From fd564cd44acf5efe80b6ecaee178e733bb77605e Mon Sep 17 00:00:00 2001
From: Sadie Powell
Date: Sat, 15 Jul 2023 08:18:05 +0100
Subject: Rename several Windows files to use the same naming scheme.

[skip alpine ci]
[skip irctest ci]
[skip macos ci]
[skip ubuntu ci]
---
 win/win32memory.cpp | 73 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 win/win32memory.cpp

(limited to 'win/win32memory.cpp')

diff --git a/win/win32memory.cpp b/win/win32memory.cpp
new file mode 100644
index 000000000..c2535091f
--- /dev/null
+++ b/win/win32memory.cpp
@@ -0,0 +1,73 @@
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ *   Copyright (C) 2013 Sadie Powell <sadie@witchery.services>
+ *   Copyright (C) 2013 Adam <Adam@anope.org>
+ *   Copyright (C) 2012 Robby <robby@chatbelgie.be>
+ *   Copyright (C) 2012 ChrisTX <xpipe@hotmail.de>
+ *   Copyright (C) 2009 John Brooks <special@inspircd.org>
+ *   Copyright (C) 2007-2008 Craig Edwards <brain@inspircd.org>
+ *   Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
+ *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ *
+ * This file is part of InspIRCd.  InspIRCd is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation, version 2.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include <exception>
+#include <new>
+
+#include <windows.h>
+
+/** On windows, all dll files and executables have their own private heap,
+ * whereas on POSIX systems, shared objects loaded into an executable share
+ * the executable's heap. This means that if we pass an arbitrary pointer to
+ * a windows DLL which is not allocated in that dll, without some form of
+ * marshalling, we get a page fault. To fix this, these overridden operators
+ * new and delete use the windows HeapAlloc and HeapFree functions to claim
+ * memory from the windows global heap. This makes windows 'act like' POSIX
+ * when it comes to memory usage between dlls and exes.
+ */
+
+void * ::operator new(size_t iSize)
+{
+	void* ptr = HeapAlloc(GetProcessHeap(), 0, iSize);
+	/* This is the correct behaviour according to C++ standards for out of memory,
+	 * not returning null -- Brain
+	 */
+	if (!ptr)
+		throw std::bad_alloc();
+	else
+		return ptr;
+}
+
+void ::operator delete(void * ptr)
+{
+	if (ptr)
+		HeapFree(GetProcessHeap(), 0, ptr);
+}
+
+void * operator new[] (size_t iSize)
+{
+	void* ptr = HeapAlloc(GetProcessHeap(), 0, iSize);
+	if (!ptr)
+		throw std::bad_alloc();
+	else
+		return ptr;
+}
+
+void operator delete[] (void* ptr)
+{
+	if (ptr)
+		HeapFree(GetProcessHeap(), 0, ptr);
+}
-- 
cgit v1.3.1-10-gc9f91