From: Victor Julien <vjulien@oisf.net>
Date: Tue, 26 Sep 2023 08:10:14 +0000 (+0200)
Subject: detect: optimize struct layout
X-Git-Tag: suricata-8.0.0-beta1~1948
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0014077a369328f111a6600b412b753866e4b1e4;p=thirdparty%2Fsuricata.git

detect: optimize struct layout

Move reference count to top of DetectEngineThreadCtx, to move it to the
same cache line as the other members that are checked first in Detect().
---

diff --git a/src/detect.h b/src/detect.h
index 9230f501d6..2b634e7617 100644
--- a/src/detect.h
+++ b/src/detect.h
@@ -1082,6 +1082,8 @@ typedef struct DetectEngineThreadCtx_ {
      *        on this being the first member */
     uint32_t tenant_id;
 
+    SC_ATOMIC_DECLARE(int, so_far_used_by_detect);
+
     /* the thread to which this detection engine thread belongs */
     ThreadVars *tv;
 
@@ -1157,8 +1159,6 @@ typedef struct DetectEngineThreadCtx_ {
     uint16_t alert_queue_capacity;
     PacketAlert *alert_queue;
 
-    SC_ATOMIC_DECLARE(int, so_far_used_by_detect);
-
     /** array of signature pointers we're going to inspect in the detection
      *  loop. */
     Signature **match_array;