Unix Programming

Is Message passing good approach for multi-threadedapplications?
On Tue, 2008-07-22 at 07:45 -0700, David Schwartz wrote: On Jul 21, 6:18 pm, Bin Chen <binary.c...(a)gmail.com> wrote: If only one CPU exists, you can consider use a big select() to replace the threads, to see if this can simplify the design and boost your performance. No, you can't. That's a... 23 Jul 2008 15:21

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AF_UNIX connect()/bind()/listen() race
Say we have a short-lived program, C. Its job is to see whether another program, D, is running, if so, connect to it. Otherwise, launch the program, then connect to it. D's standard input is a unix domain socket that's listening for connections. (See FastCGI). The idea I had for C was to try to connect() to a sp... 22 Jul 2008 15:46

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gdb vs fortran RTL -- fight for SIGSEGV
Hi! I have to (unfortunately) debug a FORTRAN-77 program written by somebody else. The program crashes with a SIGSEGV, but I can't point the gdb debugger to a line in code, because SIGSEGV is trapped by the Fortran Runtime Library, so that it can display a stack trace and do some cleanup. What is th... 3 Aug 2008 18:10

Duplicate symbols across shared libraries
I have two libraries, A and B. B includes A.h which has a Meyers singleton implementation like the following: class ClassA { protected: static const ClassA &GetInstance() { static ClassA singleton; return singleton; } }; I then compile the libraries with the following commands: g++ -fPIC -c ... 22 Jul 2008 23:59

Problem with read(2) and pseudo-terminals
Hello, The included code fails on Linux but not on OS X. I'm struggling to understand why. I get: line 60, errno != EAGAIN && errno != EINTR: Input/output error (errno = 5) Aborted An errno value of 5 is EIO on my Linux installation. It appears to fail the 2nd time it hits that line. If I use a ... 23 Jul 2008 19:29

Quick (hopefully) question regarding dlopen
I have a library I compiled (ctypeless -> libctypeless.a libctypeless.so), and have copied the .so and .a files over to /usr/lib I use dlopen to open the library: void *dlhandle = dlopen(libfile, RTLD_NOW | RTLD_GLOBAL); with libfile as "ctypeless", "libctypeless.so", "/usr/lib/libctypeless.so" and in al... 22 Jul 2008 15:46