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Mono Version 2.11.3 running on Windows7:
when using mono-sgen.exe the instantiation of a System.Threading.Timer results in an error "Windows systems haven't been ported to support mono_thread_state_init_from_handle".
When executing with mono.exe (with Boehm GC) this works fine.
mono-sgen of Version 2.11.2 was different: the instantiation and execution of Timers worked, but the same error was thrown after disposing the timer.
Using a System.Timers.Timer gives the same result (as it uses a System.Threading.Timer internally).
static void Main(string args)
using (System.Threading.Timer systemThreadingTimer = new System.Threading.Timer(SystemThreadingTimerCallback, null, 100, 100))
static void SystemThreadingTimerCallback(object timerData)
The windows port of sgen has not been completed. Keep using Boehm.