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Rdoc formatting.

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Patrick Mahoney 2012-03-04 10:29:43 -06:00
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@ -8,7 +8,7 @@ Mac. Atop these semaphores are implemented ProcessShared::Semaphore,
ProcessShared::Mutex. POSIX shared memory is used to implement
ProcessShared::SharedMemory.
On Linux, POSIX semaphores support +sem_timedwait()+ which can wait on
On Linux, POSIX semaphores support <tt>sem_timedwait()</tt> which can wait on
a semaphore but stop waiting after a timeout.
Mac OS X's implementation of POSIX semaphores does not support
@ -16,9 +16,9 @@ timeouts. But, the Mach layer in Mac OS X has its own semaphores that
do support timeouts. Thus, process_shared implements a moderate
subset of the Mach API, which is quite a bit different from POSIX.
Namely, semaphores created in one process are not available in child
processes created via +fork()+. Mach does provide the means to copy
processes created via <tt>fork()</tt>. Mach does provide the means to copy
capabilities between tasks (Mach equivalent to processes).
process_shared overrides Ruby's +fork+ methods so that semaphores are
process_shared overrides Ruby's <tt>fork</tt> methods so that semaphores are
copied from parent to child to emulate the POSIX behavior.
This is an incomplete work in progress.