If a realtime policy is selected, set the '(18) priority' field to the
negated sched_priority minus one. If SCHED_IDLE is selected, set it to
the lowest priority 39. Also set '(19) nice' to the originally requested
nice value. Ensure consistence with the current Windows priority in all
cases. Move the sched_priority from/to Windows priority mapping from
sched_get/setparam() to new functions in miscfuncs.cc.
Signed-off-by: Christian Franke <christian.franke@t-online.de>
Add SCHED_BATCH to <sys/sched.h>. SCHED_BATCH is similar to SCHED_OTHER,
except that the nice value is mapped to a one step lower Windows priority.
Rework the mapping functions to ease the addition of this functionality.
Signed-off-by: Christian Franke <christian.franke@t-online.de>
If SCHED_OTHER is selected, set the Windows priority according to the
nice value. If SCHED_FIFO or SCHED_RR is selected, preserve the nice
value and set the Windows priority according to the sched_priority
parameter.
Signed-off-by: Christian Franke <christian.franke@t-online.de>
Windows silently sets a lower priority than requested if the new priority
requires administrator privileges. Revert to previous priority and fail
with EACCES or EPERM in this case.
Signed-off-by: Christian Franke <christian.franke@t-online.de>
Rename CygwinCreateThread to create_posix_thread and move
from miscfuncs.cc to create_posix_thread.cc, inbcluding all
related functions. Analogue for the prototypes.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
