c++ Programming Glossary: syscallC++ force stack unwinding inside function http://stackoverflow.com/questions/10064229/c-force-stack-unwinding-inside-function the implementation of Send in the receiver calls the send syscall which either manages to send something or returns EAGAIN EWOULDBLOCK.. inform it when the socket is writable. It retries the send syscall when it's informed by the event loop that the socket is writable.. know anything about errors . In case of error e.g. send syscall fails with a real error code not EAGAIN EWOULDBLOCK the sender..
Capturing syscall stdout without writing to file in C/C++ http://stackoverflow.com/questions/1103047/capturing-syscall-stdout-without-writing-to-file-in-c-c syscall stdout without writing to file in C C I want to read the std.. hello tmp std fstream file tmp std string s file s c c syscall share improve this question Using C's popen probably the..
C++ Socket Server - Unable to saturate CPU http://stackoverflow.com/questions/1234750/c-socket-server-unable-to-saturate-cpu that only one thread can call into the kernel's epoll syscall at a time. And for very small requests this makes all the difference.. not necessarily the Linux kernel itself. The epoll syscall does support multiple threads when using edge triggered events..
http://stackoverflow.com/questions/195853/spinlock-versus-semaphore for a very short time as an optimization to avoid the syscall overhead . If a semaphore cannot be acquired it blocks giving..
Removing a non empty directory programmatically in C or C++ [duplicate] http://stackoverflow.com/questions/2256945/removing-a-non-empty-directory-programmatically-in-c-or-c done the directory is empty and you can remove it via the syscall. To enumerate directories on Unix you can use opendir readdir..
force exit from readline() function http://stackoverflow.com/questions/2340240/force-exit-from-readline-function a signal to the readline thread which would interrupt the syscall. Or if you wanted to be cleverer you could run readline in async..
C/C++ function definitions without assembly http://stackoverflow.com/questions/2442966/c-c-function-definitions-without-assembly how Linux does it. There is a file called sysdeps unix syscalls.list which is used to generate the write function automatically... script which generates the code libc sysdeps unix make syscalls.sh . So now we 胩e expecting to be able to link against a function.. which you 耱l find in sysdeps unix sysdep.h #define SYS_ify syscall_name __NR_##syscall_name Ah good old token pasting P. So basically..
C++ Portability between Windows and Linux http://stackoverflow.com/questions/3261608/c-portability-between-windows-and-linux reason that the different operating systems have different syscall conventions. The only way to get around this is with a virtualizer...
How I can get ports associated to the application that opened them? http://stackoverflow.com/questions/3306138/how-i-can-get-ports-associated-to-the-application-that-opened-them CPU intensive as the operating system has to handle every syscall made and parse internal structures dynamically. As such you'll..
c++ boost::interprocess simple application http://stackoverflow.com/questions/4278627/c-boostinterprocess-simple-application string IP_STRING_NAME Message to other process string syscall argv 0 std system syscall .c_str starting second process second.. Message to other process string syscall argv 0 std system syscall .c_str starting second process second process code managed_shared_memory..
How would you implement a basic event-loop? http://stackoverflow.com/questions/658403/how-would-you-implement-a-basic-event-loop simultaneously . How does the blocking work waitOnAll is a syscall that tells the OS to put your process on a sleep list . This..
How can I detect file accesses in Linux? http://stackoverflow.com/questions/880263/how-can-i-detect-file-accesses-in-linux A similar caveat applies to strace there is the 'openat' syscall as well and depending on your architecture there may be other.. depending on your architecture there may be other legacy syscalls as well. But not as many as with LD_PRELOAD hooks so if you..
Optimal buffer size for write(2) http://stackoverflow.com/questions/8803515/optimal-buffer-size-for-write2 to the file on say ext3 Linux filesystem using write 2 syscall and this happens in a very busy environment many similar I Os..
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