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Philippe Gerum authored
When interrupted by a signal, a wait operation on a gated monitor should not be restarted automatically from kernel space, but reported to the user instead. Rationale: the mutex guarding the monitor was dropped prior to waiting, and must be re-acquired explicitly by an UNWAIT request when the interrupted status is detected from user-space. Consequently, we cannot retry a WAIT request without transitioning to user-space first. Add the T_NORST local information bit to the thread control block, which is set by the monitor wait operation, and tested by the syscall trampoline code for disabling automatic restart. Signed-off-by:
Philippe Gerum <rpm@xenomai.org>
2f4ab84f