From 3b9d11951810c199297b01cba64c28b718fabd84 Mon Sep 17 00:00:00 2001
From: Mahesh Madhav <67384846+heshpdx@users.noreply.github.com>
Date: Thu, 22 Aug 2024 23:16:52 -0700
Subject: [PATCH] Reduce clock syscalls (#4303)

Gate the sample of the clock by the tessedit_timing_debug flag,
which is the only time it gets used anyway.

This eliminates unnecessary clock_gettime() system calls.
---
 src/ccmain/control.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/ccmain/control.cpp b/src/ccmain/control.cpp
index 30afc47763..df661e7ece 100644
--- a/src/ccmain/control.cpp
+++ b/src/ccmain/control.cpp
@@ -1312,7 +1312,10 @@ void Tesseract::classify_word_and_language(int pass_n, PAGE_RES_IT *pr_it, WordD
   PointerVector<WERD_RES> best_words;
   // Points to the best result. May be word or in lang_words.
   const WERD_RES *word = word_data->word;
-  clock_t start_t = clock();
+  clock_t start_t = 0;
+  if (tessedit_timing_debug) {
+    start_t = clock();
+  }
   const bool debug = classify_debug_level > 0 || multilang_debug_level > 0;
   if (debug) {
     tprintf("%s word with lang %s at:", word->done ? "Already done" : "Processing",
@@ -1364,8 +1367,8 @@ void Tesseract::classify_word_and_language(int pass_n, PAGE_RES_IT *pr_it, WordD
   } else {
     tprintf("no best words!!\n");
   }
-  clock_t ocr_t = clock();
   if (tessedit_timing_debug) {
+    clock_t ocr_t = clock();
     tprintf("%s (ocr took %.2f sec)\n", word_data->word->best_choice->unichar_string().c_str(),
             static_cast<double>(ocr_t - start_t) / CLOCKS_PER_SEC);
   }