Hi, This is a problem on signal handling. I have an multi-threaded application which works find on AIX but am facing problems on Linux. I was browsing though the web and thought this might be the right place to ask the question. Could you please advice ? I am executing a semop call in a function which is called from a signal handler. Since semop call returns an error code of EINTR when it is interrupted by a signal, i need to mask the signals at the starting of this function and unmask it at the end of the function. On Aix i use sigthreadmask to block the signals in the thread which calls this function and everything works fine. On Linux since there is no sigthreadmask, i have to use either pthread_sigmask and sigprocmask. If i use pthread_sigmask, it masks the signals for the current thread. so if i issue a kill -2 to this process, the semop call doesn't fail. However if i issue 2 signals at a time (kill -3 <pid> ; kill -2 <pid>) the semop call fails ( the reason i feel is that some other thread which is not masking this signal gets it) (since threads implementation on linux is different than aix). This problem doesn't get solved even if i use sigprocmask. I am using Red Hat Linux release 7.2 (Enigma) Kernel 2.4.7-10 on an i686 Is sigprocmask not working as designed ? Is there any other call which can be used ? Any other suggestions ? -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
