I am implementing shared memory IPC for inter-process communication. I have created a class that consists of a ring buffer and a mutex. When the shared memory segment is created, the class object must be initialized in a thread-safe way to ensure synchronized communication. But this has proven more challenging than I initially anticipated. The best solution I have found so far involves utilizing file creation/status flags to block communication until initialization is complete, as suggested here: Using pthread mutex shared between processes correctly.
Are there alternative methods to achieve thread-safe initialization of a shared memory segment in Linux? For example, could a named semaphore be utilized to initialize the segment and subsequently use the mutex that is placed in the shared memory? I have also come across Boost's Managed Memory Segment which claims to solve this issue, but I am curious about how they accomplish it.
