From fb68886768ccbab73550eb23c62eaabcc843904c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Axel=20D=C3=B6rfler?= <axeld@pinc-software.de>
Date: Fri, 27 Jun 2003 22:58:58 +0000
Subject: [PATCH] C++ for the kernel.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3701 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 headers/private/kernel/util/kernel_cpp.h | 59 ++++++++++++++++++++++++
 src/kernel/core/util/Jamfile             |  7 +++
 src/kernel/core/util/kernel_cpp.cpp      | 16 +++++++
 3 files changed, 82 insertions(+)
 create mode 100644 headers/private/kernel/util/kernel_cpp.h
 create mode 100644 src/kernel/core/util/Jamfile
 create mode 100644 src/kernel/core/util/kernel_cpp.cpp

diff --git a/headers/private/kernel/util/kernel_cpp.h b/headers/private/kernel/util/kernel_cpp.h
new file mode 100644
index 0000000000..9b66c1b0fe
--- /dev/null
+++ b/headers/private/kernel/util/kernel_cpp.h
@@ -0,0 +1,59 @@
+#ifndef CPP_H
+#define CPP_H
+/* cpp - C++ in the kernel
+**
+** Initial version by Axel Dörfler, axeld@pinc-software.de
+** This file may be used under the terms of the OpenBeOS License.
+*/
+
+
+#include <new>
+#include <stdlib.h>
+
+
+// Oh no! C++ in the kernel! Are you nuts?
+//
+//	- no exceptions
+//	- (almost) no virtuals (well, the Query code now uses them)
+//	- it's basically only the C++ syntax, and type checking
+//	- since one tend to encapsulate everything in classes, it has a slightly
+//	  higher memory overhead
+//	- nicer code
+//	- easier to maintain
+
+
+inline void *
+operator new(size_t size) throw (std::bad_alloc)
+{
+	// we don't actually throw any exceptions, but we have to
+	// keep the prototype as specified in <new>, or else GCC 3
+	// won't like us
+	return malloc(size);
+} 
+
+
+inline void *
+operator new[](size_t size) throw (std::bad_alloc)
+{
+	return malloc(size);
+}
+ 
+
+inline void
+operator delete(void *ptr)
+{
+	free(ptr);
+} 
+
+
+inline void
+operator delete[](void *ptr)
+{
+	free(ptr);
+}
+
+// we're using virtuals
+extern "C" void __pure_virtual();
+
+
+#endif	/* CPP_H */
diff --git a/src/kernel/core/util/Jamfile b/src/kernel/core/util/Jamfile
new file mode 100644
index 0000000000..09fc195b41
--- /dev/null
+++ b/src/kernel/core/util/Jamfile
@@ -0,0 +1,7 @@
+SubDir OBOS_TOP src kernel core util ;
+
+KernelStaticLibrary libkernel_util : 
+	<$(SOURCE_GRIST)>kernel_cpp.cpp
+	:
+	-fno-pic -Wno-unused -D_KERNEL_MODE
+	;
diff --git a/src/kernel/core/util/kernel_cpp.cpp b/src/kernel/core/util/kernel_cpp.cpp
new file mode 100644
index 0000000000..701a1b216a
--- /dev/null
+++ b/src/kernel/core/util/kernel_cpp.cpp
@@ -0,0 +1,16 @@
+/* cpp - C++ in the kernel
+**
+** Initial version by Axel Dörfler, axeld@pinc-software.de
+** This file may be used under the terms of the OpenBeOS License.
+*/
+
+
+#include "util/kernel_cpp.h"
+
+
+extern "C" void
+__pure_virtual()
+{
+	//printf("pure virtual function call");
+}
+