14 +0200
Subject: [PATCH] **Optimize ProQue initialization with OnceLock**

Replaced repeated ProQue initialization with a static OnceLock to ensure efficient and thread-safe reuse. This minimizes the overhead of recreating the ProQue instance while maintaining correct behavior by dynamically updating its dimensions.
---
 schemsearch-ocl-matcher/src/lib.rs | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/schemsearch-ocl-matcher/src/lib.rs b/schemsearch-ocl-matcher/src/lib.rs
index 4c860a6..967c858 100644
--- a/schemsearch-ocl-matcher/src/lib.rs
+++ b/schemsearch-ocl-matcher/src/lib.rs
@@ -1,3 +1,4 @@
+use std::sync::OnceLock;
 use ocl::{Buffer, MemFlags, ProQue, Platform};
 use ocl::SpatialDims::Three;
 use schemsearch_common::{Match, SearchBehavior};
@@ -5,6 +6,8 @@ use math::round::ceil;
 
 const KERNEL: &str = include_str!("kernel.cl");
 
+static PRO_QUEU_CELL: OnceLock<ProQue> = OnceLock::new();
+
 pub fn ocl_available() -> bool {
     !Platform::list().is_empty()
 }
@@ -40,10 +43,15 @@ fn search_ocl(
     
     let skip_amount = ceil((pattern_blocks * (1.0 - search_behavior.threshold)) as f64, 0) as i32;
 
-    let pro_que = ProQue::builder()
-        .src(KERNEL)
-        .dims(Three(schem_width, schem_height, schem_length))
-        .build()?;
+    let cell = &PRO_QUEU_CELL;
+    let mut pro_que = cell.get_or_init(|| {
+        ProQue::builder()
+            .src(KERNEL)
+            .build().unwrap()
+    }).clone();
+
+
+    pro_que.set_dims(Three(schem_width, schem_height, schem_length));
 
     let buffer = Buffer::builder()
         .queue(pro_que.queue().clone())