I would like to note that RequestInterrupt was not intended as a replacement for preemption. We didn't want callback executing any JavaScript in the interrupted isolate, so we put the following requirement on the interrupt callback:
*Registered |callback| must not reenter interrupted Isolate.* This requirement is not checked right now, but neither anything is guaranteed to work if you try and start executing JavaScript in the interrupted isolate from the callback or from another thread (by unlocking isolate in the callback and allowing other thread to lock it). Vyacheslav Egorov On Thu, Jun 12, 2014 at 1:10 PM, juu <julien.vouilla...@gmail.com> wrote: > Ok, I didn't notice this API available since v8 3.25. > > I will have to wait for my team to migrate to a new version of v8 then ... > > Thanks > Julien. > On Thursday, June 12, 2014 1:44:27 AM UTC+2, Jochen Eisinger wrote: >> >> >> >> >> On Tue, Jun 10, 2014 at 8:38 AM, juu <julien.v...@gmail.com> wrote: >> >>> Hello everyone, >>> >>> I'm trying to implement RequireJS on my JS Engine based on v8 (v8 3.21). >>> I have a problem with asynchronous loading and evaluation of scripts. >>> >>> The main thread initialize v8 : create its isolate, context, script etc >>> .. >>> When the main script is ready, the current isolate is locked and the >>> script is run. >>> >>> Once a " *require(anotherScript)* " is encoutered (in my main script), >>> another thread is created and is in charge of loading *anotherScript *and >>> execute it as soon as possible. >>> >>> My problem is that the main thread lock the current isolate until the >>> whole main script is executed. Which let no chance to *anotherScript *to >>> be called asynchronously ; actually it's always executed synchronously >>> since *anotherScript *manage to Lock the current isolate only once the >>> main thread is finished and unlock the current isolate. >>> >>> I use v8::Locker and v8::Locker to deal with my "multithreaded" use of >>> v8. In my version of v8 : 3.21, v8::Locker provide a preemption feature >>> which enable me to give some chance to other threads to lock v8 >>> periodically : >>> >>> /**Start preemption.When preemption is started, a timer is fired every n >>> milliseconds that will switch between multiple threads that are in >>> contention for the V8 lock. */ >>> static void StartPreemption(int every_n_ms); >>> >>> /** Stop preemption.*/ >>> static void StopPreemption(); >>> >>> But ...this feature is no longer available in the next versions of v8 >>> (since 3.23) . >>> This post confirm it : https://groups.google.com/ >>> forum/#!searchin/v8-users/StartPreemption/v8-users/ >>> E5jtPC-scp8/H-2yz4Wj_SkJ >>> >>> So here are my questions : >>> >>> Is there any other way to perform the Preemption v8 used to provide ? >>> Am I supposed to do it myself ? I dont think I can, I guess can't >>> interrupt/pause myself the execution properly... >>> >> >> I guess you can do this by using the RequestInterrupt API? >> >> best >> -jochen >> >> >> >>> Am I doing something wrong in my global use of v8 and multiple threads ? >>> >>> >>> Thanks a lot ! >>> Julien. >>> >>> -- >>> -- >>> v8-users mailing list >>> v8-u...@googlegroups.com >>> >>> http://groups.google.com/group/v8-users >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "v8-users" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to v8-users+u...@googlegroups.com. >>> >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- > -- > v8-users mailing list > v8-users@googlegroups.com > http://groups.google.com/group/v8-users > --- > You received this message because you are subscribed to the Google Groups > "v8-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to v8-users+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- -- v8-users mailing list v8-users@googlegroups.com http://groups.google.com/group/v8-users --- You received this message because you are subscribed to the Google Groups "v8-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to v8-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
