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Questions tagged [interprocess]

A capability supported by some operating systems that allows one process to communicate with another process. The processes can be running on the same computer or on different computers connected through a network. It enables one application to control another application, and for several applications to share the same data without interfering with one another.

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Communication (interprocess) between applications

I'm about to write a "server" application that is responsible to talk with external hardware. The application shall handle requests from clients. The clients send a message to the server, and if the server is busy with doing stuff with the hardware…
anra
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Boost.Interprocess: testcase gives different results if compiled with or without optimization (GCC)

I'm having some troubles with Boost.Interprocess allocators when compiling with optimization. I managed to get this down to a 40 lines testcase, most of which is boilerplate. Just have a look at create() and main() functions in the code…
user319799
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boost interprocess file_lock does not work with multiple processes

I seem to be having an issue with boost::interprocess::file_lock I have process 1 that is essentially boost::interprocess::file_lock test_lock("testfile.csv"); test_lock.lock(); sleep(1000); test_lock.unlock(); When I run a second…
user788171
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pipe, fork, and non-blocking IPC

So I was trying to run a system command (or exec, or whatever) at a child process after a fork(), and push some input to it, and then get its output. It looks like this after the fork(), and pc and cp is parent-child and child-parent pipes. case…
kamziro
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Sharing variables in shared library

In the book "The Linux Programming Interface" it reads: Although the code of a shared library is shared among multiple processes, its variables are not. Each process that uses the library has its own copies of the global and static variables that…
ataraxis
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C# - 2 clientside programs trading variable information -- is there a better way?

I am attempting to send player information from my Game to my network client to then be sent off to the server. Currently the ClientNetwork -> ClientGame relationship is held with XML files. They read/write back and forth at very high speeds. If you…
Remm
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Class design for self-linked classes with generic pointer type

I am currently modifying a complex class that has nodes pointing to themselves just like linked lists or graphs. I want it to be used in shared memory using boost::interprocess functions. Now I am looking for the way to redesign it such that it…
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Two WinForms applications

I have 2 different C# programs, both of them contain a form application. How can I run both these 2 programs in one of them? I added, using the existing project option, progr1 in program 2. Now I want to run program2. When program 2 runs and it pops…
elisa
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Can serialization be replaced by a simple static_cast to retrieve data shared between two processes in C++?

Let's say I have a process written in C++ that has many instances of class A. class A { std::vector> tab; /* other random data */ } Once created, these objects should be accessed (read-only) by other processes of a…
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Interprocess communication between 32- and 64-bit apps on Windows x64

We'd like to support some hardware that has recently been discontinued. The driver for the hardware is a plain 32-bit C DLL. We don't have the source code, and (for legal reasons) are not interested in decompiling or reverse engineering the…
Brian Gillespie
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Process.Start vs Process `p = new Process()` in C#?

As is asked in this post, there are two ways to call another process in C#. Process.Start("hello"); And Process p = new Process(); p.StartInfo.FileName = "hello.exe"; p.Start(); p.WaitForExit(); Q1 : What are the pros/cons of each approach? Q2 :…
prosseek
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Boost.Process - how to make a process run a function?

So I try to do something with Boost.Process though it has not been accepted into the Boost distribution yet. simpliest programm would look like #include #include #include namespace bp = ::boost::process;…
Rella
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Transfer a pointer through boost::interprocess::message_queue

What I am trying to do is have application A send application B a pointer to an object which A has allocated on shared memory ( using boost::interprocess ). For that pointer transfer I intend to use boost::interprocess::message_queue. Obviously a…
Yordan Pavlov
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Reference Counting Boost Interprocess Shared Memory

I'm using boost::interprocess to share data between processes via managed shared memory. Clients may read or write to the shared memory. Clients first attempt to open an existing shared memory: managed_shared_memory(open_only, "MySharedMemory"); If…
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Are intermediate files bad practice?

I was recently downvoted (which only bugged me a little :) ) for an answer I gave to this question. The person offered no explanation for the down vote which started me thinking: "Why would you avoid producing intermediate files?" Especially in a…
Chris Pfohl
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