IPC through mutexes in shared memory

[Rolle]

Hi,

I want to achieve very performant IPC. In my case I have a tree structure of data, and my intention is to put this tree in shared memory using ashmem. However, to control access, I have heard concerns about using mutexes in shared memory. Does anyone know if this is a safe solution for access control? The only pthread mutex attribute that exists seems to be PTHREAD_PROCESS_PRIVATE.

[Glenn Kasten]

See http://man7.org/linux/man-pages/man2/futex.2.html

There might not be a syscall wrapper built in to NDK library, 

but you could write the syscall wrapper yourself.

[jeff shanab]

boost has abstractions for this kind of thing and boost works on android....maybe

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