similar to: child process

A prior patch highlighted the following leak: when any construction step fails in the parent after fork(), the child process is leaked. We could plug the leak by inserting a new error handling section for killing the child process and reaping it with waitpid(). However, it would raise some new questions (what signal to send, ensure the child not ignore that signal, hope that whatever process

On Tue, Jan 24, 2017 at 7:06 PM, Henrik Bengtsson <henrik.bengtsson at gmail.com> wrote: > When using multicore-forking of the parallel package, is it possible > for a child process to know that it is a fork? R internally uses R_isForkedChild to prevent certain operations within the fork. However I don't think this is exported anywhere. You could do something like: extern

When using multicore-forking of the parallel package, is it possible for a child process to know that it is a fork? Something like: parallel::mclapply(1:10, FUN = function(i) { test_if_running_in_a_fork() }) I'm looking into ways to protect against further parallel processes (including threads), which not necessarily are created via the parallel:mc* API, are being spawned off recursively.

Dear all, I would like to start a process from an R program in such a way that I can both feed input into the process and read the process's output. It seems that in R, I can have a pipe for writing into another process's input or a pipe for reading from another process's output, but not both. Doing both necessitates forking, such that the child can start the external process and

Dear all, I would like to start a process from an R program in such a way that I can both feed input into the process and read the process's output. It seems that in R, I can have a pipe for writing into another process's input or a pipe for reading from another process's output, but not both. Doing both necessitates forking, such that the child can start the external process and

I''ve found what I think is a deadlock in the dtrace fork code. My only Solaris test machine is a single cpu box, where I have been unable to reproduce in the field so far. I''ve been able to reproduce on other platforms. Here is the scenario. You''ve got a target process, which has static probes. It is calling fork(), which causes it to end up at line 330 in fork.c:

Trying to install the portable OpenSSH on Solaris 2.6. Compiling from openssh-2.1.0.tar.gz using gcc. Compiles and installs fine. sshd starts fine. First connection from another system works. Child sshd is forked, but the parent dies and logs: May 16 11:40:56 qtrade-dev sshd[6510]: error: Couldn't wait for child '/usr/bin/ ls -alni' completion: No child processes May 16 11:40:56

https://bugzilla.mindrot.org/show_bug.cgi?id=2071 Bug ID: 2071 Summary: sshd closes stderr but not stdout when child process exits Classification: Unclassified Product: Portable OpenSSH Version: 6.1p1 Hardware: All OS: All Status: NEW Severity: normal Priority: P5

>From a ruby program I would like to start another process which should continue to run even after the parent process dies. Is there any way I could achive this? >From the child process I want to start an instance of SCGI server which should continue to run even if the parent process dies. Thanks in Advance, Jatinder -------------- next part -------------- An HTML attachment was

> John Horne [SMTP:J.Horne at plymouth.ac.uk] wrote: > > Emanuel Borsboom <emanuel at heatdeath.org> wrote: >> Trying to install the portable OpenSSH on Solaris 2.6. Compiling from >> openssh-2.1.0.tar.gz using gcc. Compiles and installs fine. sshd >> starts fine. First connection from another system works. Child sshd is >> forked, but the parent dies

Hello, There seems to be a bug with the value of the thread ID (TID) that is generated by XRay when calling fork(). The value of the TID of the child has the same TID as its parent (this is seen in the “thread: “ field of the YAML output produced by the llvm-xray tool). This is a problem as the trace generated contains the same TID for the parent and children processes, making it difficult to

> -----Original Message----- > From: Date, Shashank [Non-Employee] > [mailto:Shashank.Date@mail.sprint.com] > Sent: Friday, February 20, 2004 11:04 AM > To: Berger, Daniel > Cc: phasis@nownuri.net > Subject: BUG report: win32-process > > > gets does not work in the forked process. > > See win32 and cygwin transcripts below: > >

http://bugzilla.mindrot.org/show_bug.cgi?id=241 Summary: When I kill scp, the underlying ssh child process remains alive Product: Portable OpenSSH Version: 3.1p1 Platform: All OS/Version: Linux Status: NEW Severity: minor Priority: P3 Component: scp AssignedTo: openssh-unix-dev

I am facing problem in resque process. I have following implementation: /config/resque_schedule.yml add_jobs_to_queue: cron: "15 * * * *" class: FooJob description: "Find results from class Bar and put on queue" /app/jobs/foo_job.rb class FooJob @queue = :normal def self.perform Bar.add_jobs end end app/models/bar.rb class Bar def self.add_jobs

Initial problem: When running 'make test' the hands.test fails as indicated in problem #3711 and includes the line rsync error: unexplained error (code 63) at main.c(537) The code # changes each time the test is run. Using HP C-ANSI-C B.11.11.02. configure line: CFLAGS="-O" ./configure --prefix=/opt/local In tracking this down, this is what I found: In main.c a

Hi, all, I pressed Ctrl+C in R process, and found that the child process which was spawned by using "pipe" is terminated due to this. Are there any way to work around it, so that the child process can run happily without being terminated? Or can we block the signal for the child process? 1. I used pipe to spawn one C++ process, which will running in a loop without exiting immediately.

I've recently been trying to run the United Devices THINK agent under wine. On installation, all was going well until the registration process tried to connect to the UD server, when it failed to establish contact. Investigation of the debug messages revealed that it was getting the address to contact vi a call into msvcrt.getenv() which was returning the value "C:\WINDOWS" for all

I cant seem to get the io from a child process of a worker back to my client. There most be something academic I''m missing :/. I looked at examples in Pickaxe and Ruby PLEAC library ... and I believe the following should work: # called from within do_work... def backup(repo) logger.info(''SvnWorker backup repo ''+repo) tmp = [] my_project =

We are seeing this error in the logs every minute - [2014/07/23 16:40:59.829260, 2, pid=13355] ../source3/smbd/server.c:437(remove_child_pid) Could not find child 19021 -- ignoring I know there is an old bug/fix - https://bugzilla.samba.org/show_bug.cgi?id=8269 smb.conf entries related to printer and printcap (disabled) - load printers = no printcap name = /dev/null printcap cache time =

I''m trying to run an external Ruby script from my Rails app. To do this i''m using this function def fork_with_new_connection(config, my_class = ActiveRecord::Base) pid = fork do begin my_class.establish_connection(config) yield ensure my_class.remove_connection end end Process.detach(pid) end Then, within my controller I do this: