From 658d5b6f71d3a275f9977733aa07b6ff0d2c6348 Mon Sep 17 00:00:00 2001
From: Michael Hansen <zrax0111@gmail.com>
Date: Wed, 20 Aug 2014 20:15:52 -0700
Subject: [PATCH] This version of hsEvent more accurately matches the previous
 (Win32) behavior, and also serves as a proper binary semaphore.

---
 Sources/Plasma/CoreLib/hsThread.h | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/Sources/Plasma/CoreLib/hsThread.h b/Sources/Plasma/CoreLib/hsThread.h
index 59514e18..838961b0 100644
--- a/Sources/Plasma/CoreLib/hsThread.h
+++ b/Sources/Plasma/CoreLib/hsThread.h
@@ -175,19 +175,34 @@ class hsEvent
 {
     std::mutex fMutex;
     std::condition_variable fCondition;
+    bool fEvent;
 
 public:
-    hsEvent() { }
+    hsEvent() : fEvent(false) { }
 
     inline void Wait()
     {
         std::unique_lock<std::mutex> lock(fMutex);
-        fCondition.wait(lock);
+        fCondition.wait(lock, [this]() { return fEvent; });
+        fEvent = false;
+    }
+
+    template <class _Rep, class _Period>
+    inline bool Wait(const std::chrono::duration<_Rep, _Period> &duration)
+    {
+        std::unique_lock<std::mutex> lock(fMutex);
+
+        bool result = fCondition.wait_for(lock, duration, [this]() { return fEvent; });
+        if (result)
+            fEvent = false;
+
+        return result;
     }
 
     inline void Signal()
     {
         std::unique_lock<std::mutex> lock(fMutex);
+        fEvent = true;
         fCondition.notify_one();
     }
 };