I need to write to a file that is 50 to 250GB on all three major operating systems.

I tried to use the c function pwrite64.  But it is not available on the Mac.

I have seen where some have used the iostream in C++ but this does not seem to work on the Mac.

Is there any way to write in D very large files.  After all I would rather write in D than wrap C or C++ code.

Thank you.

On Friday, 27 July 2012 at 01:50:57 UTC, wmunger wrote:
> I need to write to a file that is 50 to 250GB on all three major operating systems.
>
> I tried to use the c function pwrite64.  But it is not available on the Mac.
>
> I have seen where some have used the iostream in C++ but this does not seem to work on the Mac.
>
> Is there any way to write in D very large files.  After all I would rather write in D than wrap C or C++ code.
>
> Thank you.

 What are you going to be writing? Depending on the issue, it may be a Filesystem/OS limitation than a language limitation.

On Fri, 27 Jul 2012 02:50:56 +0100, wmunger <wmunger@gmail.com> wrote:

> I need to write to a file that is 50 to 250GB on all three major operating systems.
>
> I tried to use the c function pwrite64.  But it is not available on the Mac.
>
> I have seen where some have used the iostream in C++ but this does not seem to work on the Mac.
>
> Is there any way to write in D very large files.  After all I would rather write in D than wrap C or C++ code.

Have you looked for open, lseek(64) and write?

R

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On Friday, 27 July 2012 at 02:33:39 UTC, Era Scarecrow wrote:
> On Friday, 27 July 2012 at 01:50:57 UTC, wmunger wrote:
>> I need to write to a file that is 50 to 250GB on all three major operating systems.
>>
>> I tried to use the c function pwrite64.  But it is not available on the Mac.
>>
>> I have seen where some have used the iostream in C++ but this does not seem to work on the Mac.
>>
>> Is there any way to write in D very large files.  After all I would rather write in D than wrap C or C++ code.
>>
>> Thank you.
>
>  What are you going to be writing? Depending on the issue, it may be a Filesystem/OS limitation than a language limitation.

both binary and text.  The writes may be larger than 2 GB.

On Friday, 27 July 2012 at 09:40:15 UTC, Regan Heath wrote:
> On Fri, 27 Jul 2012 02:50:56 +0100, wmunger <wmunger@gmail.com> wrote:
>
>> I need to write to a file that is 50 to 250GB on all three major operating systems.
>>
>> I tried to use the c function pwrite64.  But it is not available on the Mac.
>>
>> I have seen where some have used the iostream in C++ but this does not seem to work on the Mac.
>>
>> Is there any way to write in D very large files.  After all I would rather write in D than wrap C or C++ code.
>
> Have you looked for open, lseek(64) and write?
>
> R

Lseek64 is not available on the Mac.  I have tried lseek on a a 64 bit OS and it still acts like 32 bit.