Re: [racket-dev] feature request: thread-safe memoize-evt

2015-01-30 Thread Jan Dvořák
Thanks for your time. On Thu, 2015-01-29 at 12:55 -0700, Matthew Flatt wrote: Would the simpler `once-evt` work in your situation, or do you need the guarantee that only one wait of E happens at a time? OK, my original goal is to implement a remote method call multiplexer. The kind where you

Re: [racket-dev] feature request: thread-safe memoize-evt

2015-01-29 Thread Jan Dvořák
On Thu, 2015-01-29 at 16:41 -0600, Robby Findler wrote: That is, I thought you could just create a separate thread that sync's on E_b and then whenever you get a value from it, then the E_m would just continue to produce that all the time. But I think you're saying that wouldn't work? The

[racket-dev] feature request: thread-safe memoize-evt

2015-01-28 Thread Jan Dvořák
Hi, I would like to ask for another extension of the Racket's event handling system. A `memoize-evt` constructor with following semantics: Given a base event E_b, memoize-evt will produce a memoizing event E_m. Synchronizing on E_m from any number of threads will block until a single value is


2014-09-26 Thread Jan Dvořák
Hi, about the - the site is getting rather large. Wouldn't server-side filtering work better than the client javascript solution? Plus I often have trouble submitting new packages, the form could easily be done in the traditional way and the experience would be

[racket-dev] BUG: busy-waiting

2014-09-03 Thread Jan Dvořák
Hello, I am hitting a rather uncomfortable bug that causes runtime to start internal busy-waiting at around: #0 scheme_block_until(_f=syncing_ready, fdf=scheme_syncing_needs_wakeup) at ../src/thread.c:5199 #1 do_sync (name=sync, with_break=0, with_timeout=0) at ../src/thread.c:7109

Re: [racket-dev] current packages' docs, errors, and conflicts

2014-07-08 Thread Jan Dvořák
On Tue, 2014-07-08 at 12:46 +0100, Matthew Flatt wrote: The rightmost column of the table may need some explanation. The column highlights conflicts among names of package-installed executables, foreign libraries, and documents. Currently, all the conflicts are document names, because several

Re: [racket-dev] current packages' docs, errors, and conflicts

2014-07-08 Thread Jan Dvořák
On Tue, 2014-07-08 at 13:14 +0100, Matthew Flatt wrote: A package X that provides a collection X of the same name should probably also call its documentation X. Thanks, I've fixed mine. Looking forward to having pkg-docs at a single place. :-) _ Racket Developers

[racket-dev] request: replace-evt

2014-07-07 Thread Jan Dvořák
Hi, I would like to humbly request a new `replace-evt` procedure that would work as `wrap-evt` except that when it produces another `evt?`, `sync` replaces the old event with the newly produced one and restarts. It will be a good replacement for threads and channels when filtering events or