haiku/headers/private/kernel/util/kernel_cpp.h
Ingo Weinhold 90072e721d Always define the symbols needed for basic C++ features. If we link against libgcc.a the symbols from there are simply overridden.
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9778 a95241bf-73f2-0310-859d-f6bbb57e9c96
2004-11-03 17:33:17 +00:00

79 lines
1.4 KiB
C++

#ifndef KERNEL_CPP_H
#define KERNEL_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.
*/
#ifdef __cplusplus
#include <new>
#include <stdlib.h>
#if _KERNEL_MODE
using namespace std;
extern const nothrow_t std::nothrow;
// 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 new(size_t size, const std::nothrow_t &) throw ()
{
return malloc(size);
}
inline void *
operator new[](size_t size, const std::nothrow_t &) throw ()
{
return malloc(size);
}
inline void
operator delete(void *ptr) throw ()
{
free(ptr);
}
inline void
operator delete[](void *ptr) throw ()
{
free(ptr);
}
#endif // #if _KERNEL_MODE
#endif // __cplusplus
#endif /* KERNEL_CPP_H */