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44b80414d3
New overload for method OSD::SetSignal() is added accepting argument specifying how to set or unset handlers. New enum OSD_SignalMode describes different modes of signal handlers setting used in extended version of OSD::SetSignal(). Method OSD::SignalMode() returns mode set by the last call to SetSignal(). Method OSD::IsFloatingSignalSet() is changed to return value based on actual floating point exception flags (rather than on variable set by previous call to SetSignal()). Added new method OSD::SetThreadLocalSignal() intended to setup thread-specific handlers (e.g. _set_se_translator() on Windows) and FPE settings. OSD_ThreadPool and Media_PlayerContext now use new method instead of OSD::SetSignal(), to avoid overriding global handlers. dsetsignal syntax has been extended to support choice of signal handling mode. DRAW command OCC30775 is added allowing to test signal handling in multithreaded process.