Re: frequency of progress callback
Date: Thu, 30 Oct 2003 08:49:22 +0100 (CET)
On Wed, 29 Oct 2003, Wei Weng wrote:
> how do I specify my own frequency of progress callback?
> If I can not, what is the pre-defined frequency?
About once per second.
> Say if I pass a structure
> struct test
> int nTest;
> as the first parameter into a progress callback function (as void* clientp),
> and I happened to change the value of nTest in the progress callback, say I
> do a clientp->nTest++.
> Does it mean my nTest will increase every time progress callback being
> called? Is the void* clientp passed from one progress callback to the next
The pointer you provide to libcurl will be provided to the callback every time
it is called, yes. If you pass the pointer to a struct of yours, you'll get
the same pointer to the same struct passed to the callback every time it is
> What if the size of the file is a 64 bit integer?
> The progress callback function only has double as dl/up size data type.
libcurl doesn't support file sizes bigger than 2GB. We need to fix this, and I
welcome all help I can get.
And when we fix this, we will need to change the variable types provided to
the progress callback, yes. I would say we will solve that issue by
introducing a new CURLOPT_ option that gets called with the larger variable
type, to remain backwards compatible with older apps.
-- Daniel Stenberg -- curl: been grokking URLs since 1998 ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/Received on 2003-10-30