Re: [v8-users] Instrumentation API in V8
Thanks Jakob. I was hoping I could do this in V8, in order to target Node.js applications, in addition to browser code. I will dig the source code and see if I can directly plug my changes with a reasonable effort. Stefan On Tuesday, November 25, 2014 9:02:09 AM UTC+1, Jakob Kummerow wrote: > > No. > > You can get method-level tracing with --trace, and the built-in ARM/MIPS > simulators can trace simulated machine instructions with --trace-sim. > > If you really need tracing with the granularity of AST nodes or similar, > it would probably be easier to use a JS engine that can run in purely > interpreted mode. > > > On Tue, Nov 25, 2014 at 12:26 AM, Stefan Bucur > wrote: > >> Hi, >> >> Is there any recommended way (perhaps an API?) to insert instrumentation >> in JavaScript code executed by V8? >> >> Ideally, I would expect a callback mechanism that allows me to intercept >> & change the code at different representations levels (e.g., AST, Hydrogen >> IR, or Lythium native code). My current use case is to log all the >> JavaScript instructions executed by the interpreter---this essentially >> would give me a dynamic trace of the running script. >> >> Thanks, >> Stefan >> >> -- >> -- >> 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.
Re: [v8-users] Instrumentation API in V8
No. You can get method-level tracing with --trace, and the built-in ARM/MIPS simulators can trace simulated machine instructions with --trace-sim. If you really need tracing with the granularity of AST nodes or similar, it would probably be easier to use a JS engine that can run in purely interpreted mode. On Tue, Nov 25, 2014 at 12:26 AM, Stefan Bucur wrote: > Hi, > > Is there any recommended way (perhaps an API?) to insert instrumentation > in JavaScript code executed by V8? > > Ideally, I would expect a callback mechanism that allows me to intercept & > change the code at different representations levels (e.g., AST, Hydrogen > IR, or Lythium native code). My current use case is to log all the > JavaScript instructions executed by the interpreter---this essentially > would give me a dynamic trace of the running script. > > Thanks, > Stefan > > -- > -- > 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.
[v8-users] Instrumentation API in V8
Hi, Is there any recommended way (perhaps an API?) to insert instrumentation in JavaScript code executed by V8? Ideally, I would expect a callback mechanism that allows me to intercept & change the code at different representations levels (e.g., AST, Hydrogen IR, or Lythium native code). My current use case is to log all the JavaScript instructions executed by the interpreter---this essentially would give me a dynamic trace of the running script. Thanks, Stefan -- -- 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.
