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July 27, 2012 Writing very large files 50+ GB | ||||
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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. |
July 27, 2012 Re: Writing very large files 50+ GB | ||||
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Posted in reply to wmunger | 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.
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July 27, 2012 Re: Writing very large files 50+ GB | ||||
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Posted in reply to wmunger | 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 -- Using Opera's revolutionary email client: http://www.opera.com/mail/ |
July 29, 2012 Re: Writing very large files 50+ GB | ||||
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Posted in reply to Era Scarecrow | 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.
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July 29, 2012 Re: Writing very large files 50+ GB | ||||
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Posted in reply to Regan Heath | 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.
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