From fe660cdff59aa3a939479ed60172e5c0803552b2 Mon Sep 17 00:00:00 2001
From: Daniel Wilhelm <shieldwed@outlook.com>
Date: Sun, 8 Jan 2017 18:21:23 +0100
Subject: 8.7

---
 zen/dir_watcher.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'zen/dir_watcher.cpp')

diff --git a/zen/dir_watcher.cpp b/zen/dir_watcher.cpp
index 12a6a9f4..98190bba 100644
--- a/zen/dir_watcher.cpp
+++ b/zen/dir_watcher.cpp
@@ -9,6 +9,7 @@
 #include <set>
 #include "thread.h"
 #include "scope_guard.h"
+#include "basic_math.h"
 
 #ifdef ZEN_WIN
     #include "device_notify.h"
@@ -358,10 +359,11 @@ std::vector<DirWatcher::Entry> DirWatcher::getChanges(const std::function<void()
     //wait until device removal is confirmed, to prevent locking hDir again by some new watch!
     if (pimpl_->volRemoval->requestReceived())
     {
-        const std::chrono::steady_clock::time_point stopTime = std::chrono::steady_clock::now() + std::chrono::seconds(15);
+        const auto startTime = std::chrono::steady_clock::now();
         //HandleVolumeRemoval::finished() not guaranteed! note: Windows gives unresponsive applications ca. 10 seconds until unmounting the usb stick in worst case
 
-        while (!pimpl_->volRemoval->finished() && std::chrono::steady_clock::now() < stopTime)
+        while (!pimpl_->volRemoval->finished() &&
+               numeric::dist(std::chrono::steady_clock::now(), startTime) < std::chrono::seconds(15)) //handle potential chrono wrap-around!
         {
             processGuiMessages(); //DBT_DEVICEREMOVECOMPLETE message is sent here!
             std::this_thread::sleep_for(std::chrono::milliseconds(50));
-- 
cgit