From 17cdd692071bb22dd0d56a422dd22946112181b5 Mon Sep 17 00:00:00 2001
From: Vladislav Ostapov <Vlados.ost.31@yandex.ru>
Date: Tue, 6 May 2025 14:37:19 +0300
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---
 src/terminal_api_driver.cpp | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/src/terminal_api_driver.cpp b/src/terminal_api_driver.cpp
index 980219b..6a7052c 100644
--- a/src/terminal_api_driver.cpp
+++ b/src/terminal_api_driver.cpp
@@ -15,6 +15,8 @@
 typedef boost::property_tree::ptree::path_type json_path;
 
 static constexpr const char* DEFAULT_QOS_CLASSES = R"({"rt1":[],"rt2":[],"rt3":[],"cd":[]})";
+// пороговое значение сна
+static constexpr int64_t SLEEP_THRESHOLD = 10;
 
 // static int calculateSubnetMask(const std::string& subnet_mask) {
 //     int mask = 0;
@@ -463,7 +465,7 @@ private:
             bool checkNeedUpdate(int64_t now) const {
                 if (periodMs < 0) return false;
                 // тут нет смысла спать меньше чем на 20мс, поэтому можно разрешить чтение на некоторое время раньше
-                return now - lastUpdate >= (periodMs - 20);
+                return now - lastUpdate >= (periodMs - SLEEP_THRESHOLD);
             }
 
             int64_t getNextUpdate(int64_t now) const {
@@ -543,17 +545,19 @@ private:
             auto now = TIME_NOW();
             for (auto& u: updaters) {
                 if (u.checkNeedUpdate(now)) {
-                    // выравнивание таймингов (-20ms...+50ms)
-                    if (u.lastUpdate + u.periodMs + 50 < now) {
-                        u.lastUpdate += u.periodMs;
+                    auto targetTime = u.lastUpdate + u.periodMs;
+                    if (targetTime + SLEEP_THRESHOLD <= now && targetTime - SLEEP_THRESHOLD >= now) {
+                        u.lastUpdate = targetTime;
                     } else {
                         u.lastUpdate = now;
                     }
+
                     u.callback();
                     now = TIME_NOW();
                 }
-
-                sleepTime = std::min(sleepTime, u.getNextUpdate(now));
+                if (u.periodMs >= 0) {
+                    sleepTime = std::min(sleepTime, u.getNextUpdate(now));
+                }
             }
 
             if (sleepTime > 0) {