Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
POSIX’s mutex is equivalent to Win32’s CRITICAL_SECTION — its scope is limited to a single process. Win32’s mutex (Actually called a “mutant” in NT land) serves as a cross process locking mechanism. What is pthreads’ equivalent for cross-process locks?
It’s a pthread_mutex_t with a pshared attribute set to PTHREAD_PROCESS_SHARED . However, you’re responsible to place such a mutex in shared memory, that all processes can access – so it’s not as simple as the win32 api.
Perhaps closer to win32 is a posix or sysv semaphore. Traditionally, synchronization across processes has also been done using file locks e.g. flock or lockf (this is in no way as slow as it might sound)