104 lines
3.7 KiB
C++
104 lines
3.7 KiB
C++
//***************************************************************************
|
|
// libxx/libxx_new.cxx
|
|
//
|
|
// Copyright (C) 2009, 2013 Gregory Nutt. All rights reserved.
|
|
// Author: Gregory Nutt <gnutt@nuttx.org>
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions
|
|
// are met:
|
|
//
|
|
// 1. Redistributions of source code must retain the above copyright
|
|
// notice, this list of conditions and the following disclaimer.
|
|
// 2. Redistributions in binary form must reproduce the above copyright
|
|
// notice, this list of conditions and the following disclaimer in
|
|
// the documentation and/or other materials provided with the
|
|
// distribution.
|
|
// 3. Neither the name NuttX nor the names of its contributors may be
|
|
// used to endorse or promote products derived from this software
|
|
// without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
// OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
// POSSIBILITY OF SUCH DAMAGE.
|
|
//
|
|
//***************************************************************************
|
|
|
|
//***************************************************************************
|
|
// Included Files
|
|
//***************************************************************************
|
|
|
|
#include <nuttx/config.h>
|
|
#include <cstddef>
|
|
#include <debug.h>
|
|
|
|
#include "libxx.hxx"
|
|
|
|
//***************************************************************************
|
|
// Pre-processor Definitions
|
|
//***************************************************************************
|
|
|
|
//***************************************************************************
|
|
// Private Data
|
|
//***************************************************************************
|
|
|
|
//***************************************************************************
|
|
// Operators
|
|
//***************************************************************************
|
|
|
|
//***************************************************************************
|
|
// Name: new
|
|
//
|
|
// NOTE:
|
|
// This should take a type of size_t. But size_t has an unknown underlying
|
|
// type. In the nuttx sys/types.h header file, size_t is typed as uint32_t
|
|
// (which is determined by architecture-specific logic). But the C++
|
|
// compiler may believe that size_t is of a different type resulting in
|
|
// compilation errors in the operator. Using the underlying integer type
|
|
// instead of size_t seems to resolve the compilation issues. Need to
|
|
// REVISIT this.
|
|
//
|
|
//***************************************************************************
|
|
|
|
//void *operator new(size_t nbytes)
|
|
#ifdef CONFIG_CXX_NEWLONG
|
|
void *operator new(unsigned long nbytes)
|
|
#else
|
|
void *operator new(unsigned int nbytes)
|
|
#endif
|
|
{
|
|
// We have to allocate something
|
|
|
|
if (nbytes < 1)
|
|
{
|
|
nbytes = 1;
|
|
}
|
|
|
|
// Perform the allocation
|
|
|
|
void *alloc = lib_malloc(nbytes);
|
|
|
|
#ifdef CONFIG_DEBUG_FEATURES
|
|
if (alloc == 0)
|
|
{
|
|
// Oh my.. we are required to return a valid pointer and
|
|
// we cannot throw an exception! We are bad.
|
|
|
|
err("Failed to allocate\n");
|
|
}
|
|
#endif
|
|
|
|
// Return the allocated value
|
|
|
|
return alloc;
|
|
}
|