From 2d420c05254d17b5f396305333673bae36abab44 Mon Sep 17 00:00:00 2001
From: Eelke Klein <eelke@eelkeklein.nl>
Date: Fri, 6 Jan 2017 07:22:35 +0100
Subject: [PATCH] new class: WaitHandleList helper for waiting on multiple
 events using the Win32 api.

---
 waithandlelist.cpp | 31 +++++++++++++++++++++++++++++++
 waithandlelist.h   | 26 ++++++++++++++++++++++++++
 2 files changed, 57 insertions(+)
 create mode 100644 waithandlelist.cpp
 create mode 100644 waithandlelist.h

diff --git a/waithandlelist.cpp b/waithandlelist.cpp
new file mode 100644
index 0000000..e05bba4
--- /dev/null
+++ b/waithandlelist.cpp
@@ -0,0 +1,31 @@
+#include "waithandlelist.h"
+#include "win32event.h"
+
+WaitHandleList::WaitHandleList() = default;
+WaitHandleList::~WaitHandleList() = default;
+
+WaitResultValue WaitHandleList::add(HANDLE h)
+{
+	m_waitHandles.push_back(h);
+	return WAIT_OBJECT_0 + static_cast<DWORD>(m_waitHandles.size() - 1);
+}
+
+WaitResultValue WaitHandleList::add(Win32Event &e)
+{
+	return add(e.handle());
+}
+
+DWORD WaitHandleList::count() const
+{
+	return static_cast<DWORD>(m_waitHandles.size());
+}
+
+void WaitHandleList::clear()
+{
+	m_waitHandles.clear();
+}
+
+WaitHandleList::operator const HANDLE*() const
+{
+	return m_waitHandles.data();
+}
diff --git a/waithandlelist.h b/waithandlelist.h
new file mode 100644
index 0000000..376e817
--- /dev/null
+++ b/waithandlelist.h
@@ -0,0 +1,26 @@
+#ifndef WAITHANDLELIST_H
+#define WAITHANDLELIST_H
+
+#include <windows.h>
+#include <vector>
+
+class Win32Event;
+
+using WaitResultValue = DWORD;
+
+class WaitHandleList {
+public:
+	WaitHandleList();
+	~WaitHandleList();
+
+	WaitResultValue add(HANDLE h);
+	WaitResultValue add(Win32Event &e);
+	DWORD count() const;
+	void clear();
+	operator const HANDLE*() const;
+
+private:
+	std::vector<HANDLE> m_waitHandles;
+};
+
+#endif // WAITHANDLELIST_H