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task: tighten AUTO read-ahead wait-clear to match MDI (#3650) #3971

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task: tighten AUTO read-ahead wait-clear to match MDI (#3650) #3971

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11 changes: 9 additions & 2 deletions src/emc/task/emctaskmain.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -494,11 +494,18 @@ void readahead_reading(void)
int count = 0;
interpret_again:
if (emcTaskPlanIsWait()) {
// delay reading of next line until all is done
// delay reading of next line until all is done.
// Match the stricter check used by mdi_execute_hook:
// trusting only execState==DONE can race when motion
// hasn't yet processed a just-issued command (e.g. a
// G38 probe), letting the next read see a non-empty
// queue.
if (interp_list.len() == 0 &&
emcTaskCommand == 0 &&
emcStatus->task.execState ==
EMC_TASK_EXEC::DONE) {
EMC_TASK_EXEC::DONE &&
emcStatus->motion.traj.queue == 0 &&
emcStatus->io.status == RCS_STATUS::DONE) {
emcTaskPlanClearWait();
}
} else {
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