Running simple "hello world" JS script on NodeJS (tracking "epic")

[castarco]

I've run the following command in my Linux machine (to see which syscalls are being sent to the kernel for a very basic NodeJS program):

strace echo "console.log('hello')" | node

and I've got the following list (taking aside the ones already implemented):

• access
• openat
• pread64
• mprotect

some of this calls could be related to Bash and not NodeJS, but if instead I run this:

strace node example.js # with the same JS script as before

we obtain this list (confirming that they are needed for NodeJS too):

• access
• openat
• pread64
• mprotect
• munmap
• set_robutst_list
• rt_sigprocmask
• prlimit64
• pipe2
• eventfd2
• clone
• madvise
• futex: futex system call #2
• epoll_ctl: Implement epoll #19
• epoll_wait: Implement epoll #19
• exit_group

I hope this can be useful to guide the next steps for this roadmap ( https://github.com/nuta/kerla/projects/1 ).

[nuta]

Thanks for sharing! This is what I needed to do next! It seems we need to allow mapping executable pages (perhaps for JIT?) and implement epoll.

On Thu, Oct 28, 2021 at 22:36 Andrés Correa Casablanca < ***@***.***> wrote: I've run the following command in my Linux machine (to see which syscalls are being sent to the kernel for a very basic NodeJS program): strace echo "console.log('hello')" | node and I've got the following list (taking aside the ones already implemented): - access - openat - mmap - pread64 - mprotect some of this calls could be related to Bash and not NodeJS, but if instead I run this: strace node example.js # with the same JS script as before we obtain this list (confirming that they are needed for NodeJS too): - access - openat - mmap - pread64 - mprotect - munmap - set_tid_address - set_robutst_list - rt_sigaction - rt_sigprocmask - prlimit64 - pipe2 - eventfd2 - clone - madvise - epoll_ctl - exit_group I hope this can be useful to guide the next steps for this roadmap ( https://github.com/nuta/kerla/projects/1 ). — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#23>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABGR2EQQDKKEA6A6SU4T6CTUJFNVNANCNFSM5G45IGIQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

-- Seiya