flatten 20260225

tjp/core/threads/TestCollision.h

@@ -0,0 +1,79 @@
+// License: Modified MIT (NON-AI)
+// See the LICENSE file in the root directory for license information.
+// Copyright 2025 Timothy Prepscius
+
+#pragma once
+
+#include <atomic>
+#include "Lock.hpp"
+#include "../assert/release_assert.h"
+
+namespace tjp::core {
+
+struct ColliderImp
+{
+	Mutex m;
+	std::atomic<int> read = 0;
+	std::atomic<int> write = 0;
+} ;
+
+struct TestCollisionReadImp
+{
+	ColliderImp &collider;
+	
+	TestCollisionReadImp (ColliderImp &collider_) :
+		collider(collider_)
+	{
+		auto l = lock_of(collider.m);
+		release_assert(collider.write == 0);
+		collider.read++;
+	}
+	
+	~TestCollisionReadImp ()
+	{
+		collider.read--;
+	}
+};
+
+struct TestCollisionWriteImp
+{
+	ColliderImp &collider;
+	
+	TestCollisionWriteImp (ColliderImp &collider_) :
+		collider(collider_)
+	{
+		auto l = lock_of(collider.m);
+		release_assert(collider.write == 0);
+		release_assert(collider.read == 0);
+		
+		collider.write++;
+	}
+	
+	~TestCollisionWriteImp ()
+	{
+		collider.write--;
+	}
+};
+
+struct ColliderEmpty {};
+struct TestCollisionEmpty
+{
+	TestCollisionEmpty (ColliderEmpty &_){ (void)_; }
+} ;
+
+#ifdef DEBUG
+	using Collider = ColliderImp;
+	using TestCollisionRead = TestCollisionReadImp;
+	using TestCollisionWrite = TestCollisionWriteImp;
+#else
+	using Collider = ColliderEmpty;
+	using TestCollisionRead = TestCollisionEmpty;
+	using TestCollisionWrite = TestCollisionEmpty;
+#endif
+
+using ColliderAlways = ColliderImp;
+using TestCollisionReadAlways = TestCollisionReadImp;
+using TestCollisionWriteAlways = TestCollisionReadImp;
+
+} // namespace
+