On 2012/2/5 20:02, Ivan Voras wrote:
On 5 February 2012 11:44, Garrett Cooper<[email protected]> wrote:
'make MAKE_JOBS_NUMBER=1' is the workground used right now..
David Xu suggested that it is a bug in Python - it doesn't set
process-shared attribute when it calls sem_init(), but i've tried
patching it (replacing the port patchfile file the one I've attached)
and I still get the hang.
Although I don't know where is the python bug, since I don't know the piece
of source code. But general rule to use anonymous shared semaphore between
forked processes is the semaphore should be initialized in shared memory
page
and sem_init() with pshared set 1, such as:
sem_ptr = mmap(MMAP_SHARED);
sem_init(sem_ptr, pshared=1, init_value);
Regards,
David Xu
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