zeroshade commented on code in PR #36489:
URL: https://github.com/apache/arrow/pull/36489#discussion_r1254571451
##########
cpp/src/arrow/c/bridge.cc:
##########
@@ -663,6 +672,115 @@ Status ExportRecordBatch(const RecordBatch& batch, struct
ArrowArray* out,
return Status::OK();
}
+//////////////////////////////////////////////////////////////////////////
+// C device arrays
+
+Result<std::pair<DeviceType, int64_t>> validate_device_info(const ArrayData&
data) {
+ DeviceType device_type = DeviceType::UNKNOWN;
+ int64_t device_id = -1;
+
+ for (const auto& buf : data.buffers) {
+ if (!buf) {
+ // some buffers might be null
+ // for example, the null bitmap is optional if there's no nulls
+ continue;
+ }
+
+ if (device_type == DeviceType::UNKNOWN) {
+ device_type = buf->device_type();
+ device_id = buf->device()->device_id();
+ continue;
+ }
+
+ if (buf->device_type() != device_type) {
+ return Status::Invalid(
+ "exporting device array with buffers on more than one device.");
Review Comment:
gah, too much of my Go conditioning :stuck_out_tongue: lol Since you don't
typically capitalize error messages for Go. I'll fix it.
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