search for: sigints

All, When logging into an HP-UX 10.2 system from a Windows NT machine running Cygwin and openssh 2.9p2, control-c sends a sigint to the ssh client on the NT system, thus killing the ssh process. Interestingly enough, this behavior is only observed when using X11 forwarding. I can eliminate the behavior by changing clientloop.c to ignore SIGINT (signal(SIGINT, SIG_IGN) ) but then I'm bak to

Hi All, I realize that this is not a really nice reprex, but anyone has an idea why a background R session would "remember" an interrupt (SIGINT) on Unix? rs <- callr::r_session$new() rs$interrupt() # just sends a SIGINT #> [1] TRUE rs$run(function() 1+1) #> Error: interrupt rs$run(function() 1+1) #> [1] 2 It seems that the main loop somehow stores the SIGINT it

Yeah, I get that they are async. What happens is that the background process is not doing anything when the process gets a SIGINT. I.e. the background process is just listening on its standard input. AFAICT for an interactive process such a SIGINT is just swallowed, with a newline outputted to the terminal. But apparently, for this background process, it is not swallowed, and it is triggered

Hi, I was wondering if anybody knew how to trap SIGINTs (ie Ctrl-C) in backend C++ code for R extensions? I'm writing a package that uses the GPU for some hefty matrix operations in a tightly coupled parallel algorithm implemented in CUDA. The problem is that once running, the C++ module cannot apparently be interrupted by a SIGINT, leaving the us...

OK, I managed to create an example without callr, but it is still somewhat cumbersome. Anyway, here it is. Terminal 1: mkfifo fif R --no-readline --slave --no-save --no-restore < fif Terminal 2: cat > fif Sys.getpid() This will make Terminal 1 print the pid of the R process, so we can send a SIGINT: Terminal 3: kill -INT pid The R process is of course still running happily. Terminal 2

Unfortunately --interactive also makes the session interactive(), which is bad for me, as it is a background session. In general, I don't want the interactive behavior, but was wondering if I could send as SIGINT to try to interrupt the computation of the background process, and if that does not work, then I would send a SIGKILL and start up another process. It all works nicely, except for

Can you give an example without callr? The key is how is the process stated and what it is doing which is entirely opaque in callr. Windows doesn't have signals, so the process there is entirely different. Most of the WIN32 processing is event-based. Cheers, Simon > On Apr 30, 2019, at 4:17 PM, G?bor Cs?rdi <csardi.gabor at gmail.com> wrote: > > Yeah, I get that they are

A Simon pointed out the interrupt is recorded but not processed until a safe point. When reading from a fifo or pipe R runs non-interactive, which means is sits in a read() system call and the interrupt isn't seen until sometime during evaluation when a safe checkpoint is reached. When reading from a terminal R will use select() to wait for input and periodically wake and check for

That doesn’t work too. :-( Last login: Mon Mar 19 19:18:16 on console iMac:~ andre$ mount /dev/disk0s2 on / (hfs, local, journaled) devfs on /dev (devfs, local, nobrowse) map -hosts on /net (autofs, nosuid, automounted, nobrowse) map auto_home on /home (autofs, automounted, nobrowse) /dev/disk2 on /Volumes/G-DRIVE Thunderbolt 3 (hfs, local, nodev, nosuid, journaled, noowners) iMac:~ andre$

A long-time missing feature (or bug, depending on how you look at it) is that a Ctrl-C at the password prompt in scp does not restore the terminal settings, thus dropping you to the command prompt without any keyboard echo. (A "reset" command will fix it.) This is a pretty regular occurance for me, and some others I've talked to - usually when you realize that the scp command you

Gabor, I think you're talking about two independent things. You can interrupt the computation, no question about that. It's just that if you send an interrupt while you're *not* doing any computations, it will be signaled but not raised until the interrupts are checked since there is no one to check it. This goes back to my original response - the interactive REPL calls

https://bugzilla.samba.org/show_bug.cgi?id=9502 Summary: Deamon deadlock at stop (SIGINT caught) Product: rsync Version: 3.0.7 Platform: x64 OS/Version: Linux Status: NEW Severity: normal Priority: P5 Component: core AssignedTo: wayned at samba.org ReportedBy: jurij at ocslab.com

# HG changeset patch # User inakoshi.hiroya@jp.fujitsu.com # Date 1191287395 -28800 # Node ID 5543e74774a826b1781893982ed5052312b820fc # Parent 83239b2890723e0c06bad507bb273a970784b18e Flush stdout when xentop -b gets SIGINT and SIGTERM. It is useful when you stop xentop -b by keyboard interrupt or by other programs such as killall from a batch script. You would have missed the bottom part of

In preparation for the klibc 2.0.5 release I wrote a basic test script which: 1. Builds for each architecture (with a cross-compiler where needed) 2. Runs several statically-linked programs (using qemu-user where needed): a. Many self-test programs b. "sh -c exit" c. "sh -c '.../bin/true; exit'" The results for the architectures I was able to test are:

What is the order that rsync uses to set permissions? Time Machine directories have ACL permissions that basically prohibit making any changes of any kind. In order to make a backup of the directory, you would need to set those permissions after copying everything in the subdirectories. Is rsync smart enough to do it in that order? On 2018-03-19, at 10:44 PM, Andre Althoff via rsync <rsync

...the lib, but I am somewhat at a loss in terms of what I can do within the handler that would let me pass control back to R. void myhandler (int s) { error("interrupt caught!"); } Works, but I am sure it isn't supposed to. In fact I know it is wrong, since after interrupting once SIGINTs are subsequently ignored, even if I reset the signal to the original one (as returned by the first call to signal). Currently I can exit(1) of course, but that is tragically bad form IMO, though will work in my situation. In short, what is the proper way to handle SIGINT in external code that is...

Hi Rsync Support, Recently we encountered issue on our prod environment because the rsync seems hanging, it took time building the list.Previously the rsync process was working before 10:24am not until 10:25am. See sample log below. We have one source server and the data files will be rsync to 2 webservers. Please advise what could be the cause of the issue. Please let me know if you need

Hi, As the man page says, the --partial flag is to "keep partially transferred files". I'm assuming if I don't have partial flag any partially transferred files should be deleted. However this is not what I'm seeing. Example: (Using a big file so that rsync times a while to run. This gives me time to hit CTRL-C for the SIGINT). > mkdir example > dd if=/dev/zero

Interrupts are not synchronous in R - the signal only flags the request for interruption. Nothing actually happens until R_CheckUserInterrupt() is called at an interruptible point. In you case your code is apparently not calling R_CheckUserInterrupt() until later as a side-effect of the next evaluation. Cheers, Simon > On Apr 30, 2019, at 3:44 PM, G?bor Cs?rdi <csardi.gabor at

How would you spec out a call to Signal.trap (a ^C or a unix SIGINT)? Scott