7a9457bb07
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5145 42af7a65-404d-4744-a932-0658087f49c3
103 lines
3.7 KiB
C++
103 lines
3.7 KiB
C++
//***************************************************************************
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// libxx/libxx_new.cxx
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//
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// Copyright (C) 2009 Gregory Nutt. All rights reserved.
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// Author: Gregory Nutt <gnutt@nuttx.org>
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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//
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// 1. Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in
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// the documentation and/or other materials provided with the
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// distribution.
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// 3. Neither the name NuttX nor the names of its contributors may be
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// used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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// OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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//***************************************************************************
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//***************************************************************************
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// Included Files
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//***************************************************************************
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#include <nuttx/config.h>
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#include <cstddef>
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#include <cstdlib>
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#include <debug.h>
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//***************************************************************************
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// Definitions
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//***************************************************************************
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//***************************************************************************
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// Private Data
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//***************************************************************************
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//***************************************************************************
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// Operators
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//***************************************************************************
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//***************************************************************************
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// Name: new
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//
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// NOTE:
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// This should take a type of size_t. But size_t has an unknown underlying
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// type. In the nuttx sys/types.h header file, size_t is typed as uint32_t
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// (which is determined by architecture-specific logic). But the C++
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// compiler may believe that size_t is of a different type resulting in
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// compilation errors in the operator. Using the underlying integer type
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// instead of size_t seems to resolve the compilation issues. Need to
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// REVISIT this.
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//
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//***************************************************************************
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//void *operator new(size_t nbytes)
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#ifdef CONFIG_CXX_NEWLONG
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void *operator new(unsigned long nbytes)
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#else
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void *operator new(unsigned int nbytes)
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#endif
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{
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// We have to allocate something
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if (nbytes < 1)
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{
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nbytes = 1;
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}
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// Perform the allocation
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void *alloc = malloc(nbytes);
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#ifdef CONFIG_DEBUG
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if (alloc == 0)
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{
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// Oh my.. we are required to return a valid pointer and
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// we cannot throw an exception! We are bad.
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dbg("Failed to allocate\n");
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}
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#endif
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// Return the allocated value
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return alloc;
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}
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