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tjp/core/threads/TestMutex.inl

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+// 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.h"
+
+#include "../system/Debug.h"
+#include "../assert/debug_assert.h"
+
+namespace tjp::core {
+
+#ifdef USE_REAL_TEST_MUTEX
+
+inline
+TestMutex::Lock TestMutex::lock_of()
+{
+	return Lock(*this);
+}
+
+inline
+void TestMutex::lock ()
+{
+	auto id = get_thread_id();
+	auto next = id;
+	auto previous = v.exchange(next);
+	
+	debug_assert(previous == 0 || previous == id);
+
+	c++;
+}
+
+inline
+void TestMutex::unlock ()
+{
+	auto id = get_thread_id();
+	auto next = (--c) ? get_thread_id() : 0;
+	
+	auto previous = v.exchange(next);
+	debug_assert(previous == id);
+}
+
+inline
+u64 TestMutex::get_thread_id() const
+{
+	return std::hash<std::thread::id>()(std::this_thread::get_id());
+}
+
+inline
+bool TestMutex::locked_by_caller() const
+{
+	return v == get_thread_id();
+}
+
+
+inline
+TestMutex::Lock::Lock ()
+{
+}
+
+inline
+TestMutex::Lock::Lock (TestMutex::Lock &&rhs)
+{
+	std::swap(rhs.m, m);
+}
+
+inline
+TestMutex::Lock::Lock (TestMutex &m_)
+{
+	m_.lock();
+	m = &m_;
+}
+
+inline
+TestMutex::Lock::~Lock ()
+{
+	if (m)
+		m->unlock();
+}
+
+#endif
+
+inline
+auto lock_of(TestMutex &m)
+{
+	return m.lock_of();
+}
+
+} // namespace
+