i#6831 sched refactor, step 7: Split eof_or_idle

Splits eof_or_idle() into separate overrides in the 3 scheduler
subclasses.  This then allows moving pop_from_ready_queue*() into the
dynamic subclass.

Moves process_markers(), ready_queue_empty(), and
syscall_incurs_switch() into the dynamic subclass.

Issue: #6831

clients/drcachesim/scheduler/scheduler_fixed.cpp

@@ -151,6 +151,18 @@ scheduler_fixed_tmpl_t<RecordType, ReaderType>::check_for_input_switch(
     return sched_type_t::STATUS_OK;
 }
 
+template <typename RecordType, typename ReaderType>
+typename scheduler_tmpl_t<RecordType, ReaderType>::stream_status_t
+scheduler_fixed_tmpl_t<RecordType, ReaderType>::eof_or_idle_for_mode(
+    output_ordinal_t output, input_ordinal_t prev_input)
+{
+    if (options_.mapping == sched_type_t::MAP_TO_CONSISTENT_OUTPUT ||
+        this->live_input_count_.load(std::memory_order_acquire) == 0) {
+        return sched_type_t::STATUS_EOF;
+    }
+    return sched_type_t::STATUS_IDLE;
+}
+
 template class scheduler_fixed_tmpl_t<memref_t, reader_t>;
 template class scheduler_fixed_tmpl_t<trace_entry_t,
                                       dynamorio::drmemtrace::record_reader_t>;