The runtime function where you added your printf is only used for slow path. For usual comparisons we never actually run that code.
Yang On Mon, Mar 4, 2019 at 8:34 AM <examm...@gmail.com> wrote: > Hello, > > In order to understand internals of v8 engine, i want to put some "hooks" > in operators. > Here is what i've done (for testing purpose): > > v8/src/runtime/runtime-operators.cc: > > RUNTIME_FUNCTION(Runtime_Equal) { > > printf("You are trying to compare with ==\n"); > ... > } > > I have put a printf in all functions of runtime-operators.cc: > > I have recompile v8 and i have tried this javascript code (test.js) > > var min=1; > var max=10; > > > var a = Math.floor(Math.random() * Math.floor(max)); > console.log(a); > > > if (a==2) > { > console.log('OK'); > } > else > { > console.log('NOK'); > } > > I have recompiled v8 with this command: > > $ tools/dev/gm.py x64.release > > > > > and i have run: > > ./out/x64.release/d8 test.js > > I do not understand why i do not see my printf messages... > > Thanks for your help > > -- > -- > v8-dev mailing list > v8-dev@googlegroups.com > http://groups.google.com/group/v8-dev > --- > You received this message because you are subscribed to the Google Groups > "v8-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to v8-dev+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- -- v8-dev mailing list v8-dev@googlegroups.com http://groups.google.com/group/v8-dev --- You received this message because you are subscribed to the Google Groups "v8-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to v8-dev+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.