memory-mapped-files

问题 I saw from the documentation of userfaultfd https://manpages.debian.org/testing/manpages-dev/userfaultfd.2.en.html http://man7.org/linux/man-pages/man2/ioctl_userfaultfd.2.html that userfaultfd will start supporting shared map since kernel 4.11. However, the documentation still looks very ambiguous in the sense that I'm still wondering will these include supporting file-backed mmap (which can also be MAP_SHARED)? 回答1: To answer definitively, since the information is not in the manual page(s),

问题 I saw from the documentation of userfaultfd https://manpages.debian.org/testing/manpages-dev/userfaultfd.2.en.html http://man7.org/linux/man-pages/man2/ioctl_userfaultfd.2.html that userfaultfd will start supporting shared map since kernel 4.11. However, the documentation still looks very ambiguous in the sense that I'm still wondering will these include supporting file-backed mmap (which can also be MAP_SHARED)? 回答1: To answer definitively, since the information is not in the manual page(s),

问题 I saw from the documentation of userfaultfd https://manpages.debian.org/testing/manpages-dev/userfaultfd.2.en.html http://man7.org/linux/man-pages/man2/ioctl_userfaultfd.2.html that userfaultfd will start supporting shared map since kernel 4.11. However, the documentation still looks very ambiguous in the sense that I'm still wondering will these include supporting file-backed mmap (which can also be MAP_SHARED)? 回答1: To answer definitively, since the information is not in the manual page(s),

来源： https://stackoverflow.com/questions/61363499/memorymappedfiles-in-c-sharp-for-ipc-between-docker-containers

问题 I'm facing a new problem, that occured while coding my IPC for my app. Before UWP I was able to use the directive using System.IO.MemoryMappedFiles; sucessfully. Now I can't use using System.IO.MemoryMappedFiles; and I need it. Is everyone facing the same issue? If yes, how do you solved it? My app doesn't compile anymore. I already tried to reimport the System.Core.dll as a reference and with DllImport, neither worked. 回答1: Direct inter-process communication is not available in Universal

问题 Is there a method to save a numpy memmap array into a .npy file? Apparently, there is a method to load such an array from a .npy file as follows data = numpy.load("input.npy", mmap_mode='r') but flushing the file is not equivalent to storing it in a .npy format. If flushing is the only way to go then is there a way to infer the shape of the stored array? I would prefer to have dynamic shape which is automatically stored and retrieved (possibly as memmap again) in another script. I have

问题 I have a situation similar to this previous question but different enough the previous answers don't work. I am generating a PDF file and then telling Windows to open that file using whatever PDF application the user has installed: new Process { StartInfo = new ProcessStartInfo(pdfFileName) { UseShellExecute = true } }.Start(); This is for a client and they have specified that the PDF file always has the same name. The problem is, if the application they are using to view PDF files is

问题 I have a situation similar to this previous question but different enough the previous answers don't work. I am generating a PDF file and then telling Windows to open that file using whatever PDF application the user has installed: new Process { StartInfo = new ProcessStartInfo(pdfFileName) { UseShellExecute = true } }.Start(); This is for a client and they have specified that the PDF file always has the same name. The problem is, if the application they are using to view PDF files is

问题 There exists the mmap module for node.js: https://github.com/bnoordhuis/node-mmap/ As the author Ben Noordhuis notes, accesing mapped memory can block, which is why he does not recommend it anymore and discontinued it. So I wonder how would I design a non-blocking memory mapping module for node.js? Threading, Fibers, ? Obviously this nearby raises the question if threading in node.js would just happen elsewhere instead of the request handler. 回答1: When talking about implementing some native

问题 I'm trying to illustrate the difference in performance between traditional IO and memory mapped files in java to students. I found an example somewhere on internet but not everything is clear to me, I don't even think all steps are nececery. I read a lot about it here and there but I'm not convinced about a correct implementation of neither of them. The code I try to understand is: public class FileCopy{ public static void main(String args[]){ if (args.length < 1){ System.out.println(" Wrong