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/* -----------------------------------------------------------------------------
*
* (c) The GHC Team, 1998-2005
*
* Exception support
*
* ---------------------------------------------------------------------------*/
#ifndef EXCEPTION_H
#define EXCEPTION_H
extern const StgRetInfoTable stg_blockAsyncExceptionszh_ret_info;
extern const StgRetInfoTable stg_unblockAsyncExceptionszh_ret_info;
/* Determine whether a thread is interruptible (ie. blocked
* indefinitely). Interruptible threads can be sent an exception with
* killThread# even if they have async exceptions blocked.
*/
STATIC_INLINE int
interruptible(StgTSO *t)
{
switch (t->why_blocked) {
case BlockedOnMVar:
case BlockedOnException:
case BlockedOnRead:
case BlockedOnWrite:
#if defined(mingw32_HOST_OS)
case BlockedOnDoProc:
#endif
case BlockedOnDelay:
return 1;
// NB. Threaded blocked on foreign calls (BlockedOnCCall) are
// *not* interruptible. We can't send these threads an exception.
default:
return 0;
}
}
#endif /* EXCEPTION_H */
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