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include/tl/detail/internal_crash.h

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+#pragma once
+
+#include "tl/detail/prologue.h"
+
+///////////////////////////////////////////////////////////////////////////////
+//
+
+namespace tl
+{
+namespace crash
+{
+	//use this to specify a function to be called when a crash is requested.
+	//Note!!! File and msg can be NULL
+	//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+	//
+	//   It's very risky to implement this function so do it only if you REALLY REALLY have to do something before the crash.
+	//   This might be called because the system is out of memory - so any allocation will fail. Same for file handles or any other resources.
+	//
+	//!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+	enum class response
+	{
+		CRASH,
+		CONTINUE
+	};
+
+	using handler = response (*)(const char *, int, const char *);
+	TL_API handler set_handler(handler) noexcept;
+
+	TL_API response default_handler(const char* file, int line, const char* msg) noexcept;
+
+	//Use this to temporarily change the assert handler for the current scope
+	class handler_guard
+	{
+	public:
+		explicit handler_guard(handler new_handler) noexcept
+		{
+			m_prev_handler = set_handler(new_handler);
+		}
+		~handler_guard() noexcept
+		{
+			set_handler(m_prev_handler);
+		}
+
+	private:
+		handler m_prev_handler;
+	};
+
+ ///////////////////////////////////////////////////////////////////////
+ //for internal use only
+namespace detail
+{
+TL_API handler& get_static_handler() noexcept;
+//this is responsible of formatting the messages and calling the handler
+inline response invoke_crash_handler(const char* file, int line, const char* msg) noexcept
+{
+	const handler& handler = get_static_handler();
+	return handler(file, line, msg);
+}
+}
+}
+}
+
+#include "tl/detail/internal_assert.h"
+
+