malloc and new

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  • Mohsen
    #1

    malloc and new

    Dear All,
    Do you know if there is any difference between 'new' and
    'malloc' in terms of handling memory?
    If someone has insufficient memory to run a big problem, do you think
    it makes any difference to use 'new' or 'malloc'?
    Thanks,
    Mohsen

    Tags: None
    • Ivan Vecerina
      #2
      Re: malloc and new

      "Mohsen" <jafarikia@gmai l.comwrote in message
      news:1163083494 .948073.37380@h 54g2000cwb.goog legroups.com...
      : Dear All,
      : Do you know if there is any difference between 'new' and
      : 'malloc' in terms of handling memory?
      It depends on the platform. But many implementations of
      'new' just use malloc internally.

      : If someone has insufficient memory to run a big problem, do you think
      : it makes any difference to use 'new' or 'malloc'?
      No (except for rare cases where you may benefit from 'realloc',
      which is only available with the latter).


      Can you tell more about the problem you are trying to solve?


      --
      http://ivan.vecerina.com/contact/?subject=NG_POST <- email contact form



        Comment

        • missdeer
          #3
          Re: malloc and new

          Some library will overload operator new, then the great differences exist.

          "Mohsen" <jafarikia@gmai l.com>
          ??????:11630834 94.948073.37380 @h54g2000cwb.go oglegroups.com. ..
          Dear All,
          Do you know if there is any difference between 'new' and
          'malloc' in terms of handling memory?
          If someone has insufficient memory to run a big problem, do you think
          it makes any difference to use 'new' or 'malloc'?
          Thanks,
          Mohsen
          >

            Comment

            • Jim Langston
              #4
              Re: malloc and new

              "Mohsen" <jafarikia@gmai l.comwrote in message
              news:1163083494 .948073.37380@h 54g2000cwb.goog legroups.com...
              Dear All,
              Do you know if there is any difference between 'new' and
              'malloc' in terms of handling memory?
              If someone has insufficient memory to run a big problem, do you think
              it makes any difference to use 'new' or 'malloc'?
              Thanks,
              Mohsen
              Typically, it wouldn't matter, as most default implementations of new use
              malloc under the seams. However, you are free to create your own
              implementation of new, in which case it could make a diffeence depending on
              what you did (I could forsee someone using memory sticks).


                Comment

                • Ron Natalie
                  #5
                  Re: malloc and new

                  Mohsen wrote:
                  Dear All,
                  Do you know if there is any difference between 'new' and
                  'malloc' in terms of handling memory?
                  If someone has insufficient memory to run a big problem, do you think
                  it makes any difference to use 'new' or 'malloc'?
                  Thanks,
                  Mohsen
                  >
                  new crates objects.
                  malloc allocates bytes of memory.

                  New has a return type of something other than void*.
                  New can have the memory allocator swapped out (operator new overloaded)
                  New performs initialization of most types.
                  New performs "behind-the-scenes" types of initialization like
                  setting up run-time typing.

                    Comment

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