Am 20.03.2014 02:25, schrieb Duy Nguyen:
> On Thu, Mar 20, 2014 at 4:35 AM, Stefan Zager <> wrote:
>> This adds a Windows implementation of pread.  Note that it is NOT
>> safe to intersperse calls to read() and pread() on a file
>> descriptor.  According to the ReadFile spec, using the 'overlapped'
>> argument should not affect the implicit position pointer of the
>> descriptor.  Experiments have shown that this is, in fact, a lie.
>> To accomodate that fact, this change also incorporates:
>> ... which gives each index-pack thread its own file descriptor.
> If the problem is mixing read() and pread() then perhaps it's enough to do
> output_fd = dup(output_fd);

Unfortunately not, dup() / DuplicateHandle() just opens another handle to the 
same file object (i.e. sharing the same file position).

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