[runtime] add initial changes to support cygwin
pthread_mutex_timedwait is not supported on cygwin, so
an alternate implementation of UMLRTMutex is required.
This version has manifested two known problems to date:
1. Bug 469428: On Linux, deadlock appeared to occur, resulting in
two threads waiting on the UMLRTMutexGuard associated with the
RTS global lock mutex - one thread while giving the global lock,
one thread while taking the global lock.
2. Bug 469429: On Windows, (cygwin version) the rts-computer test
model crashes shortly after de-registering the ComputerStatus
service port.
Change-Id: I7399febb290f97aac3e8abfc3b1d627480d5e87b
Signed-off-by: Barry Maher <bmaher@gpinc.ca>
4 files changed
