Here are the data structures with brief descriptions:

_coarray_comm_t
_coarray_queue_t
_coarrayInfo_t	Structure for each coarray variable One or more coarrays can be linked from a single memory chunk and be malloc'ed and be free'd together
_memoryChunk_t	Structure for each malloc/free call Every memory chunk is linked both:
_memoryChunkOrder_t	MEMORY MANAGEMENT STRUCTURE-II (for dynamic ALLOCATE/DEALLOCATE stmts
_resourceSet_t	MEMORY MANAGEMENT STRUCTURE-I (for automatic deallocation) runtime resource corresponding to a procedure or to the entire program
_shift_queue_t
_sortedChunkTable_t	MEMORY MANAGEMENT STRUCTURE-III (for binary search for memory chunk) table of memory chunks sorted in order of local address
_XACC_gmv_comm_type
_XACC_sendrecv_comm_type
_XMP_array_info_type
_XMP_array_section
_XMP_array_type
_XMP_async_comm
_XMP_async_gmove
_XMP_async_reflect_type
_XMP_bsd_type
_XMP_coarray_list_type
_XMP_comm_set_type
_XMP_csd_type
_XMP_gmv_desc_type
_XMP_gpu_array_type
_XMP_gpu_data_type
_XMP_nodes_dish_type
_XMP_nodes_info_type
_XMP_nodes_inherit_info_type
_XMP_nodes_ref_type
_XMP_nodes_type
_XMP_postreq
_XMP_postreq_info
_XMP_reflect_sched_type
_XMP_rsd_type
_XMP_task_desc_type
_XMP_tca_coll_info_type
_XMP_template_chunk_type
_XMP_template_info_type
_XMP_template_type
packet_t
stride_t
tca_ring_buf_t
xmp_coarray
xmp_file_t
xmp_lock
xmp_range_t