Re: [julia-users] Re: How to fork a child process and communicate low-level system calls between parent process (popen)?
Great, thanks for the info on base/poll.jl On Sunday, June 15, 2014 9:21:29 PM UTC-4, Jameson wrote: > > It's is unclear what you are asking for. > > The Julia Base library includes a high-performance, cross-platform > framework for responding to file change events on disk. (see base/poll.jl) > > Interprocess communication is done through the creation of a named pipe. > (see base/spawn.jl for examples) > > popen is unrelated to fork, select, or file notification. although the > equivalent call in julia is more object-based, around the Cmd object and > backtick (`) notation, and functions such as run, spawn, and open > > > On Sun, Jun 15, 2014 at 7:54 PM, Alireza Nejati > wrote: > >> It's my impression that to do this sort of stuff you should use Julia's >> built-in process creation/communication facilities. Have a look at this >> page: http://docs.julialang.org/en/release-0.1/manual/parallel-computing/ >> >> >> On Monday, June 16, 2014 10:57:28 AM UTC+12, Aerlinger wrote: >>> >>> I'm writing a package to allow a Julia program to asynchronously listen >>> and respond to file change events on disk, but I've hit a bit of a >>> stumbling block. I need a way to fork a Julia process and have it listen to >>> specific OS system calls such as select, and then notify the parent process >>> of the event. This is sometimes called 'popen' in other languages ( >>> http://www.ruby-doc.org/core-2.1.2/IO.html#method-c-popen). I'm aware >>> that there are a bunch of functions for handling general IO ( >>> http://julia.readthedocs.org/en/latest/stdlib/base/#i-o) but they don't >>> quite give me the control and interprocess communication that I'm looking >>> for. There was also a short discussion about this a couple of years ago: >>> https://groups.google.com/forum/#!topic/julia-dev/l-4HLYX2qSI. Was >>> wondering if there have been any developments or if anyone else has some >>> insight on this capability. >>> >>> Thanks! >>> >> >
[julia-users] Re: How to fork a child process and communicate low-level system calls between parent process (popen)?
Kevin: Thanks, yeah I didn't pay any attention to the version On Monday, June 16, 2014 10:57:28 AM UTC+12, Aerlinger wrote: > > I'm writing a package to allow a Julia program to asynchronously listen > and respond to file change events on disk, but I've hit a bit of a > stumbling block. I need a way to fork a Julia process and have it listen to > specific OS system calls such as select, and then notify the parent process > of the event. This is sometimes called 'popen' in other languages ( > http://www.ruby-doc.org/core-2.1.2/IO.html#method-c-popen). I'm aware > that there are a bunch of functions for handling general IO ( > http://julia.readthedocs.org/en/latest/stdlib/base/#i-o) but they don't > quite give me the control and interprocess communication that I'm looking > for. There was also a short discussion about this a couple of years ago: > https://groups.google.com/forum/#!topic/julia-dev/l-4HLYX2qSI. Was > wondering if there have been any developments or if anyone else has some > insight on this capability. > > Thanks! >
Re: [julia-users] Re: How to fork a child process and communicate low-level system calls between parent process (popen)?
It's is unclear what you are asking for. The Julia Base library includes a high-performance, cross-platform framework for responding to file change events on disk. (see base/poll.jl) Interprocess communication is done through the creation of a named pipe. (see base/spawn.jl for examples) popen is unrelated to fork, select, or file notification. although the equivalent call in julia is more object-based, around the Cmd object and backtick (`) notation, and functions such as run, spawn, and open On Sun, Jun 15, 2014 at 7:54 PM, Alireza Nejati wrote: > It's my impression that to do this sort of stuff you should use Julia's > built-in process creation/communication facilities. Have a look at this > page: http://docs.julialang.org/en/release-0.1/manual/parallel-computing/ > > > On Monday, June 16, 2014 10:57:28 AM UTC+12, Aerlinger wrote: >> >> I'm writing a package to allow a Julia program to asynchronously listen >> and respond to file change events on disk, but I've hit a bit of a >> stumbling block. I need a way to fork a Julia process and have it listen to >> specific OS system calls such as select, and then notify the parent process >> of the event. This is sometimes called 'popen' in other languages ( >> http://www.ruby-doc.org/core-2.1.2/IO.html#method-c-popen). I'm aware >> that there are a bunch of functions for handling general IO ( >> http://julia.readthedocs.org/en/latest/stdlib/base/#i-o) but they don't >> quite give me the control and interprocess communication that I'm looking >> for. There was also a short discussion about this a couple of years ago: >> https://groups.google.com/forum/#!topic/julia-dev/l-4HLYX2qSI. Was >> wondering if there have been any developments or if anyone else has some >> insight on this capability. >> >> Thanks! >> >
Re: [julia-users] Re: How to fork a child process and communicate low-level system calls between parent process (popen)?
On Sun, Jun 15, 2014 at 4:54 PM, Alireza Nejati wrote: > It's my impression that to do this sort of stuff you should use Julia's > built-in process creation/communication facilities. Have a look at this > page: http://docs.julialang.org/en/release-0.1/manual/parallel-computing/ > That's a pretty old version of the manual. You're better off with http://julia.readthedocs.org/en/latest/manual/parallel-computing/ Cheers, Kevin > > On Monday, June 16, 2014 10:57:28 AM UTC+12, Aerlinger wrote: >> >> I'm writing a package to allow a Julia program to asynchronously listen >> and respond to file change events on disk, but I've hit a bit of a >> stumbling block. I need a way to fork a Julia process and have it listen to >> specific OS system calls such as select, and then notify the parent process >> of the event. This is sometimes called 'popen' in other languages ( >> http://www.ruby-doc.org/core-2.1.2/IO.html#method-c-popen). I'm aware >> that there are a bunch of functions for handling general IO ( >> http://julia.readthedocs.org/en/latest/stdlib/base/#i-o) but they don't >> quite give me the control and interprocess communication that I'm looking >> for. There was also a short discussion about this a couple of years ago: >> https://groups.google.com/forum/#!topic/julia-dev/l-4HLYX2qSI. Was >> wondering if there have been any developments or if anyone else has some >> insight on this capability. >> >> Thanks! >> >
[julia-users] Re: How to fork a child process and communicate low-level system calls between parent process (popen)?
It's my impression that to do this sort of stuff you should use Julia's built-in process creation/communication facilities. Have a look at this page: http://docs.julialang.org/en/release-0.1/manual/parallel-computing/ On Monday, June 16, 2014 10:57:28 AM UTC+12, Aerlinger wrote: > > I'm writing a package to allow a Julia program to asynchronously listen > and respond to file change events on disk, but I've hit a bit of a > stumbling block. I need a way to fork a Julia process and have it listen to > specific OS system calls such as select, and then notify the parent process > of the event. This is sometimes called 'popen' in other languages ( > http://www.ruby-doc.org/core-2.1.2/IO.html#method-c-popen). I'm aware > that there are a bunch of functions for handling general IO ( > http://julia.readthedocs.org/en/latest/stdlib/base/#i-o) but they don't > quite give me the control and interprocess communication that I'm looking > for. There was also a short discussion about this a couple of years ago: > https://groups.google.com/forum/#!topic/julia-dev/l-4HLYX2qSI. Was > wondering if there have been any developments or if anyone else has some > insight on this capability. > > Thanks! >
