epoc32/include/tools/stlport/stl/_alloc.c
author William Roberts <williamr@symbian.org>
Wed, 31 Mar 2010 12:33:34 +0100 (2010-03-31)
branchSymbian3
changeset 4 837f303aceeb
permissions -rw-r--r--
Current Symbian^3 public API header files (from PDK 3.0.h)
This is the epoc32/include tree with the "platform" subtrees removed, and
all but a selected few mbg and rsg files removed.
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/*
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 *
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 * Copyright (c) 1996,1997
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 * Silicon Graphics Computer Systems, Inc.
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 *
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 * Copyright (c) 1997
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 * Moscow Center for SPARC Technology
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 *
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 * Copyright (c) 1999
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 * Boris Fomitchev
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 *
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 * This material is provided "as is", with absolutely no warranty expressed
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 * or implied. Any use is at your own risk.
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 *
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 * Permission to use or copy this software for any purpose is hereby granted
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 * without fee, provided the above notices are retained on all copies.
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 * Permission to modify the code and to distribute modified code is granted,
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 * provided the above notices are retained, and a notice that the code was
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 * modified is included with the above copyright notice.
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 *
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 */
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#ifndef _STLP_ALLOC_C
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#define _STLP_ALLOC_C
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#ifndef _STLP_INTERNAL_ALLOC_H
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#  include <stl/_alloc.h>
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#endif
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#if defined (__WATCOMC__)
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#  pragma warning 13 9
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#  pragma warning 367 9
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#  pragma warning 368 9
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#endif
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_STLP_BEGIN_NAMESPACE
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template <class _Alloc>
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void * _STLP_CALL __debug_alloc<_Alloc>::allocate(size_t __n) {
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  size_t __total_extra = __extra_before_chunk() + __extra_after_chunk();
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  size_t __real_n = __n + __total_extra;
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  if (__real_n < __n) {
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    //It means that we rolled on size_t, __n must be very large, lets hope
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    //that allocating it will raised a bad_alloc exception:
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    __real_n = __n + (__total_extra - __real_n - 1);
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  }
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  __alloc_header *__result = (__alloc_header *)__allocator_type::allocate(__real_n);
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  memset((char*)__result, __shred_byte, __real_n * sizeof(value_type));
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  __result->__magic = __magic;
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  __result->__type_size = sizeof(value_type);
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  __result->_M_size = (_STLP_UINT32_T)__n;
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  return ((char*)__result) + (long)__extra_before;
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}
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template <class _Alloc>
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void  _STLP_CALL
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__debug_alloc<_Alloc>::deallocate(void *__p, size_t __n) {
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  __alloc_header * __real_p = (__alloc_header*)((char *)__p -(long)__extra_before);
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  // check integrity
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  _STLP_VERBOSE_ASSERT(__real_p->__magic != __deleted_magic, _StlMsg_DBA_DELETED_TWICE)
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  _STLP_VERBOSE_ASSERT(__real_p->__magic == __magic, _StlMsg_DBA_NEVER_ALLOCATED)
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  _STLP_VERBOSE_ASSERT(__real_p->__type_size == 1,_StlMsg_DBA_TYPE_MISMATCH)
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  _STLP_VERBOSE_ASSERT(__real_p->_M_size == __n, _StlMsg_DBA_SIZE_MISMATCH)
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  // check pads on both sides
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  unsigned char* __tmp;
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  for (__tmp = (unsigned char*)(__real_p + 1); __tmp < (unsigned char*)__p; ++__tmp) {
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    _STLP_VERBOSE_ASSERT(*__tmp == __shred_byte, _StlMsg_DBA_UNDERRUN)
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  }
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  size_t __real_n = __n + __extra_before_chunk() + __extra_after_chunk();
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  for (__tmp= ((unsigned char*)__p) + __n * sizeof(value_type);
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       __tmp < ((unsigned char*)__real_p) + __real_n ; ++__tmp) {
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    _STLP_VERBOSE_ASSERT(*__tmp == __shred_byte, _StlMsg_DBA_OVERRUN)
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  }
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  // that may be unfortunate, just in case
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  __real_p->__magic = __deleted_magic;
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  memset((char*)__p, __shred_byte, __n * sizeof(value_type));
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  __allocator_type::deallocate(__real_p, __real_n);
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}
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_STLP_END_NAMESPACE
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#endif /*  _STLP_ALLOC_C */
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// Local Variables:
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// mode:C++
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// End: