Ian,
A bit more complete (but without the blocking problem fixed) follows:
jev_timer=: 3 : 'i.5'
jjs'setTimeout("jdoajax([],\"\",\"jev_timer[0\");",4000);'
Note that the name jev_timer input line is not shown as lines that start
with jev_ are assumed to be events and are not logged.
Let me know if you'd like the blocking problem fixed.
On Thu, Jan 5, 2012 at 2:18 PM, Eric Iverson <eric.b.iver...@gmail.com>wrote:
> Here is a very rough start on showing how to do a timer event for JHS.
>
> jjs'setTimeout("jdoajax([],\"\",\"a=: 123\");",4000);'
>
> Verb jjs executes javascript sentences. The setTimeout javascript sentence
> runs its first arg (a javascript sentence) when 4 seconds has elapsed. The
> \" sequence escapes the " and allows "s inside the quoted string.
>
> The next step is to replace the a=: 123 J sentence with a call to your
> timer event handler.
>
> This solution is not complete because the ajax execution of the J sentence
> is blocked if a J sentence is already running. This can be detected and
> dealt with. This could be done by a more complicated jjs sentence that
> requeues the setTimeout until it is allowed to execute. A better solution
> would be that the core ajax framework recognize a blocked timer event and
> to run it immediately after the blocking sentence has finished.
>
> If the above meets your requirements except for the blocking problem I
> will clean things up and enhance the ajax request framework to run a
> blocked timer event.
>
>
> On Thu, Jan 5, 2012 at 2:03 PM, Eric Iverson <eric.b.iver...@gmail.com>wrote:
>
>> cd (calls to external libraries) works on all platforms and specifically
>> J can use cd to call dylibs on Mac. However, the timer routine you referred
>> to is windows only and I don't know of the mac equivalent. A dylib call is
>> probably not the way to provide timer events for JHS regardless of server
>> platform.
>>
>>
>> On Thu, Jan 5, 2012 at 1:45 PM, David Mitchell <davidmitch...@att.net>wrote:
>>
>>> You are welcome, Ian.
>>>
>>> I am a bit curious about J support for dylibs. I currently do not have
>>> any way
>>> to try it myself, but the J DLL documentation does say:
>>>
>>> J can call procedures that are compiled in a shared library file. In
>>> Windows
>>> these files are called DLLs (dynamic link libraries) and have a .dll
>>> extension.
>>> In Linux they are called shared libraries or shared objects and have a
>>> .so
>>> extension. In Mac they are called dynamic libraries and have a .dylib
>>> extension.
>>> The term DLL is used here for all platforms. A procedure in a DLL is
>>> called by
>>> its name and filename.
>>>
>>> It is true that there may not be dylib functionality for Darwin that
>>> matches
>>> what Windows has for timer usage, but I saw a function
>>> "dispatch_source_set_timer" in the GCD reference from Apple that seemed
>>> as if it
>>> might be a start.
>>>
>>> On 1/5/2012 12:54, Ian Clark wrote:
>>> > Thanks, David.
>>> >
>>> > But this uses 'dll'. AFAIK there's no comparable way of calling dylibs
>>> > in Darwin.
>>> >
>>> > On Thu, Jan 5, 2012 at 5:44 PM, David Mitchell<davidmitch...@att.net>
>>> wrote:
>>> >> Here is a version that works with J602 and J701 jconsole. It does
>>> not work with
>>> >> jhs or jgtk. I have not tested it extensively and it may have side
>>> effects or
>>> >> bugs that I haven't found yet.
>>> >>
>>> >> http://www.jsoftware.com/jwiki/Scripts/WindowsTimer
>>> >>
>>> >> On 1/5/2012 8:27, Ian Clark wrote:
>>> >>> How do I get a timer in j701 jhs (or jconsole)?
>>> >>>
>>> >>> I've been assuming wd (11!:0) doesn't work at all in j701 (in j602
>>> >>> you'd do: 11!:0 'timer 3' for a callback in 3 secs).
>>> >>>
>>> >>> BTW J701 help (
>>> http://www.jsoftware.com/docs/help701/dictionary/dx011.htm)
>>> >>> still refers to 11!:0 but I assume that's just because it's been
>>> >>> overlooked...?
>>> >>>
>>> ----------------------------------------------------------------------
>>> >>> For information about J forums see
>>> http://www.jsoftware.com/forums.htm
>>> >>>
>>> >> ----------------------------------------------------------------------
>>> >> For information about J forums see
>>> http://www.jsoftware.com/forums.htm
>>> > ----------------------------------------------------------------------
>>> > For information about J forums see http://www.jsoftware.com/forums.htm
>>> >
>>> ----------------------------------------------------------------------
>>> For information about J forums see http://www.jsoftware.com/forums.htm
>>>
>>
>>
>
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
