Zygo Blaxell 0928362aab task: replace waiting state with run/exec counter ...

Task::run() would schedule a new execution of Task, unless it was waiting
on a queue for execution.  This cannot be implemented with a bool,
since a Task might be included in multiple queues, and should still be
in waiting state even when executed in that case.

Replace the bool with a counter.  run() and append() (but not
append_nolock) increment the counter, exec() decrements the counter.
If the counter is non-zero when run() or append() is called, the Task
is not scheduled.

Signed-off-by: Zygo Blaxell <bees@furryterror.org>

2021-06-11 20:49:15 -04:00

..

crucible

task: replace waiting state with run/exec counter

2021-06-11 20:49:15 -04:00