I require the ability to run user-supplied js code, but I want to unceremoniously abort bad-behaving code *without* crashing the entire process. A fall back to the outermost call to js where the encompassing TryCatch indicates an inability to continue would be ideal, but I cannot find any documented API that would enable this.
What I have tried so far is the following: Adding a fatal error handler via SetFatalErrorHandler, and invoking TerminateExecution on the isolate within that. This does not keep the program from crashing however. I have tried using AddMemoryAllocationCallback and monitoring how much memory gets allocated, but this function does not seem to report everything that is needed by the script. In one particular instance, the callback only reported that a couple of megabytes of reported allocation in this callback before encountering a crash when I know that the offending program was trying to use far more memory than that, having several arrays that were many tens of megabytes in size. What I *have* noticed, although I do not know if I can rely upon this as defined behaviour, is that in the callback added via AddMemoryAllocationCallback, I *do* get a Free memory invocation that wants to release everything that has been allocated so far, and this does not seem to happen when the js is well behaved (as I can remove the callback when I have finished calling the js), so within this callback, I can successfully call TerminateExecution on the isolate in this case and my handling at the outermost call to js can be captured by seeing that its TryCatch is unable to continue, but I have no idea if I can actually rely on this behavior to do what I want, or if this is just a coincidence that it seems to work in the limited cases that I have tried. Is there any official way to do this, or is v8 simply unsuitable for use within a process that needs to run possibly user-provided js code? -- -- 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.
